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99-430: The Monster line has had numerous variations over the years, from entry level 400 cc (24 cu in) bikes up to top-of-the-line 160 hp (120 kW) multivalve , water-cooled superbike-engined versions, with as many as nine different Monster versions in a single model year. The Monster's elemental simplicity has also made it a favorite platform for custom motorcycle builders, showcased at competitions like

198-405: A hot-bulb engine used a 'jerk pump' to dispense fuel oil at high pressure to an injector. Another development in early diesel engines was the pre-combustion chamber, which was invented in 1919 by Prosper l'Orange to avoid the drawbacks of air-blast injection systems. The pre-combustion chamber made it feasible to produce engines in size suitable for automobiles and MAN Truck & Bus presented

297-632: A spark plug . The Cummins Model H diesel truck engine was introduced in America in 1933. In 1936, the Mercedes-Benz OM 138 diesel engine (using a precombustion chamber) became one of the first fuel-injected engines used in a mass-production passenger car. During World War II , several petrol engines for aircraft used direct-injection systems, such as the European Junkers Jumo 210 , Daimler-Benz DB 601 , BMW 801 , and

396-451: A sports bike . He came up with a proposal and I thought, this was the bike Marlon Brando would be riding today in the film The Wild One !" Bordi's intent was to enter the cruiser market, with a bike that was made to be modified and would eventually have a wealth of bolt-on aftermarket accessories rivaling the range of custom and hot-rod parts available for Harley-Davidsons . Previously Cagiva had attempted to move into this market with

495-464: A 1 kg weight reduction. In April 2010, the Monster 796 was announced, producing a factory-claimed 87 hp (65 kW). In November 2010, Ducati announced the Monster 1100 Evo, replacing the Monster 1100 and 1100s. The exhaust was moved to the side as opposed to underneath the seat, and the dry clutch changed for a wet clutch. Also, there was a change in the paint schemes. Another major change

594-413: A 1.5-liter OHV straight-4 with four valves per cylinder as far back as 1914 but did not use this engine until after World War I . It produced appr. 30 bhp (22.4 kW) at 2700 rpm (15.4 kW/liter or 0.34 bhp/cid). In the 1920 Voiturettes Grand Prix at Le Mans driver Ernest Friderich finished first in a Bugatti Type 13 with the 16-valve engine, averaging 91.96 km/h. Even more successful

693-549: A 360.8 cid (5.8-liter) straight-4 (0.22 bhp per cubic inch). Over 2300 of these powerful early multi-valve engines were built. Stutz not only used them in their famous Bearcat sportscar but in their standard touring cars as well. The mono block White Motor Car engine developed 72 horsepower and less than 150 were built, only three are known to exist today. In 1919 Pierce-Arrow introduced its 524.8 cid (8.6-liter) straight-6 with 24 valves. The engine produced 48.6 bhp (0.09 bhp per cubic inch) and ran very quietly, which

792-536: A 6-speed gearbox. On December 2, 2020, four new models were announced, the all-new 2021 Ducati Monster, Ducati Monster Plus, Ducati Monster 1200 and Ducati Monster 1200s . The base Monster had with the 937 cc Testastretta 11° V-twin engine. The Ducati Monster 1200 and 1200 S is equipped with a 1198 cc Testastretta 11° V-twin engine. The 1200 S has an Öhlins suspension, 330 mm front brake discs with higher-spec Brembo calipers and light weight wheels. Multivalve A multi-valve or multivalve engine

891-454: A carburettor. Many of the carburettor's supporting components—such as the air filter, intake manifold, and fuel line routing—could be used with few or no changes. This postponed the redesign and tooling costs of these components. Single-point injection was used extensively on American-made passenger cars and light trucks during 1980–1995, and in some European cars in the early and mid-1990s. In the US,

990-581: A central injector instead of multiple injectors. Single-point injection (also called 'throttle-body injection') uses one injector in a throttle body mounted similarly to a carburettor on an intake manifold . As in a carburetted induction system, the fuel is mixed with the air before entering the intake manifold. Single-point injection was a relatively low-cost way for automakers to reduce exhaust emissions to comply with tightening regulations while providing better "driveability" (easy starting, smooth running, no engine stuttering) than could be obtained with

1089-490: A cruiser, the Ducati Indiana of 1986–1990. Some sources stated that it made poor use of Ducati's desmodromic valve V-twin engines ; and a full-cradle frame, not Ducati's signature trellis , playing against Ducati's stylistic strengths. Only 2,138 were made over four years. The Monster appealed to the same urban, style-conscious buyers who wanted a bike that could make an individualistic statement, but it did so with

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1188-862: A four valve per cylinder engine was the 1973 Triumph Dolomite Sprint . This Triumph used an in-house developed SOHC 16-valve 1,998 cc (122 ci) straight-4 engine that produced 127 bhp (47.6 kW/liter, 1.10 bhp/cid) at introduction. The 1975 Chevrolet Cosworth Vega featured a DOHC multi-valve head designed by Cosworth Engineering in the UK. This 122-cubic-inch straight-4 produced 110 bhp (82 kW; 112 PS) at 5600 rpm (0.90 bhp/cid; 41.0 kW/liter) and 107 lb⋅ft (145 N⋅m) at 4800 rpm. The 1976 Fiat 131 Abarth (51.6 kW/liter), 1976 Lotus Esprit with Lotus 907 engine (54.6 kW/liter, 1.20 bhp/cid), and 1978 BMW M1 with BMW M88 engine (58.7 kW/liter, 1.29 bhp/cid) all used four valves per cylinder. The BMW M88/3 engine

1287-467: A four-valve design. The three-valve design was common in the late 1980s and early 1990s; and from 2004 the main valve arrangement used in Ford F-Series trucks, and Ford SUVs. The Ducati ST3 V-twin had 3-valve heads. This is the most common type of multi-valve head, with two exhaust valves and two similar (or slightly larger) inlet valves. This design allows similar breathing as compared to

1386-433: A four-valve engine, a five-valve design should have a higher maximum RPM, and the three inlet ports should give efficient cylinder-filling and high gas turbulence (both desirable traits), it has been questioned whether a five-valve configuration gives a cost-effective benefit over four-valve designs. The rise of direct injection may also make five-valve heads more difficult to engineer, as the injector must take up some space on

1485-572: A fuel injection system are described in the following sections. In some systems, a single component performs multiple functions. Fuel injection is operated by spraying pressurised fuel into the engine. Therefore a device to pressurise the fuel is needed, such as a fuel pump. The system must determine the appropriate amount of fuel to be supplied and control the fuel flow to supply this amount. Several early mechanical injection systems used relatively sophisticated helix-controlled injection pump(s) that both metered fuel and created injection pressure. Since

1584-728: A fuel injection system in 1941 and by 1956 it was used in the Jaguar racing cars. At the 1957 24 Hours of Le Mans , the 1st to 4th placed cars were Jaguar D-Type entries using a Lucas fuel injection system. Also in 1957, General Motors introduced the Rochester Ramjet option, consisting of a fuel injection system for the V8 engine in the Chevrolet Corvette. During the 1960s, fuel injection systems were also produced by Hilborn , SPICA and Kugelfischer . Up until this time,

1683-469: A more track-oriented design. Ducati claimed the engine produced 97 lb⋅ft (132 N⋅m) torque, and 160 hp (120 kW), 15 hp (11 kW) more than the Monster 1200 S. It has the same Testastretta 11° DS, 90-degree V-twin used in the Multistrada and Diavel. It has an Öhlins suspension front and rear and a 1,509 mm (59.4 in) wheelbase compared to 1,511 mm (59.5 in) for

1782-412: A motorcycle that they had not quite seen before, and was still unmistakably Italian and a Ducati. Because Bordi wanted Galluzzi to keep costs low, the Monster was a humble "parts bin special," built not with newly designed components carefully engineered to work in unison, but by mixing and matching parts from existing Ducati models, beginning with the engine and of a 900 Supersport, a frame descended from

1881-632: A multi-valved Golf GTI 16V . The 16-valve 1.8-liter straight-4 produced 139 PS (102 kW; 137 bhp) or 56.7 kW/liter, almost 25% up from the 45.6 kW/liter for the previous 8-valve Golf GTI engine. The GM Quad 4 multi-valve engine family debuted early 1987. The Quad 4 was the first mainstream multi-valve engine to be produced by GM after the Chevrolet Cosworth Vega . The NA Quad 4 achieved 1.08 bhp (1 kW; 1 PS) per cubic inch (49.1 kW/liter). Such engines soon became common as Japanese manufacturers adopted

1980-580: A passenger car was released the following year, in the Mercedes-Benz 300SL sports car. However the engine suffered lubrication problems due to petrol diluting the engine oil, and subsequent Mercedes-Benz engines switched to a manifold injection design. Likewise, most petrol injection systems prior to the 2000s used the less-expensive manifold injection design. Throughout the 1950s, several manufacturers introduced their manifold injection systems for petrol engines. Lucas Industries had begun developing

2079-483: A pulsed flow system which used an air flow meter to calculate the amount of fuel required. L-Jetronic was widely adopted on European cars during the 1970s and 1980s. As a system that uses electronically-controlled fuel injectors which open and close to control the amount of fuel entering the engine, the L-Jetronic system uses the same basic principles as modern electronic fuel injection (EFI) systems. Prior to 1979,

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2178-528: A rallying legend in the 1970s winning many domestic and World Championship events. Other cars claiming to be first are the Jensen Healey , launched in 1972 which used a Lotus 907 belt-driven DOHC 16-valve 2-liter straight-4 producing 140 bhp (54.6 kW/liter, 1.20 bhp/cid). All of these, although mass-produced, are also of relatively limited production, so it is argued that the first widely available and popularly priced mass-production car with

2277-408: A slight increase in torque. For homologation Evolution I (1989) and Evolution II (1990) models were produced that had a redesigned engine to allow for a higher rev limit and improved top-end power capabilities. The Evo II engine offered 235 PS (173 kW; 232 hp) from 2463 cc (70.2 kW/liter). Saab introduced a 16-valve head to their 2.0-liter (1985 cc) straight-4 in 1984 and offered

2376-399: A sophisticated common-rail injection system. The latter is the most common system in modern automotive engines. During the 20th century, most petrol engines used either a carburettor or indirect fuel injection. Use of direct injection in petrol engines has become increasingly common in the 21st century. In a common rail system, fuel from the fuel tank is supplied to a common header (called

2475-610: A split-plane crankshaft rather than the Ferrari-type flat-plane. The engine was constructed by Ducati rather than Ferrari, and was produced from 1986 through 1991. The Quattrovalvole was also used by Lancia for their attempt at the World Sportscar Championship with the LC2 . The engine was twin-turbocharged and destroked to 2.65 litres, but produced 720 hp (537 kW) in qualifying trim. The engine

2574-480: A tachometer on all Monster models. 2002 saw the introduction of the limited, 300 edition, high-spec, S4, named after four time Ducati Superbike Champion, Carl 'Foggy' Fogarty. 2003 saw the S4R arrive with the 996 engine, and twin high rise mufflers on the right hand side with a single sided swingarm along with an increase in power (113HP) and torque over the 916-powered S4. Motorcycle Sport & Leisure commented that, at

2673-407: A three-valve head, and as the small exhaust valves allow high RPM, this design is very suitable for high power outputs. Less common is the five-valve head, with two exhaust valves and three inlet valves. All five valves are similar in size. This design allows excellent breathing, and, as every valve is small, high RPM and very high power outputs are theoretically available. Although, compared to

2772-469: A two-valve design, Toyota and Yamaha changed the 4A-GE to a four-valve after a year of evaluation. It produced 115-140 bhp (86-104 kW) at 6,600 rpm (54.2-65.5 kW/liter) and 109 lb⋅ft (148 N⋅m) at 5,800 rpm. To compensate for the reduced air speed of a multi-valve engine at low rpms, the first-to-second generation engines included the T-VIS intake system. In 1986 Volkswagen introduced

2871-464: Is also used to improve engine performance. The 1908 Ariès VT race cars had 1.4 litre supercharged single cylinder engines with four valve per cylinder desmodromic systems. (Source: [1] ) The 1910 Isotta-Fraschini Tipo KM had a 10.6 litre inline 4 with single overhead camshaft and four valves per cylinder and it had one of the first engines with fully enclosed overhead valve gear (source: Isotta Fraschini Tipo KM [1] and [2] ) The first motorcar in

2970-413: Is always intermittent (either sequential or cylinder-individual). This can be done either with a blast of air or hydraulically, with the latter method being more common in automotive engines. Typically, hydraulic direct injection systems spray fuel into the air inside the cylinder or combustion chamber. Direct injection can be achieved with a conventional helix-controlled injection pump, unit injectors, or

3069-546: Is called a manifold injection system. There exist two types of manifold injection systems: multi-point injection (or port injection) and single-point injection (or throttle body injection). Internal mixture formation systems can be separated into several different varieties of direct and indirect injection, the most common being the common-rail injection system, a variety of direct injection. The term "electronic fuel injection" refers to any fuel injection system controlled by an engine control unit . The fundamental functions of

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3168-533: Is injected at the same time to all the cylinders; or cylinder-individual , in which the engine control unit can adjust the injection for each cylinder individually. Multi-point injection (also called 'port injection') injects fuel into the intake ports just upstream of each cylinder's intake valve , rather than at a central point within an intake manifold. Typically, multi-point injected systems use multiple fuel injectors, but some systems, such as GM's central port injection system, use tubes with poppet valves fed by

3267-675: Is one where each cylinder has more than two valves (an intake , and an exhaust ). A multi-valve engine has better breathing, and with more smaller valves (having less mass in motion) may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power . A multi-valve engine design has three, four, or five valves per cylinder to achieve improved performance. In automotive engineering , any four-stroke internal combustion engine needs at least two valves per cylinder: one for intake of air (and often fuel ), and another for exhaust of combustion gases. Adding more valves increases valve area and improves

3366-532: Is the inclusion of Ducati Safety Package (DSP) which is standard with the motorcycle. This DSP consists of ABS and Ducati Traction Control. In October 2011, Ducati unveiled a new addition to the Monster family, the 795. Essentially a 696 frame with the larger 803cc engine from the 796, the 795 is aimed specifically at the Asian market and assembled in a plant in Thailand. In November 2013 at EICMA, Ducati introduced

3465-452: The 851 superbike , and the fork of a 750 Supersport. Galluzzi penned a "muscular" fuel tank and minimalist bodywork that produced a visual impression of mass and strength, on a motorcycle that turned out to be surprisingly tiny and agile to the first time rider. Motorcycle Consumer News design columnist Glynn Kerr described the Monster's statement as aggressive, "attributable to the head-down, charging bull stance." The trellis frame in

3564-533: The Mazda B8-ME ) use a single fork-shaped rocker arm to drive two valves (generally the exhaust valves) so that fewer cam lobes will be needed in order to reduce manufacturing costs. This has a single large exhaust valve and two smaller intake valves. A three-valve layout allows better breathing than a two-valve head, but the large exhaust valve results in an RPM limit no higher than a two-valve head. The manufacturing cost for this design can be lower than for

3663-415: The Mercedes-Benz OM 138 ) became available in the late 1930s and early 1940s, being the first fuel-injected engines for passenger car use. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburetors by the early 1990s. The primary difference between carburetion and fuel injection is that fuel injection atomizes

3762-848: The R-series engines, the Mazda B8-ME , and the Chrysler 3.5 L V6 engine . The V12 engines of many World War II fighter aircraft also used a SOHC configuration with four valves for each cylinder. The 1993 Mercedes-Benz C-Class (OM604 engine) was the first 4-valve diesel-engined car. Peugeot had a triple overhead cam five-valve Grand Prix car in 1921. In April 1988 an Audi 200 Turbo Quattro powered by an experimental 2.2-liter turbocharged 25-valve straight-5 rated at 478 kW/650 PS@6,200 rpm (217.3 kW/liter) set two world speed records at Nardo , Italy: 326.403 km/h (202.8 mph) for 1,000 km (625 miles) and 324.509 km/h (201.6 mph) for 500 miles. Mitsubishi were

3861-564: The Shvetsov ASh-82FN (M-82FN) . The German direct-injection systems were based on diesel injection systems used by Bosch, Deckel, Junkers and l'Orange. By around 1943, the Rolls-Royce Merlin and Wright R-3350 had switched from traditional carburettors to fuel-injection (called "pressure carburettors" at the time), however these engines used throttle body manifold injection , rather than the direct-injection systems of

3960-572: The Stutz Motor Company introduced a 322 cid (5.3-liter) dual camshaft 32-valve straight-8 with 156 bhp (116 kW) at 3900 rpm, called DV-32. The engine offered 0.48 bhp per cubic inch. About 100 of these multi-valve engines were built. Stutz also used them in their top-of-the-line sportscar, the DV-32 Super Bearcat that could reach 100 mph (160 km/h). The 1935 Duesenberg SJ Mormon Meteor's engine

4059-479: The Wankel engine . In a manifold injection system, air and fuel are mixed outside the combustion chamber so that a mixture of air and fuel is sucked into the engine. The main types of manifold injections systems are multi-point injection and single-point injection . These systems use either a continuous injection or an intermittent injection design. In a continuous injection system, fuel flows at all times from

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4158-669: The accumulator ), and then sent through tubing to the injectors, which inject it into the combustion chamber. The accumulator has a high-pressure relief valve to maintain pressure and return the excess fuel to the fuel tank. The fuel is sprayed with the help of a nozzle that is opened and closed with a solenoid-operated needle valve . Third-generation common rail diesels use piezoelectric injectors for increased precision, with fuel pressures up to 300  MPa or 44,000  psi . The types of common-rail systems include air-guided injection and spray-guided injection . Used by diesel engines, these systems include: This injection method

4257-437: The throttle body . Fuel injectors which also control the metering are called "injection valves", while injectors that perform all three functions are called unit injectors . Direct injection means that the fuel is injected into the main combustion chamber of each cylinder. The air and fuel are mixed only inside the combustion chamber. Therefore, only air is sucked into the engine during the intake stroke. The injection scheme

4356-513: The 190 E 2.3-16 produced 49 hp (36 kW) and 41 ft•lbf (55 N•m) of torque more than the basic single overhead cam 2.3 straight-4 engine on which it was based offering 185 hp (138 kW) at 6,200 rpm (59.2 kW/liter) and 174 lb⋅ft (236 N⋅m) at 4,500 rpm. In 1988 an enlarged 2.5-liter engine replaced the 2.3-liter. It offered double valve timing chains to fix the easily snapping single chains on early 2.3 engines, and increased peak output by 17 bhp (12.5 kW) with

4455-437: The 1917 Stutz straight-4, White Motor Car Model GL 327 CID Dual Valve Mononblock four, and 1919 Pierce-Arrow straight-6 engines. The standard flathead engines of that day were not very efficient and designers tried to improve engine performance by using multiple valves. The Stutz Motor Company used a modified T-head with 16 valves, twin-spark ignition and aluminium pistons to produce 80 bhp (59 kW) at 2400 rpm from

4554-510: The 1920s when these DOHC engines came to Alfa road cars like the Alfa Romeo 6C . In 1916 US automotive magazine Automobile Topics described a four-cylinder, four-valve-per-cylinder car engine made by Linthwaite-Hussey Motor Co. of Los Angeles, CA, USA: "Firm offers two models of high-speed motor with twin intakes and exhausts." . Early multi-valve engines in T-head configuration were

4653-438: The 1922 Type 29 Grand Prix racer and the legendary Type 35 of 1924. Both Type 29 and Type 35 had a 100 bhp (75 kW) 2-liter SOHC 24-valve NA straight-8 that produced 0.82 bhp (0.61 kW) per cubic inch. A.L.F.A. 40/60 GP was a fully working early racing car prototype made by the company now called Alfa Romeo . Only one example was built in 1914, which was later modified in 1921. This design of Giuseppe Merosi

4752-557: The 1950 Goliath GP700 small saloon, it was also added to the Gutbrod Superior engine in 1952. This mechanically-controlled system was essentially a specially lubricated high-pressure diesel direct-injection pump of the type that is governed by the vacuum behind an intake throttle valve. A Bosch mechanical direct-injection system was also used in the straight-eight used in the 1954 Mercedes-Benz W196 Formula One racing car. The first four-stroke direct-injection petrol engine for

4851-428: The 1954-1959 Mercedes-Benz 300 SL - all used manifold injection (i.e. the injectors located at the intake ports or throttle body, instead of inside the combustion chamber). This began to change when the first mass-produced petrol direct injection system for passenger cars was a common rail system introduced in the 1997 Mitsubishi 6G74 V6 engine. The first common-rail system for a passenger car diesel engine

4950-452: The 1980s, electronic systems have been used to control the metering of fuel. More recent systems use an electronic engine control unit which meters the fuel, controls the ignition timing and controls various other engine functions. The fuel injector is effectively a spray nozzle that performs the final stage in the delivery of fuel into the engine. The injector is located in the combustion chamber , inlet manifold or - less commonly -

5049-427: The 2014 Monster 1200 and 1200 S, with a watercooled four valve 135/145 hp 1198 Testastretta 11 engine. It replaced the Monster 1100 Evo. The 796 was replaced by the Monster 821 in mid 2014, equipped with the 821 cc Testastretta from the hyper line, and incorporating the same electronics suite as the monster 1200. In 2016 the new Monster 1200 R was added. Ducati said it was the most powerful Monster ever, with

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5148-592: The Ducati Monster is an integral part of the motorcycle's design allowing for both aesthetic appeal and for structural efficiency. Ducati introduced three Monster models in its first generation: the M600, M750, and M900 (the numbers denote engine sizes). The first M900 was shipped in 1993, the M600 shipped in 1994, and finally the M750 arrived in 1996. In 1998 Ducati introduces its Monster Dark range of motorcycles with

5247-589: The Electrojector system, becoming the first cars known to use an electronic fuel injection (EFI) system. The Electrojector patents were subsequently sold to Bosch, who developed the Electrojector into the Bosch D-Jetronic . The D-Jetronic was produced from 1967-1976 and first used on the VW 1600TL/E . The system was a speed/density system, using engine speed and intake manifold air density to calculate

5346-636: The Frankfurt Auto Show in September 1983 after it set a world record at Nardo, Italy, recording a combined average speed of 154.06 mph (247.94 km/h) over the 50,000 km (31,000 mi) endurance test. The engine was based on the 2.3-liter 8-valve 136 hp (101 kW) unit already fitted to the 190- and E-Class series. Cosworth developed the DOHC light alloy cast cylinder head with four large valves per cylinder. In roadgoing trim,

5445-500: The G10 engine in the 2000 Chevrolet Metro became the last engine available on an American-sold vehicle to use throttle body injection. In indirect-injected diesel engines (as well as Akroyd engines), there are two combustion chambers: the main combustion chamber, and a pre-chamber (also called an ante-chamber) that is connected to the main one. The fuel is injected only into the pre-chamber (where it begins to combust), and not directly into

5544-621: The German engines. From 1940, the Mitsubishi Kinsei 60 series engine used a direct-injection system, along with the related Mitsubishi Kasei engine from 1941. In 1943, a low-pressure fuel injection system was added to the Nakajima Homare Model 23 radial engine. The first mass-produced petrol direct-injection system was developed by Bosch and initially used in small automotive two-stroke petrol engines. Introduced in

5643-501: The M900 model. Perhaps more importantly, in 2001 Ducati introduced the S4, which added the liquid-cooled four-valve Superbike engine to the stable. Other technical changes that year included semi-floating front disc brakes with Brembo four-piston calipers, lighter Brembo wheels as well as 43 mm Showa inverted forks. That same year also included upgraded instrumentation with the addition of

5742-539: The Monster Challenge. Monsters eventually accounted for two-thirds or more of Ducati's output. British weekly newspaper Motorcycle News commented in December 2016: "The Monster has gone down in folklore as 'the bike that saved Ducati' due to its popularity and cheap development costs", adding that approximately 300,000 had been produced. The Monster began as a styling exercise in 1992. The concept for

5841-411: The Monster was one Galluzzi had been thinking about for some time, and it took time to convince the management at Cagiva and Ducati to build it. Ducati technical director Massimo Bordi originated the idea for what they wanted the new bike to accomplish, and assigned the design to Galluzzi. Bordi said he asked Galluzzi "for something which displayed a strong Ducati heritage but which was easy to ride and not

5940-462: The S model. The claimed wet weight is 207 kg (456 lb). The rear tire has a 200-section , somewhat greater than the 1200 S's 190 width. Ducati first showed the Monster 797 at the 2016 EICMA Motor Show in Milan, positioning it as the new entry level Monster. Sales in most markets began that year, expanding to India in 2017. It has a 803 cc, Desmodue, twin-cylinder, air-cooled engine. It has

6039-586: The added cost of a DOHC valve train . The Ford design uses one spark plug per cylinder located in the centre, but the Mercedes design uses two spark plugs per cylinder located on opposite sides, leaving the centre free to add a direct-to-cylinder fuel injector at a later date. The 1989 Citroën XM was the first 3-valve diesel-engined car. Examples of SOHC four-valve engines include the Honda F-series engines, D-series engines, all J-series engines,

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6138-589: The amount of fuel to be injected. In 1974, Bosch introduced the K-Jetronic system, which used a continuous flow of fuel from the injectors (rather than the pulsed flow of the D-Jetronic system). K-Jetronic was a mechanical injection system, using a plunger actuated by the intake manifold pressure which then controlled the fuel flow to the injectors. Also in 1974, Bosch introduced the L-Jetronic system,

6237-501: The danger of valve float . Some engines are designed to open each intake valve at a slightly different time, which increases turbulence, improving the mixing of air and fuel at low engine speeds. More valves also provide additional cooling to the cylinder head. The disadvantages of multi-valve engines are an increase in manufacturing cost and a potential increase in oil consumption due to the greater number of valve stem seals. Some single overhead camshaft (SOHC) multi-valve engines (such as

6336-579: The diesel engine, but also improved it. He increased the air blast pressure from 4–5 kp/cm (390–490 kPa) to 65 kp/cm (6,400 kPa). In the meantime, the first manifold injection system was designed by Johannes Spiel in 1884, while working at Hallesche Maschinenfabrik in Germany. In 1891, the British Herbert-Akroyd oil engine became the first engine to use a pressurised fuel injection system. This design, called

6435-411: The electronics in fuel injection systems used analogue electronics for the control system. The Bosch Motronic multi-point fuel injection system (also amongst the first systems where the ignition system is controlled by the same device as the fuel injection system) was the first mass-produced system to use digital electronics . The Ford EEC-III single-point fuel injection system, introduced in 1980,

6534-552: The engine with and without turbocharger (65.5 kW/liter and 47.9 kW/liter respectively) in the Saab 900 and Saab 9000 . The 2.0-liter Nissan FJ20 was one of the earliest straight-4 mass-produced Japanese engines to have both a DOHC 16-valve configuration (four valves per cylinder, two intake, two exhaust) and electronic fuel injection (EFI) when released in October 1981 in the sixth generation Nissan Skyline . Peak output

6633-669: The first appears to have been the 1969 Nissan Skyline , using the Nissan S20 six cylinder DOHC four-valve engine. This engine was also fitted to Nissan Fairlady Z432 racing edition. For a four-cylinder engine, the first mass-produced car using a four valves per cylinder engine was the British Ford Escort RS1600 , this car used the Cosworth BDA engine which was a Ford 'Kent' block with a Cosworth 16 valve twin cam cylinder head. The car went on to become

6732-441: The first direct-injected diesel engine for trucks in 1924. Higher pressure diesel injection pumps were introduced by Bosch in 1927. In 1898, German company Deutz AG started producing four-stroke petrol stationary engines with manifold injection. The 1906 Antoinette 8V aircraft engine (the world's first V8 engine) was another early four-stroke engine that used manifold injection. The first petrol engine with direct-injection

6831-680: The first to market a car engine with five valves per cylinder, with the 548 cc 3G81 engine in their Minica Dangan ZZ kei car in 1989. Fuel injection Fuel injection is the introduction of fuel in an internal combustion engine , most commonly automotive engines , by the means of a fuel injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines ), and many spark-ignition engines (i.e. petrol (gasoline) engines , such as Otto or Wankel ), use fuel injection of one kind or another. Mass-produced diesel engines for passenger cars (such as

6930-415: The flow of intake and exhaust gases, thereby enhancing combustion , volumetric efficiency , and power output . Multi-valve geometry allows the spark plug to be ideally located within the combustion chamber for optimal flame propagation. Multi-valve engines tend to have smaller valves that have lower reciprocating mass , which can reduce wear on each cam lobe, and allow more power from higher RPM without

7029-624: The four-valve S4R, but with the simpler two-valve 800 cc and 1,000 cc motors in the S2R 800 and S2R 1000, respectively. February 2006 marked the announcement of the 2007 Monster 695. It replaced the Monster 620 and was introduced June 2006. The Monster 696 was announced in November 2007, and officially launched early April 2008 in Barcelona . Its 696 V-twin has the highest power output per cc of any Ducati air-cooled engine. The Monster 1100

7128-600: The fuel injection systems had used a mechanical control system. In 1957, the American Bendix Electrojector system was introduced, which used analogue electronics for the control system. The Electrojector was intended to be available for the Rambler Rebel mid-size car, however reliability problems meant that the fuel injection option was not offered. In 1958, the Chrysler 300D , DeSoto Adventurer , Dodge D-500 and Plymouth Fury offered

7227-580: The fuel injectors, but at a variable flow rate. The most common automotive continuous injection system is the Bosch K-Jetronic system, introduced in 1974 and used until the mid-1990s by various car manufacturers. Intermittent injection systems can be sequential , in which injection is timed to coincide with each cylinder's intake stroke; batched , in which fuel is injected to the cylinders in groups, without precise synchronization to any particular cylinder's intake stroke; simultaneous , in which fuel

7326-633: The fuel through a small nozzle under high pressure, while carburetion relies on suction created by intake air accelerated through a Venturi tube to draw fuel into the airstream. The term "fuel injection" is vague and comprises various distinct systems with fundamentally different functional principles. Typically, the only thing all fuel injection systems have in common is a lack of carburetion . There are two main functional principles of mixture formation systems for internal combustion engines: internal mixture formation and external mixture formation. A fuel injection system that uses external mixture formation

7425-493: The head. After making five-valve Genesis engines for several years, Yamaha has since reverted to the cheaper four-valve design. Examples of the five-valve engines are the various 1.8 L 20vT engines manufactured by AUDI AG, the later versions of the Ferrari Dino V8 , and the 1.6 L 20-valve 4A-GE engine made by Toyota in collaboration with Yamaha. For a cylindrical bore and equal-area sized valves, increasing

7524-503: The main combustion chamber. Therefore, this principle is called indirect injection. There exist several slightly different indirect injection systems that have similar characteristics. Types of indirect injection used by diesel engines include: In 1872, George Bailey Brayton obtained a patent on an internal combustion engine that used a pneumatic fuel injection system, also invented by Brayton: air-blast injection . In 1894, Rudolf Diesel copied Brayton's air-blast injection system for

7623-513: The multi-valve concept. The 1975 Honda Civic introduced Honda's 1.5-liter SOHC 12-valve straight-4 engines. Nissan's 1988–1992 SOHC KA24E engine had three valves per cylinder (two intakes, one exhaust) as well. Nissan upgraded to DOHC after 1992 for some of their sports cars, including the 240SX . In 1988, Renault released a 12 valve version of its Douvrin 4 cylinder 2.0l SOHC. Mercedes and Ford produced three-valve V6 and V8 engines, Ford claiming an 80% improvement in high RPM breathing without

7722-913: The number of valves beyond five decreases the total valve area. The following table shows the effective areas of differing valve quantities as proportion of cylinder bore. These percentages are based on simple geometry and do not take into account orifices for spark plugs or injectors, but these voids will usually be sited in the "dead space" unavailable for valves. Also, in practice, intake valves are often larger than exhaust valves in heads with an even number of valves-per-cylinder: Turbocharging and supercharging are technologies that also improve engine breathing, and can be used instead of, or in conjunction with, multi-valve engines. The same applies to variable valve timing and variable-length intake manifolds . Rotary valves also offer improved engine breathing and high rev performance but these were never very successful. Cylinder head porting , as part of engine tuning ,

7821-592: The original 300 PS (221 kW; 296 hp) 3.0-liter version the Toyota 7 engine participated in endurance races as a 5.0-liter (4,968 cc) non-turbo V8 with DOHC and 32-valves. It produced 600 PS (441 kW; 592 hp) at 8,000 rpm (88.8 kW/liter) and 55.0 kg⋅m (539 N⋅m; 398 lb⋅ft) at 6,400 rpm. There is much discussion about which was the first 'mass-produced' car to use an engine with four valves per cylinder. For six cylinder engines, and considering special versions of mass-produced cars,

7920-574: The release of the M600 Dark. In 1999, to close out existing stock of Monster parts, Ducati released several limited edition Monsters many with different levels of accessories, the most notable was the Monster City, which came in a unique blue color and had leather briefcase style saddlebags and higher handlebars. From 1994, a smaller displacement model, the M400, was built for specific markets where

8019-402: The spark plugs. Only two cars were built. Ferrari developed their Quattrovalvole (or QV) engines in the 80s. Four valves per cylinder were added for the 1982 308 and Mondial Quattrovalvole , bringing power back up to the pre- FI high of 245 hp (183 kW) . A very unusual Dino Quattrovalvole was used in the 1986 Lancia Thema 8.32 . It was based on the 308 QV's engine, but used

8118-532: The tax or license system is particularly harsh on larger capacity or more powerful motorcycles. The M400 was mainly intended for Italy, Japan, and Singapore but was also exported to regions such as Indonesia, the Philippines, Taiwan, and Thailand. The M400 was based on the M600 with the same basic engine components, but a shorter stroke crankshaft and smaller diameter pistons. The bike remained relatively unchanged until 2000, when Ducati added fuel injection to

8217-616: The time of introduction, it was "...the most powerful naked bike ever produced by the Italian firm...". In November 2005, a new top of the range model was announced: the S4RS Testastretta. This new model uses the engine from the 999 Superbike with Öhlins suspension front and rear and radial front brakes. Also in 2005, Ducati added the S2R Desmodue (two-valved Desmodromic engine) line to the Monster family: styled akin to

8316-516: The world speed record of 170 km/h. Robert Peugeot also commissioned the young Ettore Bugatti to develop a GP racing car for the 1912 Grand Prix. This chain-driven Bugatti Type 18 had a 5-litre straight-4 with SOHC and three valves per cylinder (two inlet, one exhaust). It produced appr. 100 bhp (75 kW; 101 PS) at 2800 rpm (0.30 bhp per cubic inch) and could reach 99 mph (159 km/h). The three-valve head would later be used for some of Bugatti's most famous cars, including

8415-551: The world to have an engine with two overhead camshafts and four valves per cylinder was the 1912 Peugeot L76 Grand Prix race car designed by Ernest Henry . Its 7.6-litre monobloc straight-4 with modern hemispherical combustion chambers produced 148 bhp (110 kW) (19.5 HP/Liter(0.32 bhp per cubic inch)). In April 1913, on the Brooklands racetrack in England, a specially built L76 called "la Torpille" (torpedo) beat

8514-464: Was 148 hp (110 kW) at 6,000 rpm and 133 lb⋅ft (180 N⋅m) at 4,800 rpm. The FJ20 was also offered with a turbocharger, producing 188 hp (140 kW) at 6,400 rpm and 166 lb⋅ft (225 N⋅m) at 4,800 rpm. Following Nissan's lead, Toyota released the 1.6-liter (1,587 cc) 4A-GE engine in 1983. The cylinder head was developed by Yamaha Motor Corporation and was built at Toyota's Shimayama plant. While originally conceived of as

8613-605: Was Bugattis clean sweep of the first four places at Brescia in 1921. In honour of this memorable victory all 16-valve-engined Bugattis were dubbed Brescia . From 1920 through 1926 about 2000 were built. Peugeot had a triple overhead cam 5-valve Grand Prix car in 1921. Bentley used multi-valve engines from the beginning. The Bentley 3 Litre , introduced in 1921, used a monobloc straight-4 with aluminium pistons, pent-roof combustion chambers , twin spark ignition, SOHC, and four valves per cylinder. It produced appr. 70 bhp (0.38 bhp per cubic inch). The 1927 Bentley 4½ Litre

8712-468: Was a 419.6 cid (6.9-liter) straight-8 with DOHC, 4 valves per cylinder and a supercharger. It achieved 400 bhp (298.3 kW) at 5,000 rpm and 0.95 bhp per cubic inch. The 1937 Mercedes-Benz W125 racing car used a supercharged 5.7-liter straight-8 with DOHC and four valves per cylinder. The engine produced 592-646 bhp (441.5-475 kW) at 5800 rpm and achieved 1.71-1.87 bhp per cubic inch (77.8-85.1 kW/liter). The W125 top speed

8811-424: Was a two-stroke aircraft engine designed by Otto Mader in 1916. Another early spark-ignition engine to use direct-injection was the 1925 Hesselman engine , designed by Swedish engineer Jonas Hesselman. This engine could run on a variety of fuels (such as oil, kerosene, petrol or diesel oil) and used a stratified charge principle whereby fuel is injected towards the end of the compression stroke, then ignited with

8910-531: Was an asset to the bootleggers of that era. Multi-valve engines continued to be popular in racing and sports engines. Robert M. Roof, the chief engineer for Laurel Motors, designed his multi-valve Roof Racing Overheads early in the 20th century. Type A 16-valve heads were successful in the teens, Type B was offered in 1918 and Type C 16-valve in 1923. Frank Lockhart drove a Type C overhead cam car to victory in Indiana in 1926. Bugatti also had developed

9009-454: Was announced in September 2008. Based on the Monster 696, it comes with a larger 1078 cc engine, a single sided swingarm , radial brake calipers, larger forks and taller suspension. In 2009, Ducati sold over 12,000 696 models, the first of their motorcycles to sell over 10,000 bikes in one year. The 1100 S model has fully adjustable Öhlins suspension components, a different colour scheme and aluminium brake disc carriers, which account for

9108-407: Was another early digital fuel injection system. These and other electronic manifold injection systems (using either port injection or throttle-body injection ) became more widespread through the 1980s, and by the early 1990s they had replaced carburettors in most new petrol-engined cars sold in developed countries. The aforementioned injection systems for petrol passenger car engines - except for

9207-484: Was appr. 200 mph (322 km/h). The 1967 Cosworth DFV F1 engine, a NA 3.0-liter V8 producing appr. 400 bhp (298 kW; 406 PS) at 9,000 rpm (101.9 kW/liter), featured four valves per cylinder. For many years it was the dominant engine in Formula One, and it was also used in other categories, including CART , Formula 3000 and Sportscar racing . Debuting at the 1968 Japanese Grand Prix in

9306-497: Was later increased to 3.0 litres and increased power output to 828 hp (617 kW). The 1984 Ferrari Testarossa had a 4.9-liter flat-12 with four valves per cylinder. Almost 7,200 Testarossa were produced between 1984 and 1991. In 1985 Lamborghini released a Countach Quattrovalvole , producing 455 PS (335 kW; 449 hp) from a 5.2-liter (5167 cc) Lamborghini V12 engine (64.8 kW/liter). The Mercedes-Benz 190E 2.3-16 with 16-valve engine debuted at

9405-492: Was of similar engine design. The NA racing model offered 130 bhp (0.48 bhp per cubic inch) and the 1929 supercharged 4½ Litre (Blower Bentley) reached 240 bhp (0.89 bhp per cubic inch). The 1926 Bentley 6½ Litre added two cylinders to the monobloc straight-4. This multi-valve straight-6 offered 180-200 bhp (0.45-0.50 bhp per cubic inch). The 1930 Bentley 8 Litre multi-valve straight-6 produced appr. 220 bhp (0.45 bhp per cubic inch). In 1931

9504-453: Was previously used in many diesel engines. Types of systems include: The M-System , used in some diesel engines from the 1960s to the 1980s, sprayed the fuel onto the walls of the combustion chamber, as opposed to most other direct-injection systems which spray the fuel into the middle of the chamber. Manifold injection systems are common in petrol-fuelled engines such as the Otto engine and

9603-473: Was the Fiat Multijet straight-four engine, introduced in the 1999 Alfa Romeo 156 1.9 JTD model. Since the 2010s, many petrol engines have switched to direct-injection (sometimes in combination with separate manifold injectors for each cylinder). Similarly, many modern diesel engines use a common-rail design. Stratified charge injection was used in several petrol engines in the early 2000s, such as

9702-401: Was the first Alfa Romeo DOHC engine. It had four valves per cylinder, 90-degree valve angle and twin-spark ignition. The GP engine had a displacement of 4.5-liter (4490 cc) and produced 88 bhp (66 kW) at 2950 rpm (14.7 kW/liter), and after modifications in 1921 102 bhp (76 kW) at 3000 rpm. The top speed of this car was 88-93 mph (140–149 km/h). It wasn't until

9801-405: Was used in the 1983 BMW M6 35CSi and in the 1985 BMW M5 . The 1978 Porsche 935/78 racer used a twin turbo 3.2-liter flat-6 (845 bhp/630 kW@8,200 rpm; 784 Nm/578 ft.lbs@6,600 rpm). The water-cooled engine featured four valves per cylinder and output a massive 196.2 kW/liter. Porsche had to abandon its traditional aircooling because the multi-valve DOHC hampered aircooling of

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