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85-673: The Gillig Low Floor (originally named Gillig H2000LF and also nicknamed Gillig Advantage ) is a transit bus manufactured by Gillig since 1997. The second low-floor bus design introduced in the United States (after the New Flyer Low Floor ), the Low Floor originally served as a second product range for the company alongside the Gillig Phantom . As transit bus operators shifted toward low-floor designs,

170-547: A SAE J1772 CCS Type 1 connector, and an overhead pantograph ( SAE J3105 –1) connection is available. As tested by the Bus Research and Testing Center in Altoona , a 40-foot (12.2 m) battery-electric bus, with a gross capacity of 444 kW-hr (355 kW-hr usable) at 750 VDC, achieved a range of 129 to 187 mi (208 to 301 km), depending on the driving cycle (Manhattan and EPA HD-UDDS, respectively;

255-465: A diesel–electric locomotive with the addition of a battery that may power the vehicle without running the ICE and acting as an energy buffer that is used to accelerate and achieve greater speed; the generator may simultaneously charge the battery and power the electric motor that moves the vehicle. When the vehicle is stopped the ICE is switched off without idling, while the battery provides whatever power

340-458: A 27% improvement in combined fuel efficiency in EPA testing of the 2009 Saturn VUE. The system can also be found on the 2008–2009 Saturn Aura Green Line and the 2008–2010 Chevrolet Malibu hybrids. Another way to offer start/stop is by employing a static start engine. Such an engine requires no starter motor, but employs sensors to determine the exact position of each piston, then precisely timing

425-615: A Low Floor Plus was introduced, combining the roof fairing of the BRT Plus with the body of the standard Low Floor. A battery-electric powertrain developed by Cummins was made available for the Low Floor Plus variant starting in 2019. The launch client for the Gillig/Cummins battery-electric bus was Big Blue Bus , serving Santa Monica, California . A battery-electric Low Floor (29-foot) was tested at Altoona in 2018, using

510-434: A brake locking mechanism on the bus to prevent it from moving while someone could possibly be entering or exiting the bus, when the door is closed, the lock will release, this is mostly implemented on rear doors, not really on front doors, since the driver will be paying attention to the front door. Transit buses can be single-decker , double-decker , rigid or articulated . Selection of type has traditionally been made on

595-509: A combustion-only vehicle. A combustion-electric hybrid has batteries that are light that offer higher energy density and are far more costly. ICEs require only a battery large enough to operate the electrical system and ignite the engine. Electrical vehicles have a long history combining internal combustion and electrical transmission – as in a diesel–electric power-train – although they have mostly been used for rail locomotives . A diesel–electric powertrain fails

680-429: A compound-split design, since the addition of four clutches within the transmission allows for multiple configurations of engine power-splitting. In addition to the clutches, this transmission has a second planetary gearset. The objective of the design is to vary the percentage of mechanically vs. electrically transmitted power to cope both with low-speed and high-speed operating conditions. This enables smaller motors to do

765-512: A constant/narrow band offsets many of the perceived disadvantages of the Wankel engine in automotive applications. ) The electric propeller motor uses electricity stored in batteries, with the engines not operating, to take off and climb reducing sound emissions. The powertrain reduces the weight of the plane by 100 kilos relative to its predecessor. The DA36 E-Star first flew in June 2013, making this

850-534: A drivetrain adapted from the BAE HybriDrive powertrain. Of the two body configurations for low-floor buses, the Gillig Low Floor is a low-entry bus (the front two-thirds to three-fourths of the interior is low-floor) with a low-step entry (nearly curb height) and integrated manual wheelchair ramp while the rear part of the interior (behind the rear axle) is raised to provide sufficient space for

935-538: A front roof fairing; the Trolley Replica (not a trolleybus) restyled the standard Low Floor body as a vintage trolley. In 2008, the entry doors were revised, adopting larger glass panels (distinguished by squared-off corners). A suburban configuration was introduced alongside the standard transit Low Floor (replacing the version previously offered on the Gillig Phantom). Distinguished by its lack of

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1020-498: A limited-stopping or non-stop service at peak times, but over the same distance as the regular route. Fare payment is done via: and is done upon: Depending on payment systems in different municipalities, there are widely different rules with regard to which door, front or rear, one must use when boarding/exiting. For rear doors, most buses have doors opened by the driver controls or patron (with touch-to-open, motion sensor or push bars). Most doors on buses use air-assist technology,

1105-414: A parallel hybrid architecture. An alternative parallel hybrid is the "through the road" type. In this system a conventional drivetrain powers one axle, with an electric motor or motors driving another. This arrangement was used by the earliest 'off track' trolleybuses. It in effect provides a complete backup power train. In modern motors batteries can be recharged through regenerative braking or by loading

1190-561: A parallel hybrid with start-stop and modest levels of engine-assist or regenerative braking. Mild hybrids generally cannot provide all-electric propulsion. Mild hybrids like the General Motors 2004–2007 Parallel Hybrid Truck (PHT) and the Honda Eco-Assist hybrids are equipped with a three-phase electric motor mounted within the bell-housing between the engine and transmission, allowing the engine to be turned off whenever

1275-427: A power-split hybrid, a smaller, less flexible, and more efficient engine can be used. The conventional Otto cycle (higher power density, more low-RPM torque, lower fuel efficiency ) is often modified to an Atkinson cycle or Miller cycle (lower power density, less low-rpm torque, higher fuel efficiency; sometimes called an Atkinson-Miller cycle). The smaller engine, using a more efficient cycle and often operating in

1360-526: A rear entry door, the suburban Low Floor was configured with forward-facing seating, internal luggage racks, onboard Wi-Fi, and other passenger-related options. For 2011, the Low Floor BRT Plus was introduced. Coinciding with the introduction of CNG and diesel-electric hybrid powertrains, the Plus adopted a full-length body fairing to accommodate CNG tanks and hybrid equipment on the roof. In 2017,

1445-488: A regional as well as operational basis; however, with the advent of global manufacturing, all of these types can be seen in the same location or country. Depending on local policies, transit buses will also usually have two, three or (for articulated) four doors to facilitate rapid boarding and alighting. In cases of low-demand routes, or to navigate small local streets, some models of minibus and small midibuses have also been used as transit type buses. The development of

1530-775: A system named "Two-Mode Hybrid" as part of the Global Hybrid Cooperation . The technology was released in the fall of 2007 on the Chevrolet Tahoe Hybrid . The system was also featured on the GMC Graphite SUV concept vehicle at the 2005 North American International Auto Show in Detroit . BYD Auto 's F3DM sedan is a series-parallel plug-in hybrid automobile, which went on sale in China in 2008. The Two-Mode Hybrid name highlights

1615-575: A third-party specification put to the manufacturer by the authority. Early examples of such specification include the Greater Manchester Leyland Atlantean , and DMS-class London Daimler Fleetline . New transit buses may be purchased each time a route/area is contracted, such as in the London Buses tendering system. The operating area of a transit bus may also be defined as a geographic metropolitan area, with

1700-403: A transit bus from those used in intercity travel, and called motorcoaches. "A bus is a motor vehicle designed, constructed and/or used to transport passengers. A motorcoach is a bus designed with an elevated passenger deck located over a baggage compartment. A minibus is designed to transport 16 or more passengers (including the driver) and is typically built on a small truck chassis." Generally,

1785-655: A transit bus will be 35 to 40 feet (11 to 12 m) long, with seats and standing room. Usually there are 30 to 45 seats, depending on length and interior configuration. If more passenger capacity is needed on a route, an articulated bus, 54 to 60 feet (16 to 18 m) long, or a double articulated bus, can hold more seats; the connecting portion(s) can bend to aid making turns. Features of transit buses include: Modern transit buses are also increasingly being equipped with passenger information systems , multimedia, WiFi , USB charging points, entertainment/advertising, and passenger comforts such as heating and air-conditioning (in

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1870-409: A vehicle giving superior weight distribution and maximizing vehicle cabin space and opening up the possibility of superior vehicle designs exploiting this flexibility. Power-split hybrid or series-parallel hybrid are parallel hybrids that incorporate power-split devices, allowing for power paths from the ICE to the wheels that can be either mechanical or electrical. The main principle is to decouple

1955-475: A wheel directly eliminates the conventional mechanical transmission elements: gearbox, transmission shafts and differential, and can sometimes eliminate flexible couplings . In 1997, Toyota released the first series-hybrid bus sold in Japan. Designline International of Ashburton, New Zealand produces city buses with a microturbine powered series-hybrid system. Wrightbus produces series hybrid buses including

2040-407: A wide speed range. ICEs are most efficient when turning at a constant speed. ICEs can run optimally when turning a generator. Series-hybrid systems offer smoother acceleration by avoiding gear changes. Series-hybrids incorporate: In addition: The electric motor may be entirely fed by electricity from the battery or via the generator turned by the ICE, or both. Such a vehicle conceptually resembles

2125-435: Is a transversal categorization. Micro hybrid is a general term given to vehicles that use some type of start-stop system to automatically shut off the engine when idling . Strictly speaking, micro hybrids are not real hybrid vehicles, because they do not rely on two different sources of power. Mild hybrids are essentially conventional vehicles with some hybrid hardware, but with limited hybrid features. Typically, they are

2210-621: Is available in 30, 35 and 40-foot (9.1, 10.7 and 12.2-meter) lengths. The vintage-style trolley appearance package exterior features include frameless bonded side windows, maintenance-free wood-like trim, ornate gold pinstriping, custom window and body graphic decals, roof cupola, functional solid brass bell, cow catcher, roof perimeter LED ropelights, and front center brass trolley lamp. The interior has solid American white oak seats, optional seat cushions, leather hand straps, brass handrails, stop request pull ropes, wood trim, and woodgrain wall panels and floor covering. In addition to conventional diesel,

2295-564: Is commercially available as of 2017. One variety operated in parallel to provide power from both motors simultaneously. Another operated in series with one source exclusively providing the power and the second providing electricity. Either source may provide the primary motive force, with the other augmenting the primary. Other combinations offer efficiency gains from superior energy management and regeneration that are offset by cost, complexity and battery limitations. Combustion-electric (CE) hybrids have battery packs with far larger capacity than

2380-429: Is eliminated. The aim is to reduce fuel consumption and emissions by up to 25 percent. An onboard 40 hp (30 kW) Austro Engine Wankel rotary engine and generator provides the electricity. The Wankel was chosen because of its small size, low weight and great power to weight ratio. (Wankel engines also run efficiently at a constant speed of approximately 2,000 RPM which is suited to generator operation. Keeping to

2465-423: Is needed at rest. Vehicles at traffic lights, or in slow moving stop-start traffic need not burn fuel when stationary or moving slowly, reducing emissions. Series-hybrids can be fitted with a supercapacitor or a flywheel to store regenerative braking energy, which can improve efficiency by recovering energy otherwise lost as heat through the braking system. Because a series-hybrid has no mechanical link between

2550-525: Is the Fisker Karma . The Chevrolet Volt is almost a series hybrid, but also includes a mechanical link from the engine to the wheels above 70 mph. Series-hybrids have been taken up by the aircraft industry. The DA36 E-Star, an aircraft designed by Siemens , Diamond Aircraft and EADS , employs a series hybrid powertrain with the propeller turned by a Siemens 70 kW (94 hp) electric motor. A power sapping propeller speed reduction unit

2635-406: Is the steam locomotive. Modern examples include electric bicycles and hybrid electric vehicles , which generally combine a battery (or supercapacitor ) supplemented by an internal combustion engine (ICE) that can either recharge the batteries or power the vehicle. Other hybrid powertrains can use flywheels to store energy. Among different types of hybrid vehicles, only the electric/ICE type

Gillig Low Floor - Misplaced Pages Continue

2720-490: The California Air Resources Board . Electric transmissions were invented by 1903. Mechanical transmissions involve costs via their weight, bulk, noise, cost, complexity and drain on engine power with every gear-change, affecting both manual and automatic systems. Unlike ICEs, electric motors typically do not require a transmission. Compared to parallel hybrids, the mechanical transmission between

2805-518: The Gemini 2 and New Routemaster . Supercapacitors combined with a lithium ion battery bank have been used by AFS Trinity in a converted Saturn Vue SUV vehicle. Using supercapacitors they claim up to 150 mpg in a series-hybrid arrangement. Well known automotive series hybrid models include the variant of the BMW i3 that is equipped with a range extender. Another example of a series hybrid automobile

2890-646: The Greater Dayton Regional Transit Authority (RTA); Gillig was responsible for the chassis, based on the Low Floor BRT/CNG, and Kiepe supplied the traction motor, battery, and trolley pole equipment. The contract was awarded by RTA in 2013 and the resulting buses featured "in-motion charging", using the trolley wires to charge an on-board battery that provided an off-wire range of up to 20 mi (32 km). This meant that buses could detour around stalled traffic and

2975-554: The Volvo V60 plug-in hybrid , the BMW 2 Series Active Tourer , BMW i8 and the second generation Honda NSX . Series hybrids are also referred to as extended-range electric vehicles (EREV) or range-extended electric vehicles (REEV), or electric vehicle with extended range (EVER). All series hybrids are EREV, REEV or EVER, but not all EREV, REEV or EVER are series hybrids. Series hybrids with particular characteristics are classified as range-extended battery-electric vehicle (BEVx) by

3060-481: The Wright StreetCar , often as part of bus rapid transit schemes. Fare collection is also seeing a shift to off-bus payment, with either the driver or an inspector verifying fare payments. A commuter or express bus service is a fixed-route bus characterized by service predominantly in one direction during peak periods, limited stops, use of multi-ride tickets and routes of extended length, usually between

3145-675: The midibus has also given many operators a low-cost way of operating a transit bus service, with some midibuses such as the Plaxton SPD Super Pointer Dart resembling full size transit type vehicles. Due to their public transport role, transit buses were the first type of bus to benefit from low-floor technology, in response to a demand for equal access public service provision. Transit buses are also now subject to various disability discrimination acts in several jurisdictions which dictate various design features also applied to other vehicles in some cases. Due to

3230-486: The unsprung mass of the wheel assembly; vehicle designs may be optimized to lower the centre of gravity by locating heavier elements (including battery) at floor level; In a typical road vehicle the power-transmission setup may be smaller and lighter than the equivalent conventional mechanical power-transmission setup, liberating space; the combustion generator set only requires cables to the driving electric motors, increasing flexibility in major component layout spread across

3315-921: The Allison hybrid drivetrain was 81% more expensive than a conventional bus, which was partially subsidized by federal grants and expected savings in fuel and maintenance costs. The Gillig/Voith hybrid, branded DIWAhybrid, is a mild parallel hybrid system using Maxwell ultracapacitor on-board energy storage, and was tested to have an observed overall average fuel consumption of 4.75 mpg ‑US (49.5 L/100 km; 5.70 mpg ‑imp ). The Gillig/BAE series hybrid , branded HybriDrive, had comparable fuel consumption, at 4.64 mpg ‑US (50.7 L/100 km; 5.57 mpg ‑imp ) (40-foot) and 3.96–6.14 mpg ‑US (59.4–38.3 L/100 km; 4.76–7.37 mpg ‑imp ) (40-foot, Manhattan and HD-UDDS driving cycles, respectively). The Gillig/Allison dual-mode (series/parallel) hybrid

3400-675: The Gilig Low Floor. Introduced in 2017, the Low Floor Plus is more mildly restyled compared to the Gillig BRT and BRT Plus. The Low Floor Plus features the headlights of the BRT and full-length roof fairings similar to the BRTPlus, but retains the same windshield and rear end cap as the traditional Low Floor model. The Gillig Trolley is a trolley-replica bus produced in collaboration with Cable Car Classics of Healdsburg, California . It

3485-453: The Gillig BRT has projector headlights. The Gillig BRT is available with CNG, Diesel and Diesel-Electric Hybrid drivetrains. The Gillig BRT Plus is a variant of the BRT which features a full-length roof fairing which hides equipment which can include A/C units, CNG fuel tanks, or batteries. The Plus made its debut in 2011 with Long Beach Transit #1201, which is also the first Compressed Natural Gas (CNG) BRT produced. The newest variant of

Gillig Low Floor - Misplaced Pages Continue

3570-537: The Gillig Low Floor has featured a range of Cummins engines along with Caterpillar and Detroit Diesel engines. Allison, Voith, and ZF automatic transmissions are available. Since 2004, the Gillig Low Floor has been available in a diesel-electric hybrid configuration with the Cummins ISB engine; hybrid models are identified by their roof-mounted battery pack. Hybrid models have been produced with Allison, BAE, and Voith series- and parallel-hybrid powertrains. In 2008,

3655-496: The Gillig Trolley is available with optional power trains, including Allison hybrid-electric, all-electric, and CNG. Transit bus These are distinct from all-seated coaches used for intercity travel and smaller minibuses , for more flexible services. The US Federal Transit Administration offers some definitions of terms for a bus in public transit service. "Bus means a rubber-tired automotive vehicle used for

3740-430: The ICE and the wheels, the engine can run at a constant and efficient rate regardless of vehicle speed, achieving higher efficiency (37%, rather than the ICE average of 20% ) and at low or mixed speeds this could result in ~50% increase in overall efficiency (19% vs 29%). Lotus offered an engine/generator set design that runs at two speeds, giving 15 kW of electrical power at 1,500 rpm and 35 kW at 3,500 rpm via

3825-505: The ICE can also act as a generator for supplemental recharging. This makes them more efficient in urban 'stop-and-go' conditions. They use a smaller battery pack than other hybrids. Honda 's early Insight, Civic , and Accord hybrids using IMA are examples of production parallel hybrids. General Motors Parallel Hybrid Truck (PHT) and BAS Hybrids such as the Saturn Vue and Aura Greenline and Chevrolet Malibu hybrids also employ

3910-538: The Low Floor has replaced the Phantom entirely, becoming the sole vehicle platform offered by the company since 2008. Offered in three body lengths and multiple body configurations, the Low Floor is offered for a variety of transit applications. It is offered with conventional diesel, diesel-electric hybrid, compressed natural gas, and battery-electric powertrain options. The model line is currently assembled by Gillig at its Livermore, California facility; prior to 2017,

3995-486: The Orange County cycle fell in between). Observed energy consumption was 3.04 kW⋅h/mi (11.1 mpg‑e) (Manhattan), 2.27 kW⋅h/mi (14.8 mpg‑e) (Orange County), and 2.09 kW⋅h/mi (16.1 mpg‑e) (HD-UDDS). The Cummins TM4 traction motor had a rated output of 262.5 to 562.5 kW (352 to 754 hp). Gillig partnered with Kiepe Electric to build 45 "NexGen" trolleybuses for

4080-509: The Prius c). The Generation 4 HSD eliminates the second planetary gear set, and places the electric motors on parallel axes, with a combining gear in between these axes, and transfers the combined result to the final drive differential. This is quite similar to Toyota-affiliated Aisin Seiki 's hybrid system, and saves significant space. General Motors , BMW , and DaimlerChrysler collaborated on

4165-648: The battery, which can also be charged from external sources. Nissan 's e-Power line ( Note , Serena , Kicks , X-Trail , and Qashqai ) using the engine to drive a generator and the EM57 traction motor. Mazda 's MX-30 , is optionally equipped with a range extender. BMW's i3 attached the generator only to the battery. ThunderVolt hybrid transit buses and transit buses fitted with BAE Systems (formerly Lockheed Martin ) HybriDrive powertrains are also serial hybrids. Electric motors are more efficient than ICEs, with high power-to-weight ratios providing torque over

4250-512: The buses used outside of this area being more varied with buses purchased with other factors in mind. Some regional-size operators for capital cost reasons may use transit buses interchangeably on short urban routes as well as longer rural routes, sometimes up to 2 or 3 hours. Often transit bus operators have a selection of 'dual-purpose' fitted buses, that is standard transit buses fitted with coach-type seating, for longer-distance routes. Sometimes transit buses may also be used as express buses on

4335-424: The car or both coupled up jointly giving drive. This is the most common hybrid system as of 2016. If they are joined at an axis (in parallel) , the speeds at this axis must be identical and the supplied torques will add together (most electric bicycles are of this type). When only one of the two sources is in use, the other must be connected via a one-way clutch or freewheel so it can rotate freely. With cars

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4420-574: The central business district and outlying suburbs. Commuter bus service also may include other service, characterized by a limited route structure, limited stops and a coordinated relationship with another mode of transportation. They may closely follow the routing of a conventional bus route but not stopping at every stop or not making detours such as into residential or commercial areas that conventional routes may take. [REDACTED] Media related to Transit buses at Wikimedia Commons Parallel hybrid Hybrid vehicle drivetrains transmit power to

4505-409: The design, distinguished primarily by the reconfiguration of the entry doors (replacing the central entry with dual entry doors). Following the renaming of the model line, Gillig introduced the Low Floor as an expansion of its product range, marketed alongside the step-entrance Phantom. During its production, the Low Floor has undergone several revisions to its body design. In 2002, the windshield

4590-428: The different motors are at providing motive power: the ICE may be dominant (engaging the electric motor only in specific circumstances) or vice versa; while in others can run on the electric system alone but because current parallel hybrids are unable to provide electric-only or internal combustion-only modes they are often categorized as mild hybrids (see below). Parallel hybrids rely more on regenerative braking and

4675-415: The drive-train's ability to operate in all-electric (Mode 1, or Input-Split ) as well as hybrid (Mode 2, or Compound-Split ) modes. The design allows for operation in more than two modes. Two power-split modes are available, along with several fixed-gear (essentially parallel hybrid) regimes. Such a design can be referred to as a multi-regime design. The Two-Mode Hybrid powertrain design can be classified as

4760-419: The driver controlled doors, use air pressure to force them open, patron-operated doors, can push them open, however, the doors are heavy, so the touch-to-open or push bar mechanism, sends pressurized air to open the doors. Most doors will signify that they are unlocked and open with lights, this gives guide to those who are going up or down the door steps to not trip and fall. Unlocked or open doors, will trigger

4845-469: The driving wheels for hybrid vehicles . A hybrid vehicle has multiple forms of motive power, and can come in many configurations. For example, a hybrid may receive its energy by burning gasoline, but switch between an electric motor and a combustion engine . A typical powertrain includes all of the components used to transform stored potential energy . Powertrains may either use chemical, solar, nuclear or kinetic energy for propulsion. The oldest example

4930-550: The early 20th century in racing cars, including the Lohner–Porsche Mixte Hybrid . Porsche named the system System Mixte, which had a wheel hub motor arrangement, with a motor in each of the two front wheels, setting speed records. This approach isolates the engine from demand, allowing it to operate only at its most efficient speed. The engine can be much smaller, since it does not have to accommodate high speed/acceleration. Traction motors are typically powered only by

5015-517: The early 20th century, no bus had cooling beyond opening the windows). In the US, the Americans with Disabilities Act requires space for passengers using a wheelchair, and requires easy access of the wheelchair onto the bus. The passenger information systems inside the bus came about both because of digital technology and to meet accessibility requirements. Some industry members and commentators promote

5100-545: The electrically driven wheels during cruise. This allows a simpler approach to power-management. This layout also has the advantage of providing four-wheel-drive in some conditions. (An example of this principle is a bicycle fitted with a front hub motor, which assists the cyclist's pedal power at the rear wheel.) Vehicles of this type include the Audi 100 Duo II and Subaru VIZIV concept cars, Peugeot 3008 , Peugeot 508 , 508 RXH , Citroën DS5 (all using PSA 's HYbrid4 system),

5185-643: The electronic accessories. General Motors then introduced their BAS Hybrid system, another mild-hybrid implementation officially released on the 2007 Saturn Vue Green Line . Its "start-stop" functionality operates similarly to the Silverado, although via a belted connection to the motor/generator unit. However the GM BAS Hybrid System can also provide modest assist under acceleration and during steady driving, and captures energy during regenerative (blended) braking. BAS Hybrid offered as much as

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5270-569: The engine and wheels is discarded. The engine instead acts as an electric generator, attached to the battery via cable. The linkage is engine to battery to electric motor to wheels. In some cases, the generator also directly links to the motor. This serial arrangement is common in diesel–electric locomotives and ships (the Russian river ship Vandal , launched in 1903, was the world's first diesel-powered and diesel–electric powered vessel). Ferdinand Porsche successfully used this arrangement in

5355-461: The favorable region of the brake specific fuel consumption map, significantly contributes to the higher overall efficiency of the vehicle. Interesting variations of the simple design (pictured at right) found, for example, in the well-known Toyota Prius are the: The Toyota Hybrid System THS / Hybrid Synergy Drive has a single power-split device (incorporated as a single three-shaft planetary gearset) and can be classified as an Input-Split, since

5440-677: The first buses for Hertz (named the Gillig H2000LF) entered production, with Hertz placing the H2000LF in service at Logan International Airport in Boston (expanding to other airports in the United States). Gillig would produce the H2000LF for Hertz through 2005, as the design was replaced by standard Gillig Low Floor buses. In 1997, Gillig developed the H2000LF shuttle bus into the Low Floor transit bus. Several changes were made to

5525-429: The first ever flight of a series hybrid powertrain. Diamond Aircraft state that the technology is scalable to a 100-seat aircraft. If the motors are attached to the vehicle body, flexible couplings are required but not if the traction motors are integrated into the wheels . One disadvantage is that the unsprung mass increases and suspension responsiveness decreases, which impacts ride and potentially safety. However

5610-641: The first of the 41 regular production models arrived in August 2019. The final bus was delivered in September 2020. The Gillig Low Floor series is currently and formerly available the following engine and transmission options: Gillig also manufactures four models of buses based on the Low Floor chassis: the Low Floor BRT, Low Floor BRT Plus, Low Floor Plus, and the Low Floor Trolley. All have

5695-478: The high number of high-profile urban operations, transit buses are at the forefront of bus electrification, with hybrid electric bus , all-electric bus and fuel cell bus development and testing aimed at reducing fuel usage, shift to green electricity and decreasing environmental impact . Developments of the transit bus towards higher capacity bus transport include tram-like vehicles such as guided buses , longer bi-articulated buses and tram-like buses such as

5780-444: The idea of making the interior of a transit bus as inviting as a private car, recognising the chief competitor to the transit bus in many markets. As they are used in a public transport role, transit buses can be operated by publicly run transit authorities or municipal bus companies , as well as private transport companies on a public contract or fully independent basis. Due to the local authority use, transit buses are often built to

5865-686: The impact should be minimal as electric motors in wheel hubs such as Hi-Pa Drive , may be very small and light having exceptionally high power-to-weight ratios and braking mechanisms can be lighter as the wheel motors brake the vehicle. Advantages of individual wheel motors include simplified traction control , all wheel drive if required and a lower floor (useful for buses and other specialised vehicles (some 8x8 all-wheel drive military vehicles use individual wheel motors). Diesel–electric locomotives have used this concept (individual motors driving axles of each pair of wheels) for 70 years. Other measures include lightweight aluminium wheels to reduce

5950-577: The integrated electrical generator, used in the Nissan concept Infiniti Emerg-e . This operating profile allows greater scope for alternative engine designs, such as a microturbine , rotary Atkinson cycle engine or linear combustion engine . The ICE is matched to the electric engine by comparing the output rates at cruising speed . Generally, output rates for combustion engines are provided for instantaneous (peak) output rates, but in practice these can't be used. The use of an electric motor driving

6035-537: The job of larger motors when compared to single-mode systems, because the derived electrical peak power is proportional to the width of the continuous variation range. The four fixed gears enable the Two-Mode Hybrid to function like a conventional parallel hybrid under high continuous power regions such as sustained high speed cruising or trailer towing. Full electric boost is available in fixed-gear modes. These contain two different energy recovery systems. This

6120-650: The power of the engine is split at the input to the transmission. This in turn makes this setup very simple in mechanical terms, but has drawbacks of its own. For example, in Generation 1 and Generation 2 HSDs maximum speed is mainly limited by the speed of the smaller electric motor (often functioning as a generator). The Generation 3 HSD separates the ICE-MG1 path from the MG2 path, each with its own, tailored gear ratio (1.1:1 and 2.5:1, respectively, for late Priuses, including

6205-417: The power supplied by the primary source from the power demanded by the driver. ICE torque output is minimal at lower RPMs and conventional vehicles increase engine size to meet market requirements for acceptable initial acceleration. The larger engine has more power than needed for cruising. Electric motors produce full torque at standstill and are well-suited to complement ICE torque deficiency at low RPMs. In

6290-587: The powertrain. The Gillig Low Floor is produced in three nominal body lengths in its standard transit bus configuration: 40 ft (12.2 m). Maximum seating capacity is 40 passengers for the 40-foot length. The turning radius of the Gillig Low Floor is 43 ft (13.1 m) (40 foot body). Currently (as of 2019 production), the Gillig Low Floor range is equipped with three engines: the Cummins B6.7 diesel, Cummins L9 diesel, and Cummins L9N compressed natural gas inline-six engines. Throughout its production,

6375-503: The provision of public transportation service by or for a recipient of FTA financial assistance." FTA also adds that automotive means that the bus does not rely on external power sources for its motion; its motor and fuel or battery are contained in the bus. It defines public transportation service as "the operation of a vehicle that provides general or special service to the public on a regular and continuing basis consistent with 49 U.S.C. Chapter 53." Another US agency further distinguishes

6460-399: The same engine and transmission options as the standard Low Floor. The Gillig BRT is a restyled version of the Low Floor with different front and rear fascias. It wears a more futuristic look than the standard model. It is available in the same lengths as the standard Low Floor model, although the front fascia adds roughly an extra foot of length to the bus. Instead of sealed-beam headlights,

6545-471: The strict definition of hybrid because the electric drive transmission directly replaces the mechanical transmission rather than being a supplementary source of motive power. One of the earliest forms of hybrid land vehicle was the 'trackless' trolleybus experiment in The United States (New Jersey) that ran from 1935 to 1948, which normally used traction current delivered by wire. The trolleybus

6630-423: The system could be expanded without installing more overhead wire; to facilitate off-wire operation, the driver could move the poles up and down without leaving their seat. Four prototypes were supplied in 2014: two used diesel engines to operate off-wire, while the other two used storage batteries. The remaining 41 would be equipped with storage batteries; the prototypes would be tested for more than five years before

6715-402: The truck is coasting, braking, or stopped, yet restart quickly to provide power. Accessories can continue to run on electrical power while the engine is off, and as in other hybrid designs, regenerative braking recaptures energy. The large electric motor spins up the engine to operating-speeds before injecting fuel. The 2004–2007 Chevrolet Silverado PHT was a full-size pickup truck . Chevrolet

6800-399: The two sources may be applied to the same shaft (for example with the electric motor connected between the engine and transmission), turning at equal speeds and the torques adding up with the electric motor adding or subtracting torque to the system as necessary. (The first two generations of Honda Insight use this system.) Parallel hybrids can be further categorized by the balance between

6885-499: The vehicle was assembled in Hayward, California . The Gillig Low Floor began life in the mid-1990s as Gillig was approached by Hertz Corporation , who sought a shuttle bus for its airport locations (to replace its fleet of GMC RTS buses). Featuring a carpeted interior, luggage racks, and a central entry door, the primary design requirement of Hertz was a low-floor entry for those carrying luggage or with limited mobility. In 1996,

6970-399: Was able to get a 10% efficiency improvement by shutting down and restarting the engine on demand and using regenerative braking. The electrical energy was used only to drive accessories such as power steering. The GM PHT used a 42 volt system via three 12 volt vented lead acid batteries connected in series (36V total) to supply the power needed for the startup motor, as well as to power

7055-438: Was enlarged (with the use of a smaller destination sign) and the side windows were reduced in width. After 2003, the rear side split windows that were configured upside down were reconfigured to match the rest of the side windows; frameless windows later became an option (with or without split openings). In 2005, the Low Floor model line was expanded by the addition of the Low Floor BRT, adding restyled front and rear bodywork and

7140-544: Was fitted with an internal combustion engine to power the mechanical drivetrain directly, not to generate electricity for the traction motor. This enabled the vehicle to be used for revenue service where there was no contact wire. Since the 1990s trolleybus hybrids have been introduced with small power plants to provide a low speed capability for emergency and maintenance but not to support general revenue service. Parallel hybrid systems have both an internal combustion engine and an electric motor that can both individually drive

7225-587: Was similar, at 3.64–6.40 mpg ‑US (64.6–36.8 L/100 km; 4.37–7.69 mpg ‑imp ) (40-foot (12.2 m), Manhattan and HD-UDDS driving cycles). A fully electric configuration was introduced in 2019, with serial production commencing in 2020; it was developed as a prototype at the request of Big Blue Bus , (who was the lead customer for the model) which had reduced an order of 20 CNG buses to 19 in order to test an all-electric powertrain system developed by Cummins (branded "Cummins Battery Electric System"). The buses use plug-in charging with

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