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17-500: From 1997 to 2004, the DT was also rebadged and sold by Detroit Diesel as the Series 40 . The Navistar DT diesel engines are of a wet-sleeve design. This means that the cylinder wall (sleeve) is a separately machined part that fits into the cylinder bores cast into the engine block. The cylinder sleeve is in contact with the engine coolant, hence the "wet"-sleeve. Navistar claims that

34-546: A Bosch P style pump, and starting what was called New Generation Diesel engine design, which is still the same basic block design. Mechanical injection was still utilized in trucks up into the 1997 year, but this is rare. In 1994, due to tightening emissions regulations, the engines were redesigned to use electronically controlled unit direct fuel injection. From 1994 to 2004, the engines used HEUI (Hydraulically actuated Electronically controlled Unit Injection) injectors, co-developed by Navistar and Caterpillar Inc. From 2004 to 2009,

51-470: A Virtual Technician service. Detroit engines, transmissions, and axles are used in several models of truck manufactured by Daimler Truck North America. Detroit Diesel consists of manufacturing operations of axles, transmissions and diesel engines for on-highway only, which is owned by Daimler Truck AG . The former off-highway division was sold to MTU Friedrichshafen in 2006 and subsequently purchased by Rolls-Royce in 2014. The ancestor of Detroit Diesel

68-459: A subsidiary of Daimler Truck North America , which is itself a wholly owned subsidiary of the multinational Daimler Truck AG . The company manufactures heavy-duty engines and chassis components for the on-highway and vocational commercial truck markets. Detroit Diesel has built more than 5 million engines since 1938, more than 1 million of which are still in operation worldwide. Detroit Diesel's product line includes engines, axles, transmissions, and

85-552: The United States Environmental Protection Agency . Changes to the engines included a new turbocharger (called EVRT , for "Electronic Variable Response Turbocharger") with movable turbo vanes to improve boost and reduce lag, a new, electronically controlled hydraulic unit fuel injection system, Exhaust Gas Recirculation with heat exchanger to compensate for improved thermal efficiency, and new four-valve cylinder heads. [1] In 2007,

102-520: The DT engines were updated once again for compliance with 2010 emissions standards. They all received new, twin turbochargers, with higher-rated versions of the MaxxForce DT and all MaxxForce 9 and 10 engines receiving intercooling and aftercooling. Upgrades to fuel injectors, the EGR system, and cooling were also part of the 2010 modifications. 2015 was the final production year for the MaxxForce DT. It

119-413: The DT engines were updated once again to comply with stricter 2007 emissions standards. The DT 466, DT 570, and HT 570 engines were renamed MaxxForce DT, MaxxForce 9, and MaxxForce 10, respectively. Among the new features were closed-crankcase ventilation and new wiring harnesses. The MaxxForce engines were first available in model year 2008 International trucks and IC Corporation school buses. In 2010

136-587: The MaxxForce D brand. The final generation MaxxForce DT was known as the MaxxForce D7.6I6, and the MaxxForce 10 was known as the MaxxForce D9.3I6. Modifications from the civilian versions included diamond-coated (metal nitride coating) injectors to enable the engines to run on JP-8 fuel. Other Variants: In 2004, the entire DT family of engines was updated to meet 2004 emissions standards set out by

153-495: The crankshaft, block, pistons, and connecting rods, the short block engines were stored temporarily and completed the remaining assembly in early 2010 for use in trucks and buses of in model year 2010. These engines were alleged not to comply with stricter 2010 emission standards. Diesel engine Too Many Requests If you report this error to the Wikimedia System Administrators, please include

170-424: The cylinder) and can easily be replaced, which Navistar claims enables simpler restoration to original specifications. The wet-sleeve design also allows the engine to be rebuilt easily to factory specifications, sometimes without even removing the engine from the vehicle. This design is opposed to parent bore engines, where the cylinder walls are machined out of the bores cast into the block. International states that

187-553: The engines use International's Electro-Hydraulic Generation Two (G2) unit injectors. From the time the United States Environmental Protection Agency 's 2007 emissions regulations went into effect, the Navistar DT engines were available in three configurations in what turned out to be their final generation prior to discontinuation. These variants were renamed to conform to International's then-new MaxxForce engine brand. The engines were also available for defense applications under

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204-653: The late 1930s; a smaller engine using a similar two-stroke design was developed by engineers at GM Research, which led to the first 6-71 , manufactured in 1938. To know the series model one can find out by checking the layout of the overall engine. In 1998, the EPA announced fines totaling $ 83.4 million against Detroit Diesel and six other diesel engine manufacturers, the largest fine to date, which evaded testing by shutting down emissions controls during highway driving while appearing to comply with lab testing. The manufacturers also agreed to spend more than $ 1 billion to correct

221-584: The problem. The trucks used engine ECU software to engage pollution controls during the 20-minute lab tests to verify compliance with the Clean Air Act, but then disable the emissions controls during normal highway cruising, emitting up to three times the maximum allowed NOx pollution. In 2016, Detroit Diesel agreed to pay U.S.$ 28.5 million to resolve violations of the U.S. federal Clean Air Act. The company sold 7,786 heavy-duty diesel engines, which were assembled approximately 80% complete in 2009, including

238-404: The uneven thickness of the cylinder walls causes the cylinders to become out of round during thermal expansion, increasing wear. Also, damage to the cylinder wall requires more extensive work to repair. From 1984 until late 1995, the DT engines used a Bosch pump-line-nozzle (PLN) mechanical direct fuel injection system. 1984 through 1992 DTs used a Bosch MW style pump, while the 1993-1995s used

255-424: The wet-sleeve design enhances durability because the consistent wall thickness of the sleeve allows for consistent heat transfer, ensuring the cylinders stay round during thermal expansion. Additionally, they state that the hardened cylinder sleeve is more durable and wear resistant than a softer, cast-in wall. Also, the replaceable cylinder sleeves protect the block from damage (e.g. in case of foreign objects entering

272-562: Was discontinued for 2015, with some buses being built as 2016 models. It continued in the RE for the 2016 model. It was announced on July 22, 2016, that the RE will be produced with the Cummins ISL9 and the DT offering was going away completely. Detroit Diesel Detroit Diesel Corporation (DDC) is an American diesel engine manufacturer headquartered in Detroit, Michigan . It is

289-535: Was the Winton Engine Company, founded by Alexander Winton in 1912; Winton Engine began producing diesel engines in fall 1913. After Charles F. Kettering purchased two Winton diesels for his yacht, General Motors acquired the company in 1930 along with Electro Motive Company , Winton's primary client. Research initiated by Kettering led to the development and release of the EMD 567 locomotive engine in

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