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The goal of EGR is thus to reduce NO x production by reducing the combustion temperatures. In modern diesel engines, the EGR gas is usually cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas. However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR).
[77] [full citation needed] In turbocharged engines, EGR needs a controlled pressure differential across the exhaust manifold and intake manifold, which can be met by such engineering as use of a variable geometry turbocharger, [citation needed] which has inlet guide vanes on the turbine to build exhaust backpressure in the exhaust manifold ...
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
The driving tour featured a fleet of 23 Audi TDI vehicles from 4 models (Audi Q7 3.0 TDI, Audi Q5 3.0 TDI, Audi A4 3.0 TDI, Audi A3 Sportback 2.0 TDI with S tronic transmission) travelling across the American continent from New York to Los Angeles, passing major cities like Chicago, Dallas and Las Vegas during the 13 daily stages, as well as ...
Audi S5 Coupé (8T3, Germany) Audi S5 Cabriolet (8F7, Australia) The Audi S5 was released in coupé form to the public at the same time as the A5. The Audi S5, in comparison to the A5, features a different fascia (as do most Audi S and RS models ), including a string of LED daytime running lights around the bi-Xenon headlamps and a vertically ...
The Volvo Engine Architecture [13] (VEA) is a family of straight-three and straight-four automobile petrol and diesel engines produced by Volvo Cars in Skövde, [30] Sweden, since 2013, [31] Zhangjiakou, [32] China, since 2016 [33] and Tanjung Malim, Malaysia, since 2022 by Proton. [34]
The Mercedes-Benz C-Class (W203) is the internal designation for a range of compact executive cars manufactured and marketed by DaimlerChrysler from 1999 to 2010, as the second generation of the C-Class — in sedan/saloon, three-door hatchback coupé (marketed as the SportCoupé and sub-designated CL203) and station wagon/estate (sub-designated S203) body styles.
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