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  2. Exhaust gas recirculation - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_recirculation

    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).

  3. Mazda diesel engines - Wikipedia

    en.wikipedia.org/wiki/Mazda_diesel_engines

    newly developed EGR cooler; Euro Stage V emission rating; new Selective catalytic reduction (SCR) system with AdBlue additive significantly reduces NO x emissions (currently only in Mazda CX-7, in special 15.5 litres (4.1 US gal; 3.4 imp gal) tank located under the luggage compartment, lasts over 20,000 km (12,000 mi) under normal driving ...

  4. GM Ecotec engine - Wikipedia

    en.wikipedia.org/wiki/GM_Ecotec_engine

    The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 1.2 and 2.5 litres.Confusingly, the Ecotec name was also applied to both the Buick V6 Engine when used in Holden Vehicles, as well as the final DOHC derivatives of the previous GM Family II engine; the architecture was substantially re-engineered for this new Ecotec ...

  5. Turbocharger - Wikipedia

    en.wikipedia.org/wiki/Turbocharger

    Cut-away view turbocharger (turbine section on the left, compressor section on the right) In an internal combustion engine, a turbocharger (also known as a turbo or a turbosupercharger) is a forced induction device that is powered by the flow of exhaust gases.

  6. Hush kit - Wikipedia

    en.wikipedia.org/wiki/Hush_kit

    Hush kit for the Pratt and Whitney JT8D-1 through -17 engines Two JT4As installed on a KLM DC-8. A hush kit is an aerodynamic device used to help reduce the noise produced by older aircraft jet engines. These devices are typically installed on older turbojet and low-bypass turbofan engines, as they are much louder than later high-bypass ...

  7. Detroit Diesel V8 engine - Wikipedia

    en.wikipedia.org/wiki/Detroit_Diesel_V8_engine

    6.2L fitted to a 1987 HMMWV. The original 6.2 L (379 cu in) diesel V8 was introduced in 1982 for the Chevrolet C/K and was produced until 1993. The 6.2L diesel emerged as a high-fuel-economy alternative to the V8 gasoline engine lineup, and achieved better mileage than Chevrolet's 4.3L V6 gasoline engine of the 1980s, at a time when the market was focused on power rather than efficiency.

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