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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).
More simply they may be oil-water coolers, where an oil pipe is inserted inside the water radiator. Though the water is hotter than the ambient air, its higher thermal conductivity offers comparable cooling (within limits) from a less complex and thus cheaper and more reliable [citation needed] oil cooler. Less commonly, power steering fluid ...
Audi A3 TDI Clubsport quattro is a concept car unveiled in 2008. Based on the Audi A3 three-door, it is an approach by Audi to address both performance and the environment. The engine in the concept car is a turbocharged 2.0-litre diesel producing 224 hp (167 kW) and 332 lb⋅ft (450 N⋅m) of torque.
Heavy rainfall in Bolivia over Saturday night caused the Pasajahuira river to overflow, flooding the neighborhood of Bajo Llojeta on the outskirts of La Paz and leaving many people trapped in ...
Atmospheric rivers could become stronger and have more impacts along the West Coast due to climate change. A new study shows how water rise and increased rainfall could impact residents who face ...
[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 ...
21% of Americans have chronic pain. A new study found that diets rich in vegetables, fruits, grains, lean proteins, and dairy was linked to less chronic pain.
The Multitronic system uses a link-plate chain drive, [2] an oil-cooled multi-plate clutch [2] (initially of six parts, [2] later of seven to enable it to cope better with the high torque outputs of larger turbodiesel engines), and complex electronics, to overcome the traditional shortcomings of CVTs, [2] and allow a CVT transmission to be ...