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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).
This engine is part of Audi's modular 90° V6/V8 engine family. It shares its bore and stroke, 90° V-angle, and 90mm cylinder spacing with the Audi V6. The earlier V6 engines (EA837) used an Eaton TVS Supercharger instead of turbocharger(s). In 2016, Audi and Porsche released a new turbocharged V6 engine they dubbed EA839.
This differs from naturally aspirated applications where the intake manifold will remain in vacuum while under load. Thus, when a forced induction engine is under load, the intake manifold can no longer be used to draw blow-by gasses out of the crankcase and will instead begin to exacerbate the problem by increasing crankcase pressure.
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 ...
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.
A wastegate is a valve that controls the flow of exhaust gases to the turbine wheel in a turbocharged engine system. [1]Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor.
An Indiana school bus driver was busted for allegedly driving under the influence — with some of the 32 kids on her bus calling in to report her driving them erratically, authorities said.
The season for snowfall has already begun in several parts of the country, and one of the most laborious chores related to the winter weather is snow shoveling.. Though the task may just be ...