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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. Diesel exhaust - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust

    [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 ...

  4. Isuzu 6H engine - Wikipedia

    en.wikipedia.org/wiki/Isuzu_6H_Engine

    The Isuzu 6H is a family of inline six-cylinder diesel engines installed in Isuzu medium-duty trucks, and also installed in GM medium-duty trucks as the Duramax LG4. It is mated to the Allison 2500, 3000, and 3500 series transmissions.

  5. Duramax V8 engine - Wikipedia

    en.wikipedia.org/wiki/Duramax_V8_engine

    The L5P Duramax is the latest version of the Duramax V8 diesel engine.(engine code Y). Introduced in the 2017 model year, it was the most powerful diesel engine GM had produced, with 445 hp (332 kW) at 2,800 rpm and 910 lb⋅ft (1,234 N⋅m) at 1,600 rpm.

  6. MAP sensor - Wikipedia

    en.wikipedia.org/wiki/MAP_sensor

    The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...

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  8. Can cold weather make you sick? Your grandma wasn't entirely ...

    www.aol.com/cold-weather-sick-grandma-wasnt...

    Cooler weather can dampen the immune system, which makes our bodies more susceptible to infection. The body is generally good at responding to drops in temperature, but the nose and upper ...

  9. ‘Doctors Dismissed My Chronic Cough As Allergies. It Was ...

    www.aol.com/lifestyle/doctors-dismissed-chronic...

    More mysterious symptoms started showing up—and I finally hit my breaking point. After about three months, I got a rash all over my legs. I had horrible cramping in my stomach, was exhausted all ...

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