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  2. Exhaust gas recirculation - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas_recirculation

    EGR valve the top of box on top of the inlet manifold of a Saab H engine in a 1987 Saab 90. In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NO x) emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. [1]

  3. 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 ...

  4. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    The crankcase air outlet, where the PCV valve is located, is generally placed as far as possible from the crankcase breather. For example, the breather and outlet are frequently on opposite valve covers on a V engine, or on opposite ends of the valve cover on an inline engine. The PCV valve is often, but not always, placed at the valve cover ...

  5. EGR valve - Wikipedia

    en.wikipedia.org/?title=EGR_valve&redirect=no

    This page was last edited on 23 May 2005, at 02:46 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...

  6. Is your heater making you sick? How to avoid cold-like ...

    www.aol.com/lifestyle/heater-making-sick-avoid...

    “However, if symptoms last more than a week, you may want to check in with your family doctor, as these symptoms could progress to sinus infections, worsening allergies or asthma exacerbations ...

  7. Norovirus cases are surging. A doctor explains what to look for

    www.aol.com/news/norovirus-cases-surging-doctor...

    CNN: What symptoms should people expect and for how long? Wen: Symptoms of norovirus include nausea, vomiting, diarrhea and stomach cramps. Some people may also experience fatigue, low-grade fever ...

  8. Ex-Abercrombie & Fitch CEO has dementia, lawyers say - AOL

    www.aol.com/ex-abercrombie-fitch-ceo-dementia...

    The former CEO of Abercrombie & Fitch (A&F) has dementia and late onset Alzheimer's disease, his legal team has said in a court document filed in New York. Lawyers for Mike Jeffries have requested ...

  9. 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 ...