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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]
DVVLi: Discrete variable valve lift, includes intake valve cam phasing; eACC: Improved electric accessories; EAT: Electronically assisted turbocharging; EFI: Electronic Fuel Injection; EGR: Exhaust gas recirculation; ehCVA: Electrohydraulic camless valve actuation; emCVA: Electromagnetic camless valve actuation; EHPS: Electrohydraulic power ...
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 ...
A compression release brake (also known as a Jacobs brake or "jake brake"), is the type of brake most commonly confused with real engine braking; it is used mainly in large diesel trucks and works by opening the exhaust valves at the top of the compression stroke, so the large amount of energy stored in that compressed air is not returned to ...
[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 ...
The Toyota Dynamic Force engine is a family of internal combustion engines developed by Toyota under its Toyota New Global Architecture (TNGA) strategy. These I3, I4 and V6 engines can be operated with petrol (gasoline) or ethanol and can be combined with electric motors in a hybrid drivetrain.
Homogeneous charge compression ignition (HCCI) is a form of internal combustion in which well-mixed fuel and oxidizer (typically air) are compressed to the point of auto-ignition. As in other forms of combustion , this exothermic reaction produces heat that can be transformed into work in a heat engine .
EGR may refer to: Transportation. Eagle Air (Guinea) (ICAO code), a Guinean airline; Eagle Air (Sierra Leone) (ICAO code), a defunct Sierra Leonean airline;