EGR valve 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 (NOx) emissions reduction technique used in petrol/gasoline and diesel engines.EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders.GR valve 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 (NOx) emissions reduction technique used in petrol/gasoline and diesel engines.
â¢ FALL OUT (verb) The verb FALL OUT has 5 senses: 1. have a breach in relations. 2. come as a logical consequence; follow logically. 3. come off. 4. leave (a barracks) in order to take a place in a military formation, or leave a military formation. 5. come to pass. Familiarity information: FALL OUT used as a verb is common.
Define bail out. bail out synonyms, bail out pronunciation, bail out translation, English dictionary definition of bail out. or vb 1. to make an emergency parachute jump from an aircraft 2. informal to help out of a predicament: the government bailed the company out. 3.