exhaust-gas emission

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• Exhaust gas recirculation — (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in most gasoline and diesel engines.EGR works by recirculating a portion of an engine s exhaust gas back to the engine cylinders. Intermixing the incoming air with recirculated… …   Wikipedia

• Exhaust gas — A diesel powered truck emits a large amount of exhaust gas while starting its engine. Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline/petrol, diesel fuel, fuel oil or coal. According to the… …   Wikipedia

• exhaust-gas recirculation — (EGR) An emission control system where some of the exhaust gases are rerouted from the exhaust manifold into the combustion chamber to make sure that all fuel is burned before entering the atmosphere. The process lowers the combustion temperature …   Dictionary of automotive terms

• exhaust gas purification system — An emission control system for diesel engines, which may consist of an exhaust scrubber, a diesel exhaust filter, and/or a catalytic converter …   Dictionary of automotive terms

• raw exhaust gas — The exhaust gas upstream of any emission control device, e.g., before it passes through a catalytic converter …   Dictionary of automotive terms

• Emission — may refer to: * Flue gas, also: ** Exhaust gas, flue gas occurring as a result of the combustion of a fuel * Emission of air pollutants * Emission (electromagnetic radiation), the process by which the energy of a photon is released by another… …   Wikipedia

• Gas engine — This article is about engines that use gaseous fuel. For gasoline engines, see Petrol engine. For other uses, see Internal combustion engine. Model of an S type Hartop Gas Engine. A gas engine means an engine running on a gas, such as coal gas,… …   Wikipedia

• exhaust — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ auto (AmE), automobile (AmE), car, engine, vehicle ▪ diesel ▪ Diesel exhaust contains a lot of soot …   Collocations dictionary

• exhaust — Synonyms and related words: abate, ablate, absorb, assimilate, attenuate, avenue, backwash, bankrupt, beat, blackdamp, bleed, bleed white, blow, blow out, blowhole, blunt, breathe, breathe hard, breathe in, breathe out, broach, burden, burn out,… …   Moby Thesaurus

• exhaust emission control system — A general term for any system that reduces the harmful exhaust emissions of a motor vehicle, including one or all of the following systems: catalytic converter (with or without oxygen sensor air/fuel control), exhaust gas recirculation, secondary …   Dictionary of automotive terms

• emission equipment — /əˈmɪʃən əˌkwɪpmənt/ (say uh mishuhn uh.kwipmuhnt) noun devices required by law to reduce motor vehicles toxic emissions, including exhaust gas, evaporated petrol, lead from leaded fuel, and gas blown out via the crankcase …