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exhaust-gas recirculation

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ex⋅haust-gas recircula⋅tion

[ig-zawst-gas]
–noun Automotive.
a method of returning part of the exhaust gases to an engine by means of a valve (EGR valve) in order to reduce the combustion temperature, which leads to a reduction in the formation of pollutants. Abbreviation: EGR
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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