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Why are exhaust gases literally non-existent in CNG vehicles?

April 26, 2017CNG exhaust gases Literally non-existent vehicles

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Why are exhaust gases literally non-existent in CNG vehicles?

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A major positive aspect of CNG use is that being a natural gas (methane content) its exhaust emissions contain just water vapour and minuscule quantity of carbon monoxide, no carbon or other particles. Being virtually pollution free CNG driven vehicles meet the most stringent of emission standards worldwide.