Exhaust Gas Recirculation

Exhaust Gas Recirculation (EGR): Exhaust Gas Recirculation System. Became common by 1973. On an EGR engine, there are extra exhaust ports inside the cylinder heads that exhaust gases flow back into the air/fuel intake stream. The flow of these gases is controlled with a vacuum actuated piece called an EGR valve. It completes a connection […]
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