Patent ID: 6957642
Filing Date: 2005-10-25
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. An exhaust gas recirculation control system comprising: exhaust gas recirculation control means for recirculating a portion of exhaust gas from an exhaust system of an engine to an air intake system of the engine; intake air regulating means for regulating air intake at a position upstream of a position where the exhaust gas recirculation control device connects to the air intake system; feedback control section means for feedback controlling an exhaust gas recirculation quantity of the exhaust gas to be recirculated to the air intake system; excess air ratio control means for adjusting an excess air ratio in response to a request to change the excess air ratio by using the intake air regulating device to change an intake air quantity; and feedback control restricting means for temporarily restricting feedback control of the exhaust gas recirculation quantity delivered by the exhaust gas recirculation control device when the excess air ratio is being adjusted.