Patent ID: 6230697
Filing Date: 2001-05-15
Classification: F02B,F02D,F02M,G06Q,Y02T

Abstract:
A diesel engine control system with an automotive emission control system comprising:an exhaust-gas recirculation value employed in an exhaust-gas recirculation system for sending some of exhaust gas back through an internal combustion engine;engine-operating conditions detection means for detecting operating conditions of the engine, said operating conditions including at least a fuel-injection amount;intake-pressure detection means for detecting an intake pressure;desired exhaust-gas recirculation rate calculation means for calculating a desired exhaust-gas recirculation rate directly based on the intake pressure (Pm) as well as the engine operating conditions, so that an amount of exhaust gas recirculated through said exhaust-gas recirculation valve into an intake system of the engine is prevented from being affected by the intake pressure (Pm); andexhaust-gas recirculation valve control means for adjusting an opening of said exhaust-gas recirculation valve towards the desired exhaust-gas recirculation rate calculated directly based on the intake pressure (Pm) as well as the engine operating conditions.