Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-10-12
1996-01-09
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123478, 123571, F02P 515, F02D 4104, F02M 2507
Patent
active
054820200
ABSTRACT:
A control system for an internal combustion engine includes an exhaust gas recirculation passage extending between the intake system and the exhaust system, for recirculating part of exhaust gases emitted from the engine, an EGR valve for controlling a flow rate of exhaust gases to be recirculated through the exhaust gas recirculation passage, and an ECU which detects an operating condition of the EGR valve, and calculates an amount of fuel to be injected, based on operating conditions of the engine. Further, the ECU calculates dynamic characteristics of the exhaust gases to be recirculated, based on operating conditions of the engine, a virtual operation amount of the EGR valve, based on the dynamic characteristics, a recirculation rate of exhaust gases, based on the virtual operation amount as well as operating conditions of the engine, and a recirculation rate of inert gases present in exhaust gases to be recirculated, based on the exhaust gas recirculation rate as well as the concentration of oxygen present in the exhaust gases, and corrects the amount of the fuel to be injected, based on the inert gas recirculation rate.
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Hara Yoshihisa
Miyashita Kotaro
Shimizu Daisuke
Yoshio Yamamoto
Honda Giken Kogyo K.K.
Lessler Arthur L.
Wolfe Willis R.
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