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AssigneesAisan Kogyo Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
InventorsMinoru Onobayashi, Hirokazu Konohara, Nobuhiro Ogasawara, Kunihiko Sato
Estimating the term…
An object is to prevent deterioration in both exhaust emission and fuel efficiency by suitably combining OTP boosting with power boosting. An electronic control unit (ECU) 30 of the present invention is arranged to control a fuel injection amount of an injector 7 to an engine 1 according to an operating condition of the engine 1, and perform OTP boosting of the fuel injection amount to prevent overheating of a discharge passage 3 and a catalyst converter 11 when the engine 1 comes into a high load and high rotation operating condition and perform power boosting that increases the fuel injection amount to enrich an air-fuel ratio to an output air-fuel ratio when the engine 1 comes into a high load operating condition. The ECU 30 executes the power boosting when the engine 1 comes into the high load and high rotation operating condition and executes the OTP boosting later from the start of the power boosting, delayed by a period attributable to at least the power boosting.
A fuel injection amount control apparatus for internal combustion engine, including fuel injection amount control means arranged to control a fuel injection amount of fuel injection means to the internal combustion engine according to an operating condition of the internal combustion engine, perform OTP boosting that increases the fuel injection amount in order to prevent overheating of an exhaust system when the internal combustion engine comes into a first given operating condition, and execute power boosting that increases the fuel injection amount in order to enrich an air-fuel ratio to an output air-fuel ratio when the internal combustion engine comes into a second given operating condition, and
A fuel injection amount control apparatus for internal combustion engine, including fuel injection amount control means arranged to control a fuel injection amount of fuel injection means to the internal combustion engine according to an operating condition of the internal combustion engine, perform OTP boosting that increases the fuel injection amount in order to prevent overheating of an exhaust system including a catalyst when the internal combustion engine comes into a first given operating condition, and execute power boosting that increases the fuel injection amount in order to enrich an air-fuel ratio to an output air-fuel ratio when the internal combustion engine comes into a second given operating condition, and
Dependencies are inferred from the claim text.