초록 ▼

An engine control apparatus controls a throttle valve opening degree in response to a demand output of a driver. A target charged intake air amount of air taken into a cylinder per intake stroke is set in response to the demand output. Based on an air pressure generated at an upstream side of a thro

An engine control apparatus controls a throttle valve opening degree in response to a demand output of a driver. A target charged intake air amount of air taken into a cylinder per intake stroke is set in response to the demand output. Based on an air pressure generated at an upstream side of a throttle valve, the maximum actual charged intake air amount is set as a maximum value of the actual charged intake air amount taken into the cylinder per intake stroke. The target charged intake air amount is normalized by calculating a ratio of the target charged intake air amount to the maximum actual intake air amount. The throttle valve opening degree is set based on the normalized target charged intake air amount and an engine speed. Then, a signal for actuating the throttle valve is output to a throttle actuator so that the throttle valve has the set opening degree. Fuel injection amount is set based on the target charged intake air amount.

대표청구항 ▼

[ What is claimed is:] [1.] A control apparatus of an engine for controlling a throttle valve opening degree in response to a demand output of a driver, the engine having at least one cylinder, an intake pipe connected to the cylinder, a throttle valve disposed in the intake pipe, a throttle actuato

[ What is claimed is:] [1.] A control apparatus of an engine for controlling a throttle valve opening degree in response to a demand output of a driver, the engine having at least one cylinder, an intake pipe connected to the cylinder, a throttle valve disposed in the intake pipe, a throttle actuator for actuating the throttle valve and an injector for supplying fuel to the engine, the apparatus comprising:means, responsive to the demand output, for setting a target charged intake air amount of air taken into the cylinder per intake stroke;means, based on an air pressure generated at an upstream side of the throttle valve, for setting the maximum actual charged intake air amount as the maximum value of an actual charged intake air amount taken into the cylinder per intake stroke;means for normalizing the target charged intake air amount by calculating a ratio of the target charged intake air amount to the maximum actual charged intake air amount;means for setting the throttle valve opening degree based on the normalized target charged intake air amount and an engine speed; andmeans for outputting a signal for actuating the throttle valve to the throttle actuator so that the throttle valve has the opening degree set by the throttle valve opening degree setting means.