Mitsubishi Denki Kabushiki Kaisha

Koichi Yamane

Wataru Fukui

Masanobu Uchinami

Koji Nishimoto

Takeshi Kawakami

Shoso Tsunekazu

Masami Nakashima

Yoshitomo Fujita

An electronic control apparatus includes target FR calculator that calculates a target exciting current duty ratio FR based on an exciting current inputted from FR terminal of a regulator and flowing through field coil, and information of engine operating conditions. The electronic control apparatus also includes target FR limit value FRCLP calculator that calculates a FRCLP corresponding to a drive torque limit value based on an output of a correlative information detector. A comparator compares target FR and FRCLP, outputs a control signal within FRCLP to a control unit, and controls a duty ratio FR of exciting current flowing through a field coil not to be larger than FRCLP.

Control apparatus and control method of generator for vehicle

Fuel injection control device

A controller for a four-stroke cycle internal-combustion engine, which has a single sensor mounted on a crankshaft and employs a single sequence of position signal pulses corresponding to crank angles, achieves reduced cost and higher accuracy even for an engine with an odd number of cylinders. For each revolution of the crankshaft, a position signal pulse is issued from the sensor mounted on the crankshaft; the position signal pulse includes a reference position signal pulse in a number which is a multiple of N of the number of cylinders and a cylinder identifying signal pulse for a particular cylinder every time the crankshaft rotates. A control means includes a reference position signal generating section for identifying the reference position of each cylinder from the position signal pulse and for generating the reference position signal; a cylinder identifying section for identifying each cylinder from the position signal pulse and for generating a cylinder identifying signal; and a timing control section for generating a control signal for each cylinder in accordance with the reference position signal and the cylinder identifying signal. The control signal controls at least the ignition timing or the fuel injection timing of each cylinder.

Controller for four-stroke cycle internal-combustion engine

A fuel control device of an engine which comprises: an intake pipe pressure detecting means; a crank angle signal generating means; a transient state determining means for determining a transient state of an engine; a transient state correction fuel quantity calculating means; an averaging means for averaging the pressure data in a predetermined crank angle signal period; a basic fuel quantity selecting and calculating means for calculating a basic fuel quantity after selecting an output signal of an instantaneous value of the pressure data or an output signal of the averaging means corresponding with an output level of the transient state correction fuel quantity calculating means; a fuel injection quantity determining means for calculating a fuel injection quantity by using the transient state correction fuel quantity and the basic fuel quantity; a fuel quantity measuring means for measuring a fuel quantity for supplying by injection fuel of the fuel injection quantity by the fuel injection quantity determining means to the engine synchronizing with a crank angle signal; a nonsynchronizing fuel quantity determining means for calculating a nonsynchronizing fuel quantity in detecting of an acceleration state of the engine by comparing an instantaneous value of the pressure data with an output signal of the averaging means; and a nonsynchronizing fuel quantity measuring means for measuring a fuel quantity for supplying by injection fuel of the nonsynchronizing fuel quantity by the nonsynchronizing fuel quantity determining means to the engine not synchronizing with the crank angle signal.

Fuel control device of an engine

Growing community of inventors

Tokyo, Japan

Koichi Yamane