초록 ▼

A starter for an engine equipped with a motor generator achieves lower cost and reduced sizes and capacities of circuit elements by reducing the assist load on the motor generator: it is provided with a motor generator (2) and a starting motor (10) connected to an engine (1); a startup state determi

A starter for an engine equipped with a motor generator achieves lower cost and reduced sizes and capacities of circuit elements by reducing the assist load on the motor generator: it is provided with a motor generator (2) and a starting motor (10) connected to an engine (1); a startup state determining circuit (20) which determines the startup state from operating condition and selectively issues ON signals M1 and M2 to the motor generator and the starting motor; a key switch (6) which generates a start signal (Qe) at the time of starting the engine; and a temperature sensor 12 which generates a temperature signal (Te) corresponding to the temperature of the engine. The startup state determining circuit actuates only the motor generator as a motor in a startup state wherein the temperature signal indicates not less than a predetermined temperature corresponding to the warm-up state of the engine, while it actuates both the starting motor and the motor generator in a startup state wherein the temperature signal indicates a temperature below the predetermined temperature. And the startup state determining circuit actuates the starting motor first, then actuates the motor generator after a delay time corresponding to a rush current period of the starting motor has elapsed in the second startup state.

대표청구항 ▼

[ What is claimed is:] [1.] A starter for an engine equipped with a motor generator, comprising:a motor generator directly connected to an engine;a battery connected to said motor generator via an inverter;a motor generator control circuit for controlling said motor generator via said inverter;a sta

[ What is claimed is:] [1.] A starter for an engine equipped with a motor generator, comprising:a motor generator directly connected to an engine;a battery connected to said motor generator via an inverter;a motor generator control circuit for controlling said motor generator via said inverter;a starting motor composed of a DC motor connected to said engine at the time of startup;an ON/OFF switch for selectively switching the feed of power from said battery to said starting motor;various sensors for detecting the operating condition of said engine; anda startup state determining circuit which determines the startup state of said engine according to the operating condition of said engine and selectively issues ON signals to said ON/OFF switch and said motor generator control circuit;wherein said various sensors include a key switch for generating a startup signal at the time of starting up said engine and a temperature sensor for generating a temperature signal corresponding to the temperature of said engine;said startup state determining circuit issues the ON signal only to said motor generator control circuit to actuate said motor generator as a motor in a first startup state wherein said temperature signal indicates not less than a predetermined temperature which corresponds to the warm-up state of said engine, while it issues the ON signal to both said ON/OFF switch and said motor generator control circuit to actuate both said starting motor and said motor generator in a second startup state wherein said temperature signal indicates a temperature below said predetermined temperature; andsaid startup state determining circuit actuates said starting motor first, then actuates said motor generator after a delay time corresponding to a rush current period of said starting motor has elapsed in said second startup state.