초록 ▼

A starting system of an engine according to the present invention comprises an electromagnetically-operated fuel resupply pump for supplying auxiliary fuel to an intake passage of the engine, and various detectors for detecting the operating conditions of the engine, e.g., engine speed, temperature

A starting system of an engine according to the present invention comprises an electromagnetically-operated fuel resupply pump for supplying auxiliary fuel to an intake passage of the engine, and various detectors for detecting the operating conditions of the engine, e.g., engine speed, temperature of engine cooling water, drive of a starting motor, etc., and a control circuit for controlling the drive of the fuel resupply pump in accordance with signals from the detectors. The control circuit is partially formed of a microcomputer, which controls the pump so that a pulse voltage is applied to a solenoid of the pump for a longer time when the engine is in a cranking state than when the engine is in any other operating state.

대표청구항 ▼

A starting system of an internal combustion engine adapted to be started by a starting motor, comprising: a carburetor housing having an air intake passage; a drive means for generating electric pulses of varying voltages, widths and periods, wherein the voltage of the pulses is relatively lower whe

A starting system of an internal combustion engine adapted to be started by a starting motor, comprising: a carburetor housing having an air intake passage; a drive means for generating electric pulses of varying voltages, widths and periods, wherein the voltage of the pulses is relatively lower when said engine is in a cranking state; an electromagnetically operated fuel resupply pump that is electrically connected to and powered by the electric pulses generated by the drive means for feeding auxiliary fuel to the intake passage of the carburetor housing, wherein the output of the pump is dependent upon the pulse voltage, the pulse width and the pulse period, and control means for controlling the drive of the fuel resupply pump by the drive means, said control means including a period decision circuit for determining the period of the pulse voltage applied to the pump, and a pulse width correction circuit for lengthening the impression time for the pulse voltage applied to the pump when the engine is in a cranking state so that the fuel output of the fuel resupply pump is sufficient to start the engine despite the lower pulse voltage associated with the cranking state of the engine.