Electronic starting motor control having pinion block protection

Details Electronic starting motor control having pinion block protection Electronic starting motor control having pinion block protection

1988-12-12

1990-04-10

Paschall, M. H.

Prime-mover dynamo plants

Electric control

Electric-starting motor

F02N 1108

Patent

active

049163272

ABSTRACT:
An electronic control for an electric engine starter that includes a cranking motor and a solenoid for moving a pinion into mesh with an engine ring gear and for operating solenoid contacts. If end tooth abutment occurs between the pinion and ring gear to block meshing of the pinion with the ring gear the solenoid contacts do not close and this is sensed by an electronic circuit connected to the solenoid contacts and to a start switch. When pinion block occurs the electronic circuit develops a signal which causes the solenoid to be deenergized and to be maintained deenergized until the start switch is opened. The electronic circuit includes means for preventing solenoid contact chatter by locking out energization of the solenoid coil if the solenoid contacts open after being closed due to, for example, low voltage.

REFERENCES:
patent: 2614230 (1952-10-01), Schneider
patent: 2939964 (1960-06-01), Schneider et al.
patent: 3167659 (1965-01-01), Cromwell
patent: 3223863 (1965-12-01), Preece et al.
patent: 3407306 (1968-10-01), Huntzinger
patent: 3670173 (1972-06-01), Pfluger
patent: 3866960 (1975-02-01), Chohan
patent: 4731543 (1988-03-01), Buetemeister et al.
Research Disclosure No. 27844, Electric Engine Starter Control System, Jun., 1987.

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