Electronic overspeed switch

Details Electronic overspeed switch Electronic overspeed switch

1984-05-01

1985-04-16

Nelli, Raymond A.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123351, 123352, F02P 1100, F02B 7708

Patent

active

045108994

ABSTRACT:
An electrical speed control system for selectively connecting an accessory to a vehicle engine having a conventional alternator driven thereby, utilizes the voltage output of the alternator stator to determine the rotational speed of the engine, and permits the accessory to be connected to the engine when the shaft speed is at or below a maximum safe engagement speed, and disconnects the accessory when the speed is above a maximum safe speed for the accessory. The speed control system further prevents reengagement of the accessory after reaching and falling below the high-speed disengage point until the rotational speed of the engine has fallen below the maximum safe engagement speed level.

REFERENCES:
patent: 3767972 (1973-10-01), Noddings et al.
patent: 3828742 (1974-08-01), Weis
patent: 3866584 (1975-02-01), Bigalke et al.
patent: 3878915 (1975-04-01), Purland et al.
patent: 3893108 (1975-07-01), McBride, Jr. et al.
patent: 3993038 (1976-11-01), Alt et al.
patent: 4211193 (1980-07-01), Cox et al.

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