Preheating system for diesel engines

Details Preheating system for diesel engines Preheating system for diesel engines

1982-06-28

1983-09-20

Lall, Parshotam S.

Internal-combustion engines

Starting device

For airplane

123145A, F02N 1700

Patent

active

044049323

ABSTRACT:
A preheating system for a diesel engine using an electric heater for heating suction air introduced into a combustion chamber of the diesel engine. A normally-open first relay is disposed in a circuit connecting the heater with a battery. A coil of the first relay is connected with an accessory terminal of an engine key switch through a pushbutton switch. A timer and a normally-open second relay are disposed in another circuit connecting the coil of the first relay with accessory terminal of the engine key switch. Once the pushbutton switch is pressed, the second relay is closed, connecting the coil of the first relay with the accessory terminal through the timer, thereby electrically connecting the heater with the battery. The heater continues to be heated until the timer deenergizes the first relay.

REFERENCES:
patent: 3675033 (1972-07-01), Richard et al.
patent: 4075998 (1978-02-01), Krauss et al.
patent: 4106465 (1978-08-01), Bernhardt et al.
patent: 4221205 (1980-09-01), Koehler
patent: 4261309 (1981-04-01), Biondi
patent: 4285307 (1981-08-01), Steinke
patent: 4318374 (1982-03-01), Yasuhara
patent: 4331109 (1982-05-01), Arnault

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