Preheating system for a diesel engine

Details Preheating system for a diesel engine Preheating system for a diesel engine

1979-07-23

1982-03-09

Myhre, Charles J.

Internal-combustion engines

Starting device

For airplane

123179H, F02P 1902

Patent

active

043183743

ABSTRACT:
A preheating system for a Diesel engine of a type including a preheating plug energized through a glow relay, and a charging switch for deenergizing the glow relay when the charging switch detects engine starting, the system comprises a glow switch adapted to be closed in response to insertion of an engine key into an engine key switch, and a timer switch for exciting the glow relay for pre-determined period of time after closing of the glow switch.
In accordance with a second embodiment, the preheating system further comprises a second glow switch, a glow plug preheating circuit established from the second glow switch through contacts of a self-holding relay to the glow plug, and circuitry for sensing overheating of the glow plug and in response interrupting the glow plug preheating circuit.

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: 4177785 (1979-12-01), Sundeen
patent: 4221205 (1980-09-01), Koehler

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