Safety system for internal combustion engines

Details Safety system for internal combustion engines Safety system for internal combustion engines

1989-01-23

1990-03-06

Kamen, Noah P.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123198DB, F02B 7700

Patent

active

049056450

ABSTRACT:
To monitor the functioning of a redundant safety fuel shut off valve in a diesel engine, the electric power supply for a controlling device for the fuel quantity adjustor of a fuel injection pipe is decoupled from the power supply for the control of the electromagnetic fuel shut off valve. A relay controlled by a driving switch of the engine has a contact whose opening is time delayed relative to the opening of the driving switch. The relay contact is connected for energizing the controlling device for the fuel quantity adjustor whereas the energization and deenergization of the fuel shut off valve is effected immediately via a decoupling member. When the driving switch is opened and the engine is running during the given time delay interval, an error signal is generated indicating a malfunction of the fuel shut off valve.

REFERENCES:
patent: 3841291 (1974-10-01), Ludewig et al.
patent: 4088110 (1978-05-01), Sperline
patent: 4515125 (1985-05-01), Buck et al.
patent: 4597369 (1986-07-01), Yasuhara

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