Method of and device for safeguarding operation of an internal c

Details Method of and device for safeguarding operation of an internal c Method of and device for safeguarding operation of an internal c

1986-04-25

1988-02-23

Miller, Carl Stuart

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

137567, 123179, 123514, F02M 3900

Patent

active

047263350

ABSTRACT:
A method of safeguarding operation of an internal combustion engine is based on the provision of two electrically controlled fuel supply pumps delivering fuel from a tank to a fuel metering device. During the start of the engine both fuel supplying pumps are activated. During a normal engine operation when rotary speed exceeds an iling value, a random fuel supplying pump is turned off. In a defect situation resulting from malfunction of the active pump both pumps are turned on to maintain fuel supply by the other pump. In an emergency situation when for example actual rotary speed exceeds a maximum value, both fuel supplying pumps are activated in reverse to suck fuel from the metering device and cause the standstill of the engine.

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patent: 4590904 (1986-05-01), Wannenwetsch

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