Fuel injection pump

Details Fuel injection pump Fuel injection pump

1986-04-30

1988-03-29

Miller, Carl Stuart

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123462, 123479, F02M 3900

Patent

active

047336404

ABSTRACT:
A fuel injection pump for internal combustion engines is described, which for controlling fuel quantity is provided with control unit that controls an electric final control element, which in turn actuates the regulating member that determines the fuel injection quantity per pump piston supply stroke. The supply of fuel to the pump work chamber is effected from a fuel supply chamber, which is kept at a controlled pressure by a fuel feed pump. To limit the maximum speed of the engine supplied by the fuel injection pump in the event of failure of the control unit, a valve is provided in the intake line of the fuel feed pump. Using this valve, the flow cross section of the intake line can be varied or closed. By means of the modification of the fuel pressure in the fuel supply chamber effected thereby, a control of the fuel injection quantity that is not dependent on the position of the quantity-determining member is attained.

REFERENCES:
patent: 4319550 (1982-03-01), Ishii
patent: 4391241 (1983-07-01), Doshita
patent: 4502439 (1985-03-01), Nagase
patent: 4565170 (1986-01-01), Grieshaber

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