Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1989-06-28
1991-05-07
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Fuel injection system
123506, 123450, 417462, 137102, F02M 3900
Patent
active
050127853
ABSTRACT:
Fuel delivery valving operatively mounted in an axially extending center bore of a high pressure pump rotor. The valve axially shifts between an open position in which a charge of fuel generated by the pump is transmitted as a pressure wave to a fuel injector nozzle and a closed position in which the pump charging chamber is sealed from the injection line and the injection line is vented to low pressure so that secondary pressure waves reflecting from the injector nozzle will be routed to the low pressure line for dissipation therein rather than rebounding from the delivery valve. This improves engine operation efficiency and eliminates seocndary injection of fuel by the injector nozzle and high hydrocarbon and smoke emissions. One embodiment has a fuel delivery valve operatively mounted in each discharge fitting of a hydraulic head assembly of the fuel injection pump.
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"DM" Pump for Rugged Applications, Brochure on Roosa Master Pump from Stanadyne, SAE 790,899, Hess et al., particularly FIGS. 1, 18, and 20.
Long David L.
Mitchell Mark A.
Sczomak David P.
Barr Jr. Karl F.
General Motors Corporation
Miller Carl Stuart
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