Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Patent
1979-02-02
1980-09-30
Myhre, Charles J.
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
123506, 417251, 417462, 239124, 239 95, F02B 300, F02M 4100, F04B 2304
Patent
active
042249031
ABSTRACT:
A fuel system for a multi-cylinder engine comprises a plurality of injection nozzles mounted on an engine to direct fuel into respective combustion spaces of the engine. Each nozzle incorporates a resiliently loaded pressure actuated valve member which controls the flow of fuel through an outlet from a fuel inlet. A fuel pump is provided for supplying fuel to the inlets in turn. Pilot pumps incorporated in the nozzles respectively cause a small volume of fuel to be delivered through the respective outlets in advance of the main volume of fuel. Pilot inlets on the injection nozzles respectively receive liquid under pressure in turn to actuate the respective pilot pumps and each nozzle incorporates a non-return valve disposed to allow fuel which has leaked past the respective valve member to flow to the respective pilot inlet when the liuid pressure at the pilot inlet is sufficiently low the system including a pressure pump for supplying liquid under pressure to the pilot inlets in turn and means for connecting the pilot inlets to a drain during at least part of the time when liquid is not being delivered thereto whereby the fuel which has leaked past the valve members can flow by way of said non-return valves to the drain.
REFERENCES:
patent: 2739645 (1956-03-01), Voit
patent: 3391871 (1968-07-01), Fleischer
patent: 3394891 (1968-07-01), Voit
Lucas Industries Limited
Miller Carl Stuart
Myhre Charles J.
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