Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1981-06-23
1983-12-27
Lazarus, Ira S.
Internal-combustion engines
Charge forming device
Fuel injection system
123458, 123502, F02M 5100
Patent
active
044224249
ABSTRACT:
A fuel injection pump (100) including a plunger (2) and a piston (1) movably disposed in a pumping chamber (17), means for initiating (3, 5) fuel injection and means for terminating (13, 30, 29) fuel injection, the plunger periodically pressurizing fuel in a pressure chamber (44) and the piston (1) spaced from the plunger and allowing a metering chamber (16) to fill with a metered quantity of fuel to be injected to an engine. The means for initiating injection comprise a pilot valve (5) having a solenoid to selectively operate between either of two states and a spool valve (3) movable between first and second positions in response to the state of pilot valve (5), the first position filling the metering chamber with the metered quantity of fuel. The pilot valve (5) determines the fuel quantity to be delivered to the engine relative to a signal from an electronic controller. An accumulator (4) is pressurized during each cycle of the plunger to provide pressurized fuel during a metering phase. A variable orifice (15) adjusts the rate of flow during the time fuel is being metered to metering chamber (16).
REFERENCES:
patent: 2922581 (1960-01-01), Garday
patent: 3547092 (1970-12-01), Knight
patent: 3587547 (1971-06-01), Hussey et al.
patent: 3779225 (1973-12-01), Watson et al.
patent: 3835829 (1974-09-01), Links
patent: 3837324 (1974-09-01), Links
patent: 4106458 (1978-08-01), Kohler
patent: 4219154 (1980-08-01), Luscomb
patent: 4249497 (1981-02-01), Eheim et al.
patent: 4280464 (1981-07-01), Kanai et al.
Lacina Charles D.
Lazarus Ira S.
Moy Magdalen
The Bendix Corporation
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