Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-01-25
1999-09-21
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123299, 123496, F02M 3704
Patent
active
059540290
ABSTRACT:
A fuel injector for periodically injecting fuel pulses of a variable quantity on a cycle to cycle basis as a function of the pressure of fuel supplied to the injector from a source of fuel and at a constant time during each cycle is set forth including an injector body containing a central bore and an injection orifice at the lower end of the body and a reciprocating plunger assembly including an upper plunger section and a lower plunger section serially mounted within the central bore to define a variable volume metering chamber located between the lower plunger section and the lower end of the injector body containing the injection orifice. The variable volume metering chamber communicates during a portion of each injector cycle with the source of fuel. A variable volume timing chamber is located between the upper and lower plunger sections, and the timing chamber communicates for a portion of each injector cycle with the source of timing fluid and os isolated from the source of timing fluid at a constant time during each cycle.
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Perr Julius P.
Peters Lester L.
Yen Bai Mao
Cummins Engine Company, Inc.
Leedom Jr. Charles M.
Miller Carl S.
Studebaker Donald R.
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