Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-03-10
1995-08-15
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123456, 123500, 123510, F02M 5702, F02M 5936
Patent
active
054410274
ABSTRACT:
A metering system is provided which controls the amount of fuel supplied to the combustion chambers of a multi-cylinder internal combustion engine comprising a fuel pump for supplying fuel at low pressure to a first and a second group of unit fuel injectors, a first solenoid-operated fuel control valve controlling the flow of fuel to the first set of injectors and a second solenoid-operated fuel control valve controlling the flow of fuel to the second set of injectors. The system may also include first and second solenoid-operated timing fluid control valves associated with the first and the second group of injectors, respectively. The injectors are capable of being in the fuel receiving mode, establishing a metering period, and the timing receiving mode, establishing a timing period, at the same time to increase the amount of time available for metering both timing fluid and fuel. By grouping the various injectors based on the order of injection so that the injectors from each group are placed in the injection mode in spaced periods throughout each cycle of the engine, e.g. injectors from other groups injecting in the period of time between each injection mode, the system can be designed to permit longer metering and timing periods.
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Buchanon David L.
Perr Julius P.
Peters Lester L.
Tarr Yul J.
Cummins Engine Company, Inc.
Moulis Thomas N.
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