Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1997-08-06
1998-09-15
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123470, F02M 4100
Patent
active
058064940
ABSTRACT:
A hydraulically actuated fuel injection system includes a plurality of hydraulically actuated fuel injectors mounted into an actuation fluid rail. The injector and rail combination are mounted to an engine. The rail is connected to a source of relatively high pressure actuation fluid. The injectors are in fluid communication with the rail by an inner cavity in the rail and an actuation fluid inlet in the injector. The rail is a piece of metallic tubing with a plurality of bores therethrough for insertion of the injectors. The injectors are sealed from leakage of actuation fluid between the bores and the injectors with a pair of O-rings. A source of relatively low pressure fuel is provided separate from the actuation fluid rail to supply fuel to the injector through a fuel supply inlet. A bracket is used to fasten the injectors to the rail with a fastener. The same fastener may be used to mount the rail to the engine.
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Caterpillar Inc.
Moulis Thomas N.
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