Pressure/stroke controlled injector with hydraulic multiplier
AssigneeRobert Bosch GmbH
InventorFriedrich Boecking
Life of this patent
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Abstract
An injector for injecting fuel in a combustion chamber of an internal combustion engine has an injector housing, 2/2-way double valves received in the injector housing and coupled with one another for joint vertical movements, a hydraulic multiplier associated with the 2/2-way-control valves, a nozzle chamber which surrounds a nozzle needle and supplied with high pressure fuel by the hydraulic multiplier, the 2/2-way control valves in the housing being turned relative to one another and have valve bodies and guiding elements which surround the valve bodies.
Claims9
An injector for injecting fuel in a combustion chamber of an internal combustion engine, comprising an injector housing;
- 2/2-way double valves received in said injector housing and coupled with one another for joint vertical movements;
- a hydraulic multiplier preceding said 2/2-way-control valves;
- a nozzle chamber which surrounds a nozzle needle and supplied with high pressure fuel by said hydraulic multiplier, said 2/2-way control valves in said housing being turned relative to one another and having valve bodies and guiding elements which surround said valve bodies, said valve bodies having sealing surfaces oriented opposite to each other.
An injector for injecting fuel in a combustion chamber of an internal combustion engine, comprising an injector housing;
- 2/2-way double valves received in said injector housing and coupled with one another by a bridge for joint vertical movements;
- a hydraulic multiplier preceding said 2/2-way-control valves;
- a nozzle chamber which surrounds a nozzle needle and supplied with high pressure fuel by said hydraulic multiplier, said 2/2-way control valves in said housing being turned relative to one another and having valve bodies and guiding elements which surround said valve bodies, said valve bodies having sealing surfaces oriented opposite to each other.
Dependencies are inferred from the claim text.