Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1998-02-18
1999-08-24
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123458, F02M 3704
Patent
active
059412151
ABSTRACT:
In a fuel injection system for a multi-cylinder internal combustion engine with magnetic valve controlled direct injection fuel injectors of which each includes a housing having an injection nozzle with a nozzle needle biased into a closed position by a spring disposed in a spring chamber, and a magnetic valve controlled control piston having a valve structure at one end for controlling high pressure fuel admission to a fuel supply passage leading to the needle nozzle, the spring chamber is in communication with the fuel supply passage by a communication passage including a throttle structure permitting limited fuel flow to the spring chamber such that, upon failure of the injector resulting in a continuous pressurization of the fuel supply passage, the pressure in the spring chamber builds up to seat the nozzle needle thereby interrupting fuel ejection from the injector.
REFERENCES:
patent: 4684067 (1987-08-01), Cotter
patent: 5012786 (1991-05-01), Voss
patent: 5109822 (1992-05-01), Martin
patent: 5438968 (1995-08-01), Johnson
patent: 5711277 (1998-01-01), Fuseya
patent: 5711279 (1998-01-01), Green
patent: 5713326 (1998-02-01), Huber
Bach Klaus J.
Daimler-Benz AG
Miller Carl S.
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