Method and device for detecting the idle stroke of injectors

Details Method and device for detecting the idle stroke of injectors Method and device for detecting the idle stroke of injectors

2007-03-14

2008-08-05

McCall, Eric S (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Compression

Reexamination Certificate

active

07406861

ABSTRACT:
In a method and device for characterising the return stroke of injectors, in particular piezo-injectors of an internal combustion engine provided with a common rail system, when the internal combustion engine is switched off, a constant pressure is dropped in the rail, thereby making it possible to measure the rail pressure and to adjust the injectors by corresponding power. The actuating power is increased until a discontinuity in a temporal progression of rail pressure occurs. The actuating energy applied for the state and a pressure available in the make it possible to measure the return stroke of corresponding injector.

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International Search Report and Written Opinion for International Application No. PCT/EP2005/053554 (11 pages), Oct. 28, 2005.

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