Measuring and testing – With fluid pressure – Leakage
Patent
1995-03-15
1996-07-02
Chilcot, Richard
Measuring and testing
With fluid pressure
Leakage
73 497, 73115, 731172, G01M 1500
Patent
active
055311008
ABSTRACT:
The invention is directed to a method of checking the tightness of exhaust valves of an internal combustion engine with the aid of an apparatus. The apparatus includes a device for forming a value LU for the uneven running of the engine and a device for metering air into a region disposed downstream of the exhaust valves as viewed in the flow direction of the exhaust gas. In the method, a first value LU1 is formed for the uneven running without air being supplied in the above-mentioned region and a second value LU2 is formed for uneven running with air being supplied in the above-mentioned region. An exhaust valve is deemed to leak when the first and the second values for the uneven running differ by more than a predetermined amount.
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Mezger Manfred
Ries-Muller Klaus
Chilcot Richard
McCall Eric S.
Ottesen Walter
Robert & Bosch GmbH
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