Method for assessing the phase angle of a camshaft of an internal combustion engine, in particular for a motor vehicle
AssigneeMannesmann VDO AG
InventorsStefan Mühlberger, Ralf Koch, Christoph Steimel
Life of this patent
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Abstract
A method for check the phase adjustment of a camshaft, in which the present phase angle of a variable phase camshaft can be detected reliably. A first value which corresponds to the actual noise level of the internal combustion engine is determined during a predetermined evaluation window and is compared with a second value, which corresponds to the actual noise level after phase adjustment of the camshaft, with the operation of the phase adjustment of the camshaft being assessed as a function of this comparison.
Claims10
A method for testing phase adjustment of a camshaft in an internal combustion engine, in particular for a motor vehicle, comprising the steps of:
- determining a first value (M1) corresponding to an actual noise level of the internal combustion engine (1) during a predetermined evaluation window (I);
- comparing said first value with a second value (M2) corresponding to the actual noise level after the phase adjustment of the camshaft (12);
- and
- assessing the operation of the phase adjustment of the camshaft (12) as a function of said comparison.
Dependencies are inferred from the claim text.