Device and method for monitoring the intake manifold...

Details Device and method for monitoring the intake manifold... Device and method for monitoring the intake manifold...

2008-03-19

2009-12-22

Caputo, Lisa M (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Monitoring intake air system

C073S114790

Reexamination Certificate

active

07634940

ABSTRACT:
A method and a device for monitoring the intake manifold pressure of an internal combustion engine in which a measured signal for the intake manifold pressure is compared with a reference signal for the intake manifold pressure. For a deviation of the measured signal for the intake manifold pressure from the reference signal for the intake manifold pressure, a tolerance range is predefined for error-free operation of the intake and/or exhaust valves of at least one cylinder of the internal combustion engine. A check is made whether the measured signal for the intake manifold pressure deviates from the reference signal for the intake manifold pressure by more than a predefined tolerance range. In this case an erroneous operation of the intake and/or exhaust valves is detected; otherwise an error-free operation of the intake and/or exhaust valves is detected.

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