Method and device for detecting malfunctions of actuators in...

Details Method and device for detecting malfunctions of actuators in... Method and device for detecting malfunctions of actuators in...

2008-08-12

2011-12-06

McCall, Eric S (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Exhaust system

C073S114360, C073S114390

Reexamination Certificate

active

08069711

ABSTRACT:
A method and a device for detecting faulty functioning of actuators in the air system on internal combustion engines, an actuator being operated using at least two control states, one after the other, at least one sensor, whose output signal is a function of the excursion state of the actuator, reading out the output signal of this sensor being undertaken, and an assessment of the function of the controlled actuator being undertaken from the response of this output signal to the change of the control of the actuator, during the control of the actuator, at least the control of those other actuators included in the air system being kept constant as well as additional control signals for operating the internal combustion engine, which have an influence on the output signal of the sensor.

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