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US 6,802,201 B2Granted
Method and device for monitoring a sensor
AssigneeRobert Bosch GmbH
InventorOtwin Landschoff
Life of this patent
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Abstract
A method and a device for monitoring a sensor, e.g., a sensor for measuring a pressure variable which characterizes the pressure of the air supplied to the internal combustion engine. A fault is detected if a change in an operating variable that characterizes the quantity of fuel to be injected results in no corresponding change in the output variable of the sensor.
Claims9
A method for monitoring a sensor, comprising:
- detecting a fault if a change in an operating variable representing a quantity of injected fuel does not result in any corresponding change in an output variable of the sensor;
- wherein:
- the sensor is a sensor for measuring a pressure variable representing a pressure of air supplied to an internal combustion engine.
A device for monitoring a sensor, comprising:
- an arrangement for detecting a fault if a change in an operating variable representing a quantity of fuel injected does not result in any corresponding change in an output variable of the sensor;
- wherein:
- the sensor is a sensor for measuring a pressure variable representing a pressure of air supplied to an internal combustion engine.
Dependencies are inferred from the claim text.