Method for detecting a sticking tank vent valve
First Claim
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1. A method for detecting a sticking tank vent valve in a motor vehicle, a temperature sensor being situated in a tank vent line between the tank vent valve and an inlet point into an intake manifold or into a turbocharger, the method comprising:
- detecting a sticking of the tank vent valve when the absolute value of a correlation of a computed tank ventilation mass flow and of a signal value of the temperature sensor violates a predefinable threshold value.
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Abstract
A method for detecting a sticking tank vent valve in a motor vehicle, a temperature sensor being situated in a tank vent line between the tank vent valve and an inlet point into an intake manifold or into a turbocharger and sticking of the tank vent valve being detected when the absolute value of a correlation of a calculated tank ventilation mass flow and of a signal value of the temperature sensor violates a predefinable threshold value.
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Citations
8 Claims
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1. A method for detecting a sticking tank vent valve in a motor vehicle, a temperature sensor being situated in a tank vent line between the tank vent valve and an inlet point into an intake manifold or into a turbocharger, the method comprising:
detecting a sticking of the tank vent valve when the absolute value of a correlation of a computed tank ventilation mass flow and of a signal value of the temperature sensor violates a predefinable threshold value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A non-transitory machine-readable memory medium on which is stored a computer program for detecting a sticking tank vent valve in a motor vehicle, a temperature sensor being situated in a tank vent line between the tank vent valve and an inlet point into an intake manifold or into a turbocharger, the computer program, when executed by a control unit, causing the control unit to perform:
detecting a sticking of the tank vent valve when the absolute value of a correlation of a computed tank ventilation mass flow and of a signal value of the temperature sensor violates a predefinable threshold value.
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8. An electronic control unit for detecting a sticking tank vent valve in a motor vehicle, a temperature sensor being situated in a tank vent line between the tank vent valve and an inlet point into an intake manifold or into a turbocharger, the control unit configured to:
detecting a sticking of the tank vent valve when the absolute value of a correlation of a computed tank ventilation mass flow and of a signal value of the temperature sensor violates a predefinable threshold value.
Specification