Method for checking a vehicle braking system
AssigneeZF Active Safety GmbH
InventorsChristoph PROBST, Daniel SUTEDJA, Simon WEIDENFELLER
Life of this patent
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Abstract
In a method for checking a vehicle's braking system for leaks, a braking request is detected when the vehicle is stationary. The braking request is modified by means of a predetermined pressure curve which includes a pressure above a detection threshold value, and an electrofluidic pressure-generating unit is controlled with the predetermined pressure curve. Pressure values associated with a first and/or second brake circuit are detected and compared with the predetermined pressure curve, wherein deviation values are determined. Fault indications are detected if at least one deviation value exceeds a predetermined threshold value.
Claims10
Method for checking a vehicle's braking system for leaks, wherein the braking system has a first and a second brake circuit, each with at least one pressure port, wherein each of the pressure ports can be coupled to an associated brake actuator of a wheel of the vehicle, as well as an electrofluidic pressure-generating unit that is in fluid communication with the first and second brake circuits, with the steps of:
- detecting a braking request when the vehicle is stationary,
- modifying the braking request by means of a predetermined pressure curve which includes a pressure above a detection threshold value, and controlling the electrofluidic pressure-generating unit with the predetermined pressure curve,
- detecting pressure values associated with the first and/or second brake circuit,
- comparing the pressure values with the predetermined pressure curve and determining deviation values, and
- detecting a fault indication if at least one deviation value exceeds a predetermined threshold value.
Dependencies are inferred from the claim text.