Method and device for controlling an ABS antilock braking / ASR traction control system
AssigneeRobert Bosch GmbH
InventorsHelmut Pueschel, Guenther Schmidt, Manfred Gerdes
Life of this patent
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Abstract
A device and a method for controlling an ABS antilock braking/ASR traction control system include a return pump, at least one aspirator valve (ASV), and at least one switch-over valve (USV). The return pump, the switch-over valve and/or the aspirator valve are triggered at least in dependence upon one signal which represents the actuation of the brake pedal.
Claims9
A method for controlling at least one of an ABS antilock braking system and an ASR traction control system including at least one return pump, at least one aspirator valve, and at least one switch-over valve, comprising the steps of:
- generating a signal representing an actuation of a brake pedal;
- specifying as a function of the signal at least one of a pressure build-up state in which pressure in a wheel brake cylinder is built up, a pressure-reduction state in which pressure in a wheel brake cylinder is reduced, and a sustain-pressure state in which pressure in a wheel brake cylinder is sustained, wherein the pressure build-up state is specified when at least one of a positive change in the signal exists and a special operating state is recognized, the special operating state being recognized when at least one further plausibility condition is fulfilled, and at least one of a value of the signal is greater than a first threshold value and a change in the value of the signal is greater than a second threshold value;
- and
- triggering at least one of the return pump, the aspirator valve, and the switch-over valve as a function of the specified state.
A device for controlling at least one of an ABS antilock braking system and an ASR traction control system including at least one return pump, at least one aspirator valve, and at least one switch-over valve, comprising:
- means for generating a signal representing an actuation of a brake pedal;
- means for specifying as a function of the signal at least one of a pressure build-up state in which pressure in a wheel brake cylinder is built up, a pressure-reduction state in which pressure in a wheel brake cylinder is reduced, and a sustain-pressure state in which pressure in a wheel brake cylinder is sustained, wherein the pressure build-up state is specified when at least one of a positive change in the signal exists and a special operating state is recognized, the special operating state being recognized when at least one further plausibility condition is fulfilled and one of a value of the signal is greater than a first threshold value and a change in the value of the signal is greater than a second threshold value;
- and
- means for triggering at least one of the return pump, the aspirator valve, and the switch-over valve as a function of the specified state.
Dependencies are inferred from the claim text.