Claims
- 1. A process for aiding a starting movement of a vehicle from a stopped position, comprising the steps of:
- determining a brake pressure value required to maintain said vehicle in said stopped position;
- applying said brake pressure value via a braking control input independent of a vehicle operator braking input;
- sensing an engine torque generated by an engine of the vehicle; and
- terminating said applying step when said engine torque exceeds a limit value determined as a function of said brake pressure value.
- 2. A process according to claim 1, wherein the brake pressure is applied only when predetermined vehicle operating conditions are met.
- 3. A process according to claim 2, wherein said operating conditions consist of at least one of a velocity of the vehicle, a disengagement signal of a clutch of the vehicle, an operating signal of said engine, and an activation signal for said process.
- 4. A process according to claim 1, wherein in said applying step, said brake pressure is gradually built up, at least as a function of said vehicle velocity and/or of the time.
- 5. A process according to claim 1, wherein said brake pressure value is determined as a function of a sensed brake pressure at the moment at which the velocity has just reached zero.
- 6. A process according to claim 5, wherein said brake pressure value is determined as a function an angle of tilt of the vehicle.
- 7. A process according to claim 1, wherein said brake pressure value is determined as a function of an angle of tilt of the vehicle.
- 8. A process according to claim 1, wherein said brake pressure value is determined as a function of vehicle-specific parameters.
- 9. A process according to claim 1, wherein in said terminating step the brake pressure is reduced corresponding to a predetermined course.
- 10. A process according to claim 1, wherein said applying step is conducted when the vehicle is parked with a parking brake applied and the engine or ignition is switched on.
- 11. A process according to claim 1, further comprising the step of displaying a visual signal to said vehicle operator when said process is activated.
- 12. A process for aiding a starting movement of a vehicle from a stopped position, comprising the steps of:
- determining a brake pressure value required to maintain said vehicle in said stopped position;
- applying said brake pressure value via a braking control input independent of a vehicle operator braking input;
- sensing an engine torque generated by an engine of the vehicle; and
- terminating said applying step when said engine torque exceeds a limit value,
- wherein said brake pressure value is controlled to compensate for a change in temperature of brake disks of the vehicle.
- 13. A process according to claim 12, wherein in said determining step said brake pressure value is adjusted to compensate for a potential tension force loss in the event of a brake cooling.
- 14. A process for aiding a starting movement of a vehicle from a stopped position, comprising the steps of:
- sensing a torque generated by an engine of the vehicle; and
- sensing a velocity of the vehicle; and when said velocity is zero, further comprising the steps of:
- determining a brake pressure value required to maintain said velocity of zero;
- applying said brake pressure value via a braking control input independent of a vehicle operator braking input; and
- terminating said applying step when said engine torque exceeds a limit value,
- wherein in said applying step, said brake pressure value is applied via a secondary brake circuit which is separate from a primary brake circuit controlled by said vehicle operator braking input, said secondary brake circuit being controllable by said braking control input independent of said vehicle operator braking input, said secondary brake circuit being a conventional anti-lock brake circuit.
- 15. A system for aiding a starting movement of a vehicle from a stopped position, comprising:
- a control unit operably connected to a brake system of the vehicle;
- a velocity sensor which senses a velocity of the vehicle;
- a torque sensor which senses a torque generated by an engine of the vehicle; and
- a brake pressure sensor which senses a brake pressure in said brake system,
- wherein when said velocity sensor senses a velocity of zero, said control unit (a) determines a brake pressure value required to maintain said vehicle at said velocity of zero, (b) controls said brake system to apply said brake pressure value via a braking control input independent of a vehicle operator braking input, and (c) terminates application of said brake pressure value when said engine torque exceeds a limit value,
- wherein said control unit applies said brake pressure value via a secondary brake circuit which is separate from a primary brake circuit controlled by said vehicle operator braking input, said secondary brake circuit being controllable by said braking control input independent of said vehicle operator braking input, said secondary brake circuit being a conventional anti-lock brake circuit.
- 16. A process for aiding a starting movement of a vehicle from a stopped position, comprising the steps of:
- determining a brake pressure value required to maintain said vehicle in said stopped position;
- applying said brake pressure value via a braking control input independent of a vehicle operator braking input;
- sensing an engine torque generated by an engine of the vehicle; and
- terminating said applying step when said engine torque exceeds a limit value,
- wherein in said applying step, said brake pressure value is applied via a secondary brake circuit which is separate from a primary brake circuit controlled by said vehicle operator braking input, said secondary brake circuit being controllable by said braking control input independent of said vehicle operator braking input, said secondary brake circuit being a conventional anti-lock brake circuit.
Priority Claims (1)
Number |
Date |
Country |
Kind |
196 30 870 |
Jul 1996 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
This application is related to U.S. Pat. application Ser. No. 08/903,744, of common inventorship and common ownership.
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