ANTI ROLL BACK CONTROL SYSTEM AND METHOD FOR HYBRID VEHICLE
First Claim
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1. An anti roll back (ARB) control system for a hybrid vehicle, the system comprising:
- a hold switch that maintains, when turned on, the braking state of the vehicle even when the brake of the vehicle is released;
an inclination sensor that senses the inclination of a road surface on which the vehicle stops;
an ARB unit that maintains brake hydraulic pressure, until a clutch of the vehicle is engaged after the brake is released; and
a control unit that receives signals from the hold switch and the inclination sensor, and controls the ARB unit according to the received signals.
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Abstract
An anti roll back (ARB) control system and an ARB control method are provided, which can prevent a hybrid vehicle, of which the clutch disposed between the driving wheel and the engine is open when the vehicle stops, from being unexpectedly moving downward when the vehicle is restarted on a slope.
9 Citations
12 Claims
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1. An anti roll back (ARB) control system for a hybrid vehicle, the system comprising:
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a hold switch that maintains, when turned on, the braking state of the vehicle even when the brake of the vehicle is released; an inclination sensor that senses the inclination of a road surface on which the vehicle stops; an ARB unit that maintains brake hydraulic pressure, until a clutch of the vehicle is engaged after the brake is released; and a control unit that receives signals from the hold switch and the inclination sensor, and controls the ARB unit according to the received signals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling an anti roll back (ARB) unit of a hybrid vehicle, the method comprising:
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(a) determining whether the ARB unit is in OFF-state; (b) determining whether a hold switch is in ON-state if it is determined in step (a) that the ARB unit is not in OFF-state in step; (c) determining whether an ON-signal is transmitted from the accelerator position sensor if it is determined in step (b) that the hold switch is in ON-state; and (d) maintaining the ARB unit in ON-state if it is determined in step (c) that if the ON-signal is not transmitted from the accelerator position sensor. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification