Traction control permit/prohibit determination apparatus
First Claim
1. A traction control permit/prohibit determination apparatus for use in a vehicle having a plurality of wheels including a drive wheel, said apparatus comprising:
- wheel speed detection means for detecting a speed of each wheel of the vehicle;
vehicle speed detecting means for detecting a vehicle speed based on the wheel speeds;
wheel spin detecting means for detecting a spinning of the drive wheel;
traction control means for applying a traction control operation, including applying a traction brake pressure to a brake system provided on the drive wheel, when said wheel spin detecting means detects spinning of the drive wheel;
speed range determination means for determining whether the vehicle speed is in a low speed range, an intermediate speed range, or a high speed range; and
prohibit means for prohibiting a traction control operation based on the vehicle speed, said prohibit means comprising means for setting said traction control means to an operation permit mode, in which a traction control operation is permitted, when the vehicle speed is in the low speed range, and setting said traction control means to an operation prohibited mode, in which a traction control operation is prohibited, when the vehicle speed is in the high speed range, said prohibit means further comprising means for holding said traction control means in the operation permit mode, when the vehicle speed moves from the low speed range to the intermediate speed range with said traction control means being operated to control the traction of the vehicle.
1 Assignment
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Accused Products
Abstract
A traction control permit/prohibit determination apparatus has a traction controller which applies a traction brake pressure to a brake system provided on the drive wheel when spinning of the drive wheel is detected. The traction controller is set to an operation permit mode when the vehicle speed is in the low speed range, and set to an operation prohibited mode when the vehicle speed is in the high speed range. Also, the traction controller is set to an operation permit mode when the pad temperature is below a first predetermined temperature, and to an operation prohibited mode when the pad temperature is above a second predetermined temperature.
17 Citations
20 Claims
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1. A traction control permit/prohibit determination apparatus for use in a vehicle having a plurality of wheels including a drive wheel, said apparatus comprising:
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wheel speed detection means for detecting a speed of each wheel of the vehicle; vehicle speed detecting means for detecting a vehicle speed based on the wheel speeds; wheel spin detecting means for detecting a spinning of the drive wheel; traction control means for applying a traction control operation, including applying a traction brake pressure to a brake system provided on the drive wheel, when said wheel spin detecting means detects spinning of the drive wheel; speed range determination means for determining whether the vehicle speed is in a low speed range, an intermediate speed range, or a high speed range; and prohibit means for prohibiting a traction control operation based on the vehicle speed, said prohibit means comprising means for setting said traction control means to an operation permit mode, in which a traction control operation is permitted, when the vehicle speed is in the low speed range, and setting said traction control means to an operation prohibited mode, in which a traction control operation is prohibited, when the vehicle speed is in the high speed range, said prohibit means further comprising means for holding said traction control means in the operation permit mode, when the vehicle speed moves from the low speed range to the intermediate speed range with said traction control means being operated to control the traction of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A traction control permit/prohibit determination apparatus for used in a vehicle having a plurality of wheels including a drive wheel, said apparatus comprising:
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wheel speed detection means for detecting a speed of each wheel of the vehicle; vehicle speed detecting means for detecting a vehicle speed based on the wheel speeds; wheel spin detecting means for detecting a spinning of the drive wheel; traction control means for applying a traction control operation, including applying a traction brake pressure to a brake system provided on the drive wheel, when said wheel spin detecting means detects spinning of the drive wheel; pad temperature detecting means for detecting a temperature of a brake pad; and prohibit means for prohibiting a traction control operation based on the temperature of the brake pad, said prohibit means comprising means for setting said traction control means to an operation permit mode, in which a traction control operation is permitted, when the pad temperature is below a first predetermined temperature, and setting said traction control means to an operation prohibited mode, in which a traction control operation is prohibited, when the pad temperature is above a second predetermined temperature, said pad temperature detecting means comprising counting means for counting up at least while the traction brake pressure is applied, and counting down at least while the traction control means is in the operation prohibited mode, or while the traction control means is in the operation permit mode but said traction control means is not operated. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A traction control permit/prohibit determination apparatus for use in a vehicle having a plurality of wheels, and operable in low speed, intermediate speed, and high speed ranges, said apparatus comprising:
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wheel speed detection means for detecting a speed of each wheel of the vehicle; vehicle speed detecting means for detecting a vehicle speed based on the detected wheel speeds; wheel spin detecting means for detecting a spinning of at least one of the wheels; traction control means for applying a traction control operation, including applying a traction brake pressure to a brake system provided on at least one of the wheels, when said wheel spin detecting means detects spinning of at least one of the wheels; first prohibit means for prohibiting a traction control operation by said traction control means based on the vehicle speed, said first prohibit means further comprising means for holding said traction control means in the operation permit mode, when the vehicle speed moves from the low speed range to the intermediate speed range with said traction control means being operated to control the traction of the vehicle; and second prohibit means for prohibiting a traction control operation of said traction control means based on a temperature of a brake pad of at least one of the wheels. - View Dependent Claims (15, 16, 17, 18)
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19. A traction control permit/prohibit determination apparatus for use in a vehicle having a plurality of wheels, said apparatus comprising:
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wheel speed detection means for detecting a speed of each wheel of the vehicle; vehicle speed detecting means for detecting a vehicle speed based on the detected wheel speeds; wheel spin detecting means for detecting a spinning of at least one of the wheels; traction control means for applying a traction control operation, including applying a traction brake pressure to a brake system provided on at least one of the wheels, when said wheel spin detecting means detects spinning of at least one of the wheels; first prohibit means for prohibiting a traction control operation by said traction control means based on the vehicle speed; and second prohibit means for prohibiting a traction control operation of said traction control means based on a temperature of a brake pad of at least one of the wheels, said second prohibit means comprising counting means for counting up at least while the traction brake pressure is applied, and counting down at least while the traction control means is in the operation prohibited mode, or while the traction control means is in the operation permit mode but said traction control means is not operated. - View Dependent Claims (20)
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Specification