Vehicular motion controlling system
First Claim
Patent Images
1. A vehicular motion controlling system comprising:
- a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and
a driving wheel control device which operates concurrently with said drive wheel control device for reducing the wheel speeds of driven wheels by a brake actuator.
1 Assignment
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Accused Products
Abstract
In the present invention, when the wheel speeds of drive wheels are reduced by an engine brake, there are executed drive wheel control for adjusting the braking forces applied to the drive wheels by the engine brake, and driven wheel control for reducing the wheel speeds of driven wheels by an brake actuator. Drive wheel control raises lateral resistant force of the drive wheels by increasing an engine output torque, and driven wheel control brakes the driven wheels by the brake actuator such as a hydraulic brake. As a result, sufficient deceleration of a vehicle can be obtained while retaining the stability of the vehicle.
68 Citations
45 Claims
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1. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driving wheel control device which operates concurrently with said drive wheel control device for reducing the wheel speeds of driven wheels by a brake actuator.
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2. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein said drive wheel control device reduces the braking force due to said engine brake by increasing an engine output torque.
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3. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein said drive wheel control device and said driven wheel control device adjust distribution of brake force provided to said drive wheel and said driven wheel in response to slip states of several wheels and/or a road surface state. - View Dependent Claims (4)
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5. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein braking force corresponding to said engine brake is distributed between braking forces of said drive wheels and braking force of said driven wheels so that the vehicle can stably travel.
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6. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein braking force corresponding to said engine brake is distributed between braking forces of said drive wheels and braking force of said driven wheels so that deceleration caused by said engine brake can be obtained.
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7. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein said engine brake is operated when a driver releases an accelerator pedal.
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8. A vehicular motion controlling system comprising:
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a drive wheel control device for adjusting a braking force provided to drive wheels by an engine brake when the wheel speeds of said drive wheels are reduced by said engine brake; and a driven wheel control device for reducing the wheel speeds of driven wheels by a brake actuator;
wherein said engine brake is operated when an automatic control device automatically adjusts braking force and/or drive force of the vehicle.
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9. A vehicular motion controlling system utilized for a vehicle including at least rear side wheels serving as drive wheels, comprising:
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engine brake detecting means for detecting that engine brake is applied to said drive wheels in response to a reduction in drive force provided from an engine to said drive wheel; and braking force controlling means for applying braking force to front side wheels by a brake actuator in response to load movement in a vehicle caused by said engine brake when said engine brake is applied to said drive wheels.
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10. A vehicular motion controlling system utilized for a vehicle having rear side wheels serving as drive wheels and front side wheels serving as driven wheels, comprising:
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engine brake detecting means for detecting that engine brake is applied to said drive wheels in response to a reduction in drive force provided from an engine to said drive wheels; and braking force controlling means for applying braking force to said driven wheels by a brake actuator so that said braking force applied to said driven wheels is equal to or more than braking force applied to said drive wheels due to said engine brake when said engine brake is applied to said drive wheels.
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11. A vehicular motion controlling system utilized for a vehicle having rear side wheels serving as drive wheels and front side wheels serving as driven wheels, comprising:
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engine brake detecting means for detecting that an engine brake is applied to said drive wheels in response to a reduction in drive force provided from an engine to said drive wheels; and braking force controlling means for applying braking force to said driven wheels by a brake actuator so that said braking force applied to said driven wheels is equal to or more than braking force applied to said drive wheels when said engine brake is applied to said drive wheels.
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12. A vehicular motion controlling system utilized for a vehicle including at least rear side wheels serving as drive wheels, comprising:
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wheel braking force generating means mounted on each of the wheels of the vehicle for generating braking force according to a given brake fluid pressure in each wheel; brake fluid pressure generating means for generating brake fluid pressure to be fed to said wheel braking force generating means; driving force generating a means for generating driving force for driving at least rear side wheels; detection means for detecting a state in which an engine brake is effective; and control means for activating said brake fluid pressure generating means to apply brake fluid pressure to said wheel braking force generating means mounted on front side wheels so that braking force is generated in said front side wheels, when said state in which said engine brake is effective is detected by said detection means. - View Dependent Claims (13, 14, 15)
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16. A vehicular motion controlling system comprising:
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an engine for generating a driving force to be transmitted to drive wheels of a vehicle; driving force adjusting means for adjusting said driving force generated by said engine; adjusting state detecting means for detecting an operating state of said drive force adjusting means; condition determining means for determining whether or not condition for effecting an engine brake is satisfied, on the basis of said operating state detected by said adjusting state detecting means; and driving force controlling means for driving said driving force adjusting means to increase said driving force when it is determined by said condition determining means that said condition for effecting said engine brake is satisfied. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A vehicular motion controlling system comprising:
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braking force generating means for generating wheel braking force to each of front-left, front-right, rear-left and rear-right wheels of a vehicle in response to a given brake fluid pressure; a brake fluid pressure generating source for generating brake fluid pressure to be supplied to said braking force generating means; a driving force generating source for applying a driving force to drive wheels which are either said front-left and front-right wheels or said rear-left and rear-right wheels; driving force increasing means for increasing said driving force to be applied to said drive wheels by said driving force generating means, in accordance with a turning state of the vehicle; and control means for comparing a real turning state of the vehicle and a target turning state obtained from a steering operation by a driver, and applying said brake fluid pressure from said brake fluid pressure generating source to said braking force generating means corresponding to one of left and right driven wheels so that said real turning state approaches said target turning state. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A vehicular motion controlling system comprising:
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turning state detecting means for detecting a turning state of a vehicle; and driving force increasing means for increasing driving force to be transmitted from a power system of a vehicle to drive wheels thereof with a predetermined value, when said turning state detected by said turning state detecting means exceeds a predetermined degree. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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41. A vehicular motion control method for a vehicle having an engine, drive wheels coupled with the engine, driven wheels and a braking device, said method comprising the steps of:
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detecting a reduction in a rotation speed of said drive wheels; increasing an output torque of said engine in response to the detection of speed reduction thereby to reduce engine braking force applied to the drive wheels; and increasing braking force applied from the braking device to the driven wheels in response to the detection of speed reduction. - View Dependent Claims (42, 43, 44)
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45. A vehicular motion control system comprising:
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wheel cylinders provided for vehicle wheels, respectively; a hydraulic unit for supplying hydraulic pressure to each wheel cylinder; a drive shaft for applying a drive force to each wheel shaft; a drive source coupled to said drive shaft and capable of generating a negative driving force thereby to apply a braking force to each wheels; and control means for operating the hydraulic unit and the drive source concurrently thereby to control a total braking force, which is a sum of a braking force applied from the hydraulic unit and the braking force applied from the drive source, to a demanded braking force.
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Specification