EP0311098A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for distributing drive power in the drive train of a four wheel drive vehicle
Assignee: Nissan Motor Co Ltd
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Filing: 1988-10-07
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Granted: —
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Expires: 2008-10-07
Abstract
Abstract In order to improve the steering and handling characteristics of a four wheel drive vehicle wherein at least one of the front and rear sets of wheels are provided with an auxiliary steering device, the steering condition of the vehicle is sensed and in the event that the steering is such that yaw can be easily induced the amount of power which is distributed to the front wheels is decreased relative to the amount prior the instant steering condition being established and vice versa.
Inventors
- 👤 Hideo Ito
- 👤 Masatsugu Yokote
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 20:33
CPC Classifications
B; B60; B60K; B60K23/00; B60K23/08; B60K23/0808; B60K17/00; B60K17/34; B60K17/358; B62; B62D; B62D7/00; B62D7/06; B62D7/14; B62D7/15; B62D7/1554; B62D7/1572; B62D7/159; B60W; B60W2520/00; B60W2520/14; B60W2540/00; B60W2540/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
220 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount the yaw rate is increased by said auxiliary steering device; a device for distributing driving torque form a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced changes, the amount by which said driving torque distribution device distributes driving torque between the front and rear wheels is changed relative to the torque distribution before one of the auxiliary steering and the yaw rate varies in a manner to avoid sudden changes in the steering characteristics of the vehicle.
Claim 2
Dependent Claim
220 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount the yaw rate is increased by said auxiliary steering device; a device for distributing driving torque form a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced changes, the amount by which said driving torque distribution device distributes driving torque between the front and rear wheels is changed relative to the torque distribution before one of the auxiliary steering and the yaw rate varies in a manner to avoid sudden changes in the steering characteristics of the vehicle.
Claim 3
Dependent Claim
208 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount the yaw rate is increased by said auxiliary steering device; a device for distributing driving torque from a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced in increased, the amount by which said driving torque distribution device distributes driving torque to the front wheels is reduced relative to the amount of torque distribution before one of the auxiliary steering and the yaw rate is increased.
Claim 4
Dependent Claim
208 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount the yaw rate is increased by said auxiliary steering device; a device for distributing driving torque from a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced in increased, the amount by which said driving torque distribution device distributes driving torque to the front wheels is reduced relative to the amount of torque distribution before one of the auxiliary steering and the yaw rate is increased.
Claim 5
Dependent Claim
208 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount of yaw rate is increased by said auxiliary steering device; a device for distributing driving torque from a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced is attenuated, the amount by which said driving torque distribution device distributes driving torque to the front wheels is increased relative to the amount of torque distribution before one of the auxiliary steering and the yaw rate is increased.
Claim 6
Dependent Claim
208 words
In a four wheel drive train for an automotive vehicle: an auxiliary steering device for providing auxiliary steering of at least one of said front and rear wheels, said auxiliary steering device being responsive to a manually induced steering angle of the front wheels in a manner to vary the amount of auxiliary steering produced by said auxiliary steering device; auxiliary steering control means for controlling said auxiliary steering device; sensor means for sensing the steering condition which is induced by the amount of yaw rate is increased by said auxiliary steering device; a device for distributing driving torque from a prime mover between the forward and rear wheels of the vehicle; a device for controlling said torque distribution device; and means for correcting the amount of driving torque which is supplied to the front wheels by said torque distributing device, said correcting means being responsive to said sensor means in a manner wherein when sensor means senses a steering condition wherein the ease with which yaw can induced is attenuated, the amount by which said driving torque distribution device distributes driving torque to the front wheels is increased relative to the amount of torque distribution before one of the auxiliary steering and the yaw rate is increased.
References Cited (Backward Citations)
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