Motion control device of vehicle
First Claim
1. A motion control device for a vehicle provided with:
- understeer judging means for judging whether the turning state of the vehicle is an understeer state or not; and
braking force controlling means that exerts braking force on one or plural predetermined wheels among the front wheels and rear wheels of the vehicle for generating a yawing moment in the turning direction of the vehicle in case where the turning state of the vehicle is judged to be the understeer state, comprising;
actual lateral acceleration related amount obtaining means for obtaining an actual amount of a lateral acceleration related amount, that shows a degree of the turn of the vehicle, as an actual lateral acceleration related amount, wherein the braking force controlling means is configured to exert braking force for generating a yawing moment in the turning direction of the vehicle on the one or plural predetermined wheels and to exert braking force for generating a yawing moment in the direction opposite to the turning direction of the vehicle on one or plural other predetermined wheels, when the absolute value of the actual lateral acceleration related amount exceeds a predetermined value.
1 Assignment
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Accused Products
Abstract
A motion control device 10 for a vehicle exerts braking force only on the rear wheel at the inner side of the turning direction for generating a yawing moment on the vehicle only in the turning direction of the vehicle when an absolute value of an actual lateral acceleration Gy is not more than a value Gyth, i.e., when there is a small possibility of the occurrence of an excessive roll angle on the vehicle body, in case where the turning state of the vehicle is the understeer state. On the other hand, it exerts braking force not only on the rear wheel at the inner side of the turning direction, but also on the front and rear wheels at the outer side of the turning direction for generating a yawing moment in the direction opposite to the turning direction too, when the absolute value of the actual lateral acceleration Gy exceeds the value Gyth, i.e., when there is a great possibility of the occurrence of the excessive roll angle on the vehicle body, in case where the turning state of the vehicle is the understeer state.
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Citations
4 Claims
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1. A motion control device for a vehicle provided with:
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understeer judging means for judging whether the turning state of the vehicle is an understeer state or not; and
braking force controlling means that exerts braking force on one or plural predetermined wheels among the front wheels and rear wheels of the vehicle for generating a yawing moment in the turning direction of the vehicle in case where the turning state of the vehicle is judged to be the understeer state, comprising;
actual lateral acceleration related amount obtaining means for obtaining an actual amount of a lateral acceleration related amount, that shows a degree of the turn of the vehicle, as an actual lateral acceleration related amount, wherein the braking force controlling means is configured to exert braking force for generating a yawing moment in the turning direction of the vehicle on the one or plural predetermined wheels and to exert braking force for generating a yawing moment in the direction opposite to the turning direction of the vehicle on one or plural other predetermined wheels, when the absolute value of the actual lateral acceleration related amount exceeds a predetermined value. - View Dependent Claims (2, 3, 4)
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Specification