Motion stabilizer for combined vehicle
First Claim
1. A motion stabilizer for a combined vehicle including a tractor and a trailer connected to the tractor, the motion stabilizer comprising:
- a pendular motion determination unit configured to determine whether or not a pendular motion caused by a swaying motion of the trailer is imparted to the tractor;
a braking control unit configured to exercise a braking control upon detection of the pendular motion; and
an engine torque control unit configured to exercise an engine torque control for regulating an engine torque produced by an engine, which engine torque control includes placing a limitation on the engine torque upon detection of the pendular motion,wherein a start of the engine torque control unit relaxing the limitation on the engine torque is timed to occur prior to a start of the braking control unit bringing the braking control to an end.
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Accused Products
Abstract
A motion stabilizer for a combined vehicle includes a pendular motion determination unit configured to determine whether or not a pendular motion caused by a swaying motion of the trailer is imparted to the tractor, a braking control unit configured to exercise a braking control upon detection of the pendular motion, and an engine torque control unit configured to exercise an engine torque control for regulating an engine torque produced by an engine, which engine torque control includes placing a limitation on the engine torque upon detection of the pendular motion. A start of the engine torque control unit relaxing the limitation on the engine torque is timed to occur prior to a start of the braking control unit bringing the braking control to an end.
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Citations
7 Claims
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1. A motion stabilizer for a combined vehicle including a tractor and a trailer connected to the tractor, the motion stabilizer comprising:
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a pendular motion determination unit configured to determine whether or not a pendular motion caused by a swaying motion of the trailer is imparted to the tractor; a braking control unit configured to exercise a braking control upon detection of the pendular motion; and an engine torque control unit configured to exercise an engine torque control for regulating an engine torque produced by an engine, which engine torque control includes placing a limitation on the engine torque upon detection of the pendular motion, wherein a start of the engine torque control unit relaxing the limitation on the engine torque is timed to occur prior to a start of the braking control unit bringing the braking control to an end. - View Dependent Claims (2)
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3. A motion stabilizer for a combined vehicle including a tractor and a trailer connected to the tractor, the motion stabilizer comprising:
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a pendular motion determination unit configured to determine whether or not a pendular motion caused by a swaying motion of the trailer is imparted to the tractor; a braking control unit configured to exercise a braking control upon detection of the pendular motion; and an engine torque control unit configured to exercise an engine torque control for regulating an engine torque produced by an engine, which engine torque control includes placing a limitation on the engine torque upon detection of the pendular motion, wherein a start of the engine torque control unit relaxing the limitation on the engine torque is timed to occur prior to a start of the braking control unit bringing the braking control to an end, and the engine torque control unit is configured to relax the limitation on the engine torque based upon at least one of a vehicle speed of the tractor and a value related to a yaw rate of the tractor, and the engine torque control unit includes; a yaw rate based permissible torque computation unit configured to compute a yaw rate based permissible torque that is increased if the value related to the yaw rate of the tractor is smaller than a first predetermined yaw rate; and a vehicle speed based permissible torque computation unit configured to compute a vehicle speed based permissible torque that is increased if the vehicle speed of the tractor is smaller than a first predetermined vehicle speed, wherein the engine torque control unit is configured to select, as an engine torque permissible limit, a greater one of the yaw rate based permissible torque and the vehicle speed based permissible torque, and to permit the engine torque to be produced within the engine torque permissible limit. - View Dependent Claims (4, 5, 6, 7)
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Specification