System and method of controlling axle hop in a vehicle
AssigneeNissan North America, Inc.
InventorsPaul Robson, Scott Warnecke
Life of this patent
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Abstract
A control system for controlling axle hop in a vehicle includes a sensor and an electronic controller. The sensor is configured to detect a vibration of an axle and to detect a wheel slip of a wheel. The electronic controller is configured to determine whether one of the detected axle vibration exceeds a first predetermined threshold or the detected wheel slip exceeds a second predetermined threshold. An engine traction control system is started upon determining that the one of the detected axle vibration exceeds the first predetermined threshold or that the detected wheel slip exceeds the second predetermined threshold.
Claims12
A control system for controlling axle hop in a vehicle, the control system comprising:
- a sensor configured to detect a vibration of an axle and to detect a wheel slip of a wheel;
- an electronic controller configured to
- determine that an engine traction control system is turned off;
- determine that a four-wheel drive high system is turned on upon determining that the engine traction control system is turned off;
- determine whether the detected axle vibration exceeds a first predetermined threshold and the detected wheel slip exceeds a second predetermined threshold upon determining that the engine traction control system is turned off and that the four-wheel drive high system is turned on;
- and
- start an engine traction control system upon determining that the detected axle vibration exceeds the first predetermined threshold and that the detected wheel slip exceeds the second predetermined threshold.
A method for controlling axle hop in a vehicle, the method comprising the steps of:
- detecting a vibration of an axle;
- detecting a wheel slip of a wheel;
- determine that an engine traction control system is turned off;
- determine that a four-wheel drive high system is turned on upon determining that the engine traction control system is turned off;
- determining whether the detected axle vibration exceeds a first predetermined threshold and the detected wheel slip exceeds a second predetermined threshold upon determining that the engine traction control system is turned off and that the four-wheel drive high system is turned on;
- starting the engine traction control system upon determining that the detected axle vibration exceeds the first predetermined threshold and that the detected wheel slip exceeds the second predetermined threshold;
- and
- stopping the engine traction control system upon determining that the detected axle vibration is equal to or less than the first predetermined threshold and that the detected wheel slip is equal to or less than the second predetermined threshold.
Dependencies are inferred from the claim text.