Method for monitoring the operating conditions of motor vehicles
First Claim
1. A method for monitoring the operating conditions of motor vehicles, with a drive system with at least one differential distributing drive torque to the driven wheels, wherein at least the output speeds of the differential and, via a steering angle sensor, an at least approximate driving of the motor vehicle in a straight line are detected and are compared over a time interval, and wherein when the differential speed of the output shafts is above a defined speed threshold and prevails over the time interval and the vehicle is driven in a straight line, a warning signal is generated.
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Abstract
The invention relates to a method and a device for monitoring the operating conditions of motor vehicles, with a drive system with at least one differential that distributes drive torque to the driven wheels. To avoid unacceptable wear in the differential of the drive system, it is proposed that at least the output speeds of the differential, and, via a steering angle sensor, an at least approximate driving of the motor vehicle in a straight line are detected and are compared over a time interval, and that in the case where the differential speed of the output shafts is above a defined speed threshold and prevails over the time interval and the vehicle is driven in a straight line, a warning signal is generated.
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Citations
14 Claims
- 1. A method for monitoring the operating conditions of motor vehicles, with a drive system with at least one differential distributing drive torque to the driven wheels, wherein at least the output speeds of the differential and, via a steering angle sensor, an at least approximate driving of the motor vehicle in a straight line are detected and are compared over a time interval, and wherein when the differential speed of the output shafts is above a defined speed threshold and prevails over the time interval and the vehicle is driven in a straight line, a warning signal is generated.
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10. A method of detecting an adverse operating condition of a motor vehicle provided with a differential gear assembly having an input shaft and a pair of output shafts, comprising:
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sensing the speeds of said output shafts for a selected interval of time under conditions where said vehicle is traveling in a straight line; computing one of the average speed and the summation of speeds of each of said output shafts to provide a representative speed of each of said output shafts; determining the differential of said representative speeds; comparing said representative speed differential with a selected differential; and generating a signal upon condition that said representative differential exceeds said selected differential. - View Dependent Claims (11, 12, 13)
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14. A system for detecting an adverse operating condition of a motor vehicle provided with a differential gear assembly having an input shaft and a pair of output shafts, comprising:
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means for sensing the speeds of said output shafts for a selected interval of time under conditions where said vehicle is traveling in a straight line; means for computing one of the average speed and the summation of speeds of each of said output shafts to provide a representative speed of each of said output shafts; means for determining the differential of speed representative speeds; means for comparing said representative speed differential with a selected differential; and means for generating a signal upon condition that said representative differential exceeds said selected differential.
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Specification