Method for Identifying a Road Condition During Driving of a Vehicle
First Claim
1. A method for identifying a road condition during driving of a vehicle, the vehicle comprising an engine connected to drive at least one wheel of the vehicle via a semi or fully automatic transmission,receiving input signals and processing the signals in accordance with programmed logic rules with at least one control unit to issue command output signals to the transmission for gear shifting,sensing a signal indicative of a presence of a first road condition,changing a gear shifting strategy for the transmission to a gear shifting strategy optimized for the first road condition via the control unit, if a present gear shifting strategy is a second gear shifting strategy for a second road condition, which differs from the first road condition,wherein the control unit is programmed to perform the change when a sensor arranged in the vehicle senses sudden changes over time of at least one of acceleration, frequency, wave length and amplitude for vertical movements of at least parts of the vehicle.
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Abstract
A method for identifying a road condition during driving of a vehicle. The vehicle includes an engine with an engine output shaft connected to an automated mechanical transmission via a clutch. A transmission output shaft is connected to at least one driven wheel of the vehicle, and the system further includes a vehicle suspension system with sensors for measuring the vertical movement of wheels of the vehicle relative vehicle bodywork, at least one control unit adapted to receive a variety of input signals and process those signals in accordance with programmed logic rules to issue command output signals to the engine, for torque request, to the transmission for gear shifting and to the clutch. The control unit, when sensing driving conditions, sends signals indicative of a first road condition and is programmed to change gear shifting strategy for the transmission to a gear shifting strategy optimized for the first road condition if present gear shifting strategy is a second gear shifting strategy for a second road condition. One of the road conditions can be off-road.
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8 Claims
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1. A method for identifying a road condition during driving of a vehicle, the vehicle comprising an engine connected to drive at least one wheel of the vehicle via a semi or fully automatic transmission,
receiving input signals and processing the signals in accordance with programmed logic rules with at least one control unit to issue command output signals to the transmission for gear shifting, sensing a signal indicative of a presence of a first road condition, changing a gear shifting strategy for the transmission to a gear shifting strategy optimized for the first road condition via the control unit, if a present gear shifting strategy is a second gear shifting strategy for a second road condition, which differs from the first road condition, wherein the control unit is programmed to perform the change when a sensor arranged in the vehicle senses sudden changes over time of at least one of acceleration, frequency, wave length and amplitude for vertical movements of at least parts of the vehicle.
Specification