Motor vehicle with overspeed protector for the prime mover
AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG
InventorsKlaus Kupper, Klaus Henneberger
Life of this patent
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Abstract
The invention pertains to a motor vehicle with overspeed protector. The clutch in the power train of the motor vehicle can be operated in dependency upon the engine speed in such a way that it is disengaged or operates with slip when the engine speed exceeds a preselected limit while the clutch is engaged. The threshold value of the engine speed is ascertained on the basis of the prevailing (instantaneous) engine speed and the prevailing (instantaneous) or desired increase of transmission ratio. Gear shifting errors and overspeeding of the vehicle are thus prevented in a manner which is more reliable than by following prior proposals.
Claims6
A wheeled motor vehicle, comprising:
- a variable-RPM prime mover;
- a transmission having a plurality of ratios;
- a torque transmitting clutch installed between said prime mover and said transmission, said clutch being engageable in dependency upon the RPM of the prime mover;
- and
- control means for preventing overrevving of the prime mover, including means for effecting one of a disengagement of the clutch and an operation of the clutch with slip when the RPM of the prime mover exceeds a preselectable threshold value, said threshold value being ascertained on the basis of at least one of (a) the momentary speed of the motor vehicle, the RPM of the wheels of the motor vehicle and a parameter denoting the momentary speed of the motor vehicle, and (b) a signal representing one of the momentary and sought-after ratios of the transmission, wherein:
- said control means further includes means for ascertaining said momentary ratio of the transmission on the basis of the previously selected ratio of the transmission.
Dependencies are inferred from the claim text.