Electromechanical transmission control apparatus
AssigneeBorg-Warner Automotive, Inc.
InventorDavid R. Weilant
Life of this patent
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Abstract
An apparatus for controlling a transmission includes a shifting actuator with an plurality of electric motors for shifting gears of the transmission. A load on the synchronizer is measured when shifting the gears of the transmission. The load is measured by sensors on the load fork. Compensating springs can alternatively be included. The position of the fork relative to the synchronizer mechanism is determined by a position sensor in communication with the rod or in communication with the load fork itself.
Claims18
An apparatus for controlling a transmission, having a plurality of synchronizers, comprising:
- a shifting actuator having a plurality of electric motors for shifting gears of the transmission;
- a rod extending from each of said motors, and rotating in response thereto;
- a rack in communication with said rod and moving in a linear direction in response to said rotation of said rod;
- a shift fork in communication with each rod extending from each of said motors and moving in response to said movement of said rack, each shift fork helping to effect the engagement of a plurality of gears;
- and
- at least one load sensor positioned on each of said shift forks for determining the load on each synchronizer as a result of movement of said shift fork.
An apparatus for controlling and monitoring the operation of a transmission, the transmission having at least one synchronizer, comprising:
- an electronic gear selector having an interface to allow a user to communicate therewith;
- a controller in communication with said gear selector to send signals to an electric motor to shift the transmission into a particular gear for activation thereof to shift the transmission into a particular gear;
- a rod extending from said motor that rotates in response to activation of said motor;
- a rack in communication with said rod that moves linearly in response to said rotation of said rod;
- a shift fork in communication with said rack that moves in response to the movement of the rack to shift gears in accordance with said gear selector;
- and
- a load sensor on said fork for measuring the load on at least one synchronizer and sending a signal to said controller in response thereto.
Dependencies are inferred from the claim text.