System, method, and apparatus for operating a high efficiency, high output transmission
AssigneeEaton Cummins Automated Transmission Technologies, LLC
InventorsJeff Hawarden, Yeidei Wang, Thomas Connolly, Sipei Chen, Graeme Andrew Jackson
Life of this patent
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Abstract
A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.
Claims20
A computer product in a non-transitory memory for controlling a vehicle based on a shaft displacement angle and a zero or imminent zero torque region of a transmission, wherein the computer product configures a processor when implemented from the memory to:
- determine that the transmission is in one or more of:
- a zero torque region, an imminent zero torque region, a backlash region, and an imminent backlash region;
- wherein the determination is based at least in part upon a shaft displacement angle that comprises an angle value representative of a rotational displacement difference between at least two shafts of a transmission;
- and
- selectively control a transmission operation based at least in part upon the determination.
An apparatus comprising a torque state description logic that selectively controls a transmission operation based at least in part upon a determination that a shaft displacement angle between at least two shafts of a transmission meets a predetermined program code that indicates the transmission is in one or more of:
- a zero torque region;
- an imminent zero torque region;
- a backlash region;
- and
- an imminent backlash region.
A method for controlling a vehicle based on shaft displacement angle and a zero or imminent zero torque region of a transmission, comprising:
- determining that the transmission is in one of:
- a zero torque region, an imminent zero torque region, a backlash region and an imminent backlash region;
- wherein the determining is based at least in part upon a shaft displacement angle that comprises an angle value representative of a rotational displacement difference between at least two shafts of a transmission;
- and
- selectively controlling a transmission operation based at least in part upon the determination.
Dependencies are inferred from the claim text.