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US 10,473,542 B2Granted
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
Estimating the term…
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 system, comprising:
- a transmission comprising 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 a torque output to a driveline;
- and
- a controller comprising:
- a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts;
- a shift state description circuit structured to determine that a synchronizer is unblocked in response to the angle value;
- a displacement response circuit structured to provide a shift engagement command in response to the determining the synchronizer is unblocked;
- and
- a shift actuator responsive to the shift engagement command.
5 more elements
A system, comprising:
- a transmission comprising:
- 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 a torque output to a driveline;
- a countershaft selectively coupled to the input shaft at a first end, and selectively coupled to the output shaft at a second end;
- wherein the countershaft is selectively coupled to the output shaft at the second end via a main shaft selectively coupled to the output shaft;
- and
- a controller comprising:
- a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts of the transmission, and wherein the shaft displacement angle comprises at least one angle selected from the angles consisting of:
- an input angle comprising an angle value representative of a rotational displacement difference between the input shaft and the countershaft;
- a main box angle comprising a rotational displacement difference between the countershaft and the output shaft;
- an output angle comprising a rotational displacement difference between the input shaft and the output shaft;
- and
- a torque input determination circuit structured to determine a prime mover torque value in response to the shaft displacement angle and
- a displacement response circuit structured to provide, in response to the prime mover torque value, a prime mover torque pulse command to alter gear mesh orientation.
10 more elements
An apparatus, comprising:
- a shaft displacement circuit structured to interpret a shaft displacement angle, the shaft displacement angle comprising an angle value representative of a rotational displacement difference between at least two shafts of a transmission;
- a shift state description circuit structured to determine that a synchronizer is unblocked in response to the angle value;
- and
- a displacement response circuit structured to provide a shift engagement command in response to the determining the synchronizer is unblocked.
1 more element
Dependencies are inferred from the claim text.