Back to results
US 10,908,040 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
An apparatus, comprising:
- a shaft displacement logic configured 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 torque state description logic configured to determine, in response to the shaft displacement angle, that the transmission is in one of:
- a zero torque region;
- or an imminent zero torque region;
- and
- a displacement response logic configured to perform a transmission operation in response to at least one of:
- the shaft displacement angle, the zero torque region, or the imminent zero torque region.
4 more elements
A transmission, comprising:
- an input shaft configured to couple to a prime mover;
- a countershaft having a first plurality of gears mounted thereon;
- a main shaft having a second plurality of gears mounted thereon;
- an output shaft selectively providing a torque output to a driveline;
- a shift actuator configured to selectively couple the input shaft to the main shaft by rotatably coupling at least one of the first plurality of gears to the countershaft and the second plurality of gears to the main shaft;
- a controller, comprising:
- a shaft displacement logic configured 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 torque state description logic configured to determine, in response to the shaft displacement angle, that the transmission is in one of:
- a zero torque region;
- or an imminent zero torque region;
- and
- a displacement response logic configured to perform a transmission operation in response to at least one of:
- the shaft displacement angle, the zero torque region, or the imminent zero torque region, the transmission operation comprising an operation of the shift actuator.
10 more elements
A method, comprising:
- interpreting 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;
- determining, in response to the shaft displacement angle, that the transmission is in one of:
- a zero torque region;
- or an imminent zero torque region;
- and
- performing a transmission operation in response to at least one of:
- the shaft displacement angle, the zero torque region, or the imminent zero torque region.
4 more elements
Dependencies are inferred from the claim text.