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US 11,815,173 B1Granted
Method and system for transmission gear control
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorsJames Allen, Jordan M. Houser, Nathan Smith
Life of this patent
Estimating the term…
Abstract
Methods and systems for operating a transmission that includes one or more dog clutches are described. In one example, a torque capacity of a gear is estimated from an engagement depth of the dog clutch, and the gear may be held or shifted according to the torque capacity of the gear and a commanded torque.
Claims20
A vehicle system, comprising:
- a transmission including a dog clutch and a gear, the dog clutch including dog clutch teeth, the gear including gear teeth that may be selectively engaged to the dog clutch teeth;
- and
- a controller including executable instructions that when executed cause the controller to selectively indicate degradation of the gear according to a commanded torque being greater than a torque capacity of the gear.
A method for operating a vehicle, comprising:
- via a controller, shifting from a first gear to a second gear in response to a commanded torque being greater than a torque capacity of the first gear, where the torque capacity of the first gear is based on an amount of overlap between teeth of the first gear and teeth of a dog clutch.
A vehicle system, comprising:
- a transmission including a dog clutch and a gear, the dog clutch including dog clutch teeth, the gear including gear teeth that may be selectively engaged to the dog clutch teeth;
- and
- a controller including executable instructions that when executed cause the controller to shift the transmission in response to a commanded torque being greater than a torque capacity of the gear.
Dependencies are inferred from the claim text.