Methods and systems for a multispeed transmission
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorsJordan M. HOUSER, James ALLEN
Life of this patent
Estimating the term…
Abstract
Various methods and systems are provided for a multispeed transmission. In one example, a method to increasing a shift performance of a transmission with actuated clutches comprises controlling an engagement depth of a clutch based on a gear that is being selected by the clutch. A target engagement depth of the clutch may be retrieved from a gear selection matrix in a lookup table stored in the memory of a controller of the transmission. The target engagement depth may depend on an amount of torque expected to be transferred to the gear.
Claims20
A method to decrease a shifting time for a transmission with actuated clutches, the method comprising:
- controlling an engagement depth of a clutch based on a gear of the transmission that is being selected by the clutch.
A transmission system, comprising:
- a controller including one or more processors, and a memory storing instructions executable by the one or more processors to:
- in response to a shift condition being met to shift from a first gear of the transmission system to a second gear of the transmission system, the first gear engaged at a first target engagement depth:
- select a second target engagement depth of the second gear;
- actuate a clutch of the transmission system to disengage from the first gear of the transmission system;
- and
- actuate the clutch to engage the second gear of the transmission system with the second target engagement depth.
A method, comprising:
- in response to a first shift condition, actuating a clutch of a transmission to engage a first output gear at a first target engagement depth;
- and
- in response to a second shift condition, actuating the clutch to engage a second output gear at a second target engagement depth, the second target engagement depth different from the first target engagement depth.
Dependencies are inferred from the claim text.