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US 2022/0252154 A1Published application
Clutch assembly for automated manual transmission
AssigneeCummins Inc.
InventorSteven M. Bellinger
Life of this patent
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Abstract
A system, method and apparatus are disclosed for a clutch assembly for an automated manual transmission. The clutch assembly includes a dual power path. One power path connects a prime mover to the automated manual transmission via a wet clutch, and a second power path connects one of the prime mover and the automated manual transmission to a grounded connection for synchronizing the speed thereof for a gear change.
Claims24
A vehicle system comprising:
- a powertrain including an automated manual transmission and a prime mover;
- and
- a clutch assembly including first power path for connecting the prime mover to the automated manual transmission and a second power path for connecting one of the prime mover and the automated manual transmission to a grounded connection to decelerate the grounded one of the prime mover and the automated manual transmission.
A method comprising:
- operating a vehicle system including an automated manual transmission;
- determining an upshift event for the vehicle system;
- disengaging a prime mover of the vehicle from the automated manual transmission;
- engaging the prime mover to a grounded connection to decelerate the prime mover;
- and
- re-engaging the prime mover to the automated manual transmission in response to the prime mover obtaining a speed that is synchronized for engagement with a next gear of the automated manual transmission.
3 more elements
An apparatus, comprising:
- a clutch assembly for selectively connecting a prime mover to an automated manual transmission, wherein the clutch assembly includes:
- a first clutch that, when engaged, connects the prime mover to the automated manual transmission;
- and
- a second clutch that, when engaged, connects one of the prime mover and the automated manual transmission to a grounded connection to decelerate the one of the prime mover and the automated manual transmission.
1 more element
A method comprising:
- operating a vehicle system including an automated manual transmission;
- disengaging a prime mover of the vehicle from the automated manual transmission;
- determining a neutral gear state with an engine speed at or near low idle speed;
- and
- engaging the automated manual transmission to a grounded connection to ground the automated manual transmission during the neutral gear state.
2 more elements
Dependencies are inferred from the claim text.