Heavy duty transmission architecture
AssigneeEaton Cummins Automated Transmission Technologies, LLC
InventorsPaul R. Peterson, Joseph D. Reynolds
Life of this patent
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Abstract
A transmission includes a main shaft having two or more main shaft clutches that couple gears to at least one countershaft, and an automated manual transmission coupled to the main shaft via the at least one countershaft. The automated manual transmission includes a front input shaft coupled directly to a main clutch and having a first clutch coupleable to the at least one countershaft, and a rear input shaft coupled to the front input shaft and having a second clutch coupleable to the at least one countershaft. The automated manual transmission is operable to selectively engage the first clutch and the second clutch.
Claims5
An automated manual transmission, comprising:
- an input shaft having an input shaft clutch coupleable to a first drive gear and a second drive gear each being in meshing engagement with first and second corresponding gears on a pair of countershafts;
- a main shaft having two main shaft clutches including a first main shaft clutch and a second main shaft clutch, the first main shaft clutch engageable with the second drive gear on the input shaft in a fore direction and a first main shaft gear on the main shaft in an aft direction, and the second main shaft clutch engageable with a second main shaft gear in the fore direction and a third main shaft gear in the aft direction, the first main shaft gear, the second main shaft gear and the third main shaft gear all being in driving engagement with third, fourth, and fifth corresponding gears on the pair of countershafts;
- and
- wherein the automated manual transmission is operable to selectively engage the input shaft clutch, the first main shaft clutch and the second main shaft clutch.
Dependencies are inferred from the claim text.