US 12,031,615 B2
Transmission, a powertrain and a vehicle
Anders Hedman, Marstrand (SE); Johan Folkesson, Skene (SE); and Sven Norberg, Hisings Backa (SE)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed on Feb. 9, 2023, as Appl. No. 18/107,598.
Claims priority of application No. 22164981 (EP), filed on Mar. 29, 2022.
Prior Publication US 2023/0313865 A1, Oct. 5, 2023
Int. Cl. F16H 3/00 (2006.01); F16H 3/46 (2006.01)
CPC F16H 3/006 (2013.01) [F16H 3/46 (2013.01); F16H 2200/0004 (2013.01); F16H 2200/0021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A transmission for a vehicle, comprising:
a first input shaft, a second input shaft, a countershaft, a main shaft, and an output shaft,
a first gear plane comprising a first input shaft gearwheel arranged on the first input shaft, a first main gearwheel rotatably arranged on the main shaft, and a first countershaft gearwheel arranged on the countershaft, the gearwheels of the first gear plane being arranged in mutual driving connection,
a second gear plane comprising a second input shaft gearwheel arranged on the second input shaft, a second main gearwheel rotatably arranged on the main shaft, and a second countershaft gearwheel arranged on the countershaft, the first countershaft gearwheel being selectively drivingly connectable to the second countershaft gearwheel, the gearwheels of the second gear plane being arranged in mutual driving connection,
a first gear engaging device selectively settable to one of:
a neutral state, and
a single engaged state, in which it drivingly connects the first main gearwheel to the main shaft,
a second gear engaging device selectively settable to one of:
a neutral state, and
an engaged state, in which it drivingly connects the second main gearwheel to the main shaft,
wherein the output shaft is drivingly connectable to the main shaft, and wherein the transmission is configured to only enable transfer of torque between the first input shaft and the output shaft via the main shaft, and to only enable transfer of torque between the second input shaft and the output shaft via the main shaft,
wherein the second gear plane further comprises a first input shaft second gearwheel rotatably arranged on the first input shaft, and wherein the transmission further comprises a fourth gear engaging device for selectively rotationally connecting the first input shaft second gearwheel to the first input shaft.