Patent ID: 9453558
Filing Date: 2016-09-27
CPC Classification: F16H

Claim Text:
1. A transmission comprising: a transmission housing; a dual clutch assembly having a first clutch, a second clutch and a clutch housing connectable to an engine output member, wherein the clutch housing is rotationally supported within the transmission housing; a first, second, third, fourth and fifth gear set, wherein the first gear set includes a first gear in mesh with a second gear, the second gear set includes a first gear in mesh with a third gear and wherein the third gear is in mesh with a second gear, the third gear set includes a first gear in mesh with a third gear and wherein the third gear is in mesh with a second gear, the fourth gear set includes a first gear in mesh with a second gear and a third gear and the fifth gear set includes a first gear in mesh with a second gear; a first transmission input member rotatably supported in the transmission housing and wherein the first gear of the second gear set is rotatably fixed for common rotation with the first transmission input member and wherein the selective engagement of the first clutch of the dual clutch assembly transfers torque from the clutch housing to the first transmission input member; a second transmission input member rotatably supported in the transmission housing and wherein the first gear of the third gear set is rotatably fixed for common rotation with the second transmission input member and wherein the second transmission input member is concentric with the first transmission input member and at least partially surrounds the first transmission input member and wherein the selective engagement of the second clutch of the dual clutch assembly transfers torque from the clutch housing to the second transmission input member; a first countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input members, wherein the first gear of the first gear set is fixed for common rotation with the first countershaft; a second countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input members, wherein the second gear of the first gear set, the third gear of the fourth gear set are each fixed for common rotation with the second countershaft, and wherein the third gear of the second gear set, the third gear of the third gear set are each selectively connectable for common rotation with the second countershaft; a third countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input members, wherein the second gear of the fifth gear set is fixed for common rotation with the third countershaft; a first countershaft transfer gear selectively connectable to the first countershaft for common rotation with the first countershaft; a second countershaft transfer gear selectively connectable to the third countershaft for common rotation with the third countershaft wherein the first and second countershaft transfer gears transfer torque to a transmission output member; a first sleeve shaft rotatably supported in the transmission housing and at least partially overlaps the first countershaft and wherein the second gear of the second gear set and the first gear of the fifth gear set are rotatably fixed for common rotation with the first sleeve shaft; a second sleeve shaft rotatably supported in the transmission housing and at least partially overlaps the first sleeve and wherein the second gear of the third gear set and the second gear of the fourth gear set is rotatably fixed for common rotation with the second sleeve shaft; and five synchronizer assemblies for selectively coupling at least one of gears of the five gear sets with at least one of the sleeve shafts and the first, second and third countershafts, and wherein the selective engagement of the first and second clutches of the dual clutch assembly interconnects the dual clutch housing with at least one of the first and the second transmission input members and the selective engagement of at least one of the five synchronizer assemblies establishes at least one of a plurality of forward and reverse speed ratios.