Patent ID: 8607655
Filing Date: 2013-12-17
Classification: F16H,Y10T

Abstract:
1. A transmission comprising: a transmission housing; a dual clutch assembly having a clutch housing connectable to a flywheel of an engine and a first and second output; a first, second, third, fourth, and fifth gear set, wherein the first gear set includes a first gear in mesh with a second gear and a third gear in mesh with the second gear, the second gear set includes a first gear in mesh with a second gear and a third gear, the third gear set includes a first gear in mesh with a second gear and a third gear, the fourth gear set includes a first gear in mesh with a second gear, the fifth gear set includes a first gear in mesh with a second gear; a first transmission input member selectively coupled for common rotation to the flywheel via the dual clutch assembly, and wherein each of the first gear of the third, fourth and fifth gear sets are rotatably fixed for common rotation on the first transmission input member; a second transmission input member selectively coupled for common rotation to the flywheel via the dual clutch assembly, and wherein each of the first gear of the first and second gear sets are rotatably fixed for common rotation with the second transmission input member; a first countershaft disposed parallel to the first and second transmission input members, wherein the third gear of the first gear set, the third gear of the second gear set, the third gear of the third gear set and the second gear of the fourth gear set are each selectively connectable for common rotation with the first countershaft; a second countershaft disposed parallel to the first and second transmission input members, and wherein the second gear of the first gear set, the second gear of the second gear, and the second gear of the fifth gear set are each selectively connectable for common rotation with the second countershaft; four synchronizer assemblies for selectively coupling at least one of the gears of the first, second, third, fourth and fifth gear sets with at least one of the first countershaft and the second countershaft, and wherein the selective engagement of 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 four synchronizer assemblies establishes at least one of seven forward speed ratios.