Abstract: A transmission includes an input member, an output member, first and second interconnecting members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A transmission includes an input member, an output member, first and second interconnecting members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A transmission includes an input member, an output member, first and second interconnecting members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A transmission connectable to an input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, an idler shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the transmission input members and the output member.

Abstract: A transmission includes an input member, an output member, first and second interconnecting members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A double-clutch transmission (DCT) includes, but is not limited to an inner input shaft inside an outer input shaft. A first clutch disc and a second clutch disc of the DCT are connected to the two input shafts respectively. Pinions are fixed onto three parallel layshafts of the DCT respectively. The gearwheels on the layshafts include, but are not limited to seven gearwheel groups. Each of the gearwheel group includes, but is not limited to a fixed gearwheel that meshes with an idler gearwheel. A fourth fixed gearwheel on the outer input shaft meshes with the fourth gear idler gearwheel and the sixth gear idler gearwheel. In particular, a fifth fixed gearwheel on the inner input shaft meshes with a fifth gear idler gearwheel and the seventh gear idler gearwheel. The gearwheels further includes, but is not limited to a reverse gearwheel group that includes, but is not limited to a fixed gearwheel on one of the input shafts, meshing with a reverse gear idler gearwheelon one of the layshafts.

Abstract: A double-clutch transmission includes, but is not limited to an inner input shaft and an outer input shaft that are connected to a first clutch and a second clutch respectively. A first layshaft and a second layshaft of the DCT are spaced apart and arranged in parallel to the input shafts. Gearwheels of the DCT are arranged on the first layshaft, on the second layshaft, on the inner input shaft and on the outer input shaft. The gearwheels include, but are not limited to seven gearwheel groups for providing seven sequentially increasing gears. Each of the gearwheel groups includes, but is not limited to a fixed gearwheel on one of the input shafts that meshes with an idler gearwheel on one of the layshafts. A fourth fixed gearwheel meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel. A third fixed gearwheel meshes with a third gear idler gearwheel and a fifth gear idler gearwheel.

Abstract: A double-clutch transmission (DCT)includes, but is not limited to an inner input shaft inside an outer input shaft. Two clutches of the DCT are connected to the input shafts respectively. The DCT has three layshafts that are parallel to the input shafts. One or more pinions are fixed onto the layshafts respectively. Seven forward gearwheel groups and one reverse gearwheel group of the DCT are arranged on the shafts. Each one of the gearwheel groups comprises a fixed gearwheel on one of the input shafts, meshing with an idler gearwheel on one of the layshafts. In particular, a third fixed gearwheel meshes with a third idler gearwheel and a fifth idler gearwheel. Especially, the DCT includes, but is not limited to a park-lock.

Abstract: A double-clutch transmission (DCT) includes, but is not limited to two input shafts that are connected to two clutches separately. Three layshafts of the DCT are spaced apart from the input shafts in parallel. One or more of the layshafts includes, but are not limited to a pinion. Gearwheels of eight gearwheel groups are arranged on the shafts for providing seven sequentially increasing forward gears and one reverse gear. Each one of the gearwheel groups comprises a fixed gearwheel on one of the input shaft, meshing with an idler gearwheel on one of the layshafts. A third fixed gearwheel meshes with a third gear idler gearwheel and a fifth gear idler gearwheel. Especially, a fourth fixed gearwheel meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel.

Abstract: A double-clutch transmission includes, but is not limited to an inner input shaft inside an outer input shaft. Two clutch discs are connected to the two input shafts, respectively. Three layshafts of the DCT are parallel to the input shafts and one of the layshafts has a pinion at en end. Gearwheels on the shafts include, but are not limited to seven gearwheel groups for providing seven sequentially increasing forward gears. Each of the groups comprises a fixed gearwheel on the inner input shaft, meshing with an idler gearwheel on one of the layshafts for providing a forward gear. A fourth fixed gearwheel meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel. Especially, the DCT further includes, but is not limited to comprises the double-clutch transmission that includes, but is not limited to a park-lock gearwheel fixed onto one of the layshafts that carries a final drive pinion.

Abstract: A double-clutch transmission (DCT) includes, but is not limited to two input shafts that are connected to two clutch discs respectively. The DCT also has three parallel layshafts. One or more of the layshafts includes, but is not limited to a pinion as a final drive. The DCT also includes, but is not limited to seven gearwheel groups for providing seven sequentially increasing forward gears. Each gearwheel group includes, but is not limited to a fixed gearwheel on one of the input shafts, meshing with an idler gearwheel on one of the layshafts. A third fixed gearwheel meshes with a third gear idler gearwheel and a fifth gear idler gearwheel. Especially, a reverse gearwheel group of the DCT includes, but is not limited to a reverse fixed gearwheel on one of the input shafts, meshing with a reverse gear idler gearwheel on one of the layshafts for providing a reverse gear. A second fixed gearwheel meshes with a second gear idler gearwheel and a fourth gear idler gearwheel.

Abstract: Double-clutch transmission (DCT) includes, but is not limited to two input shafts that are connected to two clutch discs respectively. The DCT further includes, but is not limited to gearwheels on layshafts and the input shafts. The gearwheels include, but are not limited to six gearwheel groups for providing six gears respectively. Each of the gearwheel groups include, but are not limited to a fixed gearwheel on one of the input shafts, meshing with an idler gearwheel on one of the layshafts. A third fixed gearwheel meshes with the third gear idler gearwheel and the fifth gear idler gearwheel. Additionally, the DCT device further includes, but is not limited to a seventh gearwheel group for providing a seventh gear. The seventh gearwheel group includes, but is not limited to a seventh fixed gearwheel, meshing with a seventh gear idler gearwheel. The DCT further includes, but is not limited to a reverse gear idler shaft and one reverse gearwheel on the reverse gear idler shaft for providing a reverse gear.

Abstract: A transmission connectable to an input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, an idler shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the transmission input members and the output member.

Abstract: A transmission includes an input member, an output member, first and second interconnecting members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A resilient shifting force transmitting device for a manual gear shift apparatus has a spring rate which is variable according to the amount of deformation. Specifically, the device has a first, high spring rate at a first, low deformation and a second, low spring rate at a second, high deformation.