A parallel axis gear configuration constructed in accordance to one example of the present disclosure can include a first gear having a first gear tooth that includes a lead crowning across a face width thereof. The lead crowning can include (i) a first lead crown defined from a centerline to a transition point and (ii) a second lead crown defined from the transition point to a first end point. The lead crowning can include a drop-off magnitude that is greater at the second lead crown than the first lead crown.

A parallel axis gear configuration constructed in accordance to one example of the present disclosure can include a first gear having a first gear tooth that includes a lead crowning across a face width thereof. The lead crowning can include (i) a first lead crown defined from a centerline to a transition point and (ii) a second lead crown defined from the transition point to a first end point. The lead crowning can include a drop-off magnitude that is greater at the second lead crown than the first lead crown.

Systems for a differential are provided. The differential includes two sets of pinion gears with an asymmetric split tooth profile. A case of the differential includes a plurality of lubrication ports which open adjacent to untoothed sections of one set of pinion gears and in a drive mode and an outboard axial load is exerted on the corresponding set of pinion gears.

A cap for a helical LSD is provided with: a clutch member including clutch teeth; a clutch ring including a ring portion including clutch teeth so as to mesh with the clutch member and one or more tab portions projecting radially outwardly from the ring portion; a cap main body fixed on an axial end of the casing; a receding portion of the cap main body receding from a first face toward a second face and being so dimensioned as to receive and allow the clutch ring to be axially movable, the receding portion including one or more dock portions respectively receiving the tab portions; an opening to allow access to the tab portions; side faces of the tab portions and inner faces of the dog portions so that the faces in combination axially press the clutch ring toward the clutch member; and one or more base portions.

A cap for a helical LSD is provided with: a clutch member including clutch teeth; a clutch ring including a ring portion including clutch teeth so as to mesh with the clutch member and one or more tab portions projecting radially outwardly from the ring portion; a cap main body fixed on an axial end of the casing; a receding portion of the cap main body receding from a first face toward a second face and being so dimensioned as to receive and allow the clutch ring to be axially movable, the receding portion including one or more dock portions respectively receiving the tab portions; an opening to allow access to the tab portions; side faces of the tab portions and inner faces of the dog portions so that the faces in combination axially press the clutch ring toward the clutch member; and one or more base portions.

A planetary transmission device with a small tooth number difference for implementing smart workload self-adaptation comprises a left planetary gear (5), a right planetary gear (2), a left-end disk (4), a right-end disk (1), a housing (3) and a connection member (8). One end of the connection member (8) axially runs through the left planetary gear (5) and the right planetary gear (2). End parts of both ends of the connection member (8) are fixedly connected to the left-end disk (4) and the right-end disk (1) respectively. The left planetary gear (5) is engaged with both the tooth profile on the left-end disk (4) and the tooth profile on the housing (3). The right planetary gear (2) is engaged with the tooth profile on the right-end disk (1) and the tooth profile on the housing (3). The left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3) form a force closure mechanism. By means of the force closure mechanism formed by the left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3), the transmission device can automatically and steplessly adjust a transmission ratio and an output rotation speed according to a change in load without depending on a measurement and control system, and has a simple structure and low costs.

A vehicle powertrain may include a differential assembly having a housing disposed partially in a lubrication reservoir. The differential assembly translates rotational motion of a pinion gear to a pair of axle shafts extending from the housing and permits different rotational speeds of the axle shafts. One or more components of the differential assembly, e.g., one or more side gears, may include a plurality of radial grooves configured to distribute a lubricant from the lubrication reservoir while the first side gear rotates.

A vehicle powertrain may include a differential assembly having a housing disposed partially in a lubrication reservoir. The differential assembly translates rotational motion of a pinion gear to a pair of axle shafts extending from the housing and permits different rotational speeds of the axle shafts. One or more components of the differential assembly, e.g., one or more side gears, may include a plurality of radial grooves configured to distribute a lubricant from the lubrication reservoir while the first side gear rotates.

A drive system includes a prime mover that provides an input, and an output system that is driven by the input. A torque transfer system is coupled between the prime mover and the output system. The torque transfer system includes two gear planes. Each of the gear planes includes a pair of gear meshes, and each of the pair of gear meshes has a floating structure.

A drive system includes a prime mover that provides an input, and an output system that is driven by the input. A torque transfer system is coupled between the prime mover and the output system. The torque transfer system includes two gear planes. Each of the gear planes includes a pair of gear meshes, and each of the pair of gear meshes has a floating structure.