Abstract: Drivetrain systems and methods are provided. In one example, the drivetrain system includes an interaxle differential (IAD) configured to receive power from a prime mover, a motor configured to drive a planetary gearset, and a ball ramp actuator configured to selectively engage a plurality of plates in a clutch pack of a friction clutch in response to receiving rotational input from the planetary gearset. In an engaged configuration, the friction clutch prevents speed differentiation between a first IAD output and a second IAD output.

Abstract: Systems and methods for an interaxle differential (IAD). In one example, the IAD comprises a locking assembly that includes a friction clutch, the friction clutch includes a clutch pack that comprises plurality of plates configured to engage and disengage to inhibit and permit speed differentiation between a first axle differential and a second axle differential. The IAD further includes a supply lubrication passage that comprises an inlet that receives a lubricant from an enclosure surrounding an input gear of an axle differential and a first outlet flowing the lubricant to a gear coupled to the clutch pack.

Abstract: Systems and methods for an interaxle differential (IAD). In one example, the IAD comprises a locking assembly that includes a friction clutch, the friction clutch includes a clutch pack that comprises plurality of plates configured to engage and disengage to inhibit and permit speed differentiation between a first axle differential and a second axle differential. The IAD further includes a supply lubrication passage that comprises an inlet that receives a lubricant from an enclosure surrounding an input gear of an axle differential and a first outlet flowing the lubricant to a gear coupled to the clutch pack.

Abstract: Methods and systems are provided for an actuation system for a parking mechanism in a transmission system of a vehicle. In one example, a system may include a protrusion positioned at one end of a higher diameter portion of a cam, the protrusion positioned to contact a pawl upon engagement of the pawl with a parking gear.

Abstract: Systems and methods for an interaxle differential (IAD) are provided. In one example, the IAD comprises a locking assembly that includes a friction clutch, the friction clutch includes a clutch pack that comprises plurality of plates configured to engage and disengage to inhibit and permit speed differentiation between a first axle differential and a second axle differential. The IAD further includes a supply lubrication passage that comprises an inlet that receives a lubricant from an enclosure surrounding an input gear of an axle differential and a first outlet flowing the lubricant to a gear coupled to the clutch pack.

Abstract: 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.

Abstract: Drivetrain systems and methods are provided. In one example, the drivetrain system includes an interaxle differential (IAD) configured to receive power from a prime mover, a motor configured to drive a planetary gearset, and a ball ramp actuator configured to selectively engage a plurality of plates in a clutch pack of a friction clutch in response to receiving rotational input from the planetary gearset. In an engaged configuration, the friction clutch prevents speed differentiation between a first IAD output and a second IAD output.

Abstract: 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.

Abstract: 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.

Abstract: Drivetrain systems and methods are provided. In one example, the drivetrain system includes an interaxle differential (IAD) configured to receive power from a prime mover, a motor configured to drive a planetary gearset, and a ball ramp actuator configured to selectively engage a plurality of plates in a clutch pack of a friction clutch in response to receiving rotational input from the planetary gearset. In an engaged configuration, the friction clutch prevents speed differentiation between a first IAD output and a second IAD output.

Abstract: Methods and systems are provided for an actuation system for a parking mechanism in a transmission system of a vehicle. In one example, a system may include a protrusion positioned at one end of a higher diameter portion of a cam, the protrusion positioned to contact a pawl upon engagement of the pawl with a parking gear.

Abstract: A parking mechanism for use in a vehicle and method of operation thereof. The parking mechanism includes one or more actuation mechanisms, a parking pawl and a parking gear. At least a portion of the one or more actuation mechanisms are drivingly connected to at least a portion of a cam. The parking pawl has one or more parking pawl teeth extending therefrom that are selectively engagable with at least a portion of one or more parking gear teeth extending from an outer surface of a body portion of the parking gear. The parking pawl also includes a parking pawl pin aperture having a size and shape needed to receive and/or retain at least a portion of a parking pawl pin therein.

Abstract: Systems and methods for an interaxle differential (IAD) are provided. In one example, the IAD comprises a locking assembly that includes a friction clutch, the friction clutch includes a clutch pack that comprises plurality of plates configured to engage and disengage to inhibit and permit speed differentiation between a first axle differential and a second axle differential. The IAD further includes a supply lubrication passage that comprises an inlet that receives a lubricant from an enclosure surrounding an input gear of an axle differential and a first outlet flowing the lubricant to a gear coupled to the clutch pack.

Abstract: Drivetrain systems and methods are provided. In one example, the drivetrain system includes an interaxle differential (IAD) configured to receive power from a prime mover, a motor configured to drive a planetary gearset, and a ball ramp actuator configured to selectively engage a plurality of plates in a clutch pack of a friction clutch in response to receiving rotational input from the planetary gearset. In an engaged configuration, the friction clutch prevents speed differentiation between a first IAD output and a second IAD output.

Abstract: A parking mechanism for use in a vehicle and method of operation thereof. The parking mechanism includes one or more actuation mechanisms, a parking pawl and a parking gear. At least a portion of the one or more actuation mechanisms are drivingly connected to at least a portion of a cam. The parking pawl has one or more parking pawl teeth extending therefrom that are selectively engagable with at least a portion of one or more parking gear teeth extending from an outer surface of a body portion of the parking gear. The parking pawl also includes a parking pawl pin aperture having a size and shape needed to receive and/or retain at least a portion of a parking pawl pin therein.

Abstract: A wheel speed sensor system for determining the rotational speed of the wheels mounted at the opposite ends of an axle without requiring wheel speed sensor assemblies for each wheel shaft axle. As a result, the speed sensor system of the present disclosure can be housed in small sized or small capacity axle housing such as banjo type housings. In one embodiment, a wheel speed sensor assembly is positioned in the axle housing to determine the speed of one of the wheel axle shafts and a differential speed sensor assembly is positioned in the axle housing to determine the rotational speed of the differential. With these two speed measurements the rotational speed of the other wheel axle shaft can be calculated by a control unit. The wheel and differential speed sensor assemblies can each include a toothed or slotted ring or disk and sensor for sensing the teeth.

Abstract: A rotary joint assembly including a rotating portion. The rotating portion includes an annular body and a pair of annular sealing members. Each annular sealing member of the pair of annular sealing members is attached to a side of the annular body. An air passageway is formed in the annular body. The rotary joint assembly also includes a non-rotating portion. The non-rotating portion has a non-rotating portion air passageway formed therein. The non-rotating portion air passageway is in fluid communication with the air passageway formed in the annular body. A pair of annular air seal members are provided between the rotating portion and the non-rotating portion. Each annular air seal member of the pair of annular air seal members contacts a sealing surface of one of the annular seal members to provide a seal around an interface between the air passageway formed in the annular body and the non-rotating portion air passageway.

Abstract: A hub assembly for a tire inflation system includes a hub configured to hold a wheel assembly. The hub has a hub conduit formed therethrough. The hub conduit has an inlet formed in an inner surface of the hub and an outlet formed adjacent an outboard end of the hub. A vent is formed in the hub. The vent includes one or more vent conduits which extend from the inner surface to an outer surface of the hub.

Abstract: A wheel speed sensor system for determining the rotational speed of the wheels mounted at the opposite ends of an axle without requiring wheel speed sensor assemblies for each wheel shaft axle. As a result, the speed sensor system of the present disclosure can be housed in small sized or small capacity axle housing such as banjo type housings. In one embodiment, a wheel speed sensor assembly is positioned in the axle housing to determine the speed of one of the wheel axle shafts and a differential speed sensor assembly is positioned in the axle housing to determine the rotational speed of the differential. With these two speed measurements the rotational speed of the other wheel axle shaft can be calculated by a control unit. The wheel and differential speed sensor assemblies can each include a toothed or slotted ring or disk and sensor for sensing the teeth.

Abstract: The present invention provides an improved inter-axle differential assembly to limit axle tire slip by limiting the excessive inter-axle differentiation between front and rear axles in a tandem axle set. The present invention provides an inter-axle differential assembly comprising a differential case including a cylindrical housing, an annular axial end surface connected to the cylindrical housing, an end cover plate wherein the annular axial end surface and the end cover plate include openings for receiving coaxial input and output shafts, a hollow chamber defined by the cylindrical housing, the annular axial end surface, and the end cover plate which houses differential gear assembly, and an unitary gear set extending continuously in the radial direction from the cylindrical housing.