A car having: a frame; two rear drive wheels; two rear suspensions, which support the two rear wheels; a drivetrain having two axle shafts, which transmit the motion to the rear drive wheels; a rear subframe, which is fixed to the frame in four fixing points through the interposition of elastic isolating elements, directly supports at least part of the drivetrain, and provides a coupling for the rear suspensions. The four fixing points are substantially arranged at the same vertical height. The frame has two “C”-shaped elements, each having its two ends in the area of two fixing points. Two stiffening beams are provided, each arranged longitudinally and screwed to the frame in the area of the ends of a corresponding “C”-shaped element.

A low-profile vehicle chassis comprising at least one chassis section comprising an upper side, a lower side spaced from the upper side and a cavity defined between the upper and lower sides of the chassis. At least one drivetrain and/or power component of the vehicle is contained within the cavity. Also, a vehicle comprising such a chassis. Also provided is a drivetrain module for an electric vehicle, the drivetrain module comprising a housing, at least one electric motor within the housing, a gearbox within the housing and having an input connected to the at least one electric motor to receive drive from the at least one electric motor, and at least one drive shaft connected to an output of the gearbox to transmit mechanical drive from the gearbox.

A gear arm assembly for a vehicle includes gear arm housing having a first end, a second end, and an intermediate portion, the gear arm housing from the intermediate portion to the first end defining a first arm segment, and the gear arm housing from the intermediate portion to the second end defining a second arm segment. The assembly further includes a plurality of gears meshed together in series and housed within the gear arm housing, the plurality of gears including an intermediate gear within the intermediate portion of the gear arm housing. The assembly further includes a first wheel hub connected to a first gear of the plurality of gears at the first end of the gear arm housing, and a second wheel hub connected to a second gear of the plurality of gears at the second end of the gear arm housing. The assembly further includes a primary drive shaft extending into the gear arm housing at the intermediate portion and configured to connect a drive input to the intermediate gear, a spindle housing configured to connect the gear arm assembly to the frame, and a spindle rotatably coupled to and within the spindle housing and configured to allow for rotation of the gear arm housing relative to the spindle housing.

A gear arm assembly for a vehicle includes gear arm housing having a first end, a second end, and an intermediate portion, the gear arm housing from the intermediate portion to the first end defining a first arm segment, and the gear arm housing from the intermediate portion to the second end defining a second arm segment. The assembly further includes a plurality of gears meshed together in series and housed within the gear arm housing, the plurality of gears including an intermediate gear within the intermediate portion of the gear arm housing. The assembly further includes a first wheel hub connected to a first gear of the plurality of gears at the first end of the gear arm housing, and a second wheel hub connected to a second gear of the plurality of gears at the second end of the gear arm housing. The assembly further includes a primary drive shaft extending into the gear arm housing at the intermediate portion and configured to connect a drive input to the intermediate gear, a spindle housing configured to connect the gear arm assembly to the frame, and a spindle rotatably coupled to and within the spindle housing and configured to allow for rotation of the gear arm housing relative to the spindle housing.

An axle assembly includes a first wheel connected in a rotationally fixed manner to a first wheel shaft with a wheel hub motor and a second wheel connected in a rotationally fixed manner to a second wheel shaft. The second wheel is coupled by a mechanical transmission mechanism in a driving manner to the wheel hub motor. The transmission mechanism has a transmission shaft unit which extends generally parallel to, but non-coaxially with the wheel shafts such that the transmission shaft unit is offset in the vehicle longitudinal direction from the wheel shafts and is coupled via coupling units in a force-transmitting manner on one hand to the wheel hub motor and on the other hand to the second wheel to provide drive force to both wheels from a single wheel hub motor at least partially containing within one of the wheel hubs.

A swing arm suspension for suspending a rear drive wheel in a three-wheeled electric vehicle has an adjustable arm which allows the tension on the drive belt to be easily adjusted for installing or removing the drive belt or adjusting tension for operation.

A swing arm suspension for suspending a rear drive wheel in a three-wheeled electric vehicle has an adjustable arm which allows the tension on the drive belt to be easily adjusted for installing or removing the drive belt or adjusting tension for operation.

A control method in a motor grader including a running wheel, an inclination mechanism which inclines the running wheel, an operation portion, and a sensor capable of detecting whether or not the running wheel is at an erect position includes outputting from a controller, a control signal for driving the inclination mechanism in response to an operation command in accordance with a state of operation onto the operation portion and stopping output of the control signal in response to the operation command when the sensor detects the erect position.

A control method in a motor grader including a running wheel, an inclination mechanism which inclines the running wheel, an operation portion, and a sensor capable of detecting whether or not the running wheel is at an erect position includes outputting from a controller, a control signal for driving the inclination mechanism in response to an operation command in accordance with a state of operation onto the operation portion and stopping output of the control signal in response to the operation command when the sensor detects the erect position.

An automatic torque transmission with one or more stages, where each stage has a number of available gear ratios. A planetary gear train includes a planet gear, a sun gear, and a ring gear. The planet gear is configured to drive the sun gear at higher speed and lower torque, and the ring gear at lower speed and higher torque. The sun gear is coupled to an input of a differential gear train. The ring gear is coupled to a different input of the differential gear train. A brake clutch can be selectively coupled to the ring gear, to provide selective braking of the ring gear so as to selectively transfer drive from the ring gear to the sun gear.