A system and method for compensating reduced track speed because of engine droop for a work machine is disclosed. The system may comprise a frame, an attachment coupled to the frame, a ground-engaging mechanism adapted to support the frame, an engine, a motor, a track speed sensor, an engine speed sensor, and a controller. The engine may drive the ground-engaging mechanism and attachment. The engine may be coupled through a variable speed transmission to the ground-engaging mechanism and the attachment. They variable speed transmission may include a hydrostatic circuit. The controller may be adapted to send an increased transmission command signal based on a drop in the engine speed signal when the work machine engages an increased load. The increased transmission command signal may increase a motor speed to cause an increase in track speed to compensate at least a portion of the reduced track speed from the engine speed droop.

A transaxle with a brake includes an axle supported by the transaxle casing, a continuously variable transmission disposed in the transaxle casing, a braking device that is disposed in the transaxle casing and locks a rotation of the axle, a speed control arm that is journaled so as not to rotate relatively with respect to the transmission operating shaft of the transmission, controls the transmission, and is capable of changing a rotation of the axle continuously. A brake arm that is journaled with respect to an operating shaft of the braking device and a relay arm that is journaled so as to be relatively rotatable with respect to the transmission operating shaft are also included. The relay arm has one end connected to the brake arm via a link mechanism and the other end for lock operation input.

An electric drive assembly for operation with a component of a work vehicle having an SAE standard hydraulic pump/motor mount includes an electric machine having a shaft and a mounting flange. An adapter housing defines an interior space between a component mounting flange and an electric machine mounting flange. The electric machine mounting flange is sized and configured to mate with the mounting flange of the electric machine. The component mounting flange has a bolt hole pattern and a mounting pad each of a complementary size and configuration to that of the SAE standard hydraulic pump/motor mount. A gear set at least in part disposed in the interior space of the adapter housing is configured to effect a gear ratio change and transfer power between the shaft of the electric machine and a drive shaft.

In a self-propelled construction machine (1), in particular road milling machine, comprising a machine frame (8), at least three travelling devices (12, 16), wherein at least one of the three travelling devices (12, 16) is realized as a pivotable travelling device (16) so that said travelling device (16) is pivotable about at least one vertical pivoting axis in relation to the machine frame (8) between a first pivoted-in and at least one second pivoted-out position, at least one working device (20), in particular a milling drum, for working the ground pavement (3), at least one hydraulic drive system (70) for driving at least two travelling devices (12, 16), wherein at least one of the at least two driven travelling devices is the pivotable travelling device (16), wherein the hydraulic drive system (70) comprises at least one hydraulic pump (78), it is provided for the following features to be achieved: the hydraulic drive system (70) comprises one each hydraulic variable displacement motor (72) for driving the driven travelling devices (12) with the exception of the at least one pivotable travelling device (16), wherein the hydraulic drive system (70) comprises a hydraulic fixed displacement motor (74) for driving the at least one pivotable travelling device (16).

A propulsion control system includes a travel motor configured to be actuated to drive the track assembly in the forward and reverse travel directions; a propulsion control device actuated in first and second input directions; and a propulsion switching mechanism. In a first propulsion direction mode, when the control device is actuated in the first input direction, the travel motor is actuated to drive in the forward travel direction, and when the control device is actuated in the second input direction, the travel motor is actuated to drive in the reverse travel direction. In a second propulsion direction mode, when the control device is actuated in the first input direction, the travel motor is actuated to drive in the reverse travel direction, and when the control device is actuated in the second input direction, the travel motor is actuated to drive in the forward travel direction.

According to some embodiments of the disclosed subject matter, a ride-on mower can include a main frame, a side member pivotally connected to the main frame, and a transaxle. The transaxle can include a pump portion that has a pump housing fixed on the main frame and a fluid displacement structure located in the pump housing. The transaxle can further include a motor portion including a motor housing and a fluid driven structure located in the motor housing. The motor housing can be separate from the pump housing, and the motor housing can be carried on and movable with the side member. Tubing can interconnect the pump portion and the motor portion.

A truck or trailer includes a wheel, a stub axle spindle extending through the wheel and having a through bore, a step-up drive ratio unit inboard of said stub-axle spindle, an axle shaft extending through the through bore of the stub-axle spindle, and a power conversion unit operatively connected to the step-up drive ratio unit. The axle shaft is operatively connected to the step-up drive ratio unit, such that, as the axle shaft rotates with the wheel, mechanical energy from rotation of the axle shaft is converted into electrical energy. A special suspension system allows for installation of the stub axle spindle, and such suspension systems are a separate focus herein as well as being usable in combination with the power conversion elements.

The present invention concerns a hydraulic system comprising a hydraulic pump (130) installed on a truck tractor (10), a hydraulic pipe (160) connected to the outlet of the pump (130) and a connector (170) positioned at the outlet of the pipe (160) and designed to be connected to a complementary socket (180) provided on a trailer (20) in order to supply a ram (110) positioned on the trailer, for example for tipping purposes, characterised by the fact that it comprises a circuit selector (210) designed to connect said socket (180) selectively either to a ram (110) or a conduit (220) supplying a drive assistance circuit and an assistance circuit return conduit (250) designed to be connected to a tank (120) positioned on the truck tractor.

A drivetrain for a motor vehicle includes a prime mover including a rotatable power shaft, wherein the prime mover is configured to translate energy stored in a power source into rotational torque that is applied to the power shaft, a hydraulic drive unit including a hydraulic pump mechanically connected to the power shaft, a hydraulic motor fluidically connected to the hydraulic pump, and an output shaft mechanically connected to the hydraulic motor, and a transmission mechanically connected to the output shaft and configured to provide one or more gear reductions across the transmission.

An excavator includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, actuators configured to drive driven portions including the lower traveling body and the upper turning body, a power storage mounted on the upper turning body and used as an energy source for driving the actuators, a cooling circuit configured to cool the power storage, and a fan mounted on the upper turning body and configured to blow air to a radiator and a condenser for cooling the radiator and the condenser. Further, the power storage is arranged such that the power storage is apart from a path in which air outside the upper turning body, by an operation of the fan, is introduced into inside the upper turning body, passes across the heat exchanging device, and is discharged to the outside of the upper turning body.