F16H39/00

Work vehicle
11607955 · 2023-03-21 · ·

A tractor according includes a running vehicle body, a floor provided on the running vehicle body and serving as a floor surface of an operation part in which a driver is located, a floor bracket configured to support the floor, a fuel tank provided below the floor, and a pedal configured to move the running vehicle body forward or backward and having pivot shafts provided on the floor bracket between the floor and the fuel tank.

Hydrostatic travel drive and method for controlling the hydrostatic travel drive

A hydrostatic travel drive includes a hydraulic pump for the purpose of supplying pressure medium to a hydraulic motor of the travel drive that can be coupled to an output, which pump can be coupled to a drive machine. The hydraulic pump has an actuating cylinder with at least one cylinder chamber and a swept volume which can be adjusted via the actuating cylinder, and at least one electrically activatable pressure valve via which the cylinder chamber can be charged with an adjustingly active actuating pressure. The travel drive further includes device via which a pressure of the hydraulic pump can be limited by means of influencing the actuating pressure.

Hydrostatic travel drive and method for controlling the hydrostatic travel drive

A hydrostatic travel drive includes a hydraulic pump for the purpose of supplying pressure medium to a hydraulic motor of the travel drive that can be coupled to an output, which pump can be coupled to a drive machine. The hydraulic pump has an actuating cylinder with at least one cylinder chamber and a swept volume which can be adjusted via the actuating cylinder, and at least one electrically activatable pressure valve via which the cylinder chamber can be charged with an adjustingly active actuating pressure. The travel drive further includes device via which a pressure of the hydraulic pump can be limited by means of influencing the actuating pressure.

HYDRO-MECHANICAL HYBRID TRANSMISSION DEVICE WITH TWO HYDRAULIC TRANSMISSION MECHANISMS

A hydro-mechanical hybrid transmission device with two hydraulic transmission mechanisms includes an input member, a second hydraulic transmission mechanism, a rear planetary gear mechanism, an output member, a first hydraulic transmission mechanism, a front planetary gear mechanism, a clutch assembly, and a brake assembly. The clutch assembly connects the input member to the front planetary gear mechanism, the second hydraulic transmission mechanism, and the first hydraulic transmission mechanism, connects an output end of the first hydraulic transmission mechanism to the front planetary gear mechanism, connects the rear planetary gear mechanism to an output end of the second hydraulic transmission mechanism and the front planetary gear mechanism, and connects the rear planetary gear mechanism to the output member. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member.

Control apparatus for vehicular drive system
09732834 · 2017-08-15 · ·

A control apparatus for a vehicular drive system provided with an automatic transmission constituting a part of a power transmitting path between an electric motor and drive wheels, and a fluid-operated power transmitting device provided between the electric motor and the automatic transmission and having an input rotary element connected to said electric motor, and an output rotary element connected to said automatic transmission, includes a warm-up control implementing portion configured to implement a stall control of said fluid-operated power transmitting device wherein the input rotary element of said fluid-operated power transmitting device is rotated by said electric motor while the fluid-operated power transmitting device is placed in a stalling state.

Control apparatus for vehicular drive system
09732834 · 2017-08-15 · ·

A control apparatus for a vehicular drive system provided with an automatic transmission constituting a part of a power transmitting path between an electric motor and drive wheels, and a fluid-operated power transmitting device provided between the electric motor and the automatic transmission and having an input rotary element connected to said electric motor, and an output rotary element connected to said automatic transmission, includes a warm-up control implementing portion configured to implement a stall control of said fluid-operated power transmitting device wherein the input rotary element of said fluid-operated power transmitting device is rotated by said electric motor while the fluid-operated power transmitting device is placed in a stalling state.

HYDRAULIC TRANSAXLE

A hydraulic transaxle comprises an axial piston hydraulic pump having a variable displacement, and a transaxle casing incorporating the hydraulic pump. The hydraulic pump includes a movable swash plate and a pair of trunnion shafts. The transaxle casing includes a pair of side walls, and includes a pair of casing holes each of which penetrates each of the side walls between an inside and an outside of the transaxle casing. The pair of trunnion shafts are passed through the respective casing holes. The swash plate is formed with a pair of swash plate holes in the respective side portions facing the respective side walls in the inside of the transaxle casing. Proximal end portions of the respective trunnion shafts are inserted into the respective swash plate holes. A distal end portion of one of the trunnion shafts projects from the corresponding casing hole to the outside of the transaxle casing.

Integrated motor and pump including axially placed coils

A pump includes a fluid inlet section, a fluid outlet section, a rotor axially between the fluid inlet section and the fluid outlet section, a center section radially inside of the rotor and a stator including electrical coils for generating electromagnetic flux for moving the rotor around the center section. The rotor and the center section define a fluid flow chamber radially therebetween. The rotor is rotatable about the center section by the electromagnetic flux generated by the electrical coils. An inlet control section is configured for regulating fluid flow from the fluid inlet section into the fluid flow chamber during rotation of the rotor inside of the stator about the center section. An outlet control section is configured for regulating fluid flow from the fluid flow chamber into the fluid outlet section during rotation of the rotor inside of the stator about the center section. The electrical coils are axially offset from the rotor.

Integrated motor and pump including axially placed coils

A pump includes a fluid inlet section, a fluid outlet section, a rotor axially between the fluid inlet section and the fluid outlet section, a center section radially inside of the rotor and a stator including electrical coils for generating electromagnetic flux for moving the rotor around the center section. The rotor and the center section define a fluid flow chamber radially therebetween. The rotor is rotatable about the center section by the electromagnetic flux generated by the electrical coils. An inlet control section is configured for regulating fluid flow from the fluid inlet section into the fluid flow chamber during rotation of the rotor inside of the stator about the center section. An outlet control section is configured for regulating fluid flow from the fluid flow chamber into the fluid outlet section during rotation of the rotor inside of the stator about the center section. The electrical coils are axially offset from the rotor.

MULTI-MODE HYDRO-MECHANICAL HYBRID TRANSMISSION DEVICE

A multi-mode hydro-mechanical hybrid transmission device includes an input member, a hydraulic transmission mechanism, a mechanical transmission mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input member to an input end of the hydraulic transmission mechanism, the mechanical transmission mechanism, and the convergence mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the convergence mechanism. The clutch assembly connects the mechanical transmission mechanism to the convergence mechanism. The convergence mechanism is connected to the output member. Continuously changing transmission ratios are provided between the input member and the output member by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake assembly.