A hydraulic system of vehicle transmission device is provided. A heat exchanger configured downstream is used to cool working oil discharged from a torque converter, and the working oil is supplied, as lubricating oil, to a lubricating system hydraulic circuit. On the other hand, excess oil flowing out of a regulator valve for regulating line pressure returns to an input side of an oil pump through a recycle oil path. A bypass oil path is disposed in a manner of branching from the recycle oil path and connecting to an input side of the heat exchanger. A control mechanism is disposed, and when hydraulic pressure at the side of the recycle oil path is higher than that at the side of the heat exchanger, the bypass oil path is opened to guide oil at the side of the recycle oil path to the input side of the heat exchanger.

A plurality of electrical connection structures are provided. Each of the electrical connection structures includes a plurality of electrical wires each having a wiring portion and an electrical connection portion directly or indirectly electrically connected to an electromagnetic valve (a control unit) at an end of the wiring portion, and wiring plates on which wiring portions are arranged. Between the electrical connection structures disposed next to each other, another end of the wiring portion of the electrical connection structure establishes an electrical connection relation with the another end of the wiring portion of the electrical connection structure. Between the electrical connection structures disposed next to each other, a movable portion capable of changing a relative positional relation therebetween is provided.

A connector module includes an electrical connection structure including: a plurality of electrical wires; and a wiring plate on which the electrical wires are wired. Each of the electrical wires is coated with an insulating coating, and includes: a wiring portion wired on the wiring plate; and an electrical connection portion to be physically and electrically connected to a counterpart electrical connection portion. The wiring plate includes a surrounded recess-shaped portion. The electrical connection portion and the counterpart electrical connection portion are arranged in the recess-shaped portion and are formed such that a physical and electrical connection part thereof is housed in the recess-shaped portion. The connection part is covered with an insulating member.

A hydraulic pressure supply system of an automatic transmission includes: a first hydraulic pump forming a first hydraulic pressure from a hydraulic fluid stored in an oil pan; a second hydraulic pump pressurizing a received hydraulic pressure to a higher pressure, where the received hydraulic pressure may be received from the first hydraulic pump and from the oil pan; a regulator valve which is disposed at an upstream side of a low pressure portion and regulates hydraulic pressures supplied from the first and second hydraulic pumps so as to supply the regulated pressure to the low pressure portion; and a plurality of hydraulic lines that supplies the hydraulic pressure of the first hydraulic pump to the regulator valve and a high pressure portion and supplies the hydraulic pressure of the second hydraulic pump to the high pressure portion and the regulator valve.

An additive manufactured (AM) hydraulic control assembly includes an AM housing having a tubular wall defining a bore configured to receive at least one of a hydraulic valve and an accumulator, and a retainer clip configured to selectively secure to the AM housing such that the retainer clip is movable between a secured position that extends across at least a portion of the bore to retain the hydraulic valve or accumulator within the AM housing, and an unsecured position that enables the hydraulic valve or accumulator to be inserted into or removed from the bore.

An additive manufactured (AM) hydraulic control assembly includes a first AM hydraulic passage having a first tubular wall defining a first fluid passage, a second AM hydraulic passage integrally formed with the first AM hydraulic passage and having a second tubular wall defining a second fluid passage, and an AM wall integrally formed with the first and second AM hydraulic passages and fluidly separating the first and second fluid passages. At least one of (i) a hydraulic control orifice is formed in the AM wall and configured to regulate fluid flow and pressure between the first and second fluid passages, and (ii) a ball seat is formed in the AM wall and a check ball is disposed in one of the first and second fluid passages and configured to selectively seal against the ball seat to facilitate preventing fluid flow therethrough.

A working machine includes a traveling device to change a traveling speed in accordance with a flow rate of an operation fluid, a traveling operation device to change the flow rate of the operation fluid to be supplied to the traveling device, and a switching operation portion to change, at multiple steps, a supply amount of the operation fluid to be supplied to the traveling device, the supply amount corresponding to an operation extent of the traveling operation device.

A valve assembly for use in an actuation assembly, with the actuation assembly including an actuation housing, includes a valve support adapted to be coupled to the actuation housing. The valve support has a body portion defining a plurality of solenoid bores. The valve assembly also includes a plurality of solenoids with each one of the plurality of solenoids disposed within a corresponding one of the plurality of solenoid bores and directly mounted to the valve support for controlling a flow of fluid. The valve assembly further includes an electrical power distribution device at least partially coupled to the valve support and connected to each of the plurality of solenoids. The valve assembly also includes a tray coupled to the body portion of the valve support to support a portion of the electrical power distribution device.

A hydraulic mechanical transmission includes a first hydraulic unit having a first shaft and a second hydraulic unit having a second shaft. The second hydraulic unit is connected in hydraulic fluid communication with the first hydraulic unit by high and low pressure lines. At least one of the first and second hydraulic units has variable displacement. A mechanical torque transfer arrangement transfers torque between the first shaft and the rotatable component of the second hydraulic unit. One of the first and second hydraulic units operates as a hydraulic pump and the other of the first and second hydraulic units operates as a hydraulic motor.

The control valve assembly is provided with a reinforcing portion straddling a drain port, the drain port allowing communication between an inside and an outside of the control valve assembly. The reinforcing portion is provided along a bore in which a spool of the control valve for control is housed. The control valve for control is a pressure regulator vale regulating a line pressure, the line pressure being a primary pressure of a hydraulic oil of the automatic transmission.