Provided is a thermostatic valve including a first valve body, a second valve body, a third valve body, a first thermal actuator, a second thermal actuator, a valve core, a first valve port, a second valve port and a third valve port. The first valve body includes a second cavity and a third cavity. The second thermal actuator is sealedly fixed in the first valve body to isolate the second cavity from the third cavity. At least a part of the valve core is located in the second cavity. The valve core is connected to, or is integrated with, or abuts against a second valve stem of the second thermal actuator. The second thermal actuator is configured to act in response to a change in temperature of a fluid in the third cavity. The valve core is configured to open the second valve port or the third valve port in response to an action of the second valve stem.

The present invention relates to an oil cooling apparatus for hydrostatic transmissions that includes a cooling main body coupled to a transmission case in which a hydrostatic transmission is installed; an accommodating groove formed in the cooling main body to accommodate oil; a cover unit coupled to the cooling main body to cover the accommodating groove; a supply port configured to supply the oil to the accommodating groove; a discharge port configured to discharge the oil from the accommodating groove; a plurality of guide ribs installed at positions spaced apart from each other to guide a flow direction of oil flowing along a flow path formed in the accommodating groove; a first hurdle unit coupled to at least one of the guide ribs to form a first flow region through which the oil passes; and a second hurdle unit coupled to at least one of the guide ribs to form a second flow region through which the oil passes.

A valve apparatus for a vehicle includes a housing having open and closed ends to form an interior space, and formed with first and second intake ports receiving a transmission fluid from a transmission and an oil cooler, a bypass port bypassing the transmission fluid to the transmission, and an exhaust port exhausting the transmission fluid to the oil cooler, an inner cap inserted at least partially into the interior space, fixed to the housing, and having an open hole inserted into the interior space, an operation unit disposed between the inner cap and the closed end of the housing, and reciprocally moves according to a transmission fluid temperature, a valve unit disposed in the operation unit to selectively open and close the bypass port and the exhaust port depending on a movement of the operation unit; and an elastic member interposed between the inner cap and the operation unit.

Processing circuitry of an in-vehicle cooling system regulates the flow rate of the coolant passing through a radiator, thereby regulating the coolant temperature to a target coolant temperature. The processing circuitry sets the target coolant temperature to a specified standard target coolant temperature when the engine is not operating in a specified temperature increase permitting range, and sets the target coolant temperature to a high target coolant temperature, which is higher than the standard target coolant temperature, when the engine is operating in the temperature increase permitting range. The processing circuitry changes the target coolant temperature in the temperature increase permitting range to a temperature lower than the high target coolant temperature and higher than or equal to the standard target coolant temperature, when the hydraulic oil temperature is higher than or equal to a specified temperature increase suppressing temperature.

The invention concerns a method for controlling a mechanism (10) displaying asymmetrical behaviour, the mechanism (10) comprising a first operating direction (F+) and a second operating direction (F−), the control method making it possible to generate, using a control module (24) of a computer (20), a control signal (x_com) from a setpoint signal (x_cons), in which—when the setpoint signal (x_cons) indicates that the mechanism (10) should be operated in the first direction (F+), the control module (24) applies a first corrector (100) to the setpoint signal (x_cons) in order to generate a control signal (x_com),—when the setpoint signal (x_cons) indicates that the mechanism (10) should be operated in the second direction (F−), the control module (24) applies a second corrector (100) to the setpoint signal (x_cons) in order to generate a control signal (x_com), and in which the first and second correctors (100, 200) have different parameters (Kp1, Kp2, Ti1, Ti2), in order to compensate for the asymmetrical behaviour of the mechanism (10).

An object of the present invention is to appropriately control cooling water and oil according to situations. A computing device controls a flow rate of cooling water supplied to a motor and an oil pump that supplies oil from a gear box attached to the motor to a coil of the motor. The computing device suppresses the flow rate of the cooling water supplied to the motor when a temperature of oil in the gear box is less than a first threshold, and a temperature of the coil is less than a second threshold, and operates the oil pump.

Embodiments of a cold start lubricant distribution system include a lubricant distribution circuit, which fluidly interconnects first and second actively-lubricated work vehicle assemblies onboard a work vehicle. A flow divider section is included in the lubricant distribution circuit and through which lubricant flow is apportioned between the first and second actively-lubricated work vehicle assemblies. A lubricant supply pump is further located in the lubricant distribution circuit upstream of the flow divider section. The cold start lubricant distribution system further includes a lubricant flow modification assembly operably in a cold start mode. When operating in the cold start mode, the lubricant flow modification assembly reduces a volume of lubricant flow supplied to the first actively-lubricated work vehicle assembly through the flow divider section relative to a volume of lubricant flow supplied to the second actively-lubricated work vehicle assembly through the flow divider section.

A vehicle drive device includes: a rotary electric machine; a drive transmission mechanism provided in a power transmission path connecting a rotor shaft of the rotary electric machine and a wheel; a first hydraulic pump driven by a driving force transmitted through the power transmission path; a second hydraulic pump driven by a driving force source independent of the power transmission path; a first oil passage that supplies oil discharged from the first hydraulic pump to a rotor bearing that supports the rotor shaft such that the rotor shaft is rotatable; and a second oil passage that supplies oil discharged from the second hydraulic pump to an inner peripheral surface of the rotor shaft.

A speed reducer according to the present invention includes: at least one gear member for changing a speed of rotations input from a rotary device and outputting the rotations; a case housing the gear member; and a heating unit provided on the case and configured to heat the case or an inside of the case.

A vehicle includes: an interrupter including a first connector connected to a driving source, a second connector connected to a transmission, and a fluid in a gap between the first and second connectors; and processing circuitry. The processing circuitry receives flowability information indicating a value related to flowability of the fluid. The processing circuitry determines whether or not a predetermined power interruption condition is satisfied. When the above condition is satisfied, and the processing circuitry determines that the value is less than a predetermined reference value, the processing circuitry controls the speed change actuator to set the transmission to a first gear stage. When the condition is satisfied, and the processing circuitry determines that the value is not less than the reference value, the processing circuitry controls the speed change actuator to set the transmission to a second gear stage having a lower reduction ratio than the first gear stage.