Abstract: A fluid temperature adjustment device that includes a circulation flow path that circulates the cooling water in one direction between the engine and the radiator; a first flow path branched from the circulation flow path at a location downstream of the engine and upstream of the radiator; a second flow path branched from the circulation flow path at a location downstream of the radiator and upstream of the engine; a third flow path that communicates with a cooling water outlet of the heat exchanger and that is merged with the circulation flow path at a location downstream of the radiator and upstream of the engine; and a switching valve that selectively communicates between one of the first and second flow paths and a cooling water inlet of the heat exchanger.

Abstract: A hydraulic clutch includes a clutch drum with an outer cylinder that slidably holds a plurality of clutch plates, an inner cylinder that axially extends from an inner circumference of a sidewall, and a sleeve fitted inside the inner cylinder. A clutch piston presses the clutch plates. A plate and the clutch piston define an oil chamber that cancels centrifugal hydraulic pressure. An oil passage that communicates with the oil chamber is on an inner circumferential surface of the inner cylinder. One surface of the sleeve contacts a step formed on the inner cylinder. The sleeve includes a passage in communication with the oil passage and formed on an outer periphery of the sleeve to axially extend toward the end surface, and a second passage formed more axially recessed than an end surface and radially extending to provide communication between the first passage and an inner portion of the sleeve.

Abstract: A vehicle transmission including a rotatable input shaft connected to a driving source; a countershaft parallel to the input shaft; a differential unit below the countershaft, to which rotation is input from the countershaft, and coupled to right and left wheels; a case member containing the input shaft, countershaft, and the differential unit; a differential chamber disposed in the case member, contains the differential unit, and is separated from an oil storage chamber; and a differential separation member separating the differential chamber from the storage chamber, and formed along the differential unit ring gear, which meshes with an output gear of the countershaft.

Abstract: A hydraulic clutch includes a clutch drum with an outer cylinder that slidably holds a plurality of clutch plates, an inner cylinder that axially extends from an inner circumference of a sidewall, and a sleeve fitted inside the inner cylinder. A clutch piston presses the clutch plates. A plate and the clutch piston define an oil chamber that cancels centrifugal hydraulic pressure. An oil passage that communicates with the oil chamber is on an inner circumferential surface of the inner cylinder. One surface of the sleeve contacts a step formed on the inner cylinder. The sleeve includes a passage in communication with the oil passage and formed on an outer periphery of the sleeve to axially extend toward the end surface, and a second passage formed more axially recessed than an end surface and radially extending to provide communication between the first passage and an inner portion of the sleeve.

Abstract: A vehicle transmission including a rotatable input shaft connected to a driving source; a countershaft parallel to the input shaft; a differential unit below the countershaft, to which rotation is input from the countershaft, and coupled to right and left wheels; a case member containing the input shaft, countershaft, and the differential unit; a differential chamber disposed in the case member, contains the differential unit, and is separated from an oil storage chamber; and a differential separation member separating the differential chamber from the storage chamber, and formed along the differential unit ring gear, which meshes with an output gear of the countershaft.