Honda Motor Co., Ltd.

Kabushiki Kaisha F. C. C.

Shinya Nishiyama

Dai Arai

Naoki Sakamoto

Hiroyuki Uchida

Tomohiro Fuse

Takayuki Suzuki

Toshimasa Mitsubori

Yusuke Funayose

Naoki Kobayashi

Kaoru Aono

Masaki Yamazaki

Scott Daniel Batdorf

Masataka Murai

Yukihiro Tsubakino

Shinichiro Keyaki

Koichi Tsutsumi

Shuichi Ochiai

Katsuhiro Nakamichi

A basic pulse time setting section determines a basic pulse time for initial invalid stroke elimination by applying current values of oil temperature and throttle opening to the basic pulse time map. A subtraction time setting section determines a subtraction time by applying current values of oil temperature and clutch oil pressure to the subtraction time map. A pulse time determining section determines a predetermined initial invalid stroke elimination pulse time by subtracting the subtraction time from the basic pulse time. An initial invalid stroke elimination permission/inhibition determination section, at a starting timing of initial invalid stroke elimination, inhibits this-time initial invalid stroke elimination if the elapsed time from the execution timing of the preceding initial invalid stroke elimination is within the predetermined inhibition period.

Clutch control device

A basic clutch capacity calculating unit calculates a clutch capacity of the DCT applying an engine speed, a degree of throttle opening, and a front wheel vehicle speed to a map. The basic clutch capacity calculating unit further calculates the DCT basic clutch capacity by amending the basic clutch capacity based on an oil temperature and a water temperature. An NE converted value calculating unit calculates an NE converted value obtained by converting a vehicle speed into an engine speed with the front wheel vehicle speed and a DCT speed change stage as input parameters. A hunting detecting unit detects hunting by comparing the engine speed with the NE converted value when a throttle operation is detected. A DCT clutch capacity correcting unit makes decreasing correction of a DCT clutch capacity when hunting is detected for suppressing the hunting.

Hunting control device for vehicle with DCT transmission

A powertrain structure includes a drive shaft and a driven shaft disposed coaxially, with end surfaces opposed to each other, and a torque damper interposed between the shafts and having half bodies fitted to a shaft end parts of the drive and driven shafts, with the half bodies joined together by engagement of opposed, outer circumferential end surfaces thereof and a damper spring interposed therebetween such that it straddles drive-side and driven-side spring recesses respectively formed in the opposed surfaces of the half bodies. One of two fitting parts provided between the half bodies and the respective shafts has a smaller clearance and the other has an larger clearance in the radial direction of the shafts.

Powertrain structure including torque damper disposed between drive and driven shafts

A power transmission device includes an input rotary member having a pressing portion, and an output rotary member having a receiving portion to be pressed by the pressing portion. The input rotary member forces the output rotary member to rotate when resilient members disposed between the input rotary member and the output rotary member are deformed by predetermined amounts.

Power transmission device

An internal combustion engine in which it can be made difficult for bubbles to mix into oil in a flowing-down process of the oil. In a generator chamber, a shielding rib is provided which is disposed between a generator and an oil introduction port in side view and which extends skewly upwardly from the oil introduction port in a manner so as to cover one end side of the oil introduction port. A guide rib extends from a side wall of the generator chamber in the manner of covering the other end side of the oil introduction port.

Internal combustion engine

The present invention relates to a mounting structure for mounting firmly onto a rotating shaft a rotational force transmission member such as a chain sprocket, a gear, a belt pulley and the like. A drive sprocket as a rotational force transmission member is fitted into an end of the rotating shaft in a splined manner. A coned disc spring and a washer are positioned in sequence onto an outer face of the rotational force transmission member. The coned disc spring and the washer are supported and sandwiched by the screw fastening member to be screwed to an end of the rotating shaft and the rotational force transmission member.

Rotational force transmission member mounting structure

A chain guide for guiding a chain includes a chain passage formed by an outer side wall and an inner side wall for surrounding the chain passage. A front end portion of the inner side wall is retracted to and is positioned at a rear side of a vehicle body than a front end portion of the outer side wall. Guide ribs are formed on an upper wall and a bottom wall and are brought into sliding contact with upper and lower sides of the chain. A discharge recessed portion which is opened frontwardly from the front end portion is formed in the inner side wall, wherein the chain passage is in communication with the outside through the discharge recessed portion. Mud or the like which is carried into an inlet falls in the inside of a vehicle body disposed outside the chain guide from the discharge recessed portion

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Wako, Japan

Shinya Nishiyama