Honda Motor Co., Ltd.

Nikon Corporation

Honda Giken Kogyo Kabushiki Kaisha

Dai Arai

Hiroaki Takaiwa

Hideaki Hara

Toshimasa Mitsubori

Naoki Sakamoto

Masataka Tanaka

Naoki Kobayashi

Shinya Nishiyama

Kosaku Takahashi

Yasushi Fujimoto

Hiroyuki Kojima

Yoshiaki Nedachi

Katsuhiko Ito

Takashi Tetsuka

Takashi Yoshida

Junya Watanabe

Asuka Ito

Atsushi Chiba

Takashi Hotei

Yasuhiro Nozaki

Shinji Misawa

Yohei Endo

Hayato Yoshida

Tetsuharu Komatsu

Jun Watari

Soichi Owa

Masanori Nakamura

Nobutaka Magome

Kinya Mizuno

Akio Handa

Naoyuki Kobayashi

Eiji Kittaka

Takeshi Kobayashi

Shigeru Tajima

Hiroatsu Inui

Kazuhiro Yasuda

Masahiko Tsuchiya

Masahiro Nei

Kazuyuki Fukaya

Hiroshi Sotani

Masaki Yamazaki

Hiromi Suzuki

Satoru Nojima

Takumi Makabe

Takao Kochi

Keita Yagi

Hiroshi Kurata

Naoki Nozaki

Takuya Tagami

Koji Sato

Kenji Matsuo

Takeyuki Kariyasu

Yukio Yokogawa

Tomomi Kousaka

Eiichi Suzuki

Junya Niwa

Takuma Shiouchi

Kenichi Tamura

Kazuhide Ito

Naohide Hata

Endo Yohei

Yasushi Fumimoto

A control value is corrected and learned based on a difference angle Δφ between a drum shaft conversion spindle integration angle φs obtained by converting a detected spindle angle detected by a spindle angle sensorinto a drum angle and a detected drum angle φd detected by a drum angle sensor, over a predetermined learning time T from when the shift motoris driven, and a drive engagement portionof a shift driven gearreduces the play angle to abut on a driven engagement portionof a drum centerto accompany the driven engagement portion. In this manner, rotation of a shift drumcan be accurately controlled by the shift motor, while the number of components of a variable speed drive mechanismis reduced.

Transmission apparatus

A motorcycle includes a transmission, a first measuring unit, a second measuring unit, and a controller. The transmission is configured to automatically shift gears between a driving shaft and a driven shaft to transmit power from the driving shaft to the driven shaft. The first measuring unit is configured to measure the magnitude of a roll angle of a vehicle body. The second measuring unit is configured to measure the angular velocity of the roll angle of the vehicle body. The controller is configured to inhibit the transmission from shifting gears, based on the magnitude and the angular velocity of the roll angle. This configuration provides a motorcycle that enables gear shift control with more detailed response to a situation of a vehicle body.

Motorcycle

A power transmission apparatus includes a shift drum, a clutch, a clutch lifter, and a transmission body. The shift drum makes a dowel be extracted/inserted between a shifter and a shift gear. The clutch has first friction plates and second friction plates. The first friction plates rotate around a main shaft by receiving power from a crankshaft. The second friction plates are disposed alternately with the first friction plates and are relatively non-rotatably supported by the main shaft. The clutch lifter is displaced between a connection position at which power is transmitted by the clutch and a disconnection position at which the transmission of the power is disconnected. The transmission body transmits a driving force to the shift drum while the clutch lifter moves from the connection position to the disconnection position, in accordance with rotation of a shift spindle that rotates in accordance with a driving force.

Power transmission apparatus

In a vehicle cam damper structure, a drive shaft includes a cam damper at a midway portion thereof. The cam damper integrates a cam reception portion with a cam via a shaft member. The cam reception portion is connected relatively rotatably with the shaft member. The cam and the shaft member, while being integrally rotatable, are connected with each other axially slidably. The shaft member includes an enlarged-diameter portion. An elastic member that presses the cam toward a side of the cam reception portion is disposed between the enlarged-diameter portion and the cam. An outer cylinder extends across the cam reception portion and the shaft member. A drive-side shaft and a driven-side shaft of the drive shaft are each connected with corresponding one of the cam reception portion and the shaft member.

Vehicle cam damper structure

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 gear position detecting device includes a rotation angle sensor for detecting a turn position of a shift drum and a position sensor for detecting that the shift drum is at a neutral position. The rotation angle sensor is a volume sensor that linearly increases or decreases an output voltage according to a turning motion of the shift drum. The neutral position is set in such a way as not to overlap a dead zone. It is determined according to an output signal of the rotation angle sensor and an output signal of the position sensor whether the shift drum is at a reverse gear position located between the neutral position and the dead zone or a fifth gear position turned by 360 degrees from the reverse gear position. Such detecting device detects a gear position with a high accuracy even if the number of gear positions are increased.

Gear position detecting 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

An engine output control device controls engine output at a time of a downshift speed change of a transmission. The engine output control device includes: engine speed detecting means for detecting an actual engine speed NeJ of a crankshaft; and engine output adjusting means capable of adjusting the engine output according to an operation of a rider. The smaller of a requested engine output PA calculated on a basis of the actual engine speed NeJ and a rider requested engine output PB adjusted by the engine output adjusting means is output as the engine output.

Engine output control device

In a rough terrain vehicle, at a time of preparing to start movement, in a case that a left paddle switch and a right paddle switch are operated together with an accelerator pedal, an ECU disengages a clutch of an automatic transmission, and causes an output of an engine to increase. On the other hand, at a time of starting movement, in a case that the left paddle switch and the right paddle switch are returned to their initial positions, the ECU engages the clutch and transmits the output of the engine from the engine to vehicle wheels via the automatic transmission, to thereby rapidly start movement of the rough terrain vehicle.

Rough terrain vehicle

A clutch hydraulic pressure control circuit includes: a shift valve for switching the destination to feed hydraulic pressure to a first hydraulic clutch or a second hydraulic clutch; and first and second shift solenoid valves operating synchronously to actuate the shift valve. The two shift solenoid valves include a holding valve for keeping hydraulic pressure fed to the shift valve even when hydraulic pressure supply through one of the first and second shift solenoid valves happens to be shut off while hydraulic pressure is fed through the first and second shift solenoid valves to paths between the shift valve and the shift solenoid valves, or when hydraulic pressure supply through one of the first and second shift solenoid valves happens to occur while no hydraulic pressure is fed through the shift solenoid valves.

Clutch hydraulic pressure control circuit

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 liquid immersion exposure apparatus includes a projection system having a last optical element, a liquid supply system having a first path through which immersion liquid is supplied to a supply opening, and a liquid removal system having a second path connected to the first path. The liquid removal system removes the immersion liquid from the first path using the second path so that the supply flow path becomes a substantially gas filled space.

Liquid recovery apparatus, exposure apparatus, exposure method, and device manufacturing method

An exposure apparatus can mitigate the impact of fluctuations in the refractive index of ambient gas, and improve, for example, stage positioning accuracy. An exposure apparatus radiates an exposure illumination light to a wafer on a wafer stage through a projection optical system, and forms a prescribed pattern on the wafer, and comprises: a scale, which is provided to the wafer stage; a plurality of X heads, which detect information related to the position of the scale; a measurement frame that integrally supports the plurality of X heads and has a coefficient of linear thermal expansion that is smaller than that of the main body of the wafer stage (portions excepting a plate wherein the scale is formed); and a control apparatus that derives information related to the displacement of the wafer stage based on the detection results of the plurality of X heads.

Measuring method, stage apparatus, and exposure apparatus

A shift position detecting device where a shift position determining member is provided for determining a shift position based on a combination of switching modes of three switches corresponding to at least one of a plurality of projection rows each having a plurality of projection portions in a one-by-one basis, and '1, 1, 1' indicative of an ON state of each switch is allocated as a detection logic at a neutral position arranged between a first speed position and a second speed position, wherein a change in friction at the time of a shift operational to the neutral position is alleviated thus giving an operational feeling with no discomfort to a rider. Two projection rows that are objects to be detected by two specified switches among the three switches are formed so as to change switching modes of the specified switches from an OFF state to an ON state.

Shift position detecting device

A control device of a vehicle has a hill ascent angle update determiner, a slope estimator, a deceleration determiner, and a hill ascent angle estimator. The deceleration determiner determines that a vehicle is in a deceleration state when the throttle opening is equal to or lower than a threshold. The hill ascent angle update determiner prohibits update processing of an estimated hill ascent angle in the increase direction by the hill ascent angle estimator if the slope estimator estimates that a road surface has an upward slope and the deceleration determiner determines that the vehicle is in the deceleration state.

Control device for vehicle

Growing community of inventors

Wako, Japan

Dai Arai