Yamaha Hatsudoki Kabushiki Kaisha

Yasunobu Harazono

Nobuo Hara

Masashi Matsuo

Satoshi Ishikawa

Hiromi Fukuda

Manabu Fujito

Shigeru Fujii

Ikuo Nakamura

Tomoya Yabuzaki

Masatomo Kanehara

A leaning vehicle includes an actuator control unit that causes an actuator to generate an actuator torque in a counterclockwise direction based on a bar-handle-rotation-moment change amount in the case where a bar-handle-rotation-moment change amount in the counterclockwise direction is generated by a rider performing one operation of a right-grip-pushing-force increasing operation, a left-grip-pulling-force increasing operation, a right-grip-pulling-force reducing operation, and a left-grip-pushing-force reducing operation. The actuator control unit causes the actuator to generate an actuator torque in a clockwise direction based on a bar-handle-rotation-moment change amount in the case where a bar-handle-rotation-moment change amount in the clockwise direction is generated by a rider performing one operation of a left-grip-pushing-force increasing operation, a right-grip-pulling-force increasing operation, a left-grip-pulling-force reducing operation, and a right-grip-pushing-force reducing operation.

Leaning vehicle

A steering damper is configured to adjust a damping force of a rotor covered by a lower casing and an upper casing by changing the viscosity of a magnetic fluid with an electromagnet. Since a magnetic fluid chamber is provided with a volume compensating unit, even when the volume of the magnetic fluid expands, or air entrainment occurs, air bubbles lighter than the magnetic fluid are collected in the volume compensating unit. Thus, characteristic variations of the steering damper due to volume expansion or air entrainment of the magnetic fluid are prevented.

Steering damper, a saddle riding type vehicle having the same, and a method of manufacturing the same

A steering damper control apparatus includes an MR damper having an adjustable steering damping force, a suspension pressure sensor that detects a pressure of a front suspension, a command value output unit that determines a damping force command value according to a pressure change rate of the front suspension based on a detection result of the suspension pressure sensor, and a damper driver that causes the MR damper to generate a damping force corresponding to the damping force command value. At a point of time when steering becomes easily shakable, the damping force corresponding to the damping force command value is generated to prevent shaking of the steering beforehand.

Steering damper control apparatus, and a saddle riding type vehicle having the same

In a steering damper control apparatus, when a command value output unit detects an idle spin of a rear wheel, a damper driver increases a damping force of an MR damper to be higher than a damping force thereof used when the rear wheel is not spinning idly. Therefore, skidding of the rear wheel is prevented to prevent a posture change of a motorcycle. As a result, a driving direction of the rear wheel deviating from a traveling direction is prevented to efficiently use the drive of the rear wheel during traveling.

Growing community of inventors

Shizuoka, Japan

Yasunobu Harazono