Kawasaki Jukogyo Kabushiki Kaisha

Kawasaki Motors, Ltd.

Kengo Ueda

Tatsuya Hirokami

Shohei Terai

Seiji Azuma

Hiroyuki Watanabe

Kazuki Arima

Hiroki Tominaga

A control device of a gear transmission-equipped vehicle includes a power controller that starts power reduction control when it is determined that a start condition is satisfied, the power reduction control being control of reducing power transmitted from a driving source to a gear transmission. The start condition includes: a condition that a detection value of a gear position sensor that detects a current gear position of the gear transmission falls within a transition region between engagement regions corresponding to respective gear positions; and a condition that a speed difference obtained by subtracting a rotational speed of an output shaft of the gear transmission from a rotational speed of an input shaft of the gear transmission is a threshold or more.

Control device of gear transmission-equipped vehicle and method of controlling gear transmission-equipped vehicle

A vehicle with an automatic downshift function, comprises an engine including a throttle device and an ignition device; an engine speed sensor which detects an engine speed; a shift operation member which is operated by a rider; a manual transmission connected to the engine, a shift operation sensor which detects the operation of the shift operation member; and a controller which controls the engine based on a detection signal of the engine speed sensor and a detection signal of the shift operation sensor. In a case where the controller determines that a deceleration shift operation has been initiated based on the detection signal of the shift operation sensor, the controller performs an automatic downshift control so that the controller controls the throttle device to increase an intake-air amount and controls the ignition device to change an ignition timing, based on the engine speed detected by the engine speed sensor.

Vehicle with automatic downshift function

A wheelie determining device comprises a lift-off start determiner section which determines whether or not a lift-off of a front wheel from a ground surface has started, based on a traveling state value indicating a traveling state of a vehicle and an operation value indicating a rider's driving operation.

Wheelie determining device and wheelie determining method

An engine power suppressing device includes a controller which controls an operation of a power changing element which changes engine power for driving a vehicle; and an environment sensor which detects an environment parameter indicating an environment in which the vehicle is used, wherein the controller determines whether or not a power suppressing condition in which a vehicle state is a state in which the engine power is to be suppressed, is met, wherein in a case where the controller determines that the power suppressing condition is met, the controller sets a suppressing value for the power changing element to suppress the engine power, and compensates the suppressing value based on the environment parameter detected by the environment sensor.

Engine power suppressing device

An output control system incorporated in a vehicle including a clutch device which shifts a drive system from a no-load state to a connected state, comprises an upper limit setting section which sets an upper limit value of an output of the drive source while the output control system is performing a starting control; and a state determiner section which determines a state of the drive system while the output control system is performing a starting control, the upper limit setting section sets the upper limit value to a first upper limit value, while the state determiner section is determining that the drive system is in the no-load state, and the upper limit setting section sets the upper limit value to a second upper limit value larger than the first upper limit value, when the state determiner section determines that the connected state of the drive system is initiated.

Output control system

An output control system incorporated in a vehicle including a clutch device comprises an upper limit setting section which sets an upper limit value of an output of the drive source to a starting control upper limit value when the output control system is performing a starting control; and a wheelie determiner section which determines whether or not a wheelie is occurring in the vehicle when the output control system is performing the starting control, wherein when the wheelie determiner section determines that the wheelie is occurring, the output control system performs a wheelie suppressing control for suppressing the output of the drive source while maintaining the starting control in such a manner that the output becomes less when the wheelie determiner section determines that the wheelie is occurring than before the wheelie determiner section determines that the wheelie is occurring.

A wheelie suppressing device comprises a wheelie determiner section which detects a wheelie state; and a wheelie suppressing section which performs a wheelie suppressing control for suppressing an engine output when the wheelie determiner section has detected the wheelie state, wherein the wheelie suppressing control includes a first suppressing control for suppressing the engine output while performing fuel feeding and an ignition operation, and a second suppressing control for suppressing the engine output by performing the fuel feeding or the ignition operation at a reduced rate.

Growing community of inventors

Akashi, Japan

Kengo Ueda