Yamaha Hatsudoki Kabushiki Kaisha

Takashi Fujita

Takahide Sugiyama

Naoto Mazuka

Yoshinori Yamada

Hitoshi Kashima

Hisamichi Naito

A transmission system for vehicle includes a clutch disposed in a power transmission path between an engine and a vehicle wheel, a transmission disposed in the power transmission path, a clutch actuator, a shift actuator, a vehicle wheel speed sensor, a sudden deceleration detecting unit that detects a sudden deceleration of the vehicle wheel based on an output signal of the vehicle wheel speed sensor, and a shift control unit. The shift control unit executes an ordinary shift control to shift to a speed adaptive shift stage associated with the rotational speed and to execute, when the sudden deceleration detecting unit detects the sudden deceleration of the vehicle wheel, a sudden deceleration adaptive shift control to shift to a shift stage lower than an actual shift stage at the point of detection of the sudden deceleration and higher than the speed adaptive shift stage associated with the rotational speed.

Transmission system for vehicle

A power generator unit incorporates an engine and a generator driven by the engine. The generator incorporates a sound insulation cover that allows for efficient cooling of the various internal components. An engine crankcase cover mounts the generator close to the engine to promote a compact construction while allowing sufficient cooling of the engine, the generator, and a muffler. A fan draws in cooling air through one or more cooling air vents to cool a battery, an electronic control unit, the engine, the generator, and the muffler. The insulation cover provides quiet operation and efficient cooling of the power generator unit.

Growing community of inventors

Iwata, Japan

Takashi Fujita