Honda Motor Co., Ltd.

Takuya Yamada

Ken Ogawa

Akihiro Yamashita

Seiji Hanafusa

Naoaki Takeda

Atsushi Umemoto

Noritaka Kimura

Mitsuhiro Iwadare

Fumiyasu Suga

Tsunehiro Kobayashi

Satoshi Kodo

Takeo Kobayashi

Teruyoshi Morita

Yoshikazu Ishitsuka

There is provided a drive system for a vehicle. The system includes: an internal combustion engine (ENG); a transmission mechanism (TM) a one-way clutch (OWC); a rotated driving member (); an electric motor (MG) that rotates the output shaft of the internal combustion engine; an electric motor generator (MG) that transmits the rotational power to the rotated driving member and performs regenerative operation by receiving the rotational power output from the rotated driving member; and a controller () configured to cut off a fuel supply to the internal combustion engine and control the electric motor to rotate the output shaft of the internal combustion engine while the electric motor generator performs the regenerative operation.

Drive system for vehicle and vehicle driving method

A water-cooled engine mounted on a vehicle wherein a mass concentration keeps the center of mass at a low position. In a saddle-ride type four-wheel vehicle, a radiator and a fuel tank are supported on lower frames, and are arranged, side by side, so as to be distributed respectively on the right-hand side and on the left-hand side so as to overlap each other when viewed from a side. In addition, the fuel tank and the radiator are disposed at the rear of a front suspension arm and at the rear of an engine. As a result, the concentration of mass and the keeping of the mass at a lower position are achieved. Moreover, the fuel tank and the radiator are allowed to stretch outwards beyond the upper frames. Consequently, the fuel tank can have a larger capacity and a ventilation path that leads to the radiator can be secured.

Saddle-ride type four-wheel vehicle

An air-fuel ratio of an air-fuel mixture produced by fuel injected from a first injector into an intake port (or into a combustion chamber) is set in a range of 28 to 38. Therefore, when the temperature and pressure rise with a first combustion started by spark-ignition around a spark plug to the fuel injected from a second injector into the combustion chamber, the timing of starting a second compressive hypergolic ignition is optimized to provide a stable combustion state free of knocking and misfire.

Internal combustion engine and fuel injection method in internal combustion engine

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Saitama, Japan

Takuya Yamada