Honda Motor Co., Ltd.

Keitaro Nakanishi

Shigekazu Tanaka

Akinori Maezuru

Taichi Yoshikawa

Noriaki Fujii

Masanobu Takazawa

Masakazu Kinoshita

Koichi Ikoma

Jiro Fujimoto

Yoshihiro Okada

Katsuya Minami

In a variable stroke engine assembly for a front engine, front wheel drive vehicle, an engine output shaft (OS), a variable stroke control mechanism (, CR), an actuator (AC) and a starter motor (SM) are laid out in a favorable manner so that the general outer profile of the engine assembly can be made free from excessive protrusions, an increase in the engine room space requirement is avoided, layout freedom can be enhanced, and the cooling performance for the actuator can be improved.

Variable stroke engine assembly

In a variable stroke engine comprising a plurality of links () connecting a piston () with a crankshaft (), a control member () disposed on an engine main body so as to be moveable in two directions over a prescribed range relative to the engine main body, a control link () connecting one of the plurality of links with the control member and an actuator (AC) for displacing the control member, the actuator comprises a ratchet mechanism that utilizes a force transmitted from the piston to the control member as an actuating force for the control member. By providing a spring member (, SP,) that applies a biasing force to the control member, an appropriate actuating force can be applied to the control member in either direction.

Variable stroke engine

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Wako, Japan

Keitaro Nakanishi