Honda Motor Co., Ltd.

Shun Tanaka

Hiroaki Sato

Haruya Kitano

Yasuhiro Motohashi

Naoki Sato

Hiromitsu Hirano

Masayoshi Takahashi

Provided is a protective structure () for a fuel pipe () extending along the intake side of an engine main body () under an intake manifold (). A protective member () is placed in front of the fuel pipe. The protective member includes a pair of legs () secured to the intake side of the engine main body, a main body () extending from the legs upward in an arcuate manner along a front side of the fuel pipe and bent rearward in an upper part thereof, and an abutting projection (G) extending from an upper end of the main body and projecting upward and rearward. A fastening member () is passed through a flange of the intake manifold, and includes an engagement feature () positioned behind a free end of the abutting projection. The protective member minimizes the loading transmitted to the fuel pipe at the time of a vehicle crash.

Protective structure for fuel pipe

An internal-combustion engine includes a cylinder, a piston, a spark plug, and a fuel injection valve. The piston includes a top surface and a cavity provided in the top surface. The cavity includes a bottom surface, a vertical wall, a first sidewall, and a second sidewall. The fuel injection valve includes a plurality of injection ports from which a plurality of fuel mists are to be obliquely injected toward the top surface of the piston in respectively different directions at a predetermined crank angle in a compression stroke. The cavity extends from a position close to a center of the piston toward the fuel injection valve when viewed from above the top surface of the piston. The first and second sidewalls extend toward the fuel injection valve when viewed from above the top surface of the piston.

Internal-combustion engine

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Wako, Japan

Shun Tanaka