Nissan Motor Company Limited

Mitsuhiro Sonomura

Shigeyuki Yoshida

Kouichi Sagawa

Haruaki Nakatsukasa

Kentarou Uchibori

Hiromichi Serizawa

At the time of head-on collision of a vehicle, an intermediate portion of a subframe is folded and deformed downwardly into a form of L-shape, an engine body is moved downward, a radiator core upper rail is rearwardly deformed and moved, a collision load is input to an upper portion of the engine body through a rod , and the engine body is rotated rearward around a connecting member . With this, a distance of a shortest portion between the engine body and a dash panel is increased, and a crushing stroke of the engine room is increased.

Power unit layout structure

A power unit arrangement structure for a vehicle is provided with a side-member extending in a fore and aft direction of a mounting room and enabled to achieve buckling deformation in the fore and aft direction during a frontal collision, a sub-frame extending in the mounting room along the fore and aft direction at an area below the side-member, a mount member having respective an insulating function and permitting a power unit to be supported with the side-member, a bent portion disposed at a substantially intermediate portion of the sub-frame in the fore and aft direction and having a downwardly bent configuration, and a connecting member connecting a lower portion of the power unit to the sub-frame in the vicinity of the bent portion. The mount member is capable of tearing in response to relative movement of the side-member and the power unit in the fore and aft direction during the frontal collision. The sub-frame has a part having a substantially V-shaped configuration in a side view. With such a structure, a falling behavior of the power unit is stably controlled during the frontal collision of the vehicle.

Growing community of inventors

Tokyo, Japan

Mitsuhiro Sonomura