Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Jidosha Engineering Kabushiki Kaisha

Satoshi Matsui

Toshihiko Oka

Koichi Yoshimoto

Yoshinori Sakurai

Tetsushi Nagira

Kazuaki Koyama

Kenichi Morishima

Akimasa Yamamoto

Sumito Hori

A horizontal groove extending horizontally when an alternator bracket is fixed to a cylinder block of a vehicle engine is formed in the alternator bracket. A shank of a bolt inserted through mounting pieces of an alternator is inserted into the horizontal groove from a horizontally lateral direction toward the cylinder block to support the bolt on a lower surface of the horizontal groove. After insertion, the bolt is restrained from moving toward an opening of the horizontal groove. Since the insertion of the bolt into the horizontal groove is facilitated, and the weight of the alternator is borne by the lower surface of the horizontal groove, a burden on a fixing portion is reduced, and it becomes easy to position the alternator and hold it when it is fixed. Thus, the accessory can be mounted on the cylinder block with satisfactory work efficiency and with support accuracy kept high.

Accessory mounting structure

A pair of exhaust ports () have flat portions () formed on respective inner peripheral surfaces thereof and facing in directions opposite to each other. An intervening cooling water passage () is formed between the flat portions () when a cylinder head () is cast.

Cooling water passage structure for an engine

The bottom surfaceof the cylinder headis formed by an intake-side bottom surfaceand an exhaust-side bottom surfaceon which an intake portand an exhaust portare formed respectively. Further, a first wallformed between an intake-side water jacketand the intake-side bottom surfaceis larger in thickness than a second wallformed between an exhaust-side water jacketand the exhaust-side bottom surface. This structure can reduce an amount of HC included in exhaust gas.

Cylinder head structure

Growing community of inventors

Okazaki, Japan

Satoshi Matsui