Honda Giken Kogyo Kabushiki Kaisha

Tatsumi Yamada

Hiroshi Hashimoto

Takashi Komatsuda

Seiji Kato

Toru Yagi

Kazuo Ishii

Koichi Fujimori

Kazuhiro Furuhashi

Tadao Takagi

Mitsuo Ehara

An exhaust manifold M is comprised of a plurality of inner exhaust pipe shells secured to an upper flange, and a plurality of outer exhaust pipe shells secured to the upper flange to individually cover the inner exhaust pipe shells, wherein a downstream end of each of the corresponding inner exhaust pipe shells slidably contacts an annular bead bulging from an outer peripheral surface of the downstream end of the outer exhaust pipe shells. An inner collecting pipe shell communicates with the plurality of inner exhaust pipe shells and is secured at its upstream end to the plurality of outer exhaust pipe shells, and an outer collecting pipe shell which is secured at its upstream end to the plurality of outer exhaust pipe shells covers the inner collecting pipe shell. A downstream end of the inner collecting pipe shell slidably contacts an annular mesh member interposed therebetween. Sliding portions for absorbing a difference in the axial thermal elongation between inner and outer double walls are provided separately at the downstream end of an exhaust single pipe and the downstream end of an exhaust collecting pipe. Thus, the sliding stroke in each of the sliding portions can be set to a small value, and the absorption of the thermal elongation can be carried out smoothly.

Heat-insulation type exhaust manifold

A starter system for a hot internal combustion engine, the starter system including a first valve which opens upon starting of the engine in a heated state to permit supplemental air to be drawn into the engine intake passage to dilute the air-fuel mixture therein, and a second valve down stream of the first valve arranged to cut off supplemental air flow as vacuum pressure corresponding to complete firing of the engine develops in the intake passage.

Hot starter system for engines

Growing community of inventors

Wako, Japan

Tatsumi Yamada