Rotor housing for a rotary piston type engine and method for manufacturing the same
AssigneeToyo Kogyo Co., Ltd.
InventorsHirotaka Iida, Hiroshi Masaoka, Michinobu Yamada, Mutsuo Ichihara, Yoshitaka Uebayashi, Koji Tashiro, Sadao Taketomo
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Abstract
Rotor housing for a rotary piston type engine comprising a liner made of a metal sheet having one surface formed with teeth-like projections, said liner being formed into a trochoidal configuration with said one surface directed outside, and an aluminum based metal housing substrate cast around the liner whereby firm bonding is assured between the liner and the housing substrate due to the existence of the projections. Novel method for manufacting such a rotor housing is also disclosed.
Claims6
Method for manufacturing a rotor housing for a rotary piston type engine having a rotor housing liner with a cold zone located substantially opposite an ignition plug opening, comprising steps of providing a rolled metal sheet, scratching one side of said metal sheet to provide a rough surface, welding opposite terminal edges of said metal sheet together with said rough surface directed outside, forming said metal sheet into a trochoidal configuration to provide a liner with the welded edges disposed within a cold zone of the completed housing, and casting under pressure an aluminum based material around said liner with terminal edges welded to
Dependencies are inferred from the claim text.