Internal-combustion engines – Multiple cylinder
Patent
1987-06-23
1989-05-16
Wolfe, Willis R.
Internal-combustion engines
Multiple cylinder
123 52MV, F02B 7522
Patent
active
048299448
ABSTRACT:
An intake manifold comprising a main pipe made of wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes, and a plurality of branch pipes made of wrought aluminum material and each having one end fitting in and joined to each of the tubular projections. The manifold is smooth-surfaced in its interior, diminished in resistance to air and improved in air intake efficiency. The manifold requires no finishing procedure unlike those prepared by casting.
REFERENCES:
patent: 4372120 (1983-02-01), Ford et al.
patent: 4515115 (1985-05-01), Okubo
patent: 4608948 (1986-09-01), Inoue et al.
patent: 4643137 (1987-02-01), Choushi et al.
patent: 4686944 (1987-08-01), Hiraoka et al.
Akiyoshi Yasushi
Hirunuma Naohisa
Kaneko Toyoji
Nogami Toyoichiro
Sukimoto Minobu
Macy M.
Showa Aluminum Corporation
Wolfe Willis R.
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