Internal-combustion engines – Cooling – Devices for cooling liquid by air flow
Patent
1987-02-24
1988-09-06
Yuen, Henry C.
Internal-combustion engines
Cooling
Devices for cooling liquid by air flow
415119, 415170R, 415172A, F01P 710
Patent
active
047684720
ABSTRACT:
A cooling system for an internal combustion engine, which includes a fan having a boss coupled to an input member, a plurality of blades projecting substantially radially from the boss and a thin cylindrical ring coaxial with the boss and integrated around the blades, and a shroud arranged around the fan with a clearance therebetween. The ring has a cylindrical portion in its intake side and is bent, with a curvature, outwardly toward its exhaust side. The relative arrangement of the fan with the ring and the shroud is such that a maximum diameter of the ring/(the diameter of the cylindrical portion of the ring+the clearance.times.2) is established in the range of 0.97 to 1.04, that the curvature/the diameter of the cylindrical portion of the ring is established in the range of 0.05 to 0.08, and that overlapping length of the shroud with the ring is established in the range of 0.17 to 0.70.
REFERENCES:
patent: 3321931 (1967-05-01), Lehmkuhl
patent: 3433403 (1969-03-01), Gerlitz
patent: 3842902 (1974-10-01), Poslusny
patent: 4329946 (1982-05-01), Longhouse
patent: 4505641 (1985-03-01), Tsuchikawa et al.
patent: 4514140 (1985-04-01), Knopf
patent: 4684324 (1987-08-01), Perosino
Hayashi Masaharu
Itakura Masato
Shindo Kenji
Aisin Seiki Kabushiki Kaisha
Yuen Henry C.
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