Crankshaft for a 90 degree V-type eight-cylinder internal combus

Details Crankshaft for a 90 degree V-type eight-cylinder internal combus Crankshaft for a 90 degree V-type eight-cylinder internal combus

1988-02-01

1989-05-30

Moore, Richard E.

Machine element or mechanism

Elements

Cranks and wrist pins

74603, 74604, 123192R, 123192B, F16C 304

Patent

active

048339407

ABSTRACT:
A crankshaft for a 90.degree. V-type eight-cylinder internal combustion engine having eight balance weights of No. 1 through No. 8 balance weights and supported by five supports. An angle defined between the No. 1 and No. 2 balance weights is set at the range of 15.degree.-45.degree. and an angle defined between the No. 1 and No. 3 balance weights is set at the range of 45.degree.-75.degree.. The mass of each of No. 1 and No. 8 balance weights is greater than the weight of any one of No. 2 through No. 7 balance weights. These relationships can reduce the weight of a crankshaft and bearing loads.

REFERENCES:
patent: 4002087 (1977-01-01), Ferrand
patent: 4351202 (1982-09-01), Summers
patent: 4519344 (1985-05-01), Ohyama et al.
patent: 4552104 (1985-11-01), Hara et al.
patent: 4565169 (1986-01-01), Suzuki
patent: 4569316 (1986-02-01), Suzuki
patent: 4644916 (1987-02-01), Kitagawa
patent: 4730512 (1988-03-01), Ito et al.

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