Crankshaft of V-type 6-cylinder internal combustion engine

Details Crankshaft of V-type 6-cylinder internal combustion engine Crankshaft of V-type 6-cylinder internal combustion engine

1993-06-30

1996-01-09

Marmor, Charles A.

Machine element or mechanism

Elements

Cranks and wrist pins

74595, 74596, 74597, 74598, 74604, 1231922, F02B 7506, F16C 304

Patent

active

054819423

ABSTRACT:
A crankshaft of a V-type 6-cylinder internal combustion engine including first to sixth crank pins connected with connecting rods, having first to fourth crank journals between the first to sixth crank pins, and first to ninth crank arms between first to sixth crank pins and the first to fourth crank journals, the combination including a first balance weight provided to the first crank arm, a center of gravity of the first balance weight being mal-distributed to a lower part with respect to a center axis of the crankshaft, a second balance weight provided to the second crank arm, a center of gravity of the second balance weight being mal-distributed to a lower part, and deviated from the first balance weight in a counterclockwise direction, third and fourth balance weights provided respectively to the fourth crank arm and sixth crank arm, the centers of gravity of the third and fourth balance weights being mal-distributed to be orthogonal to the center of gravity of the first balance weight in a clockwise direction, a fifth balance weight provided on the eighth crank arm, the center of gravity of the fifth balance weight being mal-distributed to be in vertical symmetry with the second balance weight, and a sixth balance weight provided to the ninth crank arm, the center of gravity of the sixth balance weight being mal-distributed to be in vertical symmetry with the first balance weight.

REFERENCES:
patent: 2680387 (1954-06-01), White et al.
patent: 3538788 (1970-11-01), Patchen
patent: 4046028 (1977-09-01), Vachris
patent: 4517933 (1985-05-01), Yasutake
patent: 4552104 (1985-11-01), Hara et al.
patent: 4730512 (1988-03-01), Ito et al.
patent: 4787342 (1988-11-01), Matsumori et al.
patent: 5000141 (1991-03-01), Sugano

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