Balancer shaft supporting structure in engine

Details Balancer shaft supporting structure in engine Balancer shaft supporting structure in engine

1997-02-04

1998-08-11

Solis, Erick R.

Internal-combustion engines

Vibration compensating device

Balancing arrangement

74603, F02B 7506

Patent

active

057913099

ABSTRACT:
A secondary balancer device provided below a cylinder block of an engine including a front balancer shaft and a rear balancer shaft which are rotated in opposite directions and have longitudinally central main journal portions carried in a balancer holder, respectively. Bracing journal portions are provided on axial ends of one of the front and rear balancer shafts and supported in a pump body and a pump cover of an oil pump provided below the cylinder block, respectively. A pump shaft of the oil pump and the front balancer shaft are connected to a crankshaft by a common endless chain and rotated at different numbers of revolutions. Thus, the number of parts for supporting the balancer shafts can be reduced, while maintaining the freedom of setting the number of revolutions of the oil pump of the engine.

REFERENCES:
patent: 4440123 (1984-04-01), Tsai
patent: 4509474 (1985-04-01), Schmuck
patent: 4703725 (1987-11-01), Weertman
patent: 4766857 (1988-08-01), Laine et al.
patent: 5044333 (1991-09-01), Fuchigami et al.
patent: 5083535 (1992-01-01), Deschler et al.
patent: 5535643 (1996-07-01), Garza

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