Anti-rattle engine balancer which drives associated oil pump

Details Anti-rattle engine balancer which drives associated oil pump Anti-rattle engine balancer which drives associated oil pump

1993-11-12

1996-07-16

Marmor, Charles A.

Machine element or mechanism

Elements

Cranks and wrist pins

1231922, F16C 320, F02B 7506

Patent

active

055356435

ABSTRACT:
A Lanchester type engine balancer avoids rattle of gears connecting counterrotating balance shafts by minimizing inertia through limiting diameters of the counterweight envelopes, timing gears and bearing journals of the balance shafts and by driving an accessory, such as an oil pump from the driven balance shaft. Gear lash is controlled by using a cast iron housing with select fitting of steel gears. Also maximum gear pitch diameter runout is oriented in assembly opposite the counterweights of the respective balance shafts to minimize a change in lash caused by shaft runout due to the eccentric load of the counterweights during operation.

REFERENCES:
patent: 3667317 (1972-06-01), Hillingrathner
patent: 3710774 (1973-01-01), Weseloh et al.
patent: 4545341 (1985-10-01), Corey et al.
patent: 4703724 (1987-11-01), Candea et al.
patent: 4766857 (1988-08-01), Laine et al.
patent: 4856486 (1989-08-01), Mori et al.

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