Method of making apparatus for damping torsional vibrations

Details Method of making apparatus for damping torsional vibrations Method of making apparatus for damping torsional vibrations

1987-06-23

1988-11-15

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Assembling or joining

74573F, F16C 1500

Patent

active

047838957

ABSTRACT:
A method of making a torsional vibration damping apparatus which is used in the power train between the engine and the transmission of a motor vehicle and wherein two flywheels are rotatable relative to each other against the oppositions of dampers in a fluid-containing annular chamber of the flywheel which is driven by the output shaft of the engine involves rotation of the chambered flywheel at 4000-7000 RPM during or immediately following admission of a viscous fluid medium into the chamber. Such rotation results in complete expulsion of air from the radially outermost portion of the chamber and renders it possible to properly balance the chambered flywheel in a next-following step. The balancing step includes rotating the chambered flywheel at 400-2000 RPM. Such balancing step can be carried out prior or subsequent to coupling of the chambered flywheel with the other flywheel.

REFERENCES:
patent: 4611701 (1986-09-01), Friedmann
patent: 4638684 (1987-01-01), Maucher
patent: 4723463 (1988-02-01), Reik et al.
patent: 4727970 (1988-03-01), Reik et al.
patent: 4729464 (1988-03-01), Friedmann
patent: 4732250 (1988-03-01), Maucher et al.
patent: 4739866 (1988-04-01), Reik et al.

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