Patent · US Active

Mass balancing device for an internal combustion engine

US8677969B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Peter Solfrank · Frensdorf, DE
Michael Bogner · Eckental, DE

Key dates

Filing date	Feb 1, 2011
Grant date	Mar 25, 2014
Priority date	—
Expiry date	Feb 1, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2361/53
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A mass balancing device for balancing free inertial forces and/or free moments of inertia of a reciprocating internal combustion engine (1). The mass balancing device includes two balancer shafts (3, 4) rotating at the same rotational speed in opposite directions of rotation, and a transmission (5) arranged between the crankshaft (2) of the internal combustion engine and the balancer shafts. The transmission drives the balancer shafts at a transmission ratio of crankshaft rotational speed to the balancer shaft rotational speed that is non-uniform over the crankshaft angle such that the angular speed of the balancer shafts is at the maximum at the piston dead centers. The mass balancing device is intended to be configured for an internal combustion engine of multi-cylinder design and the mean value of the transmission ratio is intended to be 1:2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.