Power transmission system of crank structure
US8739759B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19647
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A crank arm of a internal combustion engine is replaced by an elliptical gear 3 and another elliptical gear 4 having the same size and shape is assembled to engage and rotate such that the positions moved by a predetermined distance along the major axes of ellipses from centers 8 and 9 of the ellipses become rotation centers 5 and 7 of the elliptical gears 3 and 4 to alternately change the distances from the rotation centers of the engaged elliptical gears to a power transmission point 6 in accordance with the direction of power transmission. The present invention provides a power transmission assembly for improve on fuel efficiency of a internal combustion engine that makes it possible to improve acceleration force and hill climbing ability by generating larger torque and to generate large effective power by reducing the loss of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.