Dynamic journal engine
US7121252B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 28, 2006 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01B9/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine that replaces the throw journal of a crankshaft with a set of contours that are dynamic rather than static. The contour is such that three cycles of engine operation are not affected, i.e., exhaust, intake, and compression. The contour deviates only during the power stroke where an increased incidence to the circular is incorporated. This defers from previous attempts by eliminating complex geometries such as epitrochoidal or sinusoidal that by their nature negatively affect the exhaust, intake, and compression strokes of the Otto cycle when compared to the traditional crankshaft. Additionally, the deviation from the circular orbit during the power cycle optimizes to a larger extent the leverage available for peak thermodynamic pressures in the cylinder in the brief optimum time afforded by that pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.