Internal combustion engine with variable compression ratio
US5165368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1992 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Mar 23, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C23/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combination hydraulic and mechanical mechanism for varying the stoke/clearance volume of an engine in response to the alternating torsional impulses of the engine that are applied through the piston and connecting rod mechanism. An eccentric on which the connecting rod is journaled is rotated relative to the crankshaft to vary the crank radius, which will vary the compression ratio and make other changes in the thermodynamic cycle. A fluid pressure control system includes a pressure movable shaft controlling the flow of fluid past one-way check valves to oil filled hydraulic cylinders that contain pistons/plungers operably connected to the eccentric and crankshaft, to control the movement of the eccentric in response to the torsional impulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.