Method of generating turbulence with intra-cycle cooling for spark ignition engines
US5862790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of operating a four stroke, spark ignition, high compression ratio, internal combustion engine including at least one intake valve (30), exhaust valve (32) and charging valve (36) per cylinder (16). Each of the valves is actuable by a variable timing mechanism (50), which is controlled by an on-board computer (82) that varies the timing of valve opening and closing depending upon engine operating conditions. Each charging valve port (34) leads to an auxiliary chamber (40) having geometry to cause a swirling motion of the charge entering the chamber and surrounded by a cooling jacket (42) to cool the charge as it swirls before being released back into the cylinder during the next engine cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.