Exhaust gas control device in an internal combustion engine
US5675969A · kind A · utility
5Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | May 21, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D9/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas control device is provided in an internal combustion engine. In the device, a valve which comprises a valve head and a valve stem is provided in a body the axis of which is inclined at 45 degrees with respect to a horizontal exhaust pipe. The valve is moved up and down in the body by compressed air and a coil spring. When the valve is engaged on a valve seat in the exhaust pipe, the exhaust pipe is closed, so that exhaust gas flows through a by-pass pipe. When the exhaust pipe is opened, exhaust gas flows through the exhaust pipe, thereby improving engine performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.