Diesel engine exhaust gas recirculation and intake air flow control system
US4329965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Apr 7, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2009/0276
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a diesel engine which includes an air intake system, an exhaust system, and an exhaust gas recirculation passage which recirculates part of the exhaust gases produced by the engine from the exhaust system to the air intake system, a control system for the recirculation of exhaust gases and the flow of intake air, having an intake air flow control valve mounted in the air intake passage, and a recirculated exhaust gas flow control valve, mounted in the exhaust gas recirculation passage, these two control valves being so coupled together that, as one of them opens progressively, the other closes progressively, and vice versa, so that exhaust gas recirculation ratio alters in substantially direct proportion to the amount of opening of the exhaust gas recirculation flow control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.