Diesel engine control
US6502563B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Nov 19, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a diesel engine provided with an exhaust gas recirculation valve (6), a target exhaust gas recirculation amount determined based on the engine running condition is compared with a maximum recirculation amount of the valve (6) (S28). When the target exhaust gas recirculation amount exceeds the maximum recirculation amount, the target exhaust gas recirculation amount is limited to the maximum flowrate (S28). By maintaining the opening of the exhaust gas recirculation valve (6) at an opening corresponding to the maximum recirculation amount for a predetermined time even after the target exhaust recirculation amount has fallen below the maximum flowrate (S26), the exhaust gas recirculation amount is made to promptly follow the target amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.