Fuel supply conrol system for internal combustion engine
US6405527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2001 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jan 30, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0814
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a fuel supply control system for an internal combustion engine, which is capable of controlling fuel cutoff according to an amount of oxygen stored in a catalytic converter to thereby enhance the purification rate of the catalytic converter while maintaining excellent fuel economy, thereby making it possible to improve exhaust emission characteristics. An amount of oxygen stored in the catalytic converter 13 arranged in an exhaust pipe 12 of an engine 3 is estimated (steps S1 to S29). A deceleration condition of the engine is detected (steps S35, S36). When the deceleration condition is detected, supply of fuel to the engine is cut off (step S41). The cutoff of fuel supply is controlled based on the oxygen storage amount OSC (steps S31, S32, S40, S41).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.