Internal combustion engine system and internal combustion engine control method
US7574989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Sep 2, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When a crank angle CAa of a specific cylinder, which was expected to stop in a fuel injection stop range over an intake stroke to a compression stroke at a full stop of an engine and received fuel injection, actually exceeds the fuel injection stop range and reaches a preset reference angle CA4, engine stop-state ignition control of the invention ignites the air-fuel mixture in the specific cylinder receiving the fuel injection at a moment of reaching the preset reference angle CA4 (step S260) and simultaneously injects the fuel into a certain cylinder that is in the intake stroke at the moment of the ignition (step S270). When the crank angle CAa of the specific cylinder receiving the fuel injection does not reach the preset reference angle CA4 but exceeds a preset reference angle CA3 that is smaller than the preset reference angle CA4, the engine stop-state ignition control of the invention ignites the air-fuel mixture in the specific cylinder upon a preset wait time elapsed after the full stop of the engine (step S295). This arrangement of the invention effectively restrains direct discharge of the uncombusted fuel at a restart of the engine to prevent the poor emission, while e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.