Fuel control device for engine having disconnectable groups of cylinders
US5492100A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel control device comprises a pair of valve change-over units KL and KH, an operation mode setting unit A1 for setting an engine in either a partial or full cylinder operation mode as a target operation mode according to engine operation data, a valve change-over controller A2 for controlling the valve change-over unit KL or KH to establish the target engine operation mode, a fuel supply unit FS to selectively supply fuel to active cylinders in the target engine operation mode, a mode change confirming unit A3 for confirming whether or not the engine is switched from the partial cylinder operation mode over to the full cylinder operation mode and issuing a mode change confirming signal, and a fuel supply controller A4 for operating the fuel supply unit FS in the partial cylinder operation mode when the partial cylinder operation mode is not successfully changed over to the full cylinder operation mode. Thus, the fuel control device forcibly operates the engine in the partial cylinder operation mode except when the full cylinder operation mode is reliably changed over to the partial cylinder operation mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.