RPM control apparatus for internal combustion engine
US4667632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D31/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An RPM control apparatus for an internal combustion engine including a first limiter which suppresses an RPM feedback control signal indicating a target suction quantity or a target suction pipe pressure within a predetermined range that is set necessary and sufficient for covering a fluctuation range attributed to a no-load loss of the engine, and a second limiter which suppresses a suction feedback control signal on the basis of the output of the first limiter and an actual suction air quantity or suction pipe pressure within a predetermined range that is set necessary and sufficient for covering a fluctuation range attributed to the density of suction air, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.