Throttle valve control system for an internal combustion engine
US4791902A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Jul 15, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2011/102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A throttle valve control system for an internal combustion engine sets a target value of a pressure in an intake pipe of the engine for attaining a minimum fuel consumption rate in response to a detected engine rotational speed, and drives the throttle valve to an opening determined so as to reduce the difference between the detected actual pressure in the intake pipe and the target value of the pressure in the intake pipe. When the actual operation position of the throttle valve is not in an allowable range of a target throttle valve opening determined in response to the detected engine speed, the throttle valve is controlled to reduce the difference between the actual operation position of the throttle valve and the target throttle valve opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.