Method and equipment for controlling the idling speed of an internal combustion engine
US5121726A · kind A · utility
5Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | May 7, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/1433
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The idling speed of an internal combustion engine is regulated with the use of an electronic control unit arranged to generate a signal for correcting the ignition advance and a signal for varying the piloting of a solenoid valve provided in a duct which by-passes a throttle valve which controls the air supply to the engine. For this purpose, the electronic unit acquires the instantaneous speed of the engine and the air pressure in the inlet manifold by means of sensors. The electronic unit implements an LQI (linear-quadratic-integral) type of control based on a linear mathematical model of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.