Fuel control system for automotive power plant
US5193509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an automotive power plant including a combustion engine, intake and exhaust passages communicated with a combustion chamber for an introduction of an air-fuel mixture into and a discharge of exhaust gases from the combustion chamber, respectively, a fuel injector for injecting a controlled amount of fuel into the combustion chamber together with air sucked through the intake passage, and a throttle valve of which opening is adjustable for controlling the flow of the air through the intake passage, a fuel control system for determining the amount of fuel to be injected into the combustion chamber in dependence on the amount of air being sucked. The fuel control system includes a throttle sensor for detecting the opening of the throttle valve; and a control unit operable to determine a first fuel decrement in dependence on the amount of fuel injected at the start of a decrease in throttle opening during a deceleration of the engine when the throttle sensor detects the decrease in throttle opening at a speed higher than a predetermined value and regardless of a speed of movement of the throttle valve; to interrupt the determination of the first fuel decrement when the rate of chang…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.