Electronically controlled carburetor
US4407248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1982 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Jan 20, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/74
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronically controlled carburetor for an internal combustion engine for a vehicle has a variable venturi for varying the venturi cross-section and concurrently varying the amount of air metered into the venturi in response to the engine demands an air flow sensor for sensing the displacement of the variable venturi and producing related electrical signals in response to changes in air flow through the venturi, a main fuel nozzle for discharging metered fuel into the venturi, a fuel flow sensor for sensing pressure differential of fuel across a main fuel jet communicating with the main fuel nozzle and for producing related electrical signals in response to changes in fuel flow through the main fuel jet, an air bleed controlling actuator for controlling the amount of air to be bled into the main fuel nozzle, and a control circuit responsive to the output signals from the air flow sensor and the fuel flow sensor for driving the air bleed controlling actuator. With this arrangement, the amount of air bleed may be controlled so as to set the ratio of air-to-fuel at an arbitrary fixed value at all times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.