Method to adapt engine fuel control, by multi-component vaporization method, to actual volatility quality of fuel
US6460513B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system (12) and method for controlling the injection of fuel into a cylinder (14) of an internal combustion engine (10) are provided. The system (12) includes a fuel injector (22), a temperature sensor (48), and an electronic control unit (ECU) (50). The fuel is parsed into a plurality of components based on the boiling points of elements of the fuel. ECU (50) stores mass fraction values for each component relative to the total mass of a sample of the fuel along with vaporization rates for each component. These values are used by the ECU (50) to account for different vaporization rates among fuel elements. In accordance with the invention, ECU (50) is further configured to adjust the mass fraction values responsive to the combustion air-fuel ratio and the engine temperature to account for the different volatility characteristics of various fuels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.