Fuel metering system for an internal combustion engine
US4357923A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1980 |
| Grant date | Nov 9, 1982 |
| Priority date | — |
| Expiry date | Oct 7, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2275/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Applicant's invention includes an improved fuel metering system which is particularly suitable for use with spark ignition and internal combustion engines controlled by digital computers programed to calculate repetitively a value representing a current transfer rate of the intake surface fuel and the calculated value being used to modify the rate at which fuel otherwise would be metered into the engine's intake passage. In particular, modification of the rate at which fuel is metered into the engine's intake passage takes into account the current equilibrium intake surface fuel quantity, the current intake system time constant, and the current actual intake surface fuel. From these quantities the current trend for rate of intake surface fuel is calculated. In a calculation of the current actual intake surface fuel, a previous value of the actual intake surface fuel is used in combination with a previous value of the transfer rate of intake surface fuel. Additionally, a clock is used to establish a time span.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.