Cold start pulse width compensation
US6618665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Jan 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine control system processes data to develop desired fueling data representing a desired amount of fuel that is to be injected into the engine for combustion. The desired fueling data is modified by a multiplier during a cranking, starting, and initial running phase of the engine, and after the engine has started and begins running, modifies the multiplier by a multiplier adder. Use of the multiplier added is discontinued once the engine fuel injectors have sufficiently warmed up. The multiplier adder is a function of an average of desired fueling data taken over a time interval that includes engine cranking, starting, and initial engine running.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.