Vapor assisted cold start control algorithm
US7150271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0406
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine system according to the present invention includes an engine and a fuel system that delivers a liquid fuel and a vapor fuel to the engine. A control module communicates with the fuel system and modulates the vapor fuel delivered to said engine based on a determination of a desired vapor fuel rate and a maximum available vapor fuel rate of the fuel system. The control module determines the desired vapor rate based on a mass rate of liquid fuel being delivered to the engine and a coolant temperature of the engine. The control module determines a vapor density by estimating the vapor density based on a temperature of an intake manifold or alternatively receives a signal from a sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.