Method for detecting steady-state and transient air flow conditions for cam-phased engines
US7319929B1 · kind B1 · utility
28Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2006 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Aug 24, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0402
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air flow state determining system that determines a mass air flow into a cylinder of an engine having a cam phaser includes a first module that determines whether an air flow state is one of steady-state and transient based on a cam phaser position. A second module determines the mass air flow using one of a mass air flow sensor signal and a speed density relationship based on whether the mass air flow state is one of steady-state and transient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.