Intake air amount control apparatus for vehicle engine and method thereof
US6945224B2 · kind B2 · utility
5Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Jan 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a control apparatus for controlling an intake air amount of an engine by variably controlling a lift amount of an intake valve, when a variable valve lift mechanism is failed, the control is switched to a control of the intake air amount based on an opening degree of a throttle valve, and also the opening degree of the throttle valve is restricted within an upper limit value in order to ensure a negative pressure utilized by a brake booster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.