Determining manifold pressure based on engine torque control
US6968824B1 · kind B1 · utility
4Cited by
4References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2004 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Jul 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A torque control system for an engine includes a throttle plate having an adjustable throttle position to regulate a first mass air flow into the engine. A control module estimates a previous volumetric efficiency of the engine based on a previous manifold absolute pressure (MAP) and determines a current MAP based on the previous volumetric efficiency. The control module calculates a difference between the current MAP and the previous MAP and sets a desired MAP equal to the present MAP when the difference is less than a threshold difference. The control module commands the throttle position based on the desired MAP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.