Method of controlling in-cylinder trapped gas masses in a variable timing gasoline engine
US8307814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2010 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Jan 17, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is a method of controlling trapped gas masses in cylinders of a variable timing gasoline engine. A set point is determined for a trapped air mass in a cylinder and a set point is determined for trapped burnt gas mass in a cylinder. Then, in order to meet these set points: an intake pressure set point is generated from measurements of variable timing of positions of actuators and from the air mass set point; a position set point is generated for each of two variable timing actuators, from an intake pressure measurement and from the burnt gas mass set point; finally, a throttle and the variable timing actuators are controlled so as to meet the intake pressure set point and the set point position of the variable timing actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.