Apparatus, system, and method for controlling exhaust emission using a pre-filter
US7784451B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Various embodiments of an apparatus, system, and method are disclosed for improving the tracking bandwidth of an air handling system of an internal combustion engine. For example, one embodiment of an apparatus includes an intake charge module configured to determine a desired air intake flow rate into the combustion chamber based at least partially on a desired oxygen concentration in the combustion chamber. The apparatus also includes an EGR system module configured to determine a desired EGR gas flow rate into the combustion chamber based at least partially on the desired oxygen concentration in the combustion chamber. Additionally, the apparatus includes a pre-filter module configured to modify the desired air intake flow rate and the desired EGR gas flow rate based at least partially on predetermined transient response characteristics of the air handling system. The desired air intake flow rate is achievable by commanding a fresh air regulator to achieve the modified air intake flow rate and the desired EGR gas flow rate is achievable by commanding an EGR regulator to achieve the modified EGR gas flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.