System and method for backpressure compensation for controlling exhaust gas particulate emissions
US7437874B2 · kind B2 · utility
20Cited by
19References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 10, 2005 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jun 20, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling exhaust gas particulate emissions from a compression ignition internal combustion engine having a variable geometry turbocharger (VGT) includes the steps of determining backpressure across the engine and air mass flow into the engine, closing vanes of the VGT to provide air mass flow increase when backpressure is increasing, and stopping the step of closing the vanes of the VGT when a decrease in rate of change of air mass flow is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.