A quick method to evaluate fuel chemistry on vehicle particulate emissions
2022-01-0585
03/29/2022
- Event
- Content
- Fuel chemistry plays a crucial role in the continued reduction of particulate emission (PE) and cleaner air quality while using internal combustion engines (ICE). Over the past ten years, there has been great improvements in the measurements of particulate formation indices. Examples of these indices would be the Honda Particulate Matter Index (PMI) equation and the General Motors Particulate Evaluation Index (PEI), among others. Even though there have been improvements in particulate index (PI) measurement tools, the method analysis within these tools are still very time-consuming. These methods can include the use of chromatography separation techniques such as detailed hydrocarbon analysis (DHA), which have become very popular in the petrochemical industry. A review of historical PI methods will be discussed, along with a PE comparison to a less time-consuming simulated distillation method analysis. Simulated Distillation (SimDis) is used for the determination of gasoline by wide-bore capillary gas chromatography (ASTM D7096). This gas chromatography method provides a rapid separation of gasoline compounds that can further characterize boiling point properties from the chromatography. SimDis analysis on gasoline uses the capillary column to physically separate the fuels chemical compounds and identify the boiling point of each compound. Thus, producing a unique boiling point distribution for each fuel analyzed. Extracted from this boiling point distribution are boiling point ranges that can be further processed into the identification of chemical compounds with use of the DHA. Once the compounds are identified, the aromatic compounds can then be used to calculate the PMI and PEI. An updated PEI-SimDis equation that strongly correlates to the current PMI equation will be reviewed.
- Citation
- Geng, P., collin, W., and Akers, V., "A quick method to evaluate fuel chemistry on vehicle particulate emissions," SAE Technical Paper 2022-01-0585, 2022, .