Article
 

A Novel Fuel Performance Index for Low-Temperature Combustion Engines Based on Operating Envelopes in Light-Duty Driving Cycle Simulations

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/cv43nz531

Descriptions

Attribute NameValues
Creator
Abstract
  • Low-temperature combustion (LTC) engine concepts such as homogeneous charge compression ignition (HCCI) offer the potential of improved efficiency and reduced emissions of NOₓ and particulates. However, engines can only successfully operate in HCCI mode for limited operating ranges that vary depending on the fuel composition. Unfortunately, traditional ratings such as octane number poorly predict the autoignition behavior of fuels in such engine modes, and metrics recently proposed for HCCI engines have areas of improvement when wide ranges of fuels are considered. In this study, a new index for ranking fuel suitability for LTC engines was defined, based on the fraction of potential fuel savings achieved in the FTP-75 light-duty vehicle driving cycle. Driving cycle simulations were performed using a typical light-duty passenger vehicle, providing pairs of engine speed and load points. Separately, single-zone naturally aspirated HCCI engine simulations were performed for a variety of fuels in order to determine the operating envelopes for each. These results were combined to determine the varying improvement in fuel economy offered by fuels, forming the basis for a fuel performance index. Results showed that, in general, lower octane fuels performed better, resulting in higher LTC fuel index values; however, octane number alone did not predict fuel performance.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Niemeyer, K. E., Daly, S. R., Cannella, W. J., & Hagen, C. L. (2015). A Novel Fuel Performance Index for Low-Temperature Combustion Engines Based on Operating Envelopes in Light-Duty Driving Cycle Simulations. Journal of Engineering for Gas Turbines and Power, 137(10), 101601. doi:10.1115/1.4029948
Journal Title
Journal Volume
  • 137
Journal Issue/Number
  • 10
Rights Statement
Funding Statement (additional comments about funding)
  • The authors gratefully acknowledge the Chevron Energy Technology Company for supporting this research.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details NiemeyerKyleMechanicalIndustrialManufacturingEngineeringNovelFuelPerformanceIndex.pdf 2017-07-26 Public Download