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Further Development of an On-Board Distillation System for Generating a Highly Volatile Cold-Start Fuel
Technical Paper
2005-01-0233
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The On-Board Distillation System (OBDS) extracts, from gasoline, a highly volatile crank fuel that enables simultaneous reduction of start-up fuel enrichment and significant ignition timing retard during cold-starting. In a previous paper we reported reductions in catalyst light-off time of >50% and THC emissions reductions >50% over Phase I of the FTP drive cycle.
The research presented herein is a further development of the OBDS concept. For this work, OBDS was improved to yield higher-quality start-up fuel. The PCM calibration was changed as well, in order to improve the response to intake manifold pressure transients. The test vehicle was tested over the 3-phase FTP, with exhaust gases speciated to determine NMOG and exhaust toxics emissions. Also, the effectiveness of OBDS at generating a suitable starting fuel from a high driveability index test gasoline was evaluated.
The key benefits attributable to the use of the OBDS with the improved calibrations were reductions in NMOG and CO emissions of 81% and 87%, respectively, over the FTP drive cycle. Additionally, catalyst light-off time was reduced by 55%.
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Ashford, M. and Matthews, R., "Further Development of an On-Board Distillation System for Generating a Highly Volatile Cold-Start Fuel," SAE Technical Paper 2005-01-0233, 2005, https://doi.org/10.4271/2005-01-0233.Also In
References
- Ashford MD Matthews RD Hall MJ Kiehne T Dai Wen Curtis E Davis GC 2003 “An On-Board Distillation System to Reduce Cold-Start Hydrocarbon Emissions,” SAE Technical Paper 2003-01-3239
- Santoso H. Cheng W. 2002 “Mixture Preparation and Hydrocarbon Emissions Behaviors in the First Cycle of SI Engine Cranking,” SAE Technical Paper 2002-01-2805
- Matthews, RD 2003 Internal Combustion Engines and Automotive Engineering
- Kane, E Mehta D Frey C 2001 “Refinement of a Dedicated E85 1999 Silverado with Emphasis on Cold Start and Cold Driveability,” SAE Technical Paper 2001-01-0679
- Kidokoro, T Hoshi K Hiraku K Satoya K Watanabe T Fujiwara T Suzuki H 2003 “Development of PZEV Exhaust Emission Control System,” SAE Technical Paper 2003-01-0817
- Stovell, CH Matthews RD Johnson BE Ng HK Larsen B 1999 “Emissions and Fuel Economy of a 1998 Toyota with a Direct-Injection, Spark-Ignition Engine,” SAE Technical Paper 1999-01-1527
- Ku, J Huang Y Matthews RD Hall MJ 2000 “Conversion of a 1999 Silverado to Dedicated E85 With Emphasis on Cold Start and Cold Driveability” SAE Technical Paper 2000-01-0590
- Kaiser, EW Siegl WO Baidas LM Lawson GP Cramer CF Dobbins KL Roth PW Smokovitz M 1994 “Time-resolved measurement of speciated hydrocarbon emissions during cold start of a spark-ignited engine,” SAE Technical Paper 940963
- Nitschke, RG 1993 “Reactivity of SI engine exhaust under steady-state and simulated cold-start operating conditions,” SAE Technical Paper 932704