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Fuel Injection Optimization during Engine Quick Start by Means of Cycle-by-Cycle Control Strategy for HEV Application
Technical Paper
2009-01-2718
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engine-off strategy are popular used in hybrid electric vehicles (HEV) for fuel saving. The engine of an HEV will start and stop frequently according to the road condition. In order to obtain excellent fuel economy and emissions performance, the fuel injection during engine quick start should be optimized. In this paper, the characteristic of mixture formation and the HC emissions at the first 5 cycles which contribute the most HCs were investigated. After the analysis of mixture preparation during start process, the HC emissions during engine quick start were optimized by means of cycle-by-cycle fuel injection control strategy. The fuel mixture concentration during start-up process fluctuates more dramatically under hot start condition. Typically, the mixture at 4th and 5th cycle is over-riched. Based on the original engine calibration, the fuel injection at the initial 5 cycles was optimized respectively. It is found that the first cycle need to increase fuel injection as general, while the 2nd to 5th cycle need to reduce fuel injection, so that maximum IMEP can be obtained for all of the initial 5 cycles. For the 4th and 5th cycle, it can still produce fairly high IMEP even there’s no fuel injection in these two cycles. By means of cycle-by-cycle fuel injection control strategy, a significant improvement of the HC emissions during engine quick start can be achieved.
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Citation
Yu, S., Zhang, Y., Dong, G., and Li, L., "Fuel Injection Optimization during Engine Quick Start by Means of Cycle-by-Cycle Control Strategy for HEV Application," SAE Technical Paper 2009-01-2718, 2009, https://doi.org/10.4271/2009-01-2718.Also In
References
- Henein N.A. Taraza Dinu Chalhoub Nabil Lai Ming-Chia Exploration of the Contribution of the Start/StopTransients in HEV Operation and Emissions [C] SAE Paper 2000-01-3086 2001
- Matsuura Moritaka Korematsu Koji Tanaka Junya Fuel Consumption Improvement of Vehicles by Idling Stop [C] SAE Paper 2004-01-1896 2004
- Kuang Ming L. An Investigation of Engine Start-Stop NVH in A Power Split Powertrain Hybrid Electric Vehicle [C] SAE Paper 2006-01-1500 2006
- Ng Henry K. Anderson John A. Duoba Michael J. Larsen Robert P. Engine Start Characteristics of Two Hybrid Electric Vehicles (HEVs) - Honda Insight and Toyota Prius [C] SAE Paper 2001-01-2492 2001
- Li Hong-peng Qin Da-tong Yang Yang Xu Jia-shu Dynamics Simulation of ISG-HEV Engine During Starting, Journal of Chongqing University (Natural Science Edition) 2005 28 6 4 8
- Huang Kai-sheng Jin Zhen-hua Zhang Yun-long Investigation of Gasoline Engine Cold-start and Warm-up for Parallel Hybrid Electric Vehicle Chinese Internal Combustion Engine Engineering 2007 28 2 6 9
- Cowart Jim Air-Fuel Ratio Measurement Diagnostics During Cranking and Startup in a Port-Fuel-lnjected Spark-Ignition Engine SAE Paper 2004-01-1915
- Castaing Brigitte M. Cowart Jim S. Cheng Wai K. Fuel Metering Effect on Hydrocarbon Emissions and Engine Stability During Cranking and Start-up in a Port Fuel Injected Spark Ignition Engine SAE Paper 2000-01-2836 2000
- Santoso Halim Cheng Wai K. Mixture Preparation and Hydrocarbon Emissions Behaviors in the First Cycle of SI Engine Cranking SAE Paper, No. 2002-01-2805
- Li Gong Li Li-guang Qiu Dong-ping Liu Zhi-min Transient HC emissions of the First Firing Cycle at Cold Start on an LPG SI Engine Transactions of CSICE 2007 25 2 118 124
- Li Gong Li Li-guang Qiu Dong-ping Liu Zhi-min Transient HC emissions and Fuel Transport in Intake Port of the First Firing Cycle during Cold Start Combustion Science and Technology 2008 14 1 73 78
- Yu Shui Dong Guangyu Gao Yuan Li Liguang Transient Characteristics of Combustion and Emissions during Start up at Higher Cranking Speed in a PFI Engine for HEV Application SAE Paper, No. 2008-01-2420
- Lang Kevin R. Cheng Wai K. Effect of Fuel Properties on First Cycle Fuel Delivery in a SI Engine SAE Paper, No. 2004-01-3057