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Transient Characteristics of Combustion and Emissions during Start up at Higher Cranking Speed in a PFI Engine for HEV Application
Technical Paper
2008-01-2420
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The transient characteristics of combustion and emissions during the engine start up at different higher cranking speeds for hybrid electric vehicle (HEV) applications were presented in this paper. Cycle-by-cycle analysis was done for each start up case. Intake air mass during the first several cycles decrease as the engine was cranked at higher speed. Ignition timing is delayed with higher cranking speed, which leads to an increase of exhaust temperature. For various start up cases, similar quantity of fuel is injected at the first cycle, but the ignition timing is significantly delayed to meet the acceleration requirement when cranking speed enhanced. Because of the deterioration of intake charge, the air-fuel mixture is over-enriched in the first several cycles for the cases at higher cranking speed. With cranking speed is increased, the in-cylinder residual gas fraction rises, which leads to poor combustion and decrease of mass fraction of burned fuel.
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Citation
Yu, S., Dong, G., Gao, Y., and Li, L., "Transient Characteristics of Combustion and Emissions during Start up at Higher Cranking Speed in a PFI Engine for HEV Application," SAE Technical Paper 2008-01-2420, 2008, https://doi.org/10.4271/2008-01-2420.Also In
References
- Henein Naeim A. Taraza Dinu Chalhoub Nabil Lai Ming-Chia Exploration of the Contribution of the Start/Stop Transients in HEV Operation and Emissions SAE Paper, No. 2000-01-3086
- Matsuura Moritaka Korematsu Koji Tanaka Junya Fuel Consumption Improvement of Vehicles by Idling Stop SAE Paper, No. 2004-01-1896
- Kataoka Kenji Tsuji Kimitoshi Crankshaft Positioning Utilizing Compression Force and Fast Starting with Combustion Assist for Indirect Injection Engine SAE Paper, No. 2005-01-1168
- Kuang Ming L. An Investigation of Engine Start-Stop NVH in A Power Split Powertrain Hybrid Electric Vehicle SAE Paper, No. 2006-01-1500
- 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 SAE Paper, No. 2001-01-2492
- Duoba Michael Ng Henry Larsen Robert In-Situ Mapping and Analysis of the Toyota Prius HEV Engine SAE Paper, No. 2000-01-3096
- Henein N.A. Tagomori M.K. Cold-Start Hydrocarbon Emissions in Port-injected Gasoline Engines Progress in Energy Combustion Science 25 563 593
- Luan Yunfei Henein Naeim A. Contribution of Cold and Hot Start Transients In Engine-out HC Emissions SAE Paper, No. 982645
- Santoso Halim Cheng Wai K. Mixture Preparation and Hydocarbon Emissions Behaviors in the First Cycle of SI Engine Cranking SAE Paper, No. 2002-01-2805
- Castaing Brigitte M. Cowart Jim S. Fuel metering effects on hydrocarbon emissions and engine stability during cranking and start-up in a port fuel injected spark ignition engine SAE Paper, No. 2000-01-2836
- Mladek Michael Onder Christopher H. A Model for the Estimation of Inducted Air Mass and the Residual Gas Fraction using Cylinder Pressure Measurements SAE Paper 2000-01-0958
- Tagomori Mauro Keniti Cold Start Emissions in Gasoline Engines [D] Detroit: Wayne State University 1996
- Cheung Hon M. Heywood John B. Evaluation of a One-Zone Burn-Rate Analysis Procedure Using Production SI Engine Pressure Data SAE Paper 932749
- LIU Zhi-min LI Li-guang GONG Chang-ming LI Gong ZHAI Hong-bin DENG Bao-qing Misfiring Characteristics During Cold-Start in an EFI LPG Engine Journal of Combustion Science and Technology 2006 12 6 545 550
- Cowart Jim Air-Fuel Ratio Measurement Diagnostics During Cranking and Startup in a Port-Fuel-Injected Spark-Ignition Engine SAE Paper 2004-01-1915