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| 1 | Modified Pressure Loss Model for T-junctions of Engine Exhaust Manifold显示文摘The T-junction model of engine exhaust manifolds significantly influences the simulation precision of the pressure wave and mass flow rate in the intake and exhaust manifolds of diesel engines. Current studies have focused on constant pressure models, constant static pressure models and pressure loss models. However, low model precision is a common disadvantage when simulating engine exhaust manifolds, particularly for turbocharged systems. To study the performance of junction flow, a cold wind tunnel experiment with high velocities at the junction of a diesel exhaust manifold is performed, and the variation in the pressure loss in the T-junction under different flow conditions is obtained. Despite the trend of the calculated total pressure loss coefficient, which is obtained by using the original pressure loss model and is the same as that obtained from the experimental results, large differences exist between the calculated and experimental values. Furthermore, the deviation becomes larger as the flow velocity increases. By improving the Vazsonyi formula considering the flow velocity and introducing the distribution function, a modified pressure loss model is established, which is suitable for a higher velocity range. Then, the new model is adopted to solve one-dimensional, unsteady flow in a D6114 turbocharged diesel engine. The calculated values are compared with the measured data, and the result shows that the simulation accuracy of the pressure wave before the turbine is improved by 4.3% with the modified pressure loss model because gas compressibility is considered when the flow velocities are high. The research results provide valuable information for further junction flow research, particularly the correction of the boundary condition in one-dimensional simulation models. | WANG Wenhui LU Xiaolu CUI Yi DENG Kangyao | 2014 | Chinese Journal of Mechanical Engineering2014，27，6： | 4 |
| 2 | EFFECTS OF COOLED EXTERNAL EXHAUST GAS RECIRCULATION ON DIESEL HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE显示文摘The effects of cooled external exhaust gas recirculation (EGR) on the combustion and emission performance of diesel fuel homogeneous charge compression ignition (HCCI) are studied. Homogeneous mixture is formed by injecting fuel in-cylinder in the negative valve overlap (NVO) period. So, the HCCI combustion which has low NOx and smoke emission is achieved. Cooled external EGR can delay the start of combustion effectively, which is very useful for high cetane fuel (diesel) HCCI, because these fuels can easily self-ignition, which makes the start of combustion more early. External EGR can avoid the knock combustion of HCCI at high load which means that the EGR can expand the high load limit. HCCI maintains low smoke emission at various EGR rate and various load compared with conventional diesel engine because there is no fuel-rich area in cylinder.. | SHI Lei CUI Yi DENG Kangyao | 2007 | Chinese Journal of Mechanical Engineering2007，20，1： | 2 |
| 3 | Study on Mixed Pulse Converter(MIXPC)Turbocharging System and its Application in Marine Diesel Engines显示文摘 | Yi Cui Hongzhong Gu Kangyao Deng | 2010 | Journal of Ship Research2010，，54： | 1 |
| 4 | Research on the Power Recovery of Diesel Engines with Regulated Two-Stage Turbocharging System at Different Altitudes显示文摘 | Hualei Li Lei Shi Kangyao Deng Zuohua Huang | 2014 | International Journal of Rotating Machinery2014，，： | 1 |
| 5 | Particulate matter emission modeling based on soot and SOF from direct injection diesel engines 显示文摘 | Tan Piqiang Hu Zhiyuan Deng Kangyao | 2007 | Energy Conversion and Management2007，48，2： | 1 |
| 6 | The coupling influence of airflow and temperature on the wall-wetted fuel film distribution 显示文摘 | Yong-sheng Cheng Kangyao Deng Tao Li | 2010 | Experimental Thermal and Fluid Science2010，，34： | 1 |
| 7 | Study of Low Emission Homogeneous Charge Compression Ignition (HCCI) Engine Using Combined Internal and External Exhaust Gas Recirculation (EGR)显示文摘 | Lei Shi Yi Cui Kangyao Deng | 2006 | Energy2006，31，14： | 1 |
| 8 | Analysis ofPM composition from a heavy-duty diesel engine显示文摘 | TAN Piqiang DENG Kangyao LU Jiaxiang | 2004 | Journal of Automobile Engineering2004，218，11： | 1 |
| 9 | Particulate matter emission modeling based on soot andSOF from direct injection diesel engines显示文摘 | TAN Piqiang HU Zhiyuan DENG Kangyao | 2007 | EnergyConversion and Management2007，48，2： | 1 |
| 10 | Study of Diesel-Fueled HCCI Combustion by In-Cylinder Early Fuel Injection and Negative Valve Overlap显示文摘 | Shi Lei Deng Kangyao Cui Yi | 2005 | Journal of Automobile Engineering Proceedings of the IMechE Part D2005，219，10： | 1 |
| 11 | Study on variable geometry exhaust manifold turbocharging system for six-cylinder diesel engine显示文摘 | Wang Shaoming Deng Kangyao Cui Yi | 2011 | Journal of the En- ergylnstitute2011，84，1： | 1 |
| 12 | Variable geometry exhaust manifold turbocharging system for ve- hicle diesel engine显示文摘 | Wang Shaoming Deng Kangyao Cui Yi | 2011 | International Journal of Vehicle Design2011，56，1： | 1 |
| 13 | Preliminary study on variable geometry exhaust manitbld turbocharging system显示文摘 | Wang Shaoming Zhu Jun Deng Kangyao | 2011 | Proceedings of the Institution of Mechanical Engineers Part D Journal of Automo- bile Engineering2011，225，8： | 1 |
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