COMPARISON OF STRATIFIED AND HOMOGENEOUS COMBUSTION IN A DIRECT-INJECTED TWO-STROKE ENGINE FOR SNOWMOBILE APPLICATIONS

机译：直喷式两冲程发动机的分层燃烧和均质燃烧的比较

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Gasoline direct injection (GDI) two-stroke engine technology has been developed for use in snowmobile applications. Applying GDI to a two-stroke engine significantly reduces emissions of unburned hydrocarbons and improves fuel economy by reducing or eliminating the short circuiting of fuel that occurs in conventional carbureted two-stroke engines. The GDI design allows for two different modes of combustion, stratified and homogeneous. Stratified combustion is typically used during idle and light to moderate loads at low engine speeds while homogeneous combustion is used at moderate to high loads and medium to high engine speeds. This work presents the process and results of determining which mode of combustion provides better fuel economy during cruise point operation, and where the transition from stratified to homogeneous combustion should occur in snowmobile operation. Results show that homogeneous calibration is the superior mode of combustion for the cruise points of a snowmobile.

机译：汽油直喷（GDI）二冲程发动机技术已经开发出来，可用于雪地摩托应用。通过将GDI应用于二冲程发动机，可以减少或消除传统的化油二冲程发动机发生的燃料短路，从而显着减少未燃烧碳氢化合物的排放并提高燃油经济性。 GDI设计允许两种不同的燃烧模式：分层燃烧和均质燃烧。分层燃烧通常在怠速和轻度至中等负荷下以低发动机转速使用，而均质燃烧在中度至高负荷以及中速至高速时使用。这项工作提出了确定巡航点操作期间哪种燃烧方式可提供更好的燃油经济性以及在雪地摩托操作中应从分层燃烧过渡到均质燃烧的位置的过程和结果。结果表明，均质校准是雪地摩托巡航点的最佳燃烧方式。

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《2008 spring technical conference of the ASME Internal Combustion Engine Division : Advanced combustion ; Emission control systems ; FUELS ...》|2008年|37-45|共9页
会议地点 Chicago IL(US);Chicago IL(US)
作者
Justin Johnson; Karen R. Den Braven;
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University of Idaho Department of Mechanical Engineering PO Box 440902 Moscow, Idaho 83844-0902 USA;

University of Idaho Department of Mechanical Engineering PO Box 440902 Moscow, Idaho 83844-0902 USA;

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2. Soot Observations and Exhaust Soot Comparisons from Ethanol-Blended and Methanol-Blended Gasoline Combustion in a Direct-Injected Engine [J] . Ravi Teja Vedula, Yifan Men, Cyrus Atis, SAE International Journal of Fuels and Lubricants . 2018,第2期

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3. Measurement of short-circuiting and its effect on the controlled autoignition or homogeneous charge compression ignition combustion in a two-stroke poppet valve engine [J] . Yan Zhang, Hua Zhao Proceedings of the Institution of Mechanical Engineers, Part D. Journal of Automobile Engineering . 2012,第8期

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4. COMPARISON OF STRATIFIED AND HOMOGENEOUS COMBUSTION IN A DIRECT-INJECTED TWO-STROKE ENGINE FOR SNOWMOBILE APPLICATIONS [C] . ASME Internal Combustion Engine Division technical conference . 2008

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5. Topological Development of Homogeneous-Charge and Stratified-Charge Flames in an Internal Combustion Engine. [D] . Lillo, Peter Mark. 2016

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6. On PMWs and two-stroke engines. [O] . W. Bell, A. Yassi, D. C. Cole 1998

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8. Stratified Charge and Homogeneous Charge Flowfields in Natural Gas Fueled Rotary Engines. Interim Report on Task 2.1.7 'Combustion/Stratification Studies' [R] . Abraham, J. 1988

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COMPARISON OF STRATIFIED AND HOMOGENEOUS COMBUSTION IN A DIRECT-INJECTED TWO-STROKE ENGINE FOR SNOWMOBILE APPLICATIONS

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