1. Modernizing the
Opposed-Piston, Two-Stroke
Diesel Engine for Clean,
Efficient Transportation
Fabien Redon
VP, Performance and Emissions
Development
October 30, 2012

2. Opposed-Piston, Two-Stroke CI Engine
10-20% lower fuel
consumption
 Favorable surface area/volume
reduces heat transfer
 Two-stroke cycle results in
leaner combustion and shorter
combustion duration
Large λ=1 isosurfaces Unique swirl/ tumble ratio
节省10-20% 燃油
 具备优势的表面面积/体积有利减
少传热
 二冲程循环可精简燃烧，缩短燃烧
的持续时间
大λ=1 等值面 独特的涡流/滚流比
©2012 Achates Power, Inc. All rights reserved. 1

3. 50-Hour Preliminary Durability Assessment at Rated Power
Results
 Stable brake torque, BSFC, emissions
 Low and stable oil consumption
 Excellent early durability – no
measurable wear
结果
 稳定的制动扭矩、BSFC和排放
 低且稳定的油耗
 良好的早期耐用性– 无可测磨损
©2012 Achates Power, Inc. All rights reserved. 2

4. References and Publications
Available on www.achatespower.com
 Modernizing the Opposed-Piston Engine for More Efficient Military Ground Vehicle
Applications (Ground Vehicle Systems Engineering and Technology Symposium 2012)
 Low Emissions, Rapid Catalyst Light-Off Capability and Fuel Efficiency for Upcoming
Emissions and CAFE Regulations with an Opposed-Piston, Two-Stroke Diesel Engine
(Emissions 2012)
 Cylinder Cooling for Improved Durability on an Opposed-Piston Engine (SAE World
Congress 2012)
 Oil Consumption Measurements for a Modern Opposed-Piston Two-Stroke Diesel
Engine (ASME Internal Combustion Engine Fall Technical Conference 2011)
 The Renaissance of the Opposed-Piston Two-Stroke Diesel Engine for Commercial
Applications (The Working Process of the Internal Combustion Engine 2011)
 Thermodynamic Benefits of Opposed-Piston Two-Stroke Engines (SAE ComVec 2011)
 The Achates Power Opposed-Piston Two-Stroke Engine: Performance and Emissions
Results in a Medium-Duty Application (SAE ComVec 2011)
 Opposed-Piston Two-Stroke Diesel Engine – A Renaissance (SIAT 2011)
©2012 Achates Power, Inc. All rights reserved. 3

5. 参考文献以及出版物
详情请参考 www.achatespower.com/chinese
 现代化对置活塞式发动机在军用地面汽车中更有效的应用 (2012地面汽车系统工程和技术研讨
会)
 即将发布的排放和CAFE法规：关于对置活塞式二冲程柴油发动机的低排放、快速催化
剂点火能力以及燃料效率 (2012排放研讨会)
 汽缸冷却：提高对置活塞式发动机的耐久性 (2012年SAE国际汽车年会)
 现代化对置活塞式二冲程柴油发动机的油耗测量 (2011年ASME内燃机秋季技术大会)
 对置活塞式二冲程柴油发动机在商业应用的复兴 (2011年内燃机工作过程)
 对置活塞式二冲程发动机的热力学优势 (2011年SAE商用车工程大会)
 对置活塞式二冲程发动机：在中型车应用中的性能和排放表现 (2011年SAE商用车工程大会)
 对置活塞式二冲程柴油发动机——发动机的一次复兴 (SIAT 2011)
©2012 Achates Power, Inc. All rights reserved. 4

6. For More Information
欲知更多信息
redon@achatespower.com
+1 858.535.9920, ext. 286
www.achatespower.com
www.achatespower.com/chinese
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