ความคิดเห็นที่ 23
สืบค้นมาก็ได้เท่านี้ครับ คือมันช่วยลด NOx ได้ แต่ประสิทธิภาพของเครื่องยนต์ไม่ได้เปลี่ยนแปลงไปอย่างมีนัยสำคัญ (เฉพาะเครื่องดีเซลเท่านั้น) ใครหาตัวเต็มลองเอาข้อมูลมาลงให้ดูกันก็ดีครับ
Application of Exhaust Gas Fuel Reforming in Compression Ignition Engines Fueled by Diesel and Biodiesel Fuel Mixtures
A. Tsolakis, A. Megaritis,* and M. L. Wyszynski
School of Engineering, Mechanical and Manufacturing Engineering, The University of Birmingham, Birmingham B15 2TT, U.K.
Received April 2, 2003
Revised Manuscript Received July 23, 2003
Abstract:
In this study, the application of exhaust gas-assisted fuel reforming in compression ignition engines (CI) has been investigated. Experiments were conducted in a single-cylinder direct-injection (DI) diesel engine fueled by conventional diesel and also by a biodiesel mixture. First, the effects of exhaust gas recirculation (EGR) and addition of small amounts of hydrogen on the combustion and exhaust emissions were explored. With the addition of hydrogen, the flow of the main fuel (diesel or biodiesel) was reduced to maintain constant indicated mean effective pressure (IMEP). Thus, in effect the tests involved fuel replacement by hydrogen rather than hydrogen addition. Second, the feasibility of producing hydrogen "on-board" by catalytic exhaust gas fuel reforming was examined by incorporating a laboratory reforming mini reactor in the engine exhaust system. Prototype catalysts and different reaction conditions were examined. The results from the first part of the study showed that partial replacement of the hydrocarbon fuel by hydrogen combined with EGR resulted in simultaneous reductions of smoke and nitrogen oxides emissions (NOx) without significant changes to engine efficiency. In the second part of the study, it was shown that the amount of hydrogen required to achieve these beneficial effects potentially can be produced by exhaust gas-assisted reforming of the hydrocarbon fuel.
จากคุณ :
Nexus  
- [
29 ต.ค. 50 10:22:19
]
|
|
|
