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Dedicated exhaust gas recirculation is an attractive way to improve the performances of internal combustion engines. Hydrogen (H2) and carbon monoxide (CO) are primary combustible components in the reforming cylinder. Detailed knowledge of the effects of H2/CO on knock tendency and intensity and even lean limit is essential for the better utilization of this sort of technologies. In this paper, the...
Compared to natural gas spark-ignition (SI) combustion, dual-fuel (DF) mode could achieve higher indicated thermal efficiency (ITE). The major disadvantages of natural gas DF combustion are rough combustion at high load, high CO and total hydrocarbon (THC) emissions, and low natural gas substitution rate. In the present work, a comparison of using polyoxymethylene dimethyl ethers (PODEn) and diesel...
A novel approach was proposed to promote CO2 removal from the anode catalyst layer of a liquid-fed passive direct methanol fuel cell (DMFC) by introducing Lorentz force via magnetic field integrating. Due to the promoted removal of CO2 micro-bubble, the physical block of triple-phase boundary in the anode catalyst layer was reduced evidently. CO2 removal was promoted through introducing forced convection...
In this paper, several practical operating performances were evaluated with a novel small passive direct methanol fuel cell (DMFC) stack in different potential application conditions. Combined with a DC–DC convertor, the fuel cell can realize a much more stable constant voltage output; combined with super capacitors, it can provide a large current pulse discharge. After a reproducible operation of...
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