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Biodiesel is a promising alternative fuel for diesel engines. Polyoxymethylene Dimethyl Ethers (PODE), which features high cetane number, low viscosity and high oxygen content, is often used as a fuel additive. In this study, PODE is blended with biodiesel as a major components of the fuel to improve the low-temperature flow properties and the viscosity of biodiesel, aiming to achieve superior engine...
GDP is a blend fuel containing gasoline, diesel, and polyoxymethylene dimethyl ethers (PODE). Previous study has shown that by combining premixed ratio and high fuel oxygen content, GDP partially premixed combustion ignition (PPCI) broke the trade-off between NOx and soot with moderate exhaust gas recirculation (EGR) while maintaining high engine efficiency. In this work, multiple premixed compression...
Occurrence of sporadic super-knock is the main obstacle in the development of advanced gasoline engines. By utilizing a rapid compression machine, events of pre-ignition and super-knock in a closed system under high temperature and high pressure were captured by synchronous high-speed direct photography and pressure measurement, with the results demonstrating that the mechanism of super-knock is constituted...
A novel fuel named the Full Distillation Fuel (FDF) is proposed in this paper to lower the full life-cycle cost of the end use of petroleum-based fuels and reduce emissions. FDF is a liquid fuel and its distillation temperature range covers gasoline, kerosene and diesel fuel. There is no need to employ different distillation and refinery processes to produce gasoline and diesel fuels; instead, a single...
Homogeneous charge compression ignition (HCCI) has challenges in ignition timing control, combustion rate control, and operating range extension. In this paper, HCCI combustion was studied in a two-cylinder gasoline direct injection (GDI) engine with negative valve overlap (NVO). A two-stage gasoline direct injection strategy combined with negative valve overlap was used to control mixture formation...
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