Alcohol fuel

About: Alcohol fuel is a research topic. Over the lifetime, 2030 publications have been published within this topic receiving 42757 citations.

Net Energy Analysis of Corn Fuel Ethanol Life Cycle

Abstract: Energy efficiency(net energy gain or energy ratio) of corn-based ethanol as a substitute for fossil fuel is an important criteria for assessing its sustainability.The method of net energy analysis for fuel ethanol from corn was developed based on principles of life cycle inventory(LCI) analysis.For the production state of fuel ethanol from summer corn in China,energy efficiency of the corn fuel ethanol life cycle system was estimated and its main influence factors were identified,and energy saving effect of some ethanol blended gasoline fuels was discussed.Corn fuel ethanol has certain energy benefits.The energy ratios for dry and wet milling process were 1.25 and 1.04 respectively.Through comparison of energy inputs in corn fuel ethanol life cycle,fossil energy inputs of corn production and ethanol conversion processes were identified as the most important,and therefore nitrogen fertilizer,electivity and diesel used in corn farming and energy consumption of distillation and dehydration process in ethanol production could be known as the most influential factors for the energy benefit of corn fuel ethanol.

Influence of fuel injection timing and nozzle opening pressure on a CRDI-assisted diesel engine fueled with biodiesel-diesel-alcohol fuel

Abstract: Waste frying oil (WFO) is used as a feedstock for biodiesel synthesis due to its worldwide availability and low cost. WFO has the drawback of higher free fatty acid (FFA) presence and higher viscosity that lead to choking of the injector and lower the engine performance respectively. Biodiesel was synthesis through transesterification process using sodium methoxide catalyst. The fuel modification and engine modification was adopted to increase the engine combustion, performance characteristics and reduce the emissions characteristics. In fuel modification, the blend quantity was varied from 0% to 100%. The blend has a mixture of above 75% of biodiesel, 5% of diesel and lesser than 20% of pentanol and hexanol content. In engine modification, the fuel injection timing (FIT) was varied from 19° to 27°CA bTDC in the range of 2°CA and nozzle opening pressure (NOP) varied from 200 to 600 bar in the range of 100 bar. The B90-D5-P5, B85-D5-P10, B90-D5-H5 and B85-D5-H10 blends were selected for engine study, remaining blends were eliminated because of lower calorific value and lower flash and fire point. The engine experiment was carried out at full load condition on a common rail direct injection (CRDI) system assisted diesel engine. The results showed that the B90-D5-H5 blend was obtained the maximum thermal efficiency of 35.4% at NOP of 500 bar and FIT of 27°CA bTDC. B85-D5-P10 blend has the minimum CO and smoke emission of 0.04% vol. and 1.517 FSN at NOP of 500 bar and FIT of 27°CA bTDC respectively. The minimum UBHC and maximum NO emission of 10 and 1946 ppm was obtained in B85-D5-P10 blend at NOP of 600 bar and FIT of 27°CA bTDC respectively. The B90-D5-H5 blend has obtained the maximum heat release rate of 44.68 J/°CA at NOP of 500 bar and FIT of 27°CA bTDC. Thus, this research work was discusses the feasibility of recommending biodiesel-diesel-alcohol fuel to fulfill the future energy demands.

Alcohol fuel dual-catalyst treatment apparatus and method

Abstract: Internal combustion engine fuel treatment including in sequence the steps as follows: providing a dual catalyst reactor having a dehydration catalyst and dissociation catalyst providing alcohol, vaporing the alcohol to form alcohol vapor, dehydrating a portion of the feed alcohol vapor over the dehydration catalyst to form a first gaseous mixture including ethers, residual alcohol vapor and water, dissociating the residual alcohol vapor over the dissociation catalyst, to form a second gaseous mixture including H 2 and CO, conveying the second gaseous mixture to the internal combustion engine, whereby the engine is operated on the second gaseous mixture.