The National Renewable Energy Laboratory's (NREL) process development unit has been operating since 1995 to test technology to convert lignocellulosic biomass to fuel ethanol. Following this type of testing, a pre-commercial scale engineering demonstration is likely to be needed to demonstrate...

The need for alternative and renewable transportation fuels continues to be high on the nation's agenda. Substituting these fuels for petroleum can reduce dependence on foreign oil imports, improve air quality, and mitigate greenhouse gases. Renewable fuels offer the same advantages as...

The effects of ethanol addition to gasoline on an SI engine performance and exhaust emissions are investigated experimentally and theoretically. In the theoretical study, a quasi-dimensional SI engine cycle model, which was firstly developed for gasoline-fueled SI engines by author, has been...

Vegetable oils pose some problems when subjected to prolonged usage in compression ignition engines because of their high viscosity and low volatility. The common problems are poor atomization, carbon deposits, ring sticking, fuel pump failure, etc. Converting the high viscosity vegetable oil...

The paper evaluates and discusses the combustion characteristics of electrolytically produced stoichiometric hydrogen-oxygen mixtures under constant volume adiabatic conditions. The results will be used in the preliminary design of a combustion chamber of a hydrogen-oxygen fuelled engine....

Oil seed plants have been one of the biomass sources of fuel. Vegetable oils may be employed in CI engines as an alternative fuel. In this study, diesel fuel properties of sunflower oil were determined and long term engine tests of sunflower oil were performed. Engine tests were conducted at a...

An experimental investigation of emissions characteristics of lower–higher molecular mass alcohol blended gasoline fuels is presented in this paper. The alcohol component of the blends consisted of methanol, ethanol, propanol, butanol and pentanol. Apparatuses used in the present study were a...

One of the major problems for the successful application of gasoline–alcohol mixtures as a motor fuel is the realization of a stable homogeneous liquid phase. To overcome this problem, a new carburetor was designed. With the use of this new carburetor, not only the phase problem was solved but...

The effect of fuel inlet temperature on performance, emission and combustion characteristics of a diesel engine is evaluated. A single cylinder direct injection diesel engine developing a power output of 2.8kW at 1500rev/min is tested using preheated animal fat as fuel. Experiments are conducted...

Advances in renewable alternative biomass-based fuel technologies make their commercialization likely within a decade. Substituting fuels derived from biomass for fossil fuels can reduce dependence on petroleum use, improve air quality, mitigate global warming, and strengthen a weak farm...