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Show Sunflower oil has been the target of most of the experimentation. The sunflower plant is very adaptable to most climates and soil types. The sunflower seed is of two basic types, oil and non-oil. The non-oil seed is used for human consumption, while the oil seed is primarily used for high quality cooking and salad oil (11). The results from burning sunflower oil are promising. Engine performance for sunflower oil is similar to that of diesel fuel, except for slightly increased fuel consumption (2, 12, 13). Atomization of sunflower oil is much poorer than that of diesel fuel (4). Long-term effects have been decreased engine life due to deposit build up in the combustion chamber and the thickening of the lubricating oil. Other agricultural oils, such as peanut (15, 16), cottonseed (2), soybean (9, 16), and safflower (12, 16) have been used in the C.I. engine. They exhibit the same general performance characteristics and long-term faults as sunflower oil. Atomization The process of atomization is a key factor in combustion in the C.I. engine. A literature search for the process of atomization led to the important parameters in atomization theory. These parameters are Reynold's number (hereafter referred to as Re), Weber-Reynold's ratio (hereafter referred to as TT ) , viscosity and density ratios, and spray pattern parameters. Theoretical studies for predicting mean drop size were also found in the literature (17, 18) . The spray pattern parameters found are functions of actual drop size distribution and penetration depth of an actual injection process. To obtain these usually involves expensive construction of a test combustion chamber and injection system and requires either high speed photography (19) or laser technology (20, 21) for the measurements. -13- |