Study of the main operational indicators of a self-propelled sprayer when spraying wheat and sunflower

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Abstract. An analysis has been made of some operational indicators of a self-propelled sprayer for spraying wheat and sunflower. The data in this study have been gathered and excerpted by the telematic system JD Link. It has been established from the obtained data that 66% of the area when spraying wheat (field А) and 46% of the area when spraying sunflower (field В) had been sprayed at a pre-set consumption rate of 150 l/ha. When spraying wheat (field А) it is evident that the actually applied consumption rate is 147.42 l/ha with actually applied amount of 8563.2 l, while when spraying sunflower (field В) the actually applied consumption rate is 148.33 l/ha with actually applied amount of 11908.10 l. It has been established that the engine rotations in a working engine are almost the same for both fields – 2485.93 min-1 in field А and 2495.55 min-1 in field В; at idle time the rotations had been the following: when spraying the field with wheat 1481.42 min-1, and when spraying the field with sunflower they were 15 % lower, i.e. 1253.83 min-1. The meane coefficient of engine utilization of the self-propelled sprayer when working, i.e. spraying wheat (field A) has been found to be 58.90%, and when spraying sunflower (field В) it has been 63.60%. From the results obtained it is evident that the consumed amount of diesel in field A has been 28.86% lower that in field B, respectively, with the average diesel consumption in field A being 7.27% lower than in field В.