International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

They are investigated qualitative indices of a grain harvester New Holland CX8060 at sesame harvesting. The sesame genotype 4083 is used for experiments. It is developed at IRGR – Sadovo (Bulgaria) and has non dehiscent capsules at maturation. The tested harvester reaches seed’s purity of 84,4 % and loses up to 22%, two-thirds from which are due to the header. The high seed’s humidity of 14,4% has been the main reason for decreasing their germination capacity from 20 to 50 % by the harvester. Generally, the grain harvester does not met requirements at sesame harvesting at Bulgarian conditions, therefore is recommended developing a specialised unit for this agricultural operation.

Harvesting of oil seed rape and avoiding of big grain losses require specific adjustments of the machine. The basic level of grain machine losses comes from the entrance device (header) added the losses from the following up devices in accordance of the applying technological scheme. The mean feature for each device is its exponential character, which means, that they are very sensitive to the parameter changes, from which they depends on. By suitable prescription of the technological adjustments and adequate selection of the machine type those losses can be reduced below the agritechnical requirements.

Harvesting of oil seed rape and avoiding of big grain losses require specific adjustments of the machine. The basic level of grain machine losses comes from the entrance device (header) added the losses from the following up devices in accordance of the applying technological scheme. To reduce the seed losses into the harvester it is recommended to operate with the header in accordance with the rotor or hybrid type thresher-separator device.