Characteristics of Powershift Gear of Agricultural Tractors

Abstract

This paperwork paper presents and analises the functioning of one main tractor assemblies, precisely the transmission. This includes and it is applied to a technologically advanced gearbox solution such as Full PowerShift. This type of gearbox is the most represented currently on the market because it is transmission without interruption of power flow. Also, there will be adequate proportional solenoid valve that is an integral part of the transmission. With its construction and function, it provides specificity in gear changes. Changing gears without interrupting the power stream, during transportation does not result in stopping the tractor and changing the engine mode due to load and nominal power of machine. The overrun and in between struggle of manufacturers for the most efficient and rational solution today has led to the offer of an extremely wide range of various gearboxes. Gearboxes with different electronical elements give different exploatations characteristics. In this way, they form differential types of gearboxes, which different so much that it is almost impossible to capture them in a proper analysis.

Ovaj rad daje prikaz i analizu funkcionisanja jednog od traktorskih sklopova, tačnije transmisije. To se odnosi na tehnološki napredno rešenje menjačkih sklopova kao što je Full PowerShift. Ovaj tip menjača je najzastuplјeniji trenutno na tržištu jer je menjač bez prekida toka snage. Takođe, biće reči i o proporcionalnom solenoidnom ventilu koji je sastavni deo ove transmisije. Svojom konstrukcijom i funkcijom omogućava specifičnost u promeni stepena prenosa. Promena stepeni prenosa bez prekida toka snage, u transportu nema za posledicu zaustavlјanje traktora i promene režima rada motora. Konkurencija proizvođača za najefikasnijim i najracionalnijim rešenjem uslovila je danas ponudu izuzetno širokog spektra razičitih menjačkih sklopova. Menjački sklopovi sa upotrebom različitih elektronskih elementa daju različite eksploatacione karakteristike. Na taj način formiraju pojedine tipove menjača, koji se u tolikoj meri razlikuju da ih je skoro nemoguće obuhvatiti jednom analizom.