Tractor hydraulic power is used on a wide range of agricultural implements; however, the availability of operational hydraulic data at points other than full engine throttle position is limited. Operators could utilize this hydraulic data to maximize field efficiency and minimize machinery costs when determining suitable machinery for field operations. A field usable hydraulic test apparatus ca...

a r t i c l e i n f o Facing the environment problems, the improvement on the efficiency of the construction machinery such as the excavator and wheel loader is highly demanded. The hybrid power systems used in automobiles have been adapted into the construction machinery. This paper first analyzes the difference between the hybrid powered automobile vehicle and the hybrid powered construction ...

The conventional load-sensitive hydraulic drive chassis system for agricultural machinery uses a combination of engine and pump, which cannot adjust the control strategy according to working conditions. It does not meet current trend energy-saving emission reduction. To this end, an electro-hydraulic machinery, permanent magnet synchronous motor quantitative is proposed. A variable LS different...

Hydraulic systems are widely used in industry because of the advantages of their small size-to-power ratios and their ability to produce very large linear force and torque. There are tendencies for compact electro-hydraulic systems which deliver powerful, linear movement having hydraulic oil circulation only when operating. This paper investigates directly driven hydraulic setup for non-road mo...

The paper discusses electrohydraulic variable supply systems in different design concepts. In the forefront of discussion are concepts with constant and speed-controlled electric motor combination pumps, implemented within control strategies.