Design Of Two-Stage On/Off Cartridge Valves For Mobile Applications

Abstract

Cartridge valves are widely used in mobile applications, where they are screwed in manifolds, to realize opportune circuit layouts. These valves are quite simple in operation but require a sophisticated design in order to meet all the requirements needed in the mobile machines. Typically, the design process is developed realizing a first design concept and some prototypes and experimentally testing them; after this, the designer chases the optimal performances requested to the valve with a trial and error approach on the prototypes, involving high time and cost resources. In this paper an alternative design procedure is proposed, which involves dedicated simulations to analyze the main critical issues regarding the cartridge valve object of the study. Modelling and simulations here have been considered as steps into the design process of a new valve, which satisfies the requirements and well adapt to the necessities to operate at higher flow and pressure levels without compromising its performances. In that way, the number of prototypes, realized to validate the numerical results and verify the design process, has been considerably reduced, together with related time and costs

Valve Geometry and Flow Optimization through an Automated DOE Approach

“…Several examples of valve optimization are available in literature: some of them focused on the fluid dynamic, others on structural aspects [1][2][3][4][5][6][7][8][9][10][11].…”

“…Zardin et al [9] studied valves for mobile applications via a lumped parameter approach. They proposed an innovative design procedure to optimize valve design.…”

Effects of Temperatures and Viscosity of the Hydraulic Oils on the Proportional Valve for a Rice Transplanter Based on PID Control Algorithm

“…Recently, hydraulic proportional valves have been extensively used in most controlling the pressure or flow for automobiles industries [7][8][9][10]. Generally, they are used as flow actuators for hydraulic pistons in a higher level of control loops and for controlling the larger hydraulic valves directly, but a solenoid or an on/off valve cannot directly control this [11,12]. Over the last couple of years, many efforts have been initiated to implement proportional valves in the agricultural machinery for performance improvement.…”

The Hydraulic Power Generation and Transmission on Agricultural Tractors: feasible architectures to reduce dissipation and fuel consumption – Part 2

“…The mathematical model approach is normally based on a lumped parameter approach that permits to reduce the simulations run time of the whole circuit permitting a wide investigation of different solutions, and the utilization of optimization algorithm. Different mathematical approach can be followed when the target of the modelling is the component optimization of detailed aspects as reported in [14][15][16][17][18][19][20].…”