Session: 01-01: Valves and Actuators

Paper Number: 138718

138718 - Reduced-Order Discharge Area Surrogate Model of Claw-Shaped Notch Hydraulic Spool Valve 

Abstract: 

The non-road mobile machinery (NRMM), e.g., loader and tractor, is in urgent demand for energy conservation. As the core element of the NRMM, the hydraulic spool valve has a noticeable pressure drop across the valve port under the condition of high pressure and great flow rate, especially with high-order notches, which causes large pump energy losses through heat dissipation. At present, lacking relevant studies of the coupling relationship between high-order notch structure and pressure drop leads to design challenges in optimizing notch matching scheme. To obtain in-depth understanding of the high-order notch optimization problem, this paper introduces a reduced-order discharge area surrogate model (RO-DASM) for claw-shaped notch (CSN) hydraulic spool valves based on computational fluid dynamics (CFD) analysis and Kriging model. This RO-DASM model is used exclusively to predict the flow rate-pressure drop (FR-PD) characteristics of the CSN hydraulic spool valve under the ultimate saturation flow rate condition. CFD results indicate that the raised RO-DASM model achieves a credible forecast for pressure drop with an average relative deviation below 5% under the flow rate of 250, 350, and 450 L/min. The suggested model realizes the approximate expression of the CSN effectively and may be operated to various types of high-order notches flexiblely.

Presenting Author: Beichen Ding Sun Yat-sen University

Presenting Author Biography: Beichen Ding received the Ph.D. degree in mechanical engineering from the University of Bath, Bath, U.K., in 2019. He joined Sun Yat-sen University, Shenzhen, China, as an Assistant Professor, where he is currently an Associate Professor in the School of Advanced Manufacturing. His current research interests include actuation and motion control of smart machine systems, adaptive control for nonlinear systems.

Authors:

Yuhang Zhang Sun Yat-sen University
Beichen Ding Sun Yat-sen University
Guishan Yan Sun Yat-sen University
Chao Ai Yanshan University