|Table of Contents|

Calculation method of external characteristic for sheet-metal hydraulic torque converter(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2015年01期
Page:
74-81
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Calculation method of external characteristic for sheet-metal hydraulic torque converter
Author(s):
HUI Ji-zhuang;  ZHANG Guang-hui;  NIE Chun-peng;  LIU Qiong
Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education, Chang’an University, Xi’an 710064, Shaanxi, China
Keywords:
vehicle engineering;  hydraulic torque converter;  external characteristic;  three-dimensional flow field;  torque coefficient;  nominal torque;  average error
PACS:
U463.22
DOI:
-
Abstract:
The signal processing and hydraulic system of original test bench was improved, and the traction test of YJH315 sheet-metal hydraulic torque converter was carried out. Based on the numerical calculation method of three dimensional flow field, the angular momentum equation, torque equation and the calculation method of performance parameter of external characteristic for YJH315 sheet-metal hydraulic torque converter were put out. The efficiencies, torque coefficients and nominal torques under different rotating speed ratios were gotten by using MATLAB simulation software and measured test respectively, and simulation result and test result were compared. Analysis result shows that when rotating speed ratio is from 0 to 0.9, the maximum efficiency is 0.82 under test condition, the value is 0.82 under simulation condition, and the maximum error of efficiency is about 2%. The maximum torque coefficient is 2.41 under test condition, the value is 2.29 under simulation condition, and the maximum error of torque coefficient is about 3%. The maximum nominal torque is 28.7 N·m under test condition, the value is 27.3 N·m under simulation condition, and the maximum error of nominal torque is about 3%. All the errors of three indexes are within the acceptable range, so the proposed calculation method of external characteristic for sheet-metal hydraulic torque converter is feasible. 1 tab, 22 figs, 21 refs.

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Last Update: 2015-02-25