主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 48 ›› Issue (2): 141-146.DOI: 10.16638/j.cnki.1671-7988.2023.02.026

• 测试试验 • 上一篇    

某型工程车行走异常问题分析与改进方法

鲁奕岗，朱海英   

  1. 贵州詹阳动力重工有限公司
  • 出版日期:2023-01-30 发布日期:2023-01-30
  • 通讯作者: 鲁奕岗
  • 作者简介:鲁奕岗（1983—），男，硕士，工程师，研究方向为特种专用车辆，E-mail:luyigang@jonyang.com。

Analysis and Improvement of Abnormal Driving of a Certain Type of Construction Vehicles

LU Yigang, ZHU Haiying   

  1. Guizhou Jonyang Kinetics Company Limited
  • Online:2023-01-30 Published:2023-01-30
  • Contact: LU Yigang

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摘要： 某型工程车在出厂试验过程中出现了行走异常和变速箱油温高的现象，其特征包括： 行驶约 20 km～50 km 踩油门出现行走加速减慢现象，后相继出现变速箱压力低、油温高报警 等情况。针对该现象，进行拆机检查并采用故障树分析法以及机理计算分析，得出由于压力 监测点未考虑压降导致该现象。通过故障复现，将主机修复并调整换挡压力，最后进行验证 证实问题得以解决。

关键词: 行走异常；变速箱油温高；压降；故障树分析法；工程车

Abstract: In the process of delivery test of a certain type of truck, the phenomenon of abnormal driving and high oil temperature of gearbox appeared. The characteristics include: when driving about 20～50 kilometers, the phenomenon of walking acceleration and deceleration appears when stepping on the accelerator, and the situation of low pressure and high oil temperature of gearbox alarm successively appears. In view of this phenomenon, the disassembly inspection is carried out and the fault tree analysis and mechanism calculation and analysis are used. It is concluded that the drop of pressure is not considered in the pressure monitoring point, which leads to this phenomenon. Through the fault recurrence, the main engine is repaired and the shifting pressure was adjusted. Finally, the problem is verified to be solved.

Key words: Abnormal driving; High oil temperature of gearbox; Pressure drop; Fault tree analysis; Construction vehicles