摘要.wps

1、 黑 江工程 院本科生 龍 學(xué) 畢業(yè)設(shè)計(jì)摘 要隨著車輛動(dòng)力技術(shù)的提高和車輛向高速、 重載、 自動(dòng)化方向的發(fā)展，車輛的安全性能受到了人們的普遍重視，從而對(duì)車輛制動(dòng)系統(tǒng)的可靠性、穩(wěn)定性和操縱性提出了更高的要求，車輛制動(dòng)裝置的性能優(yōu)劣直接關(guān)系到車輛的機(jī)動(dòng)性和行車安全。本論文針對(duì)一種新型 ZL80 裝載機(jī)液力變矩器進(jìn)行了系統(tǒng)、深入地研究。本文基于束流理論，建立了 ZL80 裝載機(jī)液力變矩器在牽引工況和制動(dòng)工況的數(shù)學(xué)模型，對(duì)液力變矩器的原

2、始特性和凈外特性進(jìn)行了理論計(jì)算和分析，為研究該液力元件和發(fā)動(dòng)機(jī)共同工作特性提供了理論依據(jù)。本文基于 MATLAB 設(shè)計(jì)了 ZL80 裝載機(jī)液力變矩器，研究了該液力元件在車輛下長(zhǎng)坡連續(xù)制動(dòng)工況和緊急制動(dòng)工況的制動(dòng)性能，從而使得液力制動(dòng)力得到充分利用，改善和提高了車輛的制動(dòng)性能，實(shí)現(xiàn)了車輛的恒扭矩制動(dòng)?；谝陨戏治?，對(duì)新型 ZL80 裝載機(jī)液力變矩器進(jìn)行臺(tái)架試驗(yàn)，可得到該液力元件的原始特性、閉鎖離合器閉鎖過(guò)程充油動(dòng)態(tài)特性和在此過(guò)程中液力變矩

3、器的動(dòng)態(tài)性能、閉鎖離合器結(jié)合充油動(dòng)態(tài)特性。關(guān)鍵詞：ZL80 裝載機(jī)液力變矩器；閉鎖；液力減速器；束流理論；特性 I黑 江工程 院本科生 龍 學(xué) 畢業(yè)設(shè)計(jì)ABSTRACTAlong with the improvement of vehicle dynamical technology and thedevelopment of vehicle to high speed, great burden and autom

4、atization.People attach importance to security of vehicle widely. Higher requests areput forward to reliability, stability and manipulability of vehicle brakesystems. The excellent or coarseness of vehicle brake

5、 systems influences theflexibility and security of vehicle directly. This thesis aims to a new ZL80loaders hydraulic torque converter system and in-depth research.Based on the beam theory, a ZL80 loaders hydraulic torque

6、 converter intraction condition and braking modes of the mathematical model,Of theconverter's original characteristics and net external characteristics, theoreticalcalculation and analysis for the study of t

7、he hydraulic components and enginejoint work characteristics provides theory basis.This paper was designed based on MATLAB ZL80 loaders hydraulictorque converter, studied the hydraulic components in vehicle fo

8、r brakingcondition and long slope of the emergency brake conditions brakingperformance, thus make the hydraulic braking force can be fully used,Toimprove and enhance the vehicle braking performa

9、nce and to realize thevehicle's constant torque braking.Based on the above analysis, the new ZL80 loaders hydraulic torqueconverter bench test, can get the hydraulic components of originalcharacteristics

10、, atresia clutch atresia process dynamic characteristic and oilfilled in this process hydraulic torque converter dynamic performance, atresiaclutch oil filled with dynamic characteristics.Key words: ZL80 loaders hydr