设计简介
摘 要
针对目前手动档机动车半坡起步经常出现的溜车现象，设计一种适用于手动档机动车的半坡起步辅助气动系统。包括确定起车斜坡起步辅助系统组成，确定各气动元件，根据辅助系统的工作要求对气动控制阀的结构进行设计，包括主阀芯的结构、密封件的结构等。
在分析汽车气压制动系的基本组成和工作原理的基础上，确定汽车斜坡起步辅助系统气动控制阀在汽车整个气动管路中的位置及功能，从而以通用的气动元件，设计和分析能够实现该功能的气动系统方案，并通过实验来验证该气动系统方案的合理性。设计一种汽车斜坡起步辅助系统，并对汽车斜坡起步辅助系统气动控制阀进行设计。
半坡起步辅助系统的关键技术就是系统根据制动部件的支承反力的大小和方向的变化情况自动控制驻车制动力。起步辅助系统可以彻底解决手动档机动车坡道起步时的后溜现象，有效地防止溜车产生的隐患，且不影响平地起步。所以说，半坡起步辅助系统的开发具有极其重要的意义。
关键字：汽车；坡路起步；气动控制; 传感器；起步辅助系统
ABSTRACT
According to the manual green hill starting motor vehicle often sneak car, and designed a kind of phenomenon applies to manual Gear motor vehicle green hill start auxiliary pneumatic system. Including sure start up car auxiliary system composition, slope determines various pneumatic components, according to the work of auxiliary system requirements of pneumatic control valve of the structure design, including the main valve core structure, seal structure, etc.On the analysis of car air brake the basic composition and working principle, and on the basis of sure start pneumatic auxiliary system car slope in the pneumatic pipe valves car the position and functions, thus to general pneumatic components, design and analysis can realize the function of the pneumatic system solutions, and through the experiments to verify the pneumatic system solutions of rationality. Design a car slope, and start auxiliary system car slope started auxiliary system design of the pneumatic control valves.
Slope started auxiliary system is the key technology of brake parts of supporting system according to the size of the force and the direction of the change of the automatic control system in car power. Start auxiliary system can completely solve manual started after the motor vehicle ramp slip phenomenon, effectively prevent slipped the hidden trouble of the car, and do not produce influence the ground started. So, Slope started auxiliary system development has very important significance.
Keyword：Automobile；Hill start；Pneumatic control；sensor；Started auxiliary system
目 录
摘 要 Ⅱ
第1章 绪论 1
1.1 本课题的技术要求 1
1.2 本课题主要完成的任务 1
1.3 汽车坡路起车辅助气动系统的发展现状及趋势 1
1.4 本课题的研究内容及意义 2
第2章 汽车坡路起车辅助气动系统的设计方案 4
2.1 气动系统的组成 4
2.2 气动系统的工作原理 4
2.3 气动系统的总布置设计 5
2.4 本章小结 6
第3章 汽车坡路起车辅助气动系统控制阀的设计计算 7
3.1 控制阀基本参数的确定 7
3.2 控制阀结构参数的设计计算 10
3.3 控制阀的阀芯密封力的计算 13
3.4 控制阀O型密封圈的设计计算 15
3.5 控制阀控制活塞的密封设计 19
3.6 控制阀的阀芯套杆的设计计算 22
3.7 控制阀控制活塞直径的计算校核 25
3.8 控制阀弹簧的设计计算 26
3.9 控制阀电磁阀的设计计算 32
第4章 转速传感器与力传感器的选用及安装 34
4.1 转速传感器的选用 34
4.2 扭矩感器的选用 48
4.3 本章小结 40
结 论 41
致 谢 42
参考文献 43
