基于失重法的汽车油耗检测仪器设计1.doc

本科学生毕业设计 基于失重法的汽车油耗检测仪器设计 院系名称： 汽车与交通工程学院 专业班级： 车辆工程 学生姓名： 指导教师： 职 称： 教授 The Graduation Design for Bachelors Degree Design of Automobile Oil Consumption Instrumentation Based on Weightlessness Candidate： Specialty：Vehicle Engineering Class：07-1 Supervisor：Prof. Heilongjiang Institute of Technology  摘 要 随着我国汽车保有量的不断增加，汽油、柴油等非再生资源的逐渐减少，加之环境保护意识的逐渐加强，人们更加关心车辆油耗，要求限制车辆用油量的呼声越来越强。研制能快速、准确测量汽车在各种工况下油耗的仪器，已成为一项重要的课题。 文中研制的智能型汽车油耗检测仪器，利用失重法原理，结合国内外发动机油耗智能测试技术的研究水平和发展趋势，采用传感器技术、单片机控制技术和显示技术。 主要内容包括：根据油耗测试系统的功能要求，进行油耗检测系统硬件的设计与选择，建立了汽车油耗检测系统数学模型，进行了油耗检测系统软件模块的设计，同时提出了系统抗干扰的相关措施，包括软件和硬件两方面，分析了油耗检测系统所采用的理论的可行性，并进行了油耗检测系统的误差分析。 智能油耗仪在单片机的控制下，通过传感器送来的信号，在控制软件的支持下，能对汽油机、柴油机在室内进行静态和动态油耗测试，能测量汽车的平均油耗和瞬时油耗。解决了国内油耗检测产品与国外相比测试精度相对较低、成本较高等问题。能对新生产车、营运车辆进行燃料经济性检测和评价，能满足科研院所、车辆制造、使用和维修单位、大专院校试验教学等需要，应用前景广阔。 全套图纸，加 关键词：油耗；智能；单片机；检测；传感器  ABSTRACT With the increasing of the automobile quantity people own, the unproducing resources such as gasoline, dieal have decreased gradually. Together with people’s envioroment protection consciousness that strengthens gradually, more attention is focused on the vehicle fuel consuming, calling about limiting vehicle fuel consuming becomes more and more fierce. research the equipments that call quick and accurate measuring gas-consuming under all working conditions，which becomes a very important topic． The research on monitoring indtruments, on the basis of the weightlessness principle, combining with the domestic and foreign research level and development trend, adoping sensing technology, single chip microcomputer control technology and display technology. The main content includes gas-consuming detecting system’s hardware design and selection．Automobile gas-consuming detecting system mathematics model were included, gas consuming detecting system softwares design. Diagnose the practicing performance of the theory that gas-consuming detecting system Was adopted and the theor