节气门位置传感器检修教案

节气门位置传感器检修 公开课教案 《汽车电控发动机检修》 ———节气门位置传感器的工作原理与检修 教研组: 授课班级: 任课老师: 授课地点: 学年度第 学期 summer of masonry construction, brick requires sufficient moist. 8.6.2.6 you must take the following measures to concrete construction in summer high temperature impact on concrete a. hardening speed up, vibrating difficulties reduced bleeding, fast drying, easy to crack (plastic), high early strength, fast early hydration heat, less cooling, temperature increases rapidly, due to temperature difference cracks. B. pouring daytime high temperatures, due to the high temperature effect of concrete strength, stability, in varying degrees, on mixing processes, perfusion vibration and moisture conservation, effective measures should be taken. 2) main measures taken by a. temperature control the water temperature in your standard mix proportion of concrete 2 degrees, the concrete temperature 0.5 degrees. B. with the controlled addition of retarder agent can reduce the effects of concrete under high temperature, but make some performance degradation of concrete, so when you are using additives must be implemented upon approval by the supervising engineer. C. time control suitable for work at night, should seek to reduce the mixing time and shipping time at high temperatures. D. strengthen the conservation and high temperatures after pouring in the early days of continuous water conservation to prevent surface drying and covering thin-film wet grass bag to make it moist State in 24 hours. 8.6.3 8.6.3.1 winter construction measures in winter construction preparation 1) required winter construction materials, equipment, planning ahead of time comes into 教师课时授课计划 授课班级 授课日期 星 期 节 次 课 题 节气门位置传感器的工作原理与检修 1、掌握节气门位置传感器的作用与工作原理 2、掌握节气门位置传感器方法 教学目标 3、学会进行节气门位置传感器的检修及故障判断 4、锻炼学生的相互协作精神和养成良好的工作习惯 课 型 一体化 教学时数 重点 节气门位置传感器类型与工作原理 教材分析 难点 节气门位置传感器检测方法 教具 丰田5A发动机、节气门位置传感器、万用表。 教学方法 任务驱动法、项目教学法、讲授法、案例法 板书设计 1、完成实训 课外作业 2、查找资料:如何用示波器对节气门位置传感器进行检测? 教学后记 审阅鉴名 年 月 日 summer of masonry construction, brick requires sufficient moist. 8.6.2.6 you must take the following measures to concrete construction in summer high temperature impact on concrete a. hardening speed up, vibrating difficulties reduced bleeding, fast drying, easy to crack (plastic), high early strength, fast early hydration heat, less cooling, temperature increases rapidly, due to temperature difference cracks. B. pouring daytime high temperatures, due to the high temperature effect of concrete strength, stability, in varying degrees, on mixing processes, perfusion vibration and moisture conservation, effective measures should be taken. 2) main measures taken by a. temperature control the water temperature in your standard mix proportion of concrete 2 degrees, the concrete temperature 0.5 degrees. B. with the controlled addition of retarder agent can reduce the effects of concrete under high temperature, but make some performance degradation of concrete, so when you are using additives must be implemented upon approval by the supervising engineer. C. time control suitable for work at night, should seek to reduce the mixing time and shipping time at high temperatures. D. strengthen the conservation and high temperatures after pouring in the early days of continuous water conservation to prevent surface drying and covering thin-film wet grass bag to make it moist State in 24 hours. 8.6.3 8.6.3.1 winter construction measures in winter construction preparation 1) required winter construction materials, equipment, planning ahead of time comes into 教学过程及教学方教 学 内 容 时间分配 法 一、教学准一、教学准备 备 1、多媒体教学设备、课件、5A发动机。 (1分钟) 2、清点学生人数、填教学日志、注意学生仪表仪容。 二、复习提二、复习及提出问题 问 丰田5A—FE电控发动机冷却液传感器损坏，发动机能否启动, (3分钟) 三、教学引三、教学引入 入 故障现象:一台丰田5A—FE电控发动机故障指示灯点亮，发动机能正常 (5分钟) 着车，但怠速不稳，同时发动机在大负荷时加速无力。 任务 驱 动 请同学们调码并查阅故障码表，故障点在哪里, 故障点为:故障码显示为41。节气门位置传感器信号不良。 四、新课讲1、丰田5ATPS安装位置:节气门体(TP)上。 解 2、TPS作用:检测节气门的开度及开度变化，此信号输入ECU，控制 (28分燃油喷射及其他辅助控制。 钟) 3、TPS结构:由一个电位计和一个怠速触点组成。 实物 讲解 4、线性输出型TPS原理 1)电路图 summer of masonry construction, brick requires sufficient moist. 8.6.2.6 you must take the following measures to concrete construction in summer high temperature impact on concrete a. hardening speed up, vibrating difficulties reduced bleeding, fast drying, easy to crack (plastic), high early strength, fast early hydration heat, less cooling, temperature increases rapidly, due to temperature difference cracks. B. pouring daytime high temperatures, due to the high temperature effect of concrete strength, stability, in varying degrees, on mixing processes, perfusion vibration and moisture conservation, effective measures should be taken. 2) main measures taken by a. temperature control the water temperature in your standard mix proportion of concrete 2 degrees, the concrete temperature 0.5 degrees. B. with the controlled addition of retarder agent can reduce the effects of concrete under high temperature, but make some performance degradation of concrete, so when you are using additives must be implemented upon approval by the supervising engineer. C. time control suitable for work at night, should seek to reduce the mixing time and shipping time at high temperatures. D. strengthen the conservation and high temperatures after pouring in the early days of continuous water conservation to prevent surface drying and covering thin-film wet grass bag to make it moist State in 24 hours. 8.6.3 8.6.3.1 winter construction measures in winter construction preparation 1) required winter construction materials, equipment, planning ahead of time comes into 图 片 视频 演示 2) TPS特性:节气门开度与输出电压成正比。 TPS调整方法:节气门关闭时，VTA输出电压=0.5V 节气门全开时，VTA输出电压>4.5V 节气门关闭时IDL电压0V，节气门开度0.4mm或 ?3?，IDL电压0V。节气门开度0.8mm时，或>3?IDL 电压12V。 5、TPS检测方法: TPS万用表电阻测量 节气门全关 节气门全关 项目 VTA与E2 教学 VC与E2 IDL与E2 TPS线路电压测量 节气门全关 节气门全关 VTA与E2 VC与E2 IDL与E2 summer of masonry construction, brick requires sufficient moist. 8.6.2.6 you must take the following measures to concrete construction in summer high temperature impact on concrete a. hardening speed up, vibrating difficulties reduced bleeding, fast drying, easy to crack (plastic), high early strength, fast early hydration heat, less cooling, temperature increases rapidly, due to temperature difference cracks. B. pouring daytime high temperatures, due to the high temperature effect of concrete strength, stability, in varying degrees, on mixing processes, perfusion vibration and moisture conservation, effective measures should be taken. 2) main measures taken by a. temperature control the water temperature in your standard mix proportion of concrete 2 degrees, the concrete temperature 0.5 degrees. B. with the controlled addition of retarder agent can reduce the effects of concrete under high temperature, but make some performance degradation of concrete, so when you are using additives must be implemented upon approval by the supervising engineer. C. time control suitable for work at night, should seek to reduce the mixing time and shipping time at high temperatures. D. strengthen the conservation and high temperatures after pouring in the early days of continuous water conservation to prevent surface drying and covering thin-film wet grass bag to make it moist State in 24 hours. 8.6.3 8.6.3.1 winter construction measures in winter construction preparation 1) required winter construction materials, equipment, planning ahead of time comes into 6、常见故障 节气门位置传感器的常见故障主要是怠速触点接触不良、传感器可变电阻 阻值变化无规律。这种故障会影响发动机的怠速和加速性能，造成发动机 怠速不稳或无怠速，加速性变差或加速性时好时坏等现象。 案例 分析 案例:一辆部队的三菱帕杰罗汽车，加油时，最高车速不到60公里，试 验时加尽油门，发现最高转速不到3000转，并且在1600至2800转之间 游车，根据分析判断是TPS故障，原因是发动机处于超速断油状态，拆 下TPS检测电线路，各路电压正常。司机反映昨天曾开到三菱维修站修 理，工程师检查后要求更换节气门体总成，2800元，因需订货开回来了， 急用车才开来修。测量TPS传感器本身电阻特性，特别是IDL触点打开 时?，关闭时0Ω正常。装上车后重新调整，故障依旧。一时没有了主意。 想来想去还是TPS的问题，搞点破坏，破线测量IDL电压，发现在节气 门打开时，IDL电压居然有2.3V。原因传感器因洗车潮湿。引起电脑误 判。 五、 五、总结 (2分钟) 通过这堂课的学习，我们要掌握节气门位置传感器的安装位置、结构和工 作原理。学会如何对节气门位置传感器进行检测和故障的判断。同时，同 学在相互协作中，合作意识和安全意识得到提高。 六、布置作六、布置作业、整理场室 业、整理场作业1、完成实训报告 室 2、查找资料:如何用示波器对节气门位置传感器进行检测? (1分钟) summer of masonry construction, brick requires sufficient moist. 8.6.2.6 you must take the following measures to concrete construction in summer high temperature impact on concrete a. hardening speed up, vibrating difficulties reduced bleeding, fast drying, easy to crack (plastic), high early strength, fast early hydration heat, less cooling, temperature increases rapidly, due to temperature difference cracks. B. pouring daytime high temperatures, due to the high temperature effect of concrete strength, stability, in varying degrees, on mixing processes, perfusion vibration and moisture conservation, effective measures should be taken. 2) main measures taken by a. temperature control the water temperature in your standard mix proportion of concrete 2 degrees, the concrete temperature 0.5 degrees. B. with the controlled addition of retarder agent can reduce the effects of concrete under high temperature, but make some performance degradation of concrete, so when you are using additives must be implemented upon approval by the supervising engineer. C. time control suitable for work at night, should seek to reduce the mixing time and shipping time at high temperatures. D. strengthen the conservation and high temperatures after pouring in the early days of continuous water conservation to prevent surface drying and covering thin-film wet grass bag to make it moist State in 24 hours. 8.6.3 8.6.3.1 winter construction measures in winter construction preparation 1) required winter construction materials, equipment, planning ahead of time comes into