传感器介绍-ecu、sensor、actuators

Actuators
2. 共轨系统
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ECU根据喷油的需求量、油轨压力、以及泄漏量和回 油量来控制ZME的开度，从而控制进入高压油泵中的 油量。
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Powertrain Electronics & Fuel System Department
Sensors
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Powertrain Electronics & Fuel System Department
Sensors
Overview
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Powertrain Electronics & Fuel System Department
Powertrain Electronics & Fuel System Department
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Terminal diagram
Battery supply V_V_ eg: 5V supply V_V_5V Bidirectional B_D_ 以1.0柴油机线束图为例：
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Sensors
1、Hot-film air mass sensor (HFM)
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空气流量计就是用来测量发动机的进入空气量。 对于柴油机来说，HFM用在EGR的闭环控制中，作为 EGR的闭环控制量。
测量原理：
如图所示：
Powertrain Electronics & Fuel System Department
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ECU、Sensor、Actuators
发一院电子控制部 标定开发科
Powertrain Electronics & Fuel System Department
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ECU
ECU types ECU Naming Mechanical structure and demands Terminal diagram
ECU Pin naming convention
• • • • • • • • • • • Input switch I_S_ Input frequency I_F_ Input PWM I_T_ Input analog I_A_ Output switch O_S_ Output frequency O_F_ Output PWM O_T_ Output cylinder PS O_P_ Ground power G_G_ Ground reference G_R_ Ground schield G_C_
Mechanical structure and demands
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商用车ECU要有较长的使用寿命，一般为1million Km。 ECU软件为：EDC16 or EDC17
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Terminal diagram
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Powertrain Electronics & Fuel System Department
ECU Naming
Eg : EDC16UC40
其中 EDC：Electronic Diesel Control 16: RB number for the ECU generation UC: System V—Rack/Sleave Controlled distributor Pumps M—Solenoid Controlled Distributor Pumps U—Electronic Unit injection C—Common Rail 40: Ruming project/customer number
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ECU Types
EDC16C39 EDC16UC40 EDC16UC31 Passenger cars(PC) Light Duty (LD) Middle Duty (MD) Heavy Duty (HD)
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Sensors
Types Overview Introduction
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Sensors
Types ：
The temperature sensor （TF）--温度传感器 The engine-speed sensor （DG）--转速传感器 Phase sensor (PG) --相位传感器 The accelerator pedal sensor (AccPed) --油门踏板传感器 Boost pressure sensor (LDF) -- 压力传感器 Rail pressure sensor (RDS) -- 轨压传感器 Hot-film air mass sensor (HFM) --空气流量计 The lambda sensor -- λ 传感器
Sensors
空气流量计的结构：
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Powertrain Electronics & Fuel System Department
Sensors
2、The lambda sensor
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λsensor 亦为氧传感器。主要安装在发动机的排气歧管上， 用来测量废气中氧的含量。 λsensor 测量的值，作为控制 DPF再生以及作为控制喷油量控制来使烟度排放达到最低 限值。 λsensor一般在欧四机子上才会用到。
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Mechanical structure and demands
Mechanical structure
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Powertrain Electronics & Fuel System Department
Байду номын сангаас
Mechanical structure and demands
Demands
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轿车和商用车ECU最大的区别就是商 用车在设计上要求比较高，因为商
用车ECU直接安装在
发动机上，其承受
较大的机械负荷。 而轿车ECU安装在车 上。
Powertrain Electronics & Fuel System Department
Powertrain Electronics & Fuel System Department
Actuators
1. Start of injection control
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ECU 接收来自点火钥匙、防盗控制器、离合器 开关以及空挡开关的信号，来确定是否接通起 动机继电器。
Powertrain Electronics & Fuel System Department
Powertrain Electronics & Fuel System Department
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Actuators
Types Start of injection control Common Rail(CR) injection system
Powertrain Electronics & Fuel System Department
Actuators
Types：
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Start of injection control 启动控制 Common Rail(CR) injection system 共轨系 统 Turbocharger system 增压系统 EGR 废气再循环 Glow plug （Grid heater) 冷起动加热