How to disassemble the paladin oxygen sensor?

With the development of electronic technology, electronic control technology is widely used in automobile control system to improve the power, economy, safety and comfort of automobiles and reduce exhaust pollution. Automobile sensor is an important part of automobile electronic control system, which is responsible for information collection and transmission. The working performance of the sensor is directly related to the running state of the vehicle and the safety and economy of the vehicle.

Sensors are mainly used to collect the information of automobile operation, and convert these information into electrical signals, which are input to the electronic control unit to provide information reference for the automatic control of automobiles. Automobile sensor is one of the core contents in the technical field of automobile electronics. Its application in automobiles has expanded from the initial engine control system to various automobile systems, mainly involving engine electronic control system, chassis electronic control system, body electronic control system and automobile comfort and safety control system. At present, there are dozens of sensors installed in an ordinary family car, while there are hundreds of sensors in luxury cars.

At present, most cars use bus system to share the information of sensors, which are the antennas of electronic control system, so the performance of sensors will directly affect the performance of related systems and even the whole vehicle. Therefore, it is very important to master the working principle, installation position, detection and disassembly methods of automobile sensors.

Here is an illustrated book "Structure Principle and Maintenance of Automobile Sensors" recommended by Bian Xiao, which is novel, systematic and practical. It is suitable for automobile maintenance personnel, teachers and students majoring in automobile maintenance, and also for managers of automobile maintenance enterprises.

necessary

Liu Chunhui, senior engineer, senior lecturer in automobile specialty, engaged in automobile electrical maintenance, has many years of experience in automobile electrical system and automobile electronic control system maintenance; He has published more than ten papers on automobile electrical maintenance in various automobile magazines, and ten books on automobile maintenance in this magazine.

Book characteristics

Why did you choose this book?

one

Sensor is an important part of automobile electronic control system, which is responsible for information collection and transmission, and is directly related to the running state of automobile.

Teach you to identify the position and structure of various sensors in the car with the color high-definition picture of the book.

2

And position and angle sensors/gas and liquid flow sensors/gas and liquid pressure sensors/concentration sensors/speed sensors/temperature sensors/deflagration and collision sensors. This book includes all these.

three

Installation position/structural principle/detection method.

four

Master the diagnosis methods of common faults of automobile sensors.

brief Introduction of the content

Taking the book Automobile Sensors as the research object, the installation position, structural principle and detection methods of different types of sensors, such as position and angle sensors, gas-liquid flow sensors, gas-liquid pressure sensors, gas concentration sensors, speed sensors, temperature sensors, deflagration and collision sensors, are systematically expounded, and the common fault diagnosis methods of automobile sensors are systematically summarized.

The biggest feature of books is "explaining with pictures" to reduce unnecessary text narration; At the same time, it has the advantages of novel content, strong systematicness and strong practicability.

Drag the scroll bar on the right to see the complete table of contents.

_

◆ Content: ◆

order

Chapter 1 Overview of automobile sensors 1

Section 1 Classification and Composition of Sensors 1

I. Definition and composition of sensors 1

Two. Classification of automobile sensors II

Three. Sensor signal 2

Section 2 Detection of Automobile Sensors 4

I. Precautions for Sensor Testing 4

Second, the sensor detection method 4

Chapter 2 Position and Angle Sensor 8

Section 1 Throttle Position Sensor 8

I. Overview 8

Two. Contact throttle position sensor 9

Three. Position of linear variable resistance throttle valve

Sensor 1 1

Four. Variable resistance part with idle switch

Valve position sensor 13

Verb (abbreviation of verb) position of double variable resistance throttle valve

Sensor 14

Intransitive verb Hall throttle position sensor 15

Seven. Sagitar throttle control unit 19

Eight. Intelligent electronic throttle (ETCS I type) 24

Nine. Inductive throttle position sensor 27

Section 2 Accelerator pedal position sensor 28

First, the position of the variable resistance accelerator pedal

Sensor 29

Two. Hall accelerator pedal position sensor 30

Three. Location of sagitar new accelerator pedal

Sensor 30

Section 3 Crankshaft Position Sensor 33

I. Function and Installation of Crankshaft Position Sensor

Position 33

Two. The magnetic induction crankshaft position sensor 34

Three. Hall crankshaft position sensor 37

Four, photoelectric crankshaft position sensor 43

The fourth camshaft position sensor 45

I. Overview 45

Two. Hall camshaft position sensor 45

Three. Reluctance camshaft position sensor 46

Four. Maintenance of New Jetta Hall Camshaft Position Sensor 49

Section 5 Seat occupancy sensor 5 1

First, the passenger seat occupancy sensor 5 1.

Two. Seat Occupancy Identification Pressure Sensor 5 1

Three. The seat occupancy recognition control unit 52

Four, seat occupancy identification seat belt tension

Sensor 52

Five, the composition of the seat occupation identification system

Network 53

Six, seat occupancy sensor detection 54

Section 6 Steering wheel angle sensor 55

First, Volkswagen steering wheel angle sensor 55

Two. Toyota steering wheel angle sensor 58

Section 7 Other Position and Angle Sensors 59

First, the horizontal position sensor 59

Second, the clutch position sensor 62

Three. Electromechanical power steering motor

The position sensor 66

Four. Capacitive liquid level sensor 67

Verb (abbreviation of verb) Intake manifold throttle position sensor 70

Intransitive verb exhaust gas recirculation potentiometer 72

Chapter 3 Gas and Liquid Flow Sensors 74

Parts 1 air flow sensor 74

I. Overview of air flow sensor 74

Two. Hot wire air flow meter 75

Three. Hot film air flow sensor 77

Four, a new type of hot film air flow sensor

HFM680

Verb (abbreviation of verb) detection of hot film air flow sensor 84

Intransitive verb thermal resistance air flowmeter 87

Section 2 Liquid Flow Sensor 87

First, the photoelectric fuel flow sensor 87

Second, the electrostatic refrigerant flow sensor 88

Chapter 4 Gas and Liquid Pressure Sensors 90

Section 1 Intake air pressure sensor 90

I. Semiconductor varistor sensor 90

Second, the sensor detection 93

Section II Tire Pressure Sensor 94

I. Structure of Tire Pressure Monitoring System

Composition 94

Second, the work of tire pressure monitoring system

Process 97

Three. Operation of tire pressure monitoring system and

Display 99

Four. Function of Tire Pressure Monitoring System 102

In the third quarter, brake pressure sensor 103

1. Piezoresistive brake pressure sensor 103.

Two. Piezoelectric brake pressure sensor 106

Three. Brake pressure sensor (Bosch/

ITT) 107

Section 4 Other Pressure Sensors 109

I. Oil pressure sensor 109

Second, the Volkswagen direct injection engine fuel pressure

Sensor 1 10

Three. * * * Rail fuel pressure of electronically controlled diesel engine

Sensor 1 1 1

Four. Refrigerant pressure/temperature sensor 1 14

Verb (abbreviation of verb) refrigerant high pressure sensor 1 15

Intransitive verb Boost pressure adjustment position sensor 1 16

Chapter 5 Gas Concentration Sensor 1 18

Part I Oxygen Sensor 1 18

1. Universal oxygen sensor 1 18

Wide-area oxygen sensor 124.

Section 2 Nitrogen oxides

Sensor 129

I. Structure of NOx sensor 129

Second, the working principle of NOX sensor 129

Three. Installation position and function of NOX sensor 13 1

Section 3 Air Quality Sensor 132

I. Installation position of air quality sensor

Role 132

Two. Working principle of air quality sensor 133

Three. Air quality sensor function 133

Four. Air quality sensor detection 134

The fourth quarter smoke concentration sensor 134

I. Structure and working principle

Second, the smoke concentration sensor detection 135

Chapter VI Speed Sensor 137

The first wheel speed sensor 137

I. Magnetic induction wheel speed sensor 137

Two. Reluctance wheel speed sensor 140

Three. Hall wheel speed sensor 142

Four, the new Hall wheel speed sensor 144

Verb (abbreviation of verb) New active ABS wheel speed

Sensor 146

Section 2 Combined Acceleration Sensor 147

I. Combined sensor 147

Second, the combined acceleration sensor detection 150.

In the third quarter acceleration and deceleration sensor 15 1

1. longitudinal acceleration sensor 15 1.

Second, the lateral acceleration sensor 15 1.

Three. Audi A8 acceleration sensor 153

Four. Yaw rate sensor and linear g

Sensor 155

Chapter VII Temperature Sensor 157

Section 1 Engine temperature sensor 157

A, the role of temperature sensor 157

Two. Structure of Temperature Sensor 158

Three. Air temperature sensor 159

Four. Coolant temperature sensor 16 1

Verb (abbreviation of verb) Exhaust gas temperature sensor 164

Vi. EGR monitoring temperature sensor 166

Section 2 Electric Vehicle Temperature Sensor 167

1. High voltage battery temperature sensor 168

Second, the high-voltage battery air temperature sensor 169.

Three. Auxiliary battery temperature sensor 169

Four. Motor temperature of hybrid power system

Sensor 17 1

The third paragraph, automobile air conditioning temperature sensor 172.

I. Instrument Panel Temperature Sensor 173

Second, the external temperature sensor 175.

Thirdly, evaporator outlet temperature sensor 176.

Four. Fresh air inlet temperature

Sensor 179

Verb (abbreviation of verb) Foot pit air outlet temperature sensor 179

Chapter VIII Deflagration and Collision Sensor 180

The first section deflagration sensor 180

A, engine deflagration 180 detection method

Second, the function and classification of deflagration sensor 180

Three. Magnetostrictive deflagration sensor 183

Four. Piezoelectric deflagration sensor 183

Verb (abbreviation of verb) Knock sensor detection 184.

Section 2 Collision Sensor 186

I. Classification of collision sensors 186

Two. Electromechanical combination collision sensor 187

Three. Mercury switch collision sensor 189

Four. Electronic impact sensor (pressure

Sensor) 190

Verb (abbreviation of verb) Collision sensor detection 19 1

Chapter 9 Other types of sensors 193

Section 1 Intelligent Battery Sensor 193

First, the working principle of intelligent battery sensor

Principle 193

Second, the structure of intelligent battery sensor

Installation location 193

Three. IBS function 193

Four. Electronic analytical instruments 195

Rainfall sensor in the second quarter 195

I. Rainfall Sensor 196

Two. Wiper motor control unit 197

Three. Power control unit 198

Four. Intelligent wiper control function 199

Verb (abbreviation of verb) Other functions of smart wiper 200

Section 3 Rainfall and Light Recognition Sensor 200

I. "Rain Stop" function 200

Second, the rainfall and light recognition sensor 202

Three. Rainfall recognition function 203

Fourth, the optical recognition function 203

The fourth quarter COVID-19 phase splitter torque.

Sensor 204

1. COVID-19 electric power steering system

Structure 204

Second, the basic electronic power steering system

Working principle 208

Section 5 Air humidity sensor 209

I. Installation Location and Function 209

Two. Measurement of air humidity 2 10

Three. Temperature measurement of sensor 2 1 1

Four. Circuit diagram of humidity sensor 2 12

Photo of the 6th Photoelectric Sensor Festival 2 12

1. Solar photoelectric sensor structure 2 12

Second, the principle of sunshine photoelectric sensor 2 12

Iii. Detection of sunlight photoelectric sensor 2 13

Section 7 Other Sensors 2 14

I. Height sensor 2 14

Second, the body acceleration sensor 2 16.

Three. Active cruise control sensor 2 17

Four. Tilt sensor 2 19

Verb (abbreviation of verb) Power steering sensor 2 19

Intransitive verb fuel level sensor 22 1

Seven. GPS navigation angle sensor 223

Eight. Deflection rate sensor 225

Nine. The glass breakage sensor 227

X. Quick start induction wheel 228

XI. Steering torque sensor 229

Reference 233

end

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