Sensor is a link and a bridge between the digital world and the physical world in the Internet of things system. When the sensor is used on the vehicle, it can convert various working condition information during vehicle operation, such as vehicle speed, temperature of various media, engine operating condition, etc., into data and transmit it to the computer so that the engine is in working state. There are about 100 kinds of sensors in a car, but once it fails, the normal operation of the car will be greatly reduced!

ABS防抱死制动系统失效

ABS anti lock brake system failure

轮速传感器故障

Wheel speed sensor failure

制动时车轮有抱死现象，则说明ABS控制系统不起作用，这可能是轮速传感器出现了损坏，车主可以观察仪表上的车速显示是否存在一定偏差。轮速传感器故障会造成发动机怠速不稳和加速性能下降。其次，在车辆起步或减速停车的时候，很容易出现瞬间停顿的现象，甚直接熄火也是有可能的，会大大影响行车安 全性，所以，当轮速传感器出现故障时，司机师傅们要以较为缓慢的车速将车开到距离近的汽修店进行维修更换。

If the wheels lock when braking, it means that the ABS control system does not work. This may be because the wheel speed sensor is damaged. The owner can observe whether there is a certain deviation in the vehicle speed display on the instrument. Wheel speed sensor failure will cause unstable idle speed and degradation of acceleration performance of the engine. Secondly, when the vehicle starts or slows down and stops, it is easy to stop instantaneously, or even turn off directly, which will greatly affect the driving safety. Therefore, when the wheel speed sensor fails, the drivers should drive the vehicle to a nearby garage at a relatively slow speed for maintenance and replacement.

怠速不稳、油耗增加

Unstable idle speed and increased fuel consumption

氧传感器故障

Oxygen sensor fault

开车时发现发动机故障灯亮起，发动机怠速不稳、动力不足，油耗升高，排气有突突声，排气管冒黑烟并伴有呛鼻的味道时，可以用故障诊断仪检测一下电压。将电压表并联在氧传感器输出端，正常情况下是在0.1-1伏之间不断变化，如果在0.4-0.5之间不动，说明氧传感器损坏。一般来说，车辆每用3万就要对氧传感器进行一次检修，如果传感器出现老化要立即清洗或者更换新的传感器，否则会影响发动机性能和三元催化装置的正常工作。

When the engine fault light is on, the engine idle speed is unstable, the power is insufficient, the fuel consumption increases, the exhaust makes a sudden noise, and the exhaust pipe emits black smoke with a choking smell, you can use the fault diagnosis instrument to detect the voltage. Connect the voltmeter to the output terminal of the oxygen sensor in parallel. Normally, it changes constantly between 0.1-1 v. if it does not move between 0.4-0.5, the oxygen sensor is damaged. Generally speaking, the oxygen sensor shall be overhauled every 30000 km. If the sensor is aged, it shall be cleaned or replaced immediately, otherwise the engine performance and the normal operation of the three-way catalytic device will be affected.

发动机冷车不易启动

It is not easy to start when the engine is cold

水温传感器故障

Water temperature sensor failure

汽车水温传感器如果出现故障，冷车启动的时候就会有些困难，甚没办法启动，严重的还会导致发动机温度过高，甚开锅、加速无力、排气冒黑烟等现象。不过现在的汽车一般都具有完善的保护机制，当发动机ECM（发动机控制模块）检测到水温传感器故障时，会自动进入故障保护模式，然后按照预设参数启动风扇，同时点亮故障灯。

If the vehicle water temperature sensor fails, it will be difficult or even impossible to start the cold vehicle. In serious cases, it will also lead to excessive engine temperature, even boiling, weak acceleration, black smoke from exhaust and so on. However, current vehicles generally have perfect protection mechanism. When the engine ECM (engine control module) detects the fault of the water temperature sensor, it will automatically enter the fault protection mode, then start the fan according to the preset parameters and turn on the fault light at the same time.

此时汽车还能正常开动，但一定要尽快去汽修店更换，不能依赖应急系统长时间使用汽车。否则水温过高会导致发动机拉缸，造成发动机大修。

At this time, the car can start normally, but you must go to the garage for replacement as soon as possible. You can't rely on the emergency system to use the car for a long time. Otherwise, too high water temperature will cause engine cylinder pulling and engine overhaul.

汽车是由成千上万个零部件组成的“复杂体”，作为驾驶员，如果想要汽车以良好的状态为我们的出行服务，就要对它进行全 面深入的了解，做到人车合一的境界才能在驾驶中和日常保养时作出正确决策，保障我们的行车安 全。

Automobile is a "complex body" composed of thousands of parts. As a driver, if you want the automobile to serve our travel in good condition, you must have a comprehensive and in-depth understanding of it and achieve the realm of people and vehicles in one, so as to make correct decisions during driving and daily maintenance and ensure our driving safety.