What problems can a faulty automotive camshaft position sensor cause?

The camshaft position sensor is installed in a position where the camshaft runs synchronously and provides camshaft position information. Camshaft position sensors have a significant impact on the emissions of the system. When there is a problem with the sensor, it is difficult for the vehicle to start, and starting can cause obvious acceleration defects.

The ECU judges the cylinder based on this signal and the G28 signal, so as to determine the first ignition at start-up; Determine the firing sequence, also used for sub-cylinder knock control. If the sensor fails, the engine has no knock control and the ignition advance angle of each cylinder is delayed.

Automotive acceleration sensorIn the car driving, the sensor monitors the instantaneous fuel consumption data during acceleration and transmits it to the throttle and fuel injection unit to achieve the purpose of energy saving and emission reduction. The energy saving and consumption reduction of the automobile acceleration system is mainly in two aspects. One is the energy consumption of the engine and the other is the energy consumption of the gearbox.

The energy consumption of the engine is mainly the number of nodes of the gearbox, and the number of nodes is more, and the energy-saving effect will be better; The speed frequency of the gearbox is related to the load of the engine, and the low speed frequency is poor in energy saving.

When the engine speed drops suddenly, the camshaft position sensor (phase) senses an increase in engine speed. When the engine speed rises, the camshaft position sensor (phase) senses the engine speed drop. When the engine speed drops, the cylinder recognition signal is transmitted via cable to the intake manifold, which is located between the camshaft position sensor (phase) and the engine speed (transmission speed).

When there is a sudden drop in engine speed, the camshaft sensor (phase) sends a signal to the engine camshaft position sensor (position).

The camshaft position sensor (phase) acts accordingly based on the position information of the camshaft. When the camshaft position sensor (phase) signal fails, the engine operates without the camshaft position sensor (position), and the steering premature steering will occur. Premature steering is a malfunction of the engine and can be dangerous.

Premature engine steering is caused by the failure of the oil pump, which can cause oil line damage, oil circuit failure, high oil temperature, too thin oil, insufficient oil and other oil failure symptoms.

Camshaft position sensor structure: When the crankshaft position sensor system fails, the camshaft position sensor will use the cylinder recognition signal to provide different control to each engine component.

A faulty camshaft position sensor can cause a malfunctioning of the engine, making it difficult to start the engine, or the ECU cannot obtain the information fed back from the sensor, resulting in abnormal control of the engine's intake and exhaust system and affecting its performance.

The camshaft position sensor was broken, and the car had a high-pressure fire, but the starting time was long, and the car was finally able to run. 2.During starting, there will be a reversal of the crankshaft and a tempering phenomenon in the intake manifold.

It will make it very difficult for the car to start when it starts, it will be very difficult to start, and this situation is also very troublesome, and it still needs to be repaired.

If there is a problem with the camshaft position sensor, it will be difficult to ignite and the engine will be very difficult to start.

It may cause acceleration to be unfelt, the car will be shaking all the time, idling, suddenly stalling, or fuel consumption will increase.

The engine may not be able to start properly, and it may be pushed against the valve, crankshaft reversal, long starting times, and so on.

1. The ignition is ineffective, and the engine is difficult to start;

The impact of the failure of the camshaft position sensor: 1. After the camshaft position sensor is broken, the ECU cannot detect the position change of the camshaft, which affects the air intake and exhaust volume of the intake and exhaust system, and then affects the engine performance; 2. If the camshaft position sensor is broken, the computer will spray the bending cherry oil in a disorderly manner, resulting in oil consumption, track cutting, and speed failure; 3. The camshaft position sensor can determine the ignition sequence, if it is broken, the ignition will not work, and the engine is not easy to start. The function of the automobile camshaft position sensor is to collect the position signal of the valve camshaft and input it into the ECU, so that the ECU can identify the top dead center of cylinder 1 compression, so as to carry out sequential fuel injection control, ignition time control and deflagration control.

Camshaft position sensor is a sensing device, also known as synchronous signal sensor posture, is a cylinder discriminating positioning device, input camshaft position signal to ECU, is the main control signal of ignition control.

There are several points of influence:

1. The car has a high-pressure fire, but the starting time is long, and the car can finally run;

2. During the starting process, the crankshaft will be reversed, and the intake manifold will be tempered;

3. The idle speed of the car is unstable and the shaking is serious, similar to the failure of the car cylinder;

4. The acceleration of the car is insufficient, the car cannot run, and the speed exceeds 2500 rpm;

5. The car will have high fuel consumption, exhaust emissions exceed the standard, and the exhaust pipe will produce unpleasant black smoke emissions.

1. The function of the camshaft position sensor is to collect the signal of the camshaft moving angle and input it into the electronic control unit (ECU) in order to determine the time of suffocation and fuel injection. Camshaft position sensor, in order to distinguish it from crankshaft position sensor (CPS), camshaft position sensor is generally represented by CIS;

2. The function of the camshaft position sensor is to collect the position signal of the valve camshaft and input it into the ECU, so that the ECU can identify the top dead center of cylinder 1 compression, so as to carry out sequential fuel injection control, ignition time control and deflagration control;

3. The camshaft position signal is also used to identify the first ignition moment when the engine starts. Because the camshaft position sensor is able to identify which cylinder piston is about to reach the top dead center, it is called a cylinder recognition sensor.

When the camshaft position sensor circuit fails, it will have the following effects: 1. The engine is difficult to start or cannot be started; 2. Increased engine fuel consumption; 3. Decreased power; 4. It is easy to detonation; 5. The fault light of the start-up machine is on. When a faulty camshaft position sensor fails, it makes it impossible to predict the ignition sequence, inaccurately inject fuel, and affect intake and exhaust volumes.

The camshaft position sensor is also called the cylinder recognition sensor, the camshaft position transmission sensor can accurately know the position of each cylinder piston, and the role of the camshaft position sensor is to control the ignition timing of the engine and the fuel injection timing by collecting the corner signal of the camshaft sock beat.

The conditions that can cause the camshaft sensor to malfunction are:

1. The cam sensor, that is, the cam position sensor, is the positioning sensing device for cylinder discrimination, what is the impact of the camshaft sensor on the car, which will lead to ineffective ignition, making it difficult for the engine to start, or the ECU can not obtain the information fed back by the sensor, resulting in abnormal control of the engine intake and exhaust system and affecting its performance;

2. In addition, damage to the camshaft sensor will also cause the crankshaft to reverse when the car starts, resulting in the problem of tempering of the intake manifold. In addition, the ECU cannot obtain information, which leads to disorderly fuel injection, which leads to increased fuel consumption. The vehicle may also have severe shaking, similar to the lack of cylinders in the vehicle.

3. Generally, when the camshaft sensor fails to beat, the engine fault light will be detected, so that the fault indicator light on the vehicle dashboard will light up, reminding the owner of the gear oak to carry out vehicle inspection and maintenance in time;

4. Under the condition that the device is normal, the function of the camshaft sensor is to transmit it to the ECU electronic control unit according to the operation of the cylinder, so as to use the information to carry out sequential fuel injection control, ignition time control and deflagration control. In addition, the camshaft sensor can act as an emergency ignition in the event of a crankshaft sensor failure.

Millions of car purchase subsidies.