All sensors are important
Some sensors have more influence on engine performance than others. These include the coolant temperature sensor, oxygen sensor, throttle position sensor, and manifold absolute pressure sensor.
Now the car is more and more intelligent, many functions on the car are controlled by the computer to
complete. Such as engine systems, transmission systems, suspension systems, brake systems, air
conditioning systems, body control systems, and so on. The computer has to control the system, must
obtain the correct information to confirm the state of the system. And then issue the correct
instructions to control the system action. So the implementation of the driver’s intention,
the correct control of the car. The information on these reaction systems states is done by a
component called a sensor. Even a very common car, up to dozens of sensors. And up to hundreds
of cars. So what are the effects of these sensors?
What is a car sensor?
We are in the daily maintenance of the car, often hear a variety of sensors. Then in the end what is
the car sensor? In the operation of the car, the system will be in different working conditions. Such as
water temperature, oil temperature, intake pressure, speed, throttle position, stalls, etc.,
This information car computer can not read directly, must be translated into the computer can recognize the electrical signal. A car sensor is the implementation of this task. It is running the car light, electricity, temperature, pressure, time, and other information into electrical signals. And then enter the car computer system. And then by the computer in advance of the stored procedures for the calculation and analysis. Thus Determine the running status of the car. Now the car on the sensor is very much, here we talk about the care system in the name of the sensor and the role.
1, Intake manifold pressure sensor (MAP)
The function of the intake manifold pressure sensor (MAP) is to detect the degree of vacuum of the
intake manifold. And to convert the pressure signal into an electronic signal to the engine control
computer. It is the main reference signal for controlling the pulse width. And ignition timing
Divided into two types of semiconductor varistors. And capacitive intake manifold pressure sensor.
Ingress manifold pressure sensor failure. The engine will start difficult, performance disorders, acceleration deterioration, idle instability, fuel consumption, accelerated instability. Accelerated tempering, blasting, fuel consumption, deflagration, and other failures.
2, Crankshaft position sensor
The crankshaft position sensor (CKP) is one of the most important sensors in the engine centralized control system. It is an indispensable source for confirming the crank angle position and the engine speed. The engine control module (ECU) uses this signal to control the fuel injection quantity, Timing, ignition timing (ignition advance angle), ignition coil charging closure angle, idling speed, and electric gasoline pump operation.
3, The camshaft position sensor (CMP)
The camshaft position sensor is used to detect the angular position of the camshaft. The engine control module (ECU) uses this signal to determine the cylinder sequence of the engine to control the injection sequence. The ignition sequence
When the camshaft position sensor fails. The engine output power will be reduced.
4, The engine coolant temperature sensor (ECT)
The engine coolant temperature sensor is used to detect the temperature of the engine coolant. And convert the temperature signal into an electrical signal to the engine control module (ECU). As the primary correction signal for gasoline injection, ignition timing, idling, and exhaust emission control.
5, Piezoelectric knock sensor
The knock sensor is used to detect the knocking of the engine during combustion. Send the
knock signal to the engine control computer. As an important reference signal for correcting the ignition
advance angle Knock sensor with the non-resonant and resonant type of two. Generally installed in the
2-cylinder and 3-cylinder, or 1, 2 cylinders in the middle of a 3,4-cylinder in the middle one. The
connection of the general knock sensor is wrapped with shielded wire. When the knock sensor failure. The engine will deflagration, ignition timing inaccurate, high fuel consumption, power reduction, the engine work rough.