The role of the crankshaft sensor

An engine ignition time ( say a little simple, it is the moment of spark ignition , the corresponding crankshaft position ) , is to be very accurate ( correct to say that there is a range in which the crankshaft to an angle within the range requiring Fireworks plug ignition , not to this position the crankshaft , the ignition spark plug , the engine is possible that the normal work ) , the carburetor before the car, with a mechanical power switch to control the spark plug , Just go to Camshaft Position Sensor , spark plugs will ignite. . . Now all electronically controlled , and , then , go to the computer you want to know what the crankshaft angle ( position ) , you can only think of ways to engage an electrical signal , let the computer know what angle to the crankshaft in the end , but to the best one ignition position , the computer controlled ignition . . . . Second, the crankshaft position only to have strict requirements ignition timing , fuel injection is relatively minor, because , injection slowly earlier , the impact of work on launching fee is not great, but , if ignition is not normal , then a great impact . Third, there is a common crank Car Temperature Sensor , electromagnetic ( on a side of the crankshaft gear . Front chainring ) , a simplified physical model is a small permanent magnet generator , it is the most common kind , ,,, , the other type of photoelectric ( a small disc , open at the many small holes in the upper and lower plate , mounting points corresponding to the device and the photosensitive device , a light emitting element , the light emitted when the circle hole position to the disk , the light shine on the photosensitive member following the reception of light ) , light is actually a simplified model of the battery , there is a Hall sensor . . , Swiss road running car , more than 95 % of all first .

Air temperature sensor

Automatic air conditioning system temperature sensor includes : engine coolant temperature sensor , in-car temperature Sensor Camshaft , ambient temperature sensor , evaporator temperature sensor. According to these sensor signals the control unit calculates the desired blowing air inside the cabin temperature , select the desired amount of air , and then control the air mixture inlet valve, out of air intake converter board , etc., within the temperature range set by the driver automatically adjust the temperature inside the cabin , to achieve the best , and automatic control of air conditioning on and off. One condition is that the air conditioning system refrigerant temperature higher than the room temperature, the ambient Engine Water Temperature Sensor circuit , the terminal water , poor contact or poor ground , the data stream will be displayed below the ambient temperature -30 ℃, will cause no refrigeration . Meanwhile, the engine coolant temperature sensor circuit or ground wire is bad, the signal loss of time, the cooling fan does not turn , lead to poor air conditioning cooling, will enter the fail-safe , so air conditioning stopped working

Motor bearing temperature sensor installation and use

Measurement of motor bearing temperature, the sensor junction box installed in the appropriate position of motor,Tighten the connecting screws, connecting wire.The temperature sensing element transducer (probe) is inserted into the screw hole in the vicinity of the motor bearings (such as motor casing, shaft casingdrilling), and tighten the mounting nut.The junction box of Shaft Position Sensor is opened, will leadcable connected, theboxcover,willleadto thecable to designatedlocations and intrinsically safe type two meter connectioninstallation lead atCoolant Temperature Sensor intervals of 300mm head is fixed by binding, wire spring tubebending radius is not less than 60mm, lead too long can pull ring in the right place,and far from the heating equipment.

If you choose "not moving" nut installation, the installation must first install theprobe part, then mounted junction box

The structure and working principle of the knock sensor

Knock sensor is an important component of engine electronic control system, its function is to detect whether the engine detonation, and the signal sent to ECU engine. Knock sensor common has two kinds, one is the magnetostrictive knock sensor, a piezoelectric type knock sensor. Magnetostriction type knock Engine Water Temperature Sensor in which a permanent magnet, permanent magnet excitation by around the magnetic core and the iron core coil. Its working principle is: when the engine cylinder block vibration,Car Temperature Sensoris about 7kHz and the engine to produce resonance, strong magnetic material core permeability changes, resulting in a permanent magnet flux density through the core also change, so as to generate the induced electromotive force in winding around the core, and the electrical signal input ECU. Piezoelectric type knock sensor using the effect of piezoelectric crystal or ceramic polycrystals and work, but also the use of piezo resistance effect of the doped silicon. The sensor housing is provided with a piezoelectric element, counterweight block and wire etc.. Its working principle is: when the engine cylinder block vibration and vibration transmitted to the casing of the sensor, relative movement between the shell and the counterweight, variation of piezoelectric element is clamped in between the pressure occurs, resulting in voltage. ECU detects the voltage, and according to the size of its value judgment of knock intensity.

What is the tension sensor works

What is the tension Coolant Temperature Sensor works ?Elastomers ( elastic components, sensitive beam ) elastic deformation under external force , so that he pasted on the surface of the resistance strain gauge ( conversion element ) also accompaniedCar Sensors deformation, deformation resistance strain gauges , its resistance will change ( increase or decrease ) , and then by a corresponding change in resistance of the measuring circuit is converted to an electrical signal ( voltage or current ) , thereby completing the process of an external force into an electrical signal .

Tension sensor known as resistance strain sensor

Tension sensor known as resistance strain Cooling Temperature Sensor , part of the load cell series, is a physical signal into a measurable electrical output of the device , which uses two passes some tension power transmission , in its structure containing force-sensitive force transfer device and the two parts , the pressure sensitive device comprising a piezoelectric film , the piezoelectric sheet gasket, the latter comprising a substrate portion and the edge portion of the force transmission , characterized in that the two force transmitting portion are respectively fixed on both ends of , together with the working surface between the ends of the transverse clamping force-sensitive device , the side of the piezoelectric sheet gasket pressure in the central region of the piezoelectric film , the substrate portion is the other side of the piezoelectric sheet edge portion of the force transmission room and close the piezoelectric film, one of its purposes is to be made to replace the rod hook scales weighbridges . The actual working environment is essential for the correct selection of tension Coolant Temperature Sensor , it is not only related to the force sensor can work as well as its safety and service life , and even the whole scale reliability and security .

What is the working principle of the anti explosion sensor

For the use of sensors in flammable and explosive occasions, in order to avoid the occurrence of explosion, usually with explosion-proof requirements of the product. There are three main sensor explosion-proof methods, respectively, is to control the explosive gas explosion detonated, control limitations and control source. The working principle of the three methods do briefly introduce: 1, control and explosive gasThe working principle is the box body burst in a sealed compartment, with clean air or inert gas does not contain explosive gases, and keep the inside pressure is slightly higher than the tank pressure, the sensor is installed in the box. Representative for the positive pressure explosion-proof method Exp. 2, control the explosion limitThe working principle is according to Exd standard, Crank Position Sensors housing design for flameproof standard housing, according to the shell explosion-proof standard instrument design, according to the standard design, manufacture and assembly of severely all management process, in the attack the shell explosion not to excite the shell of gas explosion risk.
Isolation design and manufacture standard proof explosion-proof measures extremely severe, and operating procedures, and repair of the assembly connection is also very strict. Electrical equipment, the way of determining the flameproof instrument are very strict, the operation must be off, but many cases is the most useful method. 3, ignition control source principle is applied safety gate isolation wiring, processing from Cooling Temp Sensor is in electric power distribution, will supply the field sensor energy limited in both cannot occur enough to detonate the spark, and can safely confined to surface temperature rise within the instrument. According to the national standards of international norms and China, when the peace gate safe area at one side of the connecting device to attack any obstacle, essence safety explosion-proof measures to ensure that explosion risk on site safety need to remind you to consider in the purchase of Cooling Temperature Sensor for the use of different occasions and configuration, choose according to need the intrinsically safe type, flameproof type sensors and instrumentation also required, Ex explosion-proof certification from suppliers.