Air flow sensor, etc. About five cars with sensors
Car Sensor A car computer system input devices, which run the car in various conditions of information, such as speed, temperature of various media, Engine Operating conditions, etc. into the computer lost the telecommunications number to the engine in top working condition. Many vehicle sensors to determine when the sensor malfunction should not only consider the sensor itself, but should consider the failure of the entire circuit. Therefore, to find fault, in addition to check the sensors, we should also check the wiring harness, connectors and sensors and electronic control unit of the circuit between. Now we come to know about the car's main sensor.
Air Flow Sensor Air flow sensor is inhaled into the air Telecommunications No. sent to the electronic control unit (ECU), as the decision to spray one of the fundamental signal. According to different measuring principle, can be divided into rotary vane air flow sensor (PREVIA Toyota station wagon), Karman vortex air flow sensor Tour (Toyota Lexus LS400 sedan), Hot-wire Air Flow Sensor (Nissan Maxima car
VG30E engines and domestic passenger TJ6481AQ4 Tianjin Sanfeng equipped with the Volvo B230F engine) and the hot-film air flow sensor for the four types. Volume flow rate for the first two types, the latter two for the mass flow type. Currently the main use of hot wire and hot-film air flow sensor air flow sensor two.
Inlet pressure sensor Inlet pressure sensor can detect the engine load conditions within the intake manifold absolute pressure, and converted into electrical signals and sent to the computer with the speed signal, as the decision to the basic fuel injection amount of injector basis. Domestic Audi 100 Car (V6 engine), Santana 2000, Beijing Cherokee (25L engines), Toyota Crown 3.0 car all adopts such a pressure sensor. Is now widely used Semiconductor Pressure-sensitive Resistance Inlet air pressure sensor.
Throttle Position Sensor Throttle position sensor installed in the throttle, the throttle is used to detect the opening. It is through the lever body and throttle linkage, and thus reflect the different engine operating conditions. This sensor can be the engine of the different conditions tested and enter the electronic control unit (ECU), thereby control the amount of different fuel injection. There are three types: contact-type switch Throttle Position Sensor (Santana 2000 and Tianjin trimodal bus), linear variable resistor-type throttle position sensor (Beijing Cherokee), integrated throttle position sensor (Audi 100 V6 engine).
Crankshaft Position Sensor Also known as crank angle sensor, a computer-controlled ignition system, the most important sensors, whose role is to detect the TDC signal, crank angle signal and engine speed signals, and entered into the computer so the computer can press cylinder The ignition sequence of instructions issued by the best ignition timing. Crankshaft position sensor, there are three types: electromagnetic pulse crankshaft position sensor, Crankshaft Position Sensor Hall Effect (Santana 2000 and Beijing Cherokee), the photoelectric effect-type crankshaft position sensor. Crankshaft position sensor is different, its control and the control precision are different. Crankshaft position sensor is usually installed on the crankshaft pulley or sprocket side, some installed in the camshaft front, and some are installed in Distributor (Santana 2000).
Knock Sensor Knock sensor installed in the engine's cylinder on the situation at any time to monitor the engine knock. Currently used are resonant and non-resonant two categories.
[Key words]: Sensor Car Comment Large In Small
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