Crankshaft position sensor, also known as crank angle sensor car sensor which is a computer-controlled ignition system is the most important sensor, whose role is to point the signal, the crank angle signal and engine speed signal, and entered into the computer on the car sensor only, so that the computer can send commands optimum ignition timing according to the cylinder firing order. Crankshaft position sensor, there are three types: electromagnetic pulse crankshaft position sensor, Hall effect crankshaft position sensor, crankshaft position sensor photoelectric effect. Crankshaft position sensor type is different, its control and control accuracy is also different. Crankshaft position sensor is usually installed on the crankshaft pulley or sprocket side, some mounted on the front end of the car camshaft sensor classification, and some are mounted on the distributor. Knock sensor mounted on the engine block, ready to monitor the engine's knock. Using resonant and non-resonant two categories. Automotive Sensors - Flow sensors are used to measure engine air flow and fuel flow. An engine control system for measuring air flow rate determining combustion conditions, air-fuel ratio control, start, the ignition and the like. Rotary wing air flow sensor chip (blade), Carmen scroll, hot wire, hot-film four types. Chip simple rotary wing (Vane) air flow meter structure, low accuracy, the measured air flow required for temperature compensation; Karman vortex air flow meter has no moving parts, reflecting the sensitivity, high accuracy, but also need temperature compensation; high-wire air flow meter accuracy without temperature compensation, but susceptible to gas pulsation, easily broken wire; hot-film air flow meter and a hot wire air flow meter to measure the same principle, but with less volume for mass production, low cost. The main technical indicators for air flow sensor: Working range 0.11 to 103 m3 / min, the working temperature -40 ℃ ~ 120 ℃, the precision ≤1%. Fuel flow sensor for detecting the fuel flow rate, the water wheel and the main recirculating ball type, the dynamic range 0 ~ 60kg / h, working temperature of -40 ℃ ~ 120 ℃, 1% accuracy, response time <10ms. Wholesale automotive sensors, Xinfeng (certified), Tianjin Automobile sensors provide sensing by Xinxiang City Xinfeng purification technology Limited. Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) is an industry leader in Henan Xinxiang, sensors, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Xinfeng leadership with the staff warmly welcome all inquiries negotiations to create a better future Xinfeng.