Compression ratio selection and fuel anti-knock performance is closely related to the anti-knocking performance is to measure octane fuel, the higher the octane number, the better anti-knocking performance, according to several commonly used fuel octane level Sort order: diesel, CNG (methane), propane, butane (LPG is a mixture of propane and butane) and gasoline. According to this fuel properties Shandong East China gas supplier, general CNG LPG engine compression Bibi high, but lower than the diesel engine and LPG engine compression ratio and can be slightly higher Weifang Huadong gas service than gasoline, of course, because the LPG is propane and butane a mixture of different mixing ratio also affect the choice of compression ratio. After running the unit for some time, Shandong East China gas pricing, the spark plug gap will be larger, which is normal. Taizhou City Mechanical and Electrical Equipment Co., Ltd. Hang trillion of equipment, for example when the gap increases to 0.1 when 89mm Weifang Huadong gas, spark plugs fire phenomenon will occur, resulting in unstable unit operation, even stop, it should be regularly checked and adjusted at the same time Eliminating Coke spark plug and the thread that appears to ensure their use. Check the ignition timing, check the first cylinder valve timing is consistent with the technical requirements; use the engine timing gun measure the actual ignition angle is equal to the theoretical ignition angle. Check engine valve clearance is within the scope of the technical requirements, check the spark plug gap is within the scope of the technical requirements; check the camshaft and crankshaft sensor signal plate and the air gap; check the signal plate for loose or abnormal rotation and so on; measuring signal the air gap between the disk and the sensor directions. Check the engine wiring harness and vehicle wiring harness, speed sensor harness for wear, breakage and other anomalies Inspect the exhaust system for obstruction and so on; whether in particular the catalytic converter sintering blockage check gas pipeline is blocked; in particular a gas pipeline high and low pressure filter; whether high and low pressure solenoid valves and other components work properly. As these measures can not solve the problem, test each cylinder compression pressure. Shandong East China gas supplier, Shandong, East China (online consultation), Weifang Huadong by Weifang East China Gas Engine Co., Ltd. Weifang Huadong Engine Co., Ltd. (www.hdchai.com) is an industry leader in Shandong Weifang, the internal combustion engine, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Weifang Huadong leadership with the staff warmly welcome all inquiries negotiations to create a better future Weifang Huadong.