Introduction of intake hose: The intake pipe of internal combustion engine refers to the gas needed for combustion of internal combustion engine. The intake pipe must ensure enough flow area, avoid turning and section mutation, improve the surface finish of the pipe, etc., to reduce resistance. Therefore, the linear intake system is adopted in the high-performance gasoline machine. At the same time, the length of inlet throttling and intake pipe should be designed reasonably, and the volume of pressure stabilizing chamber should be arranged appropriately, so as to achieve the purpose of high rotation and high power.