Muffler in car can be divided into three categories: resistive mufflers, resistive mufflers and impedance composite mufflers according to the principle and structure of noise elimination. 1. Resistant muffler is an expansion chamber, resonance chamber and other muffler units formed by pipes, partitions and other components inside. Sound waves are reflected and interfered during propagation, reducing the sound ener

Do you know what types of muffler in car are? The resistive muffler mainly uses porous sound-absorbing materials to reduce noise. The sound-absorbing material is fixed on the inner wall of the air flow channel or arranged in the pipeline in a certain way to form a resistive muffler. When the sound wave enters the resistive muffler, a part of the sound energy is rubbed in the pores of the porous material and converted

Cemented carbide valve seats are used in various specifications and configurations, and can be used under wear, corrosive and corrosive conditions. The following are the outstanding features of cemented carbide valve seats:     Corrosion resistance and wear resistance;     Longer working hours;     High pressure;     High dimensional accuracy;     Ex

The effect and influence of diaphragm on lithium battery thickness The thickness is related to the internal resistance, the thinner the smaller the internal resistance, so as to achieve high-power charging and discharging. As small as possible under a certain mechanical strength, the thicker the puncture strength, the better. For consumable lithium-ion batteries, 25μm is generally used as the standard for th

The main components of a lithium battery are positive and negative electrodes, a separator, an organic electrolyte and a battery casing. Among these structures, the diaphragm is one of the key inner components. The diaphragm serves two main functions. The first function is to act as an insulating layer. The existence of the insulating layer can effectively prevent the internal short circuit of the lithium battery

(1) The overall structure and detailed structure of the stent shall be set in a geometrically invariant system. (2) Horizontal and oblique support connecting rods should be arranged between the uprights of the bracket according to its force requirements and structural characteristics to enhance the overall rigidity and stability of the bracket. (3) When a shaped bowl-buckle steel pipe scaffold is used as a support,

High water pipelines or long water pipelines often produce water column separation due to pressure drop during power outages or pump shutdowns. An air valve can be installed to protect the pipeline. Air valve is sometimes called exhaust valve or intake valve. Install air valves at the high point of the pressure water tank of the pumping station and on the water delivery pipelines to discharge the air in the water