What is Springless Valve System

What is Springless Valve System? Before answering the question, it is necessary to consider the working principle of motors. Internal combustion engines work in two or four-stroke stages. At these stages, air and fuel are taken into the cylinder, compressed, burned, and while the residual gases are expelled, power is produced by converting combustion energy (chemical energy) into motion energy (kinetic energy). In order to take air and fuel into the cylinder and to transfer the gases formed, cap-like structures (valves) at the top of the cylinder are opened and closed at certain periods. Relevant products are transferred to the cylinder from the opened spaces or taken out of the engine by cylinder movement. A spring is placed on the stem at the back of the valves and it enables the valve to open with the pushing force. At the top, there is a flat surface, and the cam-shaped structure on the camshaft exerts pressure here, keeping the valve closed. What are the Disadvantages of Springless Valves? Let's take a look at the springless valve disadvantages. Spring systems are generally used in engines. The cam system determines the valve closing times with the help of a certain profile, and the spring determines the valve opening times. In some applications that require high rpm, when the engine is run at 10000 rpm or higher, the springs resonate and lose their springiness. This causes the cylinder and the valves to collide with each other and causes major malfunctions in the engine. How Does a Springless Valve Work? In the springless valve system, the cam structures used in the same closing system are used instead of springs to open the valves. In the camshaft, two cams serve instead of one, and this camping mechanism performs the on-off situations. Thus, resonance-based problems that may occur when the motors are at high speeds are prevented. The disadvantage of this system is the friction problems and noise problems that come with an extra cam mechanism. In addition, this system has shorter maintenance times compared to the spring system, but it brings a heavy camshaft and more processing costs.