Camshaft construction

Camshaft structure, oil pump camshaft manufacturers for you to introduce it:

The main body of the camshaft is a cylindrical rod of the same length as the cylinder. It is covered with a number of cams, and the other end is connected with the driving wheel.

The side of the CAM is in the shape of an egg. The purpose of the design is to ensure that the cylinder full intake and exhaust, as far as possible in a short time to complete the valve open and close action. In addition, considering the durability and running smoothness of the engine, the valve should not generate too much impact due to the deceleration process in the open-close action, otherwise it will cause serious wear and tear of the valve, increase of noise or other serious consequences. Therefore, the CAM and engine power, torque output and smooth operation of a very direct relationship.

Generally speaking, in a inline engine, a CAM corresponds to a valve. V - type engines or horizontal opposed engines share a CAM for every two valves. The rotor engine and valveless valve engine do not need CAM because of their special structure.

In order to achieve lightweight, easy to process and low cost, as well as the high speed and high output power of the engine, the design of engine components, especially the camshaft, must be reconsidered, requiring its compact structure, highly concentrated function, light weight, can withstand higher contact pressure. In the current application of camshaft, the cylinder head lubrication system has been concentrated on the hollow camshaft, and the fuel pump driving component with in-cylinder direct injection has been realized on the camshaft, and the VVT(variable timing valve) has been used at the end of the camshaft. In the valve mechanism, the performance requirements of each part of the camshaft are different. For CAM and fuel pump driving wheels, wear resistance, adhesion resistance, pitting corrosion resistance; Good sliding performance is required for journal. For the shaft is required rigidity, bending, torsion performance is good.