How does the exhaust phase regulator work?
The working principle of the exhaust phase regulator is mainly through the installation of a return spring, the torque direction is opposite to the direction of the forward torque of the camshaft, to ensure that the exhaust phase regulator can return normally. In the operation of the engine, with the continuous change of the working condition, the phase of the camshaft needs to be adjusted continuously, and the return spring will rotate alternately with the adjustment of the phase. This movement may lead to fatigue fracture of the return spring, so it is necessary to test the maximum strain generated by the return spring when working to determine the fatigue safety factor of the spring.
The working principle of exhaust phase regulator also involves the concept of engine valve phase, that is, the opening and closing time and opening duration of inlet and exhaust valves represented by crankshaft Angle. The valve phase is usually represented by a circular diagram of the crank Angle relative to the top and bottom dead center crank positions, which can be seen as the process of inhaling and exhaling the human body. The main function of the valve mechanism is to open and close the inlet and exhaust valves of each cylinder according to a certain time limit, so as to realize the whole process of the engine cylinder air exchange supply.
In more specific technical applications, such as VTEC technology, through the intelligent adjustment of the electronic control system, it can realize the automatic switching of two groups of different valve drive cams at low speed and high speed, so as to adapt to the needs of different driving conditions for engine performance. The working principle of VTEC is that when the engine is converted from low speed to high speed, the electronic computer accurately guides the oil pressure to the intake camshaft, and drives the camshaft to rotate back and forth in the range of 60 degrees through the rotation of the small turbine, thus changing the opening time of the intake valve to achieve the purpose of continuously adjusting the valve timing. This technology effectively improves combustion efficiency, increases power output, and reduces fuel consumption and emissions .
What is the role of exhaust phase regulator?
The main function of the exhaust phase regulator is to adjust the camshaft phase according to the changes in the operating conditions of the engine, so as to adjust the intake and exhaust volume, control the opening and closing time and Angle of the valve, and then improve the intake efficiency of the engine, improve the combustion efficiency, and increase the engine power.
The exhaust phase regulator realizes the optimization of engine performance through its working principle. In practical application, when the engine is shut down, the intake phase regulator is in the most lagging position, and the exhaust phase regulator is in the most advanced position. The engine camshaft rotates in the direction of lag under the action of counterclockwise forward torque. For the exhaust phase regulator, its initial position is in the most advanced position, so the camshaft torque must be overcome to return to the initial position when the engine is stopped. In order to enable the exhaust phase regulator to return normally, a return spring is usually installed on it, and its torque direction is opposite to the direction of the forward torque of the camshaft. When the engine is working, with the continuous change of the working condition, the phase of the camshaft needs to be adjusted continuously, and the return spring will rotate alternately with the adjustment of the phase. This exercise helps to optimize engine performance, including increased power, torque and reduced harmful emissions .
In addition, the design and application of exhaust phase regulators also involves compliance with engine exhaust emission regulations. The camshaft phase regulator has been widely used in gasoline engine with the stricter regulation of automobile exhaust emission. By continuously adjusting the valve overlap Angle, the camshaft phase regulator can flexibly and effectively control the engine inflation efficiency and the amount of residual exhaust gas in the cylinder, thus improving engine performance and reducing harmful emissions .
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