Eaton Char-lynn Motor Description: VTEC is the advanced Motor technology developed by Honda, and the world's first valve control system that can control both valve opening and closing time and lift. Compared with ordinary Motors, VTEC Motors differ in the number and control methods of cams and rockers. They have two different types of valve-driven cams, medium and low speed and high speed, and can be automatically converted by electronic control system adjustment. Through the VTEC system device, the Motor can automatically change the opening time and the degree of lifting of the valve according to the driving condition, that is, change the intake air amount and the exhaust volume, thereby achieving the purpose of increasing power, reducing fuel consumption and reducing pollution.



The design of the VTEC is similar to the use of two different camshafts, one for low speed and one for high speed, but the special feature of the VTEC Motor is that it is designed with one of these two different camshafts. On the camshaft.



In addition to the original pair of cams (primary cam and secondary cam) and a pair of rocker arms (main rocker and secondary rocker) that control two valves, the Honda Motor intake camshaft adds a higher middle. The cam and the corresponding rocker arm (middle rocker arm), the three rocker arms are equipped with a small piston that is moved by hydraulic control.



When the Motor is at low speed, the small piston is in the original position, the three rocker arms are separated, and the main cam and the secondary cam respectively push the main rocker arm and the secondary rocker arm to control the opening and closing of the two intake valves, and the valve lift amount is small, the situation is like ordinary Motor. Although the intermediate cam also pushes the intermediate rocker arm, since the rocker arms are separated, the other two rocker arms are not controlled by it, so the valve opening and closing state is not affected.

When the Motor reaches a certain set high speed, the computer will instruct the solenoid valve to start the hydraulic system, push the small piston in the rocker arm, lock the three rocker arms into one, and drive them together by the intermediate cam, because the intermediate cam is more than the other cams. High, the lift is large, so the intake valve opening time is extended and the lift is also increased.



When the Motor speed drops to a certain set low speed, the hydraulic pressure in the rocker arm also decreases, the piston returns to the original position under the action of the return spring, and the three rocker arms are separated.



The entire VTEC system is controlled by the ECU, receives and processes the parameters of the Motor sensor (including speed, intake pressure, vehicle speed, water temperature, etc.) and outputs corresponding control signals, so that the Motor is controlled by different cams under different speed conditions. Get the power you need.

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