cvvl engine meaning in Chinese
The cvvl engine adopts the consciousness of the continuously variable valve lift technology engine. The valve lift of the traditional engine is fixed, but the actual operating conditions have different requirements for the valve lift of the engine. Therefore, the traditional valve mechanism has certain limitations, which derives the variable valve lift technology (vvl).
After the engine adopts cvvl technology, the valve lift in the high-speed and low-speed regions of the engine can be satisfied, thereby improving the high-speed power and low-speed torque of the engine. It is a high-tech technology in the industry. At present, BMW and Nissan have their The continuously variable valve lift technology realizes the infinitely adjustable valve lift.
Cvvl engine regulation rules:
1. When the engine is under high-speed and high-load conditions, adjust the valve lift for a long time.
2. When the engine is under low-speed and small-load conditions, adjust the small lift of the valve for a short duration.
The realization principle of cvvl:
The cvvl mechanical structure controls the lift through the eccentric shaft, adjusting arm and connecting arm. The first is to precisely control the cvvl motor through the program, and the worm gear mechanism drives the eccentric shaft to rotate, so that the adjusting arm pushes the intermediate swing arm to control the valve lift.
The use of cvvl technology can make the engine respond well in both high-speed and low-speed areas, so that better power efficiency can be obtained at high speeds, and greater torsion torque can be obtained at low speeds to cope with different working conditions.