vvt的翻译

then, primary test of this cam is introduced. this new type cam structure can implement continuous variable valve timing and continuous variable-lift simultaneity, which adapt to the developing tendency of vvt.

这种新型凸轮结构可以实现连续可变气门正时和气门升程，适应了无级式机电一体化可变气门正时和可变气门升程机构的发展趋势。

the test results show that this vvt mechanism is simple in structure, less modification for the engine, low cost for production. it can realize the variable control for valve timing and improve the engine performance markedly.

试验结果表明：该机构结构简单，对原机改动小，成本低，能够实现配气相位的可变控制，明显改善了发动机性能。

a cycle simulation model insetting the vvt mechanism module with tow-mode intake timing parameters was created, and was verified by comparing the simulation results with the engine rig testing data.

建立了嵌入可切换双进气正时VVT系统的发动机循环仿真模型，通过实验测试对仿真模型进行了验证；