汽油机可变配气正时机构的数值模拟

Numerical Simulation of Variable Timing Timing Mechanism of Gasoline Engine

可变配气正时系统是汽车工业发展的一个重要的技术成果。目前,它已作为提高发动机性能运用的最广泛通用技术运用在发动机上。进气气流在进气道和气门附近受到的阻力较大,直接导致发动机性能下降。传统的发动机配气系统,只能优化发动机在某些特定工况(如高转速、高负荷)下的性能。相较传统的发动机配气正时相位不改变的状态,可变气门正时技术可以有效适配发动机所有运作工况。这对于提高发动机的性能,具有十分明显的好处。

The variable timing timing system is an importanttechnical achievement for the development of the automotiveindustry. At present, it has been used as the most widely usedtechnology to improve the performance of the engine. Inlet airflow in the inlet and valve near the resistance is greater, leadingto a decline in the performance of the engine directly. Traditionalengine air distribution system can only optimize the performance ofthe engine under certain conditions (such as high speed, high load).Compared to the traditional engine valve timing phase does notchange the state, variable valve timing technology can be effectivefor all the operating conditions of the engine. This is of great benefitto improve the performance of the engine.