1. Flexible control of the opening and closing of the intake and exhaust valves, so that the engine parameters are in line with the performance requirements. Variable valve with camshaft realize the valve usually only according to the driving mechanism of the activity of the relationship between the change, rather than independent change.
2, the layout of the engine becomes simple, engine cost reduction. Valve can be deployed according to the type of combustion chamber, in favor of the combustion chamber type.
3, each valve drive is separate, so it is easy to realize the sequential cylinder stop, so that the engine is in a lower fuel carving state, less fuel consumption.
4, can be shifted by changing the intake late shut-off angle, so that the compression ratio of multi-fuel engines to transform to meet the requirements of fuel differences.