And im not referring to the home video electronic. I referring to Nissans new engine technology, I just wanna see a good explaination
This new 4-banger will feature Nissan's new VCR Piston Crank System. "VCR" stands for Variable Compression Ratio, and it does just that by using a multilink connecting rod/crankshaft arrangement.
In light load conditions, it will use high compression ratio and limited turbo boost to increase thermal efficiency and improve fuel economy. When stronger acceleration is required, the system will shift to a lower compression ratio and increase turbo pressure. The lower compression ratio allows higher boost to be used for greater power creation while avoiding knock or detonation.