According to foreign media reports, researchers at the University of Waterloo in Canada developed valve timing technology to increase the efficiency of the internal combustion engine by 10%. The method is safe and reliable, and the price is not too expensive. In addition, the valve opening and closing system or Significantly reduce fuel consumption, compact cars will benefit from it.
Amir Khajepour, a professor at the university, said: 'This method may bring benefits to a fully variable valve system. Costs and complexity do not pose a problem either at the laboratory stage or for a production engine.'
Under normal circumstances, intake valves and exhaust valves in internal combustion engines are controlled by cam mechanisms, which usually do not allow variable open/close timing functions.
The new technology uses hydraulic cylinders and swing hydraulic valves. The above equipment can realize fully variable timing. It can be adjusted according to changes in engine speed and torque, so that the valve opening can be adjusted according to the engine operating conditions. Closed time.
This function will play a key role in improving the energy efficiency of the engine and reduce costs and greenhouse gas emissions. Although other systems can also adjust the opening and closing time of valves, such products are limited to the laboratory stage because of their cost. Excessive and complex design.
However, the technology developed and tested by the University of Waterloo in Canada is relatively simple and the price is much lower than similar products, laying the foundation for future promotion and application.
