32results about How to "Meet the requirements of ventilation" patented technology

An axially movable multi-mode hydraulic variable valve driving system belongs to the field of engine valve driving. It mainly includes camshaft, camshaft sleeve, axial movement mechanism, valve control mechanism, plunger type oil supply device, piston type driver and oil reservoir, etc. At least a first cam and a second cam are arranged on the camshaft sleeve. Through the use of the axial movement mechanism, the conversion between the two-stroke driving mode, the four-stroke driving mode, the two-stroke braking mode, the four-stroke braking mode and other modes of the engine is realized; further through the use of the valve control mechanism, the final realization It ensures the best ventilation of the engine under different working conditions, and achieves the purpose of comprehensively improving engine power, fuel economy, emission and braking safety. The present invention is proposed for practical application, has high reliability and compact mechanism, and reduces the requirements of the system on each mechanism. Each mechanism adopts a relatively mature technology, and the system has a high practical potential in a short period of time and has a good application prospect.

The invention discloses an intensive locking multi-mode four-bar type variable-valve driving system and belongs to the field of engine valve driving. The system mainly comprises a cam shaft, a mode transmission mechanism, a mode alternative mechanism, mode switching mechanisms, a cam shaft phase position adjusting mechanism, valve adjusting mechanisms, valve control mechanisms and the like. The mode switching mechanism and the cam shaft phase position adjusting mechanism cooperate for use, switching of various modes such as the two-stroke driving mode, the four-stroke driving mode, the two-stroke braking mode and the four-stroke braking mode of an engine is achieved, the requirement for optimum ventilation of the engine under the different working conditions is finally met through cooperation with the valve control mechanisms, and the purpose of comprehensively improving the dynamic property, fuel economy, emission performance and braking safety of the engine is achieved. The intensive locking multi-mode four-bar type variable-valve driving system is simple and compact in structure and easy to arrange, hydraulic mechanisms or mechanical mechanisms and other different mechanisms can be adopted, and a scheme for meeting the different requirements for the flexibility, reliability, cost and the like of a variable valve is provided for a user for selection.