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

The invention relates to a locking-type multi-mode four-rod variable valve driving system, and belongs to the field of engine valve driving. The locking-type multi-mode four-rod variable valve driving system mainly comprises a camshaft, a mode input mechanism, a mode output mechanism, a mode switching mechanism, a valve adjusting mechanism, a valve control mechanism and the like. By the adoption of the mode switching mechanism, an engine can be switched between multiple modes including a two-stroke driving mode, a four-stroke driving mode, a two-stroke braking mode, a four-stroke braking mode and the like. Furthermore, due to the fact that the mode switching mechanism and the valve control mechanism are matched for use, optimal ventilation of the engine under different working conditions is realized ultimately, and the purpose of comprehensively improving the engine dynamic property, fuel economy, emission performance and braking safety is achieved. The locking-type multi-mode four-rod variable valve driving system is put forward oriented to practical applications, reliability is high, the structure is compact, the requirements for all the mechanisms by the system are lowered, mature technologies are adopted in all the mechanisms, the practical potential of the system in the short term is high, and the application prospects are good.

The invention discloses an intensive locking type multi-mode lever type variable air valve driving system and belongs to the field of engine air valve drive. The intensive locking type multi-mode lever type variable air valve driving system mainly comprises a camshaft, a mode transmission mechanism, a mode alternative mechanism, a mode switching mechanism, a camshaft phrase adjusting mechanism, an air valve adjusting lever, an air valve control mechanism and the like. By the cooperative using of the mode switching mechanism and the camshaft phrase adjusting mechanism, switching among a plurality of modes, such as a two-stroke driving mode, a four-stroke driving mode, a two-stroke braking mode and a four-stroke braking mode is achieved. Further by the cooperative using with the air valve control mechanism, the requirement of an engine for the best air change under the different working conditions is met finally, so that the purpose of improving power performance, fuel economy performance, emission performance and braking security performance of the engine is achieved. The intensive locking type multi-mode lever type variable air valve driving system has the characteristics of simple and compact structure, easy arrangement and low cost.

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 variable valve driving system, and belongs to the field of engine valve driving. The system mainly comprises a camshaft, a mold transmission mechanism, a mold standby mechanism, a mold switching mechanism, a camshaft phase adjusting mechanism, a valve adjusting mechanism, a valve control mechanism and the like. The mold switching mechanism is matched with the camshaft phase adjusting mechanism for use to realize conversion among such multiple modes as an engine two-stroke driving mode, a four-stroke driving mode, a two-stroke braking mode and a four-stroke braking mode, and is further matched with the valve control mechanism for use to finally satisfy optimal ventilation requirements of an engine under different working conditions so as to achieve the purposes of comprehensively improving the engine dynamic property, the fuel economy, the emission performance and the braking safety. The system is simple and compact in structure and easy to arrange, and can adopt such different mechanisms as hydraulic forms or mechanical forms to provide different schemes with such requirements as variable valve flexibility degree, reliability and cost to users.

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.

The invention belongs to the field of engine valve driving and discloses an axial-moving multi-mode level type variable valve driving system. The system mainly comprises a cam shaft, a cam shaft sleeve, an axial moving mechanism, a valve adjusting level, a valve control mechanism and the like. At least a first cam and a second cam are arranged on the cam shaft sleeve. By adoption of the axial moving mechanism, shifting among various mode including a two-stroke driving mode, a four-stroke driving module, a two-stroke braking mode, a four-stroke braking mode and the like of an engine is realized, and further, by joint use with the valve control mechanism, optimal aeration of the engine under different working conditions is finally realized, and comprehensive improvement of engine dynamic properties, fuel economy, emission performance and braking safety is realized. The system is provided aiming at practical application and is high in reliability and compact in structure, and requirements of the system on each mechanism are reduced; due to adoption of mature technologies for each mechanism, the system is high in short-term practical potential and has a promising application prospect.

The invention provides an axially-moving multi-mode four-rod variable valve driving system and belongs to the field of engine valve driving. The axially-moving multi-mode four-rod variable valve driving system mainly comprises a cam shaft, a cam shaft sleeve, an axially-moving mechanism, a valve adjustment mechanism, a valve control mechanism and the like. The cam shaft sleeve is at least provided with a first cam and a second cam, and switching between multiple modes such as a two-stroke driving mode, a four-stroke driving mode, a two-stroke brake mode and a four-stroke brake mode of an engine is achieved through the axially-moving mechanism; and furthermore, optimal ventilation of the engine under different work conditions is finally achieved through cooperative use of the axially-moving mechanism and the valve control mechanism, and the purposes of comprehensively improving the power performance, the fuel economy, the emission performance and the brake safety of the engine are achieved. The axially-moving multi-mode four-rod variable valve driving system is provided for the practical application and is high in reliability and compact in structure, the requirements of the system for all the mechanisms are lowered, all the mechanisms adopt relatively mature technologies, and the system is high in practical utilization potential in a short time and has good application prospects.