Stepless variable valve lifting device
A valve lift, variable technology, applied in the direction of valve devices, non-mechanically actuated valves, engine components, etc., to achieve the effect of increasing in-cylinder turbulence, increasing low-speed torque, and simple structure
Inactive Publication Date: 2017-01-04
合肥福地智能科技有限公司
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Problems solved by technology
[0002] In 2016, the number of cars in China will reach 300 million, more and more cars will bring more exhaust emissions, and most cars now do not use variable valve lift technology
Method used
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Embodiment 1
[0013] Such as figure 1 As shown, the structure of the continuously variable valve lift device of the present invention includes a control mechanism of the continuously variable valve lift device and a cam generating mechanism of the continuously variable valve lift device.
[0014] When the engine starts, the timing chain of the engine drives the inclined plane camshaft driving wheel (5) to rotate, and the inclined plane camshaft driving wheel (5) is splined connected with the inclined plane camshaft (4), thereby driving the inclined plane cam (7) to rotate. The inclined cam (7) and the arc cam bearing (3) are elasticized by the valve spring, and they always keep in contact. The rotation of the inclined cam (7) drives the arc cam bearing (3) to rotate, and when the protruding high point of the inclined cam (7) meets the inclined cam (7), the arc cam bearing (3) will be pressed down. The arc cam bearing (3) drives the base (1) to move downward, and the base (1) is directly or...
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The invention provides a stepless variable device which is mainly aimed at an internal combustion engine, is simple in structure and reasonable in manufacturing cost and can lift a valve at different high / low rotating speeds of the engine. At the high rotating speed of the engine, large stroke can be given to the valve, and the air inlet amount of the engine is increased; at the low rotating speed of the engine, small stroke can be given to the valve, and in this way, the turbulent flow in a cylinder can be easily increased, the combustion speed is increased, the low-speed torque of the engine is increased. By means of the technology, the work efficiency of the engine can be comprehensively improved, and the aims of energy conservation and emission reduction are achieved. The stepless variable valve lifting mechanism is characterized by comprising a bevel cam (7), an arc-shaped cam bearing (3) matched with the bevel cam (7), and a bevel cam telescopic mechanism (8). The position of a bevel cam shaft (4) can be adjusted according to the working conditions of the engine, and the continuous stepless valve mechanism lifting variable adjustment is achieved.
Description
technical field [0001] The invention relates to an engine gas distribution device, in particular to a device capable of realizing stepless variable valve lift. Background technique [0002] In 2016, the number of cars in China will reach 300 million, and more and more cars will bring more exhaust emissions, but most cars now do not use variable valve lift technology. The variable valve lift technology can match the appropriate valve lift at different engine speeds, so that the torque is abundant at low speeds, and the horsepower is strong at high speeds. The system uses a small valve lift at low speed, which is beneficial to increase the turbulent flow in the cylinder, increase the combustion speed, and increase the low-speed torque of the engine, while using a large valve lift at high speed can significantly increase the intake air, and then Improving the power output at high speed and improving efficiency can make the engine more energy-saving and environmentally friendly...
Claims
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IPC IPC(8): F01L13/00F01L9/02F01L9/04F01L9/11F01L9/20
CPCF01L13/00F01L9/10F01L9/20
Inventor 张怀
Owner 合肥福地智能科技有限公司