Variable-engine valve impeller structure
A pusher, valve technology, applied in engine components, machines/engines, mechanical equipment, etc., can solve problems such as damage, damage to air intakes, and reduced horsepower
Inactive Publication Date: 2013-01-09
KYMCO
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Problems solved by technology
However, no matter whether the first or second pusher 21, 22 is pushing the valve 2, the first and second pusher 21, 22 are simultaneously pushed by the camshaft intake cam (not shown in the drawings), Therefore, the moment of inertia of the first and second pushers 21, 22 increases. When the moment of inertia of the first and second pushers 21, 22 increases, the frictional horsepower increases, which in turn reduces the output of the engine 1. In addition, when the moments of inertia of the first and second pushers 21, 22 increase, in order to allow the steam valve 2 to operate normally, and the elastic element 23 that allows the steam valve 2 to reset itself must be properly adjusted. Increase its coefficient of elasticity, that is, the K value of the elasticity should be appropriately increased, so that the steam valve 2 pushed down by the first or second pusher 21, 22 can be normally reset to close the intake passage 2a, but when the After the K value of the elastic element 23 increases, on the one hand, the frictional horsepower will be increased and the output horsepower of the engine 1 will be reduced; Fast, it will cause damage to the valve 2 itself or damage the intake port of the intake port 2, and then the intake port 2 will not be completely closed, so that the engine 1 cannot operate normally.
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[0017] In order to make it easier to understand the structure of the present invention and the effect that can be achieved, it is described as follows in conjunction with the drawings:
[0018] First, see figure 2 , 8 As shown, the engine 3 of the present invention has a crankcase 31 , a group of cylinder bodies 32 arranged on the crankcase 31 , and a group of cylinder heads 33 arranged on the cylinder body 32 .
[0019] Crankcase 31 is provided with a crankshaft (not exported in the figure) inside, and an oil pump 311 is arranged in this crankcase 31, and this oil pump 311 is to send engine oil to a main oil supply passage 312, and this main oil supply passage 312 is communicated with the oil control valve 4 arranged on the cylinder head 33 from the crankcase 31 through the cylinder body 32, and the oil control valve 4 sends machine oil to the oil pressure cylinder 65 located at the cylinder head 32 through the flow channel.
[0020] Cylinder body 32, this cylinder body 32...
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The invention discloses a variable-engine valve impeller structure, which is mainly characterized in that a first air inlet cam, an exhaust cam and a second air inlet cam are arranged in sequence on a camshaft; an air inlet valve impeller is provided with a first impeller which is in rolling contact with the first air inlet cam, a second impeller which is in rolling contact with the second air inlet cam, and a linkage part which is linked with the first impeller or the second impeller and is further used for driving an air inlet valve to be opened and closed; the first impeller is provided with a positioning hole, a through hole and a first jacking roller; the second impeller is provided with a positioning hole, a through hole and a second jacking roller; the linkage piece is provided with a positioning hole, a through hole, and a pressing part which is contacted with the air inlet valve; a shaft rod of the air inlet valve impeller penetrates through the positioning hole of the first impeller, the positioning hole of the second impeller and the positioning hole of the linkage piece; the through hole of the first impeller, the through hole of the second impeller and the through hole of the linkage piece are communicated with one another, so that an oil pressure cylinder is formed; and at least one piston is arranged in the oil pressure cylinder. According to the variable-engine valve impeller structure, the rotary inertia of the air inlet valve impeller can be lowered effectively.
Description
【Technical field】 [0001] The invention relates to a structure of a variable valve pusher for an engine, especially the structure of a variable valve pusher for an engine that can simplify the engineering of the variable head of the engine valve and improve the efficiency of the engine. 【Background technique】 [0002] For the structure of the valve variable head mechanism of the existing engine 1, please refer to figure 1 As shown, the first and second pushers 21, 22 are set above the steam valve 2, wherein the second pusher 22 is a multi-link member, and the first and second pushers 21, 22 can respectively Push the steam valve 2 separately to change the lift of the steam valve 2, that is, when the first pusher 21 is pushing the steam valve 2, the steam valve 2 has a small opening lift; however, the second pusher 22 is pushing When the steam valve is 2, the steam valve 2 is the lift of the maximum opening, thereby, to switch between the intake and exhaust valves of different...
Claims
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IPC IPC(8): F01L13/00F01L1/18F01L1/20
Inventor苏泓瑜丁荣丰
OwnerKYMCO