Automatically adjusting hydraulic tappet of engine valve clearance
An engine valve, automatic adjustment technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of extending the normal working time of the hydraulic tappet in the oil supply state of the engine replenishment hydraulic tappet, and the difficulty of returning oil to the hydraulic tappet. , to ensure the effect of normal work
Inactive Publication Date: 2010-12-08
MIANYANG FULIN PRECISION MACHINING
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of difficult oil return inside the hydraulic lifter, to provide a hydraulic lifter with automatic adjustment of the engine valve clearance, which can form an oil return path inside, greatly prolonging the oil supply state of the engine supply hydraulic lifter and Normal working hours of hydraulic lifters
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[0013] The present invention will be further described below in conjunction with accompanying drawing by embodiment:
[0014] preferred embodiment
[0015] like figure 1 and figure 2 The hydraulic tappet with automatic adjustment of the valve clearance of the engine shown in the figure opens an oil hole 9 on the outer surface of the plunger 2 of the hydraulic tappet to connect the low-pressure chamber 8 and the high-pressure chamber 7. When the hydraulic tappet is pressurized, the hydraulic pressure The space of the tappet high-pressure chamber 7 becomes smaller, and the oil in the high-pressure chamber 7 leaks out through the gap between the outer circle of the plunger 2 and the matching surface of the inner hole of the tappet body 1 under high pressure, and the oil passes through the oil hole 9 of the outer circle of the plunger 2 Enter the low-pressure chamber 8 to form the oil return circuit inside the hydraulic tappet. In order to achieve a better effect of the oil ci...
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The invention relates to an automatically adjusting device of an engine valve clearance, in particular to an automatically adjusting hydraulic tappet of the engine valve clearance, aiming to solve the problem of difficult oil return in the hydraulic tappet. An oil hole is arranged in the outer circular surface of a plunger of the original hydraulic tappet and is communicated with a low-pressure cavity and a clearance between the plunger and a tappet body, and the low-pressure cavity and the clearance between the plunger and the tappet body are communicated with a high-pressure cavity; and in order to achieve the effect of better oil return, a ring slot is arranged on the outer circular surface of the plunger and around the plunger, and the oil hole is arranged in the ring slot. When the space of the high-pressure cavity is reduced by pressing the hydraulic tappet, oil in the high-pressure cavity leaks out of a clearance between the matching surfaces of the outer circle of the plunger and the inner hole of the tappet body and enters the low-pressure cavity through the oil hole in the ring slot on the outer circle of the plunger, thereby an oil return path in the hydraulic tappet is formed. The automatic adjusting hydraulic tappet effectively solves the problem of high oil consumption of engine oil not entering the low-pressure cavity at the initial running stage of the engine and is mainly applied to automatically adjusting the oil path of the hydraulic tappet for the engine.
Description
technical field [0001] The invention relates to an automatic adjustment device for an engine valve gap, in particular to a hydraulic tappet used to solve the hydraulic tappet oil circuit circuit. technical background [0002] Existing hydraulic tappets with automatic adjustment of the engine valve clearance, in the initial stage of installation and when the engine is placed for a long time, due to insufficient oil inside the hydraulic tappet or untimely oil supply at the initial stage of engine operation, it is easy to cause the hydraulic tappet to malfunction due to lack of internal oil. Working, the engine (hydraulic tappet) makes abnormal noise. It affects the normal operation of the engine and is difficult to maintain, which greatly shortens the service life of the engine. Contents of the invention [0003] The purpose of the present invention is to solve the problem of difficult oil return inside the hydraulic lifter, to provide a hydraulic lifter with automatic adju...
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Inventor 谭建伟阳宇李严帅向明朗廖建洪王军何兴洋任彦平向海波
Owner MIANYANG FULIN PRECISION MACHINING