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A control method and isobaric technology, applied in engine components, fuel injection pumps, machines/engines, etc., can solve the problems of poor control reliability, cumbersome assembly and disassembly, low efficiency, etc., and achieve good control reliability, reduce production costs, Efficient effect
Inactive Publication Date: 2018-05-29
NANJING WEIFU JINNING
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[0003] In order to solve the above technical problems, the present invention proposes a control method for the performance of an isobaric valve, which solves the problem of poor control reliability, low efficiency, high cost and cumbersome assembly and disassembly in traditional control methods by controlling the pre-tightening length instead of controlling the opening pressure of oil supply. problems, without the need for special equipment, can effectively reduce production costs, improve the first pass rate and production efficiency
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[0033] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 with Figure 7 As shown, a control method for the performance of an equal pressure valve, the equal pressure valve includes a tight seat 1, a gasket 2, an oil outlet valve spring 3, an oil outlet valve core 4, an oil outlet valve seat 5, a steel ball 6, and a spring upper seat 7. The spring lower seat 8 and the oil return valve spring 9 include the following steps:
[0034] 1) Clean the parts, clean the tight seat, gasket, oil outlet valve spring, oil outlet valve core, oil outlet valve seat, steel ball, spring upper seat, spring lower seat and oil return valve spring;
[0035] 2) Assemble the coupling part 10 and the tight seat part 11 respectively, and put the gasket and the oil outlet valve spring in the tight seat in turn to form the tight seat part; put the spring lower seat and the oil return valve spring in the oil outlet valve seat in sequence , spring upper seat, steel ball and oi...
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Abstract
The invention discloses a method for controlling the performance of an equal pressure valve. The equal pressure valve comprises a tight seat, a gasket, an oil outlet valve spring, an oil outlet valve core, an oil outlet valve seat, a steel ball, a spring upper seat, a spring lower seat and an oil return valve. Valve springs, including the following steps: cleaning parts, assembling coupling parts and tight seat parts separately, measuring height of coupling parts, measuring depth of tight seat parts, adjusting pre-tightening length, final assembly, running-in, oil return opening pressure adjustment, measuring and packaging storage, Oiled, packaged and put into storage. The invention solves the problems of poor control reliability, low efficiency, high cost and cumbersome assembly and disassembly in the traditional control method of equal pressure valve performance by controlling the pre-tightening length instead of controlling the opening pressure of the oil supply, and the invention does not need special equipment, It can avoid repeated assembly and disassembly of isobaric valve tight seat parts and coupling parts, effectively reduce production costs, and improve first pass rate and production efficiency.
Description
technical field [0001] The invention relates to an equal pressure valve, in particular to a method for controlling the performance of the equal pressure valve. Background technique [0002] Equal pressure valve, also known as equal pressure oil outlet valve, is used in high pressure oil pump. Through certain parameter adjustment, it can control the residual pressure of high pressure chamber, and then achieve the effect of controlling the oil supply consistency of high pressure pump and avoiding cavitation in high pressure chamber. The equal pressure valve usually includes tight seat, gasket, oil outlet valve spring, oil outlet valve core, oil outlet valve seat, steel ball, spring upper seat, spring lower seat, oil return valve spring and other components. When assembling, firstly, put gaskets and oil outlet valve springs into the tight seat in order to form a tight seat; then, put the spring lower seat, oil return valve spring, spring upper seat, steel ball and The oil outl...
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