Special endurance test bench for fuel metering valve
A technology for fuel metering valves and durability tests, which is applied to measuring devices, testing of mechanical components, and testing of machine/structural components. Good safety, the effect of controlling the cycle time of working conditions
Active Publication Date: 2015-11-18
北油电控燃油喷射系统(天津)有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide a special durability test bench for fuel metering valves, so that it can simulate the actual working state of the fuel metering valves, independently test the reliability and durability of the fuel metering valves, and have short test periods, high efficiency, high safety, Low cost, so as to overcome the shortcomings of long cycle, high risk, low efficiency and high cost of the existing fuel metering valve durability test
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[0030] The invention provides a durability test bench for a fuel metering valve, which includes a hydraulic unit, a drive controller, a bench and an oil circuit distribution tool installed on the bench. Wherein, the sample to be tested is installed on the oil circuit distribution tool, that is, the fuel metering valve; the hydraulic unit provides the sample to be tested with an oil circuit environment that simulates actual work, and the drive controller controls the valve by sending a drive signal. The fuel metering valve described above reciprocates between fully open and closed, thereby simulating the actual working state of the fuel metering valve and realizing durability testing.
[0031] see figure 1 As shown, the solid lines connecting the various components in the figure represent the oil circuit, and the dotted lines represent the circuit. The hydraulic unit includes an oil tank, an oil delivery pump, and a motor connected to drive the oil delivery pump, and a filter ...
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The invention discloses a special endurance test bench for fuel metering valves. The special endurance test bench comprises a hydraulic unit, a driving controller, a bench frame and a fuel line distribution tooling, wherein the hydraulic unit comprises a fuel tank, a fuel delivery pump and a motor; a pressure storage cavity and a fuel return cavity which are arranged in left-right direction are formed inside the fuel line distribution tooling, the pressure storage cavity is connected with the fuel delivery pump, the fuel return cavity is connected with the fuel tank, installation grooves are formed in the front side and / or rear side of the fuel return cavity, an installation disc matched with a fuel metering valve sample is embedded in each installation groove, and a fuel inlet pore channel communicated with the pressure storage cavity and a fuel return pore channel communicated with the fuel return cavity are formed in each installation disc; and the driving controller drives the fuel metering valve samples to do reciprocating motion between fully open and closed states through sending driving signals. The special endurance test bench can be used for simulating actual operating states of the fuel metering valves, inspecting reliability and durability of the fuel metering valves, and has the advantages of short test period, high efficiency, high safety and low cost.
Description
technical field [0001] The invention relates to a high-pressure common rail system component testing technology, in particular to a special durability test bench for fuel metering valves. Background technique [0002] As we all know, the durability of products in the automotive field is an important technical indicator, especially the reliability and durability of the high-pressure common rail fuel injection system is particularly important to the performance of the engine assembly and even the performance of the vehicle, so the development of fuel injection systems In the process, verification of reliability and durability is a necessary step. The high-pressure common rail pump fuel metering valve is a key component that affects performance and safety in the common rail system. It is a combination of electromagnetic components and mechanical components. It has a relatively complex structure and precise processing requirements, which makes it more potential Therefore, the a...
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IPC IPC(8): G01M13/00
Inventor 秦淑英卢永安
Owner 北油电控燃油喷射系统(天津)有限公司