Influence of test parameters on the operation of automotive high-pressure pumps

Abstract

The service life for the assemblies represents a key factor when it comes to the product robustness. The concern for this factor starts from the beginning of each component manufacturing process. The parameters of the assembly process must be very well established, so that a compact, functional and reliable product to be the result. Thus, the existence of a testing step in the process is indispensable for the proper product functionality checking. Performing of the test procedures that simulate the components operation under certain conditions can take long period of time. This is caused by the multitude of the parameters that must be perfectly adapted according to the product operating capacity. In order to highlight these, our paper performs a comparative analysis between two automotive high-pressure pumps, using two special tests. After testing the two pumps, we noticed that the first one completed the test successfully and the second one failed the test. The purpose of this exercise is to demonstrate that the operating limits of an assembly must be precisely set. Also, a small deviation from the test parameters can lead to the total pump malfunction.