Online machine oil sampling device and diesel engine therewith

Abstract

The invention discloses an online machine oil sampling device. The device comprises a connecting piece which is arranged on the end part of the online machine oil sampling device and is used for connecting a diesel engine; a pressure reducing valve which is connected to the downstream part of the connecting piece; and a switch which is connected to the downstream part of the pressure reducing valve. The online machine oil sampling device provided by the invention allows the pressure reducing valve to be arranged on the downstream part of the connecting piece to reduce the pressure of high pressure oil, so the pressure of the oil at the switch has been reduced, thereby when the switch is opened to sample, the oil stably flows out and the safety of the oil sampling process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of hydraulic pressure, in particular to an online sampling device for engine oil. In addition, the present invention also relates to a diesel engine provided with the above-mentioned engine oil online sampling device. Background technique [0002] The reliability test of the diesel engine is an important means to evaluate the comprehensive performance of the diesel engine. Since the friction and wear of the diesel engine during operation will cause body vibration, fuel leakage and cylinder damage of the diesel engine, which will affect the performance of the whole machine, therefore, through the diesel engine Reliability test Real-time analysis of diesel engine wear helps to understand the real-time state of the diesel engine, which is of great significance to the normal and reliable operation of the diesel engine. [0003] At first, the evaluation of the reliability test of the diesel engine was mainly bas...

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Problems solved by technology

[0005] In the past, the method of obtaining oil samples was mainly to use a hand-held sampling tube to obtain oil samples from the oil pan after the diesel engine stopped. If it is improper, accurate oil samples cannot be obtained; secondly, the sampling tube needs to be replaced every time the oil sample is taken, which is costly

[0007] Although the above-mentioned existing oil on-line sampling device satisfies the function of on-line sampling for diesel engines, there are certain safety hazards during sampling because the oil pressure is relatively high when the diesel engine is in operation.

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