Design of Laboratory Test Equipment for Automotive Oil Filters to Evaluate the Technical Life of Engine Oil

Hujo Ľubomír,Zastempowski Marcin,Tulík Juraj,Simikić Mirko,Markovič Jaromír,Jablonický Juraj,Janoušková Romana

doi:10.3390/app11020483

Abstract

The main aim of the article is to present the design of laboratory test equipment, which is appropriate for monitoring the efficiency of oil filters and the system for evaluating the technical life of engine oils in terms of possible extension of service intervals. The functionality of the designed laboratory test equipment for the filtration of motor oils was verified by a practical experiment with a verification measurement and assessment of the suitability of the hydraulic circuit elements and the designed sensing equipment. The laboratory equipment enables the testing of oil filters with different filtration capacity during simultaneous testing in two separate hydraulic circuits with differently contaminated engine oil, while it enables laboratory measurements to be performed while simulating operating conditions.

Highlights

The lubrication system is an integral part of the reciprocating internal combustion engine, which we consider to be the most used power unit
The laboratory equipment for the evaluation of engine oil filtration was designed to assess the properties of various engine oil filters and their filtration capabilities
Tests on this equipment will shorten the testing time of oil filters, as they are not tied to the operating conditions of the intercity bus, but we will induce the operating conditions by simulation

Summary

Introduction

The lubrication system is an integral part of the reciprocating internal combustion engine, which we consider to be the most used power unit. The lifetime and stability of lubricating oils depends on the operating conditions, especially on the operating temperature of the oil, the technological process of lubrication, the design of the lubrication system and the working environment. Normal operating oil temperature is in the range of 50 ◦ C to 70 ◦ C. Each increase of the operating temperature by 10 ◦ C shortens the life of the oil lubricant in the lubrication system by 1/3 to 1/2, which is a big disadvantage. The solution to the problem, in the event of higher operating temperatures, is to modify the lubrication system, e.g., by using a cooler, changing the size of the oil tank, adjusting the circulation number, or other design modifications [1]

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