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Method for testing rack reliability of engine for fixed fire pump and apparatus thereof

The technology of an engine bench and a test method is applied in the field of a reliability test method of an engine bench for a fixed fire water pump and its device, and can solve the problems of no oil, engine failure, and low oil storage in the main oil passage.

Active Publication Date: 2018-01-09
DONGFENG CUMMINS ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical application of the fixed fire pump engine is quite unique. The engine is usually started every two weeks. If there is very little or no oil in the memory, the rapid lifting will cause the engine to have a short-term oil shortage risk in the bearing bush and power cylinder parts
At present, the reliability test methods of the engine bench are all tested under the condition of the engine is hot and the normal oil pressure is established. The engine reliability assessment for this special application is not sufficient, which will lead to the risk of engine failure in this type of application.

Method used

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  • Method for testing rack reliability of engine for fixed fire pump and apparatus thereof
  • Method for testing rack reliability of engine for fixed fire pump and apparatus thereof
  • Method for testing rack reliability of engine for fixed fire pump and apparatus thereof

Examples

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Embodiment 1

[0053] In this embodiment, a bench reliability test is performed on a 6.7L displacement diesel engine. After the engine and the oil blowing device are installed on the test bench, the oil blowing device includes an air source, a pressure regulating valve, an air cut-off valve and an oil-gas separator connected in sequence, and a solenoid valve for controlling the air cut-off valve. The solenoid valve needs 24V power supply from the bench system.

[0054] Such as figure 2 As shown, after editing the test program on the bench system, start the engine and enter the first cycle working condition. First enter the idling condition, the engine starts to 1000rpm within 5 seconds, the load is 30%; then enters the acceleration condition, the engine speeds up to 2900rpm within 15 seconds, and the load rises to 50%; then the engine enters the loading condition, the engine Keep the rated speed at 2900rpm, and the load increases from 50% to 100%; the engine runs at a constant speed for 7...

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Abstract

The invention relates to a method for testing rack reliability of an engine for a fixed fire pump and an apparatus thereof. The method is a circularly operating test condition. Each circulating test condition consists of an idling condition (1), an accelerated condition (2), a loading condition (3), a rated condition (4), and a shutdown condition (5). The shutdown condition includes an oil blowingprocess; and according to the oil blowing process, air blowing is carried out on a main oil way of an engine to eliminate engine oil in the main oil way. Therefore, reliability and durability of theengine during the full life cycle can be verified.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a reliability testing method and device for an engine bench for a fixed fire-fighting water pump. Background technique [0002] At present, the engine bench test method does not strictly distinguish according to the type of engine, such as the fixed fire pump engine, the method of vehicle engine is still used for assessment and verification. However, the practical application of the fixed fire pump engine is quite unique. The engine is usually started every two weeks. If there is very little or no oil in the memory, the rapid lifting will cause the engine to have the risk of short-term oil shortage in the bearing bush and power cylinder parts. At present, the reliability test methods of the engine bench are all tested under the condition of the engine is hot and the normal oil pressure is established. The engine reliability assessment for this special application is not s...

Claims

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Application Information

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IPC IPC(8): G01M15/00
Inventor 殷刚黄谷安陈其志谢平
Owner DONGFENG CUMMINS ENGINE
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