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Двигатели Стирлинга

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Архивы рубрики: An Introduction to Engine Testing and Development

Engine Lubrication System

The primary purpose of the lubrication system is to supply all mechanical moving parts with a barrier/film of oil on which they can slide. Without oil, the engine will seize due to the effects of friction and the heat generated by the friction, causing the components to weld themselves together in extreme cases. If total

The Basic Internal Combustion Engine

Introduction When considering the performance of the internal combustion engine under test, the technician must have a strong appreciation of how the engine functions with regard to its individual systems. The systems referred to here are shown in Figure 11.1 and are as follows: 1. Engine lubrication system 2. Engine cooling system 3. Engine induction

Quality

Quality is everything in engine testing, and good workmanship is one of the main con­tributors to a high-quality company Best practices are always open to amendment for the sake of improvement; however, they should never be ignored. Commonly Occurring Incidents When Testing Engines on Dynamometers Damaged Valve or Piston and Bore This type of incident

Cleaning

After fitting, clean the engine, bedplate, and cell floor thoroughly. This will help you to quickly spot any leakages that develop after the fitting operations are complete and the engine is running. The earlier a leak is found and remedied, the less likely dam­age and wear will take place internally in the engine, which could

Golden Rule for Handing Over

If, for any reason, you must pass the fitting operation to another technician (e. g., shift changing), the golden rule is to ensure that “what you fit is secure.” If you do not have the time to secure it, then do not fit it. The next technician then can carry on work, know­ing that what

Rebuilding

Replace all parts with new seals and gaskets as required and assemble in a logical and methodical manner, counting all the fixings back onto the engine assembly. The com­ponent layout and fixing containers should be empty upon completion of the rebuilding, apart from items that have been renewed (e. g., washers, lock nuts). Any items

Checking and Inspecting

All parts should be checked for serviceability as they are removed. Those components found to be unserviceable should be labeled correctly, in accordance with company pro­cedures, and stored separately from the reusable components. Certain key components bear closer examination and, in some cases, replacement as a pre-emptive measure, rather than risk a failure on test.

Stripping

All parts, fasteners, and other removed items should be collected and placed in a con­tainer or storage area away from the bed plate and engine assembly. All components that are removed should be laid out in the order in which they were removed. Note that it is important to count all fasteners and associated washers,

Fitting Operations Within the Test Ceil Best Practices

In the engine testing industry, great care, vigilance, and diligence are prerequisites. Methodical, meticulous, and, in some cases, well-documented records of fitting tasks are required to assure high-quality service. When considering this statement, bear in mind the following points. Many of the engines and much of the test equipment used in the test industry are

Turbocharger Matching

The performance of a turbocharger is dependent on the angle of gas entry to the impel­ler, diffuser, and turbine rotor. A correct match will be obtained only when the mass flow rate is correct for a specified rotor speed. It is apparent that the turbocharger will not operate at its high-efficiency flow condition over the