The cleaning and maintenance of aviation piston engine is an important link to ensure its normal operation and extend its service life. The following are the main points of cleaning and maintenance of aviation piston engines:
First, regular replacement and inspection
Replace engine oil, oil filter, air filter:
Replace the engine oil regularly: the engine oil will gradually deteriorate during use, affecting the lubrication effect. Therefore, the engine oil should be changed regularly according to the interval or flight hours recommended by the engine manufacturer.
Replace the oil filter: The oil filter is used to filter impurities in the engine oil to prevent impurities from entering the engine interior and causing wear. The oil filter should be replaced regularly to ensure its filtering effect.
Check and replace the air filter: The air filter is used to filter impurities from the air entering the engine to prevent impurities from entering the cylinder and causing wear. The cleanliness of the air filter should be checked regularly and replaced as needed.
Check the oil system:
Keep the oil clean: the oil will carry impurities during the lubrication process, affecting the lubrication effect. The oil should be changed regularly, and the specified grade of oil should be used.
Replace the oil filter element: The oil filter element is used to filter impurities in the oil and prevent impurities from entering the engine. The oil filter element should be replaced regularly to ensure its filtering effect.
Check the oil consumption: If the oil consumption is found to increase significantly, the cause should be analyzed in time and the fault should be eliminated.
Second, system inspection and maintenance
Check the fuel system:
Check the fuel pump, fuel injector, fuel filter, etc. : ensure that the fuel system is operating normally and there is no leakage.
Clean the fuel system regularly: Clean the fuel system with a suitable cleaning agent to remove carbon deposits and impurities and keep the fuel system unblocked.
Check the ignition system:
Check the ignition coil, high voltage wire, spark plug, etc. : ensure that the ignition system is working properly and the spark strength meets the requirements.
Replace the spark plug regularly: the spark plug will gradually wear out during use, affecting the ignition effect. The spark plug should be replaced regularly to ensure its ignition performance.
Check the intake system:
Check the wear and deformation of the cylinder valves, piston rings and their gaskets: ensure that the intake system is well sealed without leakage.
Clean the intake system regularly: Clean the intake system with a suitable cleaning agent to remove carbon deposits and impurities and keep the intake system unimpeded.
Check the cooling system:
Check the water tank, water pump, radiator, etc. : Ensure that the cooling system is working properly and there is no leakage.
Clean the cooling system regularly: Use a suitable cleaning agent to clean the cooling system, remove scale and impurities, and keep the cooling system smooth.
Third, cleaning methods and precautions
Cleaning method:
Washing method: wash the surface of the engine with cleaning oil to wash away the oil and dust on the surface. Suitable for routine engine cleaning after flight.
Running cleaning method: Let the engine run for a period of time, use fuel and cleaning agent to clean the inside of the engine. Suitable for cleaning poor combustion products.
Irrigation method: The cleaning oil is poured into the engine from the engine inlet, exhaust port or electric plug hole, and then turn the crankshaft to clean the parts in motion. Suitable for regular routine cleaning and storage time is not long to re-use the engine.
Immersion method: Soak the engine in cleaning oil, turn the crankshaft to clean the engine parts. Suitable for newly purchased engines or engines that have been stored for a long time to be re-used.
Disassembly cleaning method: After the engine is disassembled, the parts are soaked in cleaning oil, and each part is washed with a soft brush. It is suitable for when the parts in the engine are damaged or the phenomenon of sticking, collision, grinding, etc.
Note:
Choose the right cleaning agent: Choose the right cleaning agent according to the purpose of cleaning and the type of impurities. At the same time, the external ambient temperature should be considered to avoid the corrosion of the cleaning agent on the metal or non-metal.
Ensure the cleaning quality: During the cleaning process, ensure that the cleaning agent fully contacts the parts that need to be cleaned to remove carbon deposits and impurities. Dry thoroughly after cleaning to avoid residual water solution.
Prevent secondary pollution: The parts after cleaning should be immediately covered with bags and sealed to prevent secondary pollution.
Follow the operating procedures: During the cleaning process, follow the recommended operating procedures and maintenance precautions of the engine manufacturer to ensure the cleaning effect and engine performance.
Fourth, daily maintenance and use suggestions
Keep the engine vent unblocked: regularly check whether the engine vent is unblocked to prevent the engine from overheating due to blockage.
Correct use of the engine: the operation should be gentle and avoid rapid acceleration and deceleration. Warm the machine after the cold start, and cool the machine before stopping.
New engine running-in: The new engine, the newly renovated engine or the engine that has replaced the cylinder and the ring should be run in with the specified power and use the special running-in oil.
Regular inspection and maintenance: Regular inspection and maintenance work according to the recommended interval or flight hours of the engine manufacturer, timely detection and troubleshooting.
To sum up, the cleaning and maintenance of aviation piston engine involves many aspects and links. Through regular replacement and inspection, system inspection and maintenance, the use of appropriate cleaning methods and precautions, and daily maintenance and use recommendations, you can ensure the normal operation of the engine, extend the service life and reduce maintenance costs.
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