PRINCIPLES OF ENGINE LUBRICATION & RECIPROCATING ENGINE LUBRICATION
When two metallic surfaces under direct contact move over each other, they create friction which generates heat. This causes excessive wear and tear of those moving parts. However, when a film of lubricating matter separates them from each other, they do not come in physical contact with each other. Thus, lubrication is a process that separates the moving parts by supplying a flow of a lubricating substance between them. The lubricant could be liquid, gas or solid. However, engine lubrication system mainly uses liquid lubricants.
The oil fling dispersed by the rotating crankshaft lubricates the cylinder walls and piston-pin bearings. The excess oil is scraped off by the scraper rings on the piston. The engine oil also lubricates camshaft bearings and the timing chain or gears on the camshaft drive. The excess oil in the system then drains back to the sump.
IMPORTANCE OF ENGINE LUBRICATION SYSTEM:
1. Minimizes power loss by reducing the friction between the moving parts.
2. Reduces the wear and tear of the moving parts.
3. Provides cooling effect to the hot engine parts.
4. Provides cushioning effect against vibrations caused by the engine.
5. Carries out the internal cleaning of the engine.
6. Helps piston rings to seal against high-pressure gases in the cylinder.
The engine lubrication system is to distribute oil to the moving parts to reduce friction between surfaces. Lubrication plays a key role in the life expectancy of an automotive engine . If the lubricating system fail, an engine would succumb to overheating and seizing very quickly. An oil pump is located on the bottom of the engine. The oil is pulled through a strainer, by the oil pump, removing larger contaminants from the mass of the fluid.
GROUP 4: Christopher Pérez, Amy Ponluisa, Kevin Segovia & Franklin Minchala
PRINCIPLES OF ENGINE LUBRICATION & RECIPROCATING ENGINE LUBRICATION
The oil then forced through an oil filter under pressure to the main bearings and the oil pressure gauge. It is important to note that not all filters perform the same. A filter’s ability to remove particles is dependent upon many factors, including the media material (pore size, surface area and depth of filter), the differential pressure across the media, and the flow rate across the media. From the main bearings, the oil passes into drilled passages in the crankshaft and the big-end bearings of the connecting rod.
COMPONENTS OF ENGINE LUBRICATION SYSTEM:
1. Oil Sump
2. Engine oil filter
3. Piston cooling nozzles
4. Oil Pump
5. The Oil Galleries
6. Oil Cooler
7. The Oil pressure indicator/light
9. Tappets and push-rods
10. Oil pump parts
11. Water pump bearings
12. In-Line Fuel Injection Pump bearings
13. Turbocharger bearings (if fitted)
14. Vacuum pump bearings (if fitted)
15. Air-compressor piston and bearings (in commercial vehicles for air-brake)
Engine lubrication system supplies the engine oil to the following parts:
1. Crankshaft main bearings
2. Big end bearings
3. Piston pins and small end bushes
4. Cylinder walls
5. Piston rings
6. Timing Gears
7. Camshaft and bearings
8. Valves
GROUP 4: Christopher Pérez, Amy Ponluisa, Kevin Segovia & Franklin Minchala
RECIPROCATING ENGINE LUBRICATION SYSTEM
CHRISTOPHER MICHAEL PEREZ BALDA
Created on June 2, 2022
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Transcript
PRINCIPLES OF ENGINE LUBRICATION & RECIPROCATING ENGINE LUBRICATION
When two metallic surfaces under direct contact move over each other, they create friction which generates heat. This causes excessive wear and tear of those moving parts. However, when a film of lubricating matter separates them from each other, they do not come in physical contact with each other. Thus, lubrication is a process that separates the moving parts by supplying a flow of a lubricating substance between them. The lubricant could be liquid, gas or solid. However, engine lubrication system mainly uses liquid lubricants.
The oil fling dispersed by the rotating crankshaft lubricates the cylinder walls and piston-pin bearings. The excess oil is scraped off by the scraper rings on the piston. The engine oil also lubricates camshaft bearings and the timing chain or gears on the camshaft drive. The excess oil in the system then drains back to the sump.
IMPORTANCE OF ENGINE LUBRICATION SYSTEM: 1. Minimizes power loss by reducing the friction between the moving parts. 2. Reduces the wear and tear of the moving parts. 3. Provides cooling effect to the hot engine parts. 4. Provides cushioning effect against vibrations caused by the engine. 5. Carries out the internal cleaning of the engine. 6. Helps piston rings to seal against high-pressure gases in the cylinder.
The engine lubrication system is to distribute oil to the moving parts to reduce friction between surfaces. Lubrication plays a key role in the life expectancy of an automotive engine . If the lubricating system fail, an engine would succumb to overheating and seizing very quickly. An oil pump is located on the bottom of the engine. The oil is pulled through a strainer, by the oil pump, removing larger contaminants from the mass of the fluid.
GROUP 4: Christopher Pérez, Amy Ponluisa, Kevin Segovia & Franklin Minchala
PRINCIPLES OF ENGINE LUBRICATION & RECIPROCATING ENGINE LUBRICATION
The oil then forced through an oil filter under pressure to the main bearings and the oil pressure gauge. It is important to note that not all filters perform the same. A filter’s ability to remove particles is dependent upon many factors, including the media material (pore size, surface area and depth of filter), the differential pressure across the media, and the flow rate across the media. From the main bearings, the oil passes into drilled passages in the crankshaft and the big-end bearings of the connecting rod.
COMPONENTS OF ENGINE LUBRICATION SYSTEM: 1. Oil Sump 2. Engine oil filter 3. Piston cooling nozzles 4. Oil Pump 5. The Oil Galleries 6. Oil Cooler 7. The Oil pressure indicator/light
9. Tappets and push-rods 10. Oil pump parts 11. Water pump bearings 12. In-Line Fuel Injection Pump bearings 13. Turbocharger bearings (if fitted) 14. Vacuum pump bearings (if fitted) 15. Air-compressor piston and bearings (in commercial vehicles for air-brake)
Engine lubrication system supplies the engine oil to the following parts: 1. Crankshaft main bearings 2. Big end bearings 3. Piston pins and small end bushes 4. Cylinder walls 5. Piston rings 6. Timing Gears 7. Camshaft and bearings 8. Valves
GROUP 4: Christopher Pérez, Amy Ponluisa, Kevin Segovia & Franklin Minchala