Oil cooling refers to a process whereby heat is displaced from a ‘hotter’ object, into a cooler oil and is the principle behind oil cooler devices. The oil carrying the displaced heat usually passes through a cooling unit such as a radiator or less commonly a gas decompresser. The cooled oil repeats this cycle, to continuously remove heat from the object.An assembly for cooling oil in the lubrication system of an internal combustion engine. Oil coolers are installed mainly in motor vehicles, whose engines often operate under difficult thermal conditions. Oil coolers may be of the air-cooled or water-cooled type. The air-cooled oil cooler consists of brass tubing to which cooling fins are soldered. The oil circulated in the tubing by the oil pump is cooled by air when the vehicle is in motion. The oil cooler is connected to the lubrication system in parallel with the main oil pressure line. The cooled oil is returned to the crankcase of the engine.
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- Oil cooler can be connected to through hoses to the high-performance blocks by removing the plugs above the oil filter pad.
- It also contributes to lowering the engine-temperature. Of the three engine cooling systems, oil cooling is the most promising for getting big cooling gains with relatively little effort. It is necessary to keep the temperature of the oil, needed for the functioning of the engine and its subsystems, under control. Too high temperatures lead to a rapid degradation of the oil’s lubrication characteristics with the risk of damaging mechanical parts.
- They may be designed to exchange heat between oil and air rather than oil and the coolant in the engine cooling circuit.
- The latter involves simplified oil circuits and low costs if compared to the oil-air solutions, which offer higher performances and do not imply an additional thermal load for the radiator.
- An oil cooler is a separate, smaller radiator from an engine’s main radiator, which maintains an oil supply at a consistent, optimal temperature.
- Broadly put, lower oil temperatures prolong the life of an engine or transmission.
- An oil cooler can play an important role in the smooth running of a vehicle by dissipating heat while transporting oil away from moving parts into the oil pan.
- The optimum temperature for oil is between 180 and 200 degrees Fahrenheit.
- Failures start to occur when oil cannot dissipate its collected heat fast enough and rises past this threshold.
- As it begins to break down, oil loses its lubricating, as well as its cooling, properties.
- While a majority of cars are not manufactured with proprietary engine oil coolers, there is a large aftermarket for them, and they are common accessories in vehicles involved in towing and other heavy-duty applications.
- Oil cooling kits exist for both motors and automatic transmissions.
- In engines, oil not only functions as a lubricant but also as the coolant for a number of parts.
- A motor’s bottom end, which includes parts such as the crankshaft, bearings, camshaft, rods, and pistons, is cooled only by engine oil.
- Oil has a higher boiling point than water, so it can be used to cool items 100°C or higher.
- Oil is an electrical insulator; thus, it can be used inside of or in direct contact with electrical components.