FAQ: A Fuel-cooled Oil Cooler?

What is the purpose of the fuel cooled oil cooler?

What is FOHE? The Fuel Cooled Oil Cooler (FCOC) / Fuel Oil Heat Exchanger (FOHE) exchanges heat between the engine oil and fuel streams. Heat is exchanged in such a manner that the engine oil is cooled whilst the fuel is heated up.

How does an aircraft oil cooler work?

Air oil cooler. The fuel-cooled oil cooler acts as a fuel oil heat exchanger in that the fuel cools the hot oil and the oil heats the fuel for combustion.

Can a oil cooler be water cooled?

The coolant is radiator water, that’s why we can get a stabilized cooling efficiency. It is possible to set a very short oil line in between the engine and the core. Even if you’re not driving, it is possible to get the cooling effect just by making the engine run.

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What are the two basic types of oil coolers?

Engine oil coolers come in many types and sizes. Choosing the right oil cooler for your street rod calls for these six basic considerations. There are two basic types of oil coolers: tube and fin, and plate or stacked plate, which works the same way but employs a different architecture with more surface area.

How do you know if your oil cooler is bad?

Signs of an Oil Cooler Gasket Issue

  1. Oil Leak. When the oil cooler gasket fails, it is unable to keep oil in.
  2. Overheating Engine. Oil is circulated through your engine keeping it cool.
  3. Contaminated Oil.
  4. Decreased Engine Performance.
  5. Black Smoke.
  6. Vibrations.
  7. Expanded Radiator.
  8. Engine Temperature Changes.

What are the benefits of an oil cooler?

Oil coolers extend the life of your vehicle’s engine and reduce the chance of overheating under extreme conditions. For example, if you haul a trailer uphill for long distances, then chances are that your engine works at maximum capacity for a long time. This creates a lot of heat that needs a way to dissipate.

How do you inspect an oil cooler?

Submerge the oil cooler in a tank of water. Pressurize the oil cooler, using the compressed air supply, to approximately 0.8 bar (12 psi). Look for evidence of air bubbles coming from the oil cooler. If bubbles are present, replace the cooler element.

What is an oil cooler bypass valve?

The bypass valve – otherwise known as a pressure relief valve – is an integral part of the oil filter. The valve is designed to open when the oil filter becomes clogged or when the oil is too thick. This allows the oil to bypass the filter through a center tube.

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When would the oil cooler be removed from service?

Aside from collisions, an oil cooler system should not require replacement for several years, and at least 100,000 miles. This will decrease with lack of maintenance and severe operating conditions. The oil cooler lines will likely require resealing long before the oil cooler has a chance to fail.

Does oil cool better than water?

Oil is a less severe cooling medium than water, as most heat-transfer oils have less than half the heat capacity of water. But more importantly, these cooling oils do not vaporize at processing temperatures, which helps to eliminate instability while reducing energy losses.

Do oil coolers increase HP?

RE: Do Oil Coolers increase hp.? The benefit of the oil cooler is helping maintain viscosity. Sorry no horsepower gain.

Can I bypass engine oil cooler?

you do not need a cooler. You can always bypass an OEM oil cooling system and install an aftermarket system but in your circumstances if it is properly installed, the OEM system is fine. Transmission oil coolers can leak into the coolant, too, so be sure that is not the issue.

When the oil is cold the oil will bypass the oil cooler?

For most engine models, an oil filter also requires an oil filter adapter. While the oil is cold, this system allows oil to flow through the oil filter without passing through the oil cooler. As oil temperature rises to approximately 180˚ F, the valve closes and forces the oil to pass through the oil cooler.

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What size oil cooler do I need?

Be sure to choose a size that will not be too small and restrictive, as this will cause a drop in oil pressure. Most find that -8an or -10 an size fittings are sufficient. Also be sure to try and minimize length and number of bends in the oil lines as your run them to the coolers location.

How do hydraulic oil coolers work?

Air-cooled hydraulic-oil coolers dissipate heat by forcing cold air over hot fluid inside a heat exchanger. They typically have low operating costs and are simple to maintain. Other cooler types include refrigerated chillers and evaporative cooling towers.

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