IMS Operation and Service of Engine Cooling Systems

The component of an engine designed to remove excess heat generated during combustion.

The process of burning fuel and air inside an engine, creating high temperatures.

The temperature at which an engine is designed to operate optimally, balancing performance and longevity.

A type of cooling system that uses flowing air to dissipate heat from the engine.

A type of cooling system that uses a circulating liquid to absorb and transfer heat away from the engine.

The unintended ignition of the fuel-air mixture before the spark plug fires, caused by excessive heat.

The unwanted explosion of the fuel-air mixture inside the combustion chamber before normal ignition, caused by excessive heat or improper fuel mixture.

The damage caused to engine parts due to excessive heat and friction, leading to wear and tear.

A liquid used to cool down an engine.

The process of moving coolant through a system to regulate temperature.

A component that transfers heat from the coolant to air, typically found in front of a vehicle.

A chemical added to water to prevent freezing and corrosion in a cooling system.

A substance that builds up in cooling systems and reduces heat transfer efficiency.

A process that helps keep the coolant flowing through the system to regulate temperature.

The place where the cooling system meets the engine to transfer heat.

The amount of coolant that a cooling system can hold.

A device that measures the specific gravity of a liquid, used to determine the antifreeze concentration.

The weight of a substance compared to the weight of an equal volume of water at a specific temperature.

A measure of how much antifreeze is mixed with water in a cooling system.

The lowest temperature at which a liquid will freeze.

A type of antifreeze designed for long-term use and protection.

A table that shows the freezing point protection offered by different antifreeze concentrations in different cooling system capacities.

Antifreeze is a poisonous liquid with a sweet taste and pleasant smell, making it attractive to children and animals. Keep it out of reach!

Mineral deposits (scale) and dirt can clog the inside of radiators, reducing water flow and cooling efficiency.

Special chemicals are used to clean radiators, but they are corrosive and can damage aluminum parts. Use them carefully!

Radiators can be cleaned by a professional, who can remove mineral deposits by boiling or physically removing the core.

Dirt, leaves, and other debris can block air flow through your radiator; this reduces cooling efficiency and can lead to overheating.

Cracked, worn, or loose fan belts can cause the cooling fan to run slower, impacting cooling performance.

Overly tight fan belts put extra strain on the water pump, alternator, and fan bearings, shortening their lifespan.

Regular inspection and maintenance of your cooling system are crucial for preventing overheating and engine damage.

A phenomenon in high-performance engines where extreme pressure during the power stroke causes tiny vibrations in the cylinder sleeves, leading to the formation and collapse of steam bubbles that erode the sleeve walls.

Thin, replaceable cylinder walls in modern engines that allow for better heat dissipation and easier maintenance.

The space between the coolant and the sleeve wall, where vapor bubbles form during cavitation erosion.

Additives that help prevent cavitation erosion by forming a protective film on the cylinder sleeves.

The process of removing rust, scale, dirt, and grit particles from the coolant.

The pH level of the coolant that can influence the occurrence of cavitation erosion. It's important to maintain the proper pH level.

The protective film formed by coolant conditioners on the cylinder sleeves to prevent cavitation erosion.

The slow release of chemicals and additives from a capsule in a coolant filter to condition the coolant.

The process of testing a thermostat to ensure it opens and closes within the correct temperature range. This is used to identify if the thermostat is stuck in a faulty open or closed position.

When a thermostat stays open or closed, it can disrupt the engine's cooling system, causing it to overheat or run too cool.

A device that regulates the flow of coolant through the cooling system. It opens at a specific temperature to allow coolant to flow and cool the engine.

A type of corrosion that occurs when two different metals come in contact with each other and an electrolyte (such as coolant).

A type of corrosion prevention additive in antifreeze and coolants that reduces the flow of electricity through the coolant.

A mechanical seal that separates the water pump impeller from the external bearing housing.

The process of checking the water pump shaft for excessive play or looseness. This is a way to detect potential wear and tear on the pump.