Why cooling of an internal combustion engine is necessary?

The cooling system serves three important functions. First, it removes excess heat from the engine; second, it maintains the engine operating temperature where it works most efficiently; and finally, it brings the engine up to the right operating temperature as quickly as possible.

How does temperature affect engine efficiency?

The cylinder temperature affects the engine fuel efficiency, knocking, exhaust gas temperature and particularly NOx emission. An increase in manifold air temperature results in higher NOx emission, heat transfer and knocking tendency.

What is the temperature inside internal combustion engine?

The temperature of the burning gases in the engine cylinder reaches up to 1500 to 2000°C, which is above the melting point of the material of the cylinder body and head of the engine. (Platinum, a metal which has one of the highest melting points, melts at 1750 °C, iron at 1530°C and aluminium at 657°C.)

How do you control the combustion temperature?

One way of lowering the combustion temperature is the use of FGR, where a part of the stream of flue gas is taken from the cold end of the boiler and returned to the furnace. FGR increases the flue-gas mass flow to be heated by combustion and thus cools the flame.

Why is a cooling system necessary?

Internal combustion engines remove waste heat through cool intake air, hot exhaust gases, and explicit engine cooling. Thus, all heat engines need cooling to operate. Cooling is also needed because high temperatures damage engine materials and lubricants and becomes even more important in hot climates.

How does temperature affect performance?

Working in an environment that is too hot can make workers lethargic and unfocused. Heat stress can cause the body to lose electrolytes and water faster, causing low mental performance and decreased motor skills.

Why does my engine temperature go up and down?

When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot.

What is the temperature of combustion?

Flames can vary in temperature from about 600°C to more than 3000°C. One factor is the energy released from the fuel’s combustion. Acetylene, for example, burns very hot because of the triple bond between the carbon atoms in it.

What is the main purpose of the cooling system?

The purpose of the engine’s cooling system is to remove excess heat from the engine, to keep the engine operating at its most efficient temperature, and to get the engine up to the correct temperature as soon as possible after starting.

How does temperature affect combustion?

This is because the increased air temperature accelerates the combustion rate and the ignition point of the coal flame is brought forward. Therefore, the volatiles will be rapidly ignited and burnt in the primary zone and consume a larger amount of oxygen.

Does combustion need high temperature?

Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Uncatalyzed combustion in air requires relatively high temperatures.

Is a thermostat really necessary?

The main purpose of an automobile’s thermostat is to regulate the operating temperature of the engine. So, if you drive without a thermostat, your engine will never reach its optimal operating temperature and your heater may blow cold air. If you live in a warm climate, this should not be a problem.

What is the normal operating temperature of the internal combustion engine?

How to avoid this – learn further. It is believed that the normal operating temperature of the internal combustion engine is from 87 ° to 105 °. For each engine, the operating temperature is determined by its own, at which it operates most stably.

What is the combustion temperature of an air fuel mixture?

The combustion of air-fuel mixture generates 2500 degree centigrade temperature in the engine cylinder. Cooling will remove the generated heat. To withstand such a high temperature we have to use very high melting point material for construction of the engine.

What is cooling in an engine?

Cooling is a necessary requirement of an I.C. Engine. In Automobile engineering, to get the work done from an internal combustion engine, we have to burn air-fuel mixture inside the cylinder. The combustion of air-fuel mixture generates 2500 degree centigrade temperature in the engine cylinder. Cooling will remove the generated heat.

How does an internal combustion engine work?

In an internal combustion engine (ICE), the fuel is ignited and burned inside the engine itself. The engine then converts some of the energy from the combustion into work. The engine consists of a fixed cylinder and a moving piston. The expanding combustion gases push the piston, which in turn rotates the crankshaft.