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External engines have a working fluid that is heated by the fuel. Internal combustion engines rely on the explosive power of the fuel within the engine to produce work. In internal combustion engines, the explosion forcefully pushes pistons or expels hot high-pressure gas out of the engine at great speeds.
How are internal combustion engines different from external combustion engines quizlet?
An internal combustion engine is an engine that generates heat energy from the combustion of a fuel inside the engine (ex. gasoline engine), whereas external combustion engines are engines that generate heat energy from the combustion of a fuel outside of the engine (ex. steam engine).
What is the main difference between internal combustion?
Comparison Chart I.C. Engine E.C. Engine Combustion of fuel takes place inside the cylinder Combustion of fuel takes place outside the cylinder Working fluid may be Petrol, Diesel & Various types of gases Working fluid is steam Require less space Require large space Capital cost is relatively low Capital cost is relatively high.
What is the main difference between steam engines and internal combustion engines?
Whereas steam engines first combust a fuel to heat water—a process that produces the steam that transmits the energy used to power the engine—internal combustion engines convert the heat energy of the fuel into mechanical power directly.
Do you think that internal combustion engines are better than external combustion engines Why or why not?
In IC engines, the combustion of fuel takes place inside, whereas in EC engines the fuel combustion takes place outside the cylinder. The advantages of IC engine are higher BTE, more horsepower developed per unit weight and low cost compared to that of external combustion engine.
How an internal combustion engine works quizlet?
the spark plug ignites the air fuel mixture, causing it to combust which forces the piston into a second downward stroke. as the piston begins it second upward stroke, the exhaust valve opens and the burned mixture is forced out of the combustion chamber through the exhaust valves.
Which is external combustion engine?
Definition of external combustion engine : a heat engine (such as a steam engine) that derives its heat from fuel consumed outside the cylinder.
How does a external combustion engine work?
An external combustion engine is a heat engine where an (internal) working fluid is heated by combustion of an external source, through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine produces motion and usable work.
What are the different type of internal combustion engine and their processes?
There are two kinds of internal combustion engines currently in production: the spark ignition gasoline engine and the compression ignition diesel engine. Most of these are four-stroke cycle engines, meaning four piston strokes are needed to complete a cycle.
Which is more efficient internal or external combustion engine?
The internal combustion engine has an efficiency of about 35-45 %. As compared to the external combustion engine has an efficiency of about 15-25 %. The Fuel cost of the internal combustion engine is relatively high.
How does the external combustion engine ECE works?
An external combustion engine burns fuel externally, or outside the engine. An external combustion engine burns fuel to heat water and produce steam. The steam is under pressure and is used to push a piston back and forth inside a cylinder. As the piston moves back and forth, it moves a piston rod, which can do work.
What are the two main types of external combustion engine?
There are two main families of external combustion engines; steam engines which rely on expanding steam (or occasionally some other vapour) to drive a mechanism; or Stirling engines which use hot air (or some other hot gas).
What is difference between ice and ECE?
The main difference is where the combustion takes places. In IC engines fuel combustion takes place inside the cylinder, whereas in EC engines it takes place outside the engine cylinder.
What are the advantages of internal combustion engine?
Internal combustion engines have several advantages over external combustion engines. Because the fuel burns directly in the cylinder of the internal combustion engine, the heat loss is smaller, the thermal efficiency is higher, and fuel consumption is lower.
What are the disadvantages of external combustion engine?
De Laval’s steam turbine, used in ships and today’s thermal power plants, is also external combustion: the steam is produced somewhere else, in a boiler. Disadvantages of external combustion engine are: 1. Space requirement are larger vs comparable internal combustion engines.
What kind of engine is an internal combustion engine quizlet?
an internal combustion engine in which the piston completes four separate strokes which constitute a single thermodynamic cycle. The four strokes are: intake, compression, power, and exhaust.
What is the difference between a steam engine and a Stirling engine?
In 1816, Robert Stirling created a closed-cycle air engine which worked by heating one side of the engine while the other remained cool. However, unlike a steam engine, it’s a closed-loop system so you don’t need to top up the water (or any other fluid) – just apply heat and you’re ready to go.
Where in the engine does combustion occur quizlet?
Just before the piston reaches the top of the cylinder, ignition occurs and combustion starts. The pressure of expanding gases forces the piston downward on its power stroke.
What are the external parts of engine?
Glossary Of Engine External Parts Air Filter. Air Filter Housing. Alternator. Auxiliary Drive Belt. Camshaft Synchronizer. Carburetor. Compressor. Direct Fuel Injection.
What are the advantages of external combustion engine?
External combustion engines are discussed as possible alternatives to the internal combustion engine for vehicle propulsion. Potential advantages are low levels of exhaust pollution, quiet operation, high starting torque, and possible lower costs during a vehicle lifetime.
Why the engine is called internal combustion engine?
They are named as such because the fuel is ignited in order to do work inside the engine. The same fuel and air mixture is then emitted as exhaust. This can be done using a piston (called a reciprocating engine), or with a turbine.
What do internal combustion engines do?
internal-combustion engine, any of a group of devices in which the reactants of combustion (oxidizer and fuel) and the products of combustion serve as the working fluids of the engine. Such an engine gains its energy from heat released during the combustion of the nonreacted working fluids, the oxidizer-fuel mixture.
What are the characteristics of internal combustion engines?
Basic design and performance parameters in internal combustion engines include compression ratio, swept volume, clearance volume, power output, indicated power, thermal efficiency, indicated mean effective pressure, brake mean effective pressure, specific fuel consumption, and more.
