Get our free book on rainwater now - To Catch the Rain.

Difference between revisions of "Internal combustion engine"

From Appropedia
Jump to: navigation, search
(Improved text a lot)
(Tags: ANON EDIT. To be patrolled., n)
Line 1: Line 1:
A '''internal combustion engine''' is a type of [[thermal motor]] in which the a [[fuel]] is [[deflagration|combusted]] propelling a [[piston]]s, [[turbine blade]] or a [[propulsive nozzle|nozzle]].
+
A '''internal combustion engine''' is a type of [[thermal motor]] in which the a [[fuel]] is [[deflagration|combusted]] in [[piston]]s, [[turbine blade]] or trough a [[propulsive nozzle]].
  
 
==Types==
 
==Types==
Most popularly used internal combustion engines are Otto-type engines and these typically come in 2 types: petrol engines and diesel engines. These types typically differ in regards to their ignition. Petrol engines are ignited using a spark (by means of a magneto or electronically (latter type requiring a battery). Diesel engines typically operate by means of compression ignition. Contrary to popular belief, the 2 types are not restricted to run on either petrol (gasoline) or diesel. The diesel engine for example was initially designed to run on peanut oil. It is [[ICE fuel conversion|still capable of running on this biofuel]] (as well as many other biofuels) although some tweaking is generally necessary to circumvent some built-in limitations. Gasoline engines are typically a lot more restrictive in regards to the fuels they can run on.
+
Most popularly used internal combustion engines are "gasoline" or "Otto-type" engines (engines using the [http://en.wikipedia.org/wiki/Four-stroke_engine Otto-cycle]. Otto-type or spark-ignition engines use a spark (provided trough a spark plug, powered by a [[battery]] or [[magneto]]) to deflagrate the fuel. Batteries require electronics (ie printed circuit board), whereas magneto's use a magnet to immediatelly convert rotational energy to electricity. The latter are thus sturdier and preferred in most cases. Advanced systems using batteries can be more fuel-efficient though.
  
Besides Otto-engines (often of the line-engine type), several other types too exist. An overview is given at [[Comparison of IC motors]]
+
"Diesel engines" are a entirely different type of engine. Diesel engines use the [http://www.tpub.com/eqopbas/12535_files/image020.jpg Diesel-cycle]<ref>[http://visual.merriam-webster.com/images/transport-machinery/road-transport/types-engines/diesel-engine-cycle.jpg Diesel-cycle 2]</ref>. As clear in the cycle, the inlet only introduces pure air, and not a air/fuel mix. A additional, seperate, fuel inlet is also present, the outlet is the same as with Otto-engines. For their ignition, they rely on compression-ignition.
 +
 
 +
Note that contrary to popular belief, the 2 types are not restricted to run on either petrol (gasoline) or diesel. The diesel engine for example was initially designed to run on peanut oil (a type of [[biofuel]]. It is [[ICE fuel conversion|still capable of running on this biofuel]] (as well as many other biofuels) although some tweaking is generally necessary to circumvent some current limitations (since the initial Diesel-engine, Diesel engines produced today typically use direct or unit-direct injection rather than [http://en.wikipedia.org/wiki/Diesel_engine#Indirect_injection indirect injection]). Gasoline engines are typically a lot more restrictive in regards to the fuels they can run on (principally only ethanol, some gaseous biofuels (wood gas, oxyhydrogen, hydrogen, nitrous oxide, ...).
 +
 
 +
Besides Otto-engines (often of the line-engine type), several other Otto-types too exist. An overview is given at [[Comparison of IC motors]]
  
 
==References==
 
==References==

Revision as of 23:16, 19 August 2012

A internal combustion engine is a type of thermal motor in which the a fuel is combusted in pistons, turbine blade or trough a propulsive nozzle.

Types

Most popularly used internal combustion engines are "gasoline" or "Otto-type" engines (engines using the Otto-cycle. Otto-type or spark-ignition engines use a spark (provided trough a spark plug, powered by a battery or magneto) to deflagrate the fuel. Batteries require electronics (ie printed circuit board), whereas magneto's use a magnet to immediatelly convert rotational energy to electricity. The latter are thus sturdier and preferred in most cases. Advanced systems using batteries can be more fuel-efficient though.

"Diesel engines" are a entirely different type of engine. Diesel engines use the Diesel-cycle[1]. As clear in the cycle, the inlet only introduces pure air, and not a air/fuel mix. A additional, seperate, fuel inlet is also present, the outlet is the same as with Otto-engines. For their ignition, they rely on compression-ignition.

Note that contrary to popular belief, the 2 types are not restricted to run on either petrol (gasoline) or diesel. The diesel engine for example was initially designed to run on peanut oil (a type of biofuel. It is still capable of running on this biofuel (as well as many other biofuels) although some tweaking is generally necessary to circumvent some current limitations (since the initial Diesel-engine, Diesel engines produced today typically use direct or unit-direct injection rather than indirect injection). Gasoline engines are typically a lot more restrictive in regards to the fuels they can run on (principally only ethanol, some gaseous biofuels (wood gas, oxyhydrogen, hydrogen, nitrous oxide, ...).

Besides Otto-engines (often of the line-engine type), several other Otto-types too exist. An overview is given at Comparison of IC motors

References

See also