RPM - Revision history

Jmdonev: 1 revision imported

2020-01-31T05:10:14Z

1 revision imported

← Older revision	Revision as of 05:10, 31 January 2020
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Energy>Jmdonev at 19:51, 30 January 2020

2020-01-30T19:51:25Z

← Older revision		Revision as of 19:51, 30 January 2020
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	[[Category:Done ~~2015~~-09-05]]		[[Category:Done 2020-01-31]]
	[[File:4StrokeEngine.gif\|framed\|4-stroke [[internal combustion engine]]. Figure 1. An internal combustion engine has a number of RPM, based on the number of times that it goes through a 'cycle'. It goes through a 'cycle' when it does all four of the following processes. 1:fuel injection, 2:ignition, 3:expansion([[work]] is done), 4:exhaust<ref>Zephyris (Richard Wheeler). (accessed 2015, Jan. 4). ''4StrokeEngine Ortho 3D Small.gif'' [Online]. Available: http://commons.wikimedia.org/wiki/File%3A4StrokeEngine_Ortho_3D_Small.gif</ref> In this picture the engine is going at 10 RPM, which is much slower than most engines.]]		[[File:4StrokeEngine.gif\|framed\|4-stroke [[internal combustion engine]]. Figure 1. An internal combustion engine has a number of RPM, based on the number of times that it goes through a 'cycle'. It goes through a 'cycle' when it does all four of the following processes. 1:fuel injection, 2:ignition, 3:expansion([[work]] is done), 4:exhaust<ref>Zephyris (Richard Wheeler). (accessed 2015, Jan. 4). ''4StrokeEngine Ortho 3D Small.gif'' [Online]. Available: http://commons.wikimedia.org/wiki/File%3A4StrokeEngine_Ortho_3D_Small.gif</ref> In this picture the engine is going at 10 RPM, which is much slower than most engines.]]
	<onlyinclude>'''RPM''' stands for '''rotations per minute''' and is also abbreviated '''rpm'''. This is a unit which describes how many times an object completes a cycle in a minute.</onlyinclude> This cycle can be anything, the [[piston]]s in a [[internal combustion engine]] (see figure 1) repeating their motion or a [[wind turbine]] spinning once all the way around.		<onlyinclude>'''RPM''' stands for '''rotations per minute''' and is also abbreviated '''rpm'''. This is a unit which describes how many times an object completes a cycle in a minute.</onlyinclude> This cycle can be anything, the [[piston]]s in a [[internal combustion engine]] (see figure 1) repeating their motion or a [[wind turbine]] spinning once all the way around.
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	Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz		Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz

			==For Further Reading==
			*[[Crankshaft]]
			*[[Gear]]
			*[[Internal combustion engine]]
			*[[Turbine]]
			*Or explore a [[Special:Random\|random page]]
	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-09-03T18:21:55Z

1 revision imported

← Older revision	Revision as of 18:21, 3 September 2015
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Jmdonev at 21:00, 27 August 2015

2015-08-27T21:00:03Z

← Older revision		Revision as of 21:00, 27 August 2015
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	[[Category:Done 2015-01-15 ]]		[[Category:Done 2015-09-05]]
	[[File:4StrokeEngine.gif\|framed\|4-stroke [[internal combustion engine]]. Figure 1. An internal combustion engine has a number of RPM, based on the number of times that it goes through a 'cycle'. It goes through a 'cycle' when it does all four of the following processes. 1:fuel injection, 2:ignition, 3:expansion([[work]] is done), 4:exhaust<ref>Zephyris (Richard Wheeler). (accessed 2015, Jan. 4). ''4StrokeEngine Ortho 3D Small.gif'' [Online]. Available: http://commons.wikimedia.org/wiki/File%3A4StrokeEngine_Ortho_3D_Small.gif</ref> In this picture the engine is going at 10 RPM, which is much slower than most engines.]]		[[File:4StrokeEngine.gif\|framed\|4-stroke [[internal combustion engine]]. Figure 1. An internal combustion engine has a number of RPM, based on the number of times that it goes through a 'cycle'. It goes through a 'cycle' when it does all four of the following processes. 1:fuel injection, 2:ignition, 3:expansion([[work]] is done), 4:exhaust<ref>Zephyris (Richard Wheeler). (accessed 2015, Jan. 4). ''4StrokeEngine Ortho 3D Small.gif'' [Online]. Available: http://commons.wikimedia.org/wiki/File%3A4StrokeEngine_Ortho_3D_Small.gif</ref> In this picture the engine is going at 10 RPM, which is much slower than most engines.]]
	<onlyinclude>'''RPM''' stands for '''rotations per minute''' and is also abbreviated '''rpm'''. This is a unit which describes how many times an object completes a cycle in a minute.</onlyinclude> This cycle can be anything, the [[piston]]s in a [[internal combustion engine]] (see figure 1) repeating their motion or a [[wind turbine]] spinning once all the way around.		<onlyinclude>'''RPM''' stands for '''rotations per minute''' and is also abbreviated '''rpm'''. This is a unit which describes how many times an object completes a cycle in a minute.</onlyinclude> This cycle can be anything, the [[piston]]s in a [[internal combustion engine]] (see figure 1) repeating their motion or a [[wind turbine]] spinning once all the way around.
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	Most wind turbines try to spin at about 15 RPM, and [[gear]]ing is used to keep it at that speed. Gearing is also used with the [[crankshaft]] of a vehicle in order to keep the RPM reading in a range (usually 2000-3000 RPM). Some racing motorcycles will reach more than 20,000 RPM.		Most wind turbines try to spin at about 15 RPM, and [[gear]]ing is used to keep it at that speed. Gearing is also used with the [[crankshaft]] of a vehicle in order to keep the RPM reading in a range (usually 2000-3000 RPM). Some racing motorcycles will reach more than 20,000 RPM.

	Rotations per minute is an especially important topic when discussing generators, as generators spinning at a higher RPM produce more [[power]] for the same amount of [[energy]] in each cycle. It's generally convenient to make the RPMs of an [[electric generator]] match the [[frequency]] of the [[~~electricity~~ grid]] (or some multiple of that frequency), although grid frequency is usually measured in [[Hertz]] (Hz), rather than RPM.		Rotations per minute is an especially important topic when discussing generators, as generators spinning at a higher RPM produce more [[power]] for the same amount of [[energy]] in each cycle. It's generally convenient to make the RPMs of an [[electric generator]] match the [[frequency]] of the [[electrical grid]] (or some multiple of that frequency), although grid frequency is usually measured in [[Hertz]] (Hz), rather than RPM.

	Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz		Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz

J.williams: 1 revision imported

2015-08-26T21:31:34Z

1 revision imported

← Older revision	Revision as of 21:31, 26 August 2015
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J.williams at 16:58, 12 August 2015

2015-08-12T16:58:46Z

New page

[[Category:Done 2015-01-15 ]]
[[File:4StrokeEngine.gif|framed|4-stroke [[internal combustion engine]]. Figure 1. An internal combustion engine has a number of RPM, based on the number of times that it goes through a 'cycle'. It goes through a 'cycle' when it does all four of the following processes. 1:fuel injection, 2:ignition, 3:expansion([[work]] is done), 4:exhaust<ref>Zephyris (Richard Wheeler). (accessed 2015, Jan. 4). ''4StrokeEngine Ortho 3D Small.gif'' [Online]. Available: http://commons.wikimedia.org/wiki/File%3A4StrokeEngine_Ortho_3D_Small.gif</ref> In this picture the engine is going at 10 RPM, which is much slower than most engines.]]
<onlyinclude>'''RPM''' stands for '''rotations per minute''' and is also abbreviated '''rpm'''. This is a unit which describes how many times an object completes a cycle in a minute.</onlyinclude> This cycle can be anything, the [[piston]]s in a [[internal combustion engine]] (see figure 1) repeating their motion or a [[wind turbine]] spinning once all the way around.

The reading on a [[tachometer]] in a car gives how many RPM (usually 1000s of RPM) a car's crankshaft is turning (this is different from the number of rotations per minute that the wheels are doing, which is why it still reads ~1000 RPM while sitting at a stoplight).

Most wind turbines try to spin at about 15 RPM, and [[gear]]ing is used to keep it at that speed. Gearing is also used with the [[crankshaft]] of a vehicle in order to keep the RPM reading in a range (usually 2000-3000 RPM). Some racing motorcycles will reach more than 20,000 RPM.

Rotations per minute is an especially important topic when discussing generators, as generators spinning at a higher RPM produce more [[power]] for the same amount of [[energy]] in each cycle. It's generally convenient to make the RPMs of an [[electric generator]] match the [[frequency]] of the [[electricity grid]] (or some multiple of that frequency), although grid frequency is usually measured in [[Hertz]] (Hz), rather than RPM.

Two useful conversions: 1 RPM = 0.0167 Hz and 60 RPM = 1 Hz
==References==
{{reflist}}
[[Category:Uploaded]]