Cylinder - Revision history

Red marquis: /* Internal combustion engines */

2010-03-02T04:42:23Z

Internal combustion engines

← Older revision		Revision as of 04:42, 2 March 2010
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	[[Category:Engine technology]]		[[Category:Engine technology]]
	[[Category:~~Engine~~]]		[[Category:Engines]]

Red marquis at 04:38, 2 March 2010

2010-03-02T04:38:44Z

@@ Line 1: / Line 1: @@
 [[Image:cylinder.png|frame|right|Cylinder with piston in a steam engine]]
-A '''cylinder''' in the central working part of an [[internal combustion engine]], the space in which a [[piston]] travels.  Multiple cylinders are commonly arranged side by side in a bank, or '''engine block''', which is typically cast from aluminum or iron before precision features are machined into it. Ceramics have also been tried, so far unsuccessfully. The cylinders may then be lined with sleeves of some harder metal, or given a wear-resistant coating such as Nikasil. A cylinder's displacement, or '''swept volume''', is its cross-sectional area (the square of half the '''bore''' times pi) times the distance the piston travels within the cylinder (the '''stroke'''). The engine '''displacement''' is the swept volume of one cylinder times the number of cylinders in the engine.
+A piston is seated inside each cylinder by several metal [[piston ring]]s which fit around its outside surface in machined grooves; typically two for compressional sealing and one to seal the [[motor oil|oil]] (In steam engines only compressional sealing rings are used of which there can be from two to five on the piston). A fine vapour of oil is usually maintained suspended in the steam working in the cylinder. The rings make near contact with the hard walls of the liner, riding on a thin layer of lubricating oil which is essential to keep the engine from <font color=maroon>''seizing up''</font>. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The <font color=maroon>''breaking in''</font> or <font color=maroon>''running in''</font> of an engine is a process whereby tiny irregularities in the metals are encouraged to form congruent grooves. An <font color=maroon>''engine job''</font> or <font color=maroon>''rebore''</font> is a process in which the cylinders are machined out to a slightly larger diameter, and new sleeves and piston rings installed.
-A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.
+==Heat engines==
 [[Category:Engine technology]]

Red marquis at 11:07, 29 October 2008

2008-10-29T11:07:24Z

← Older revision		Revision as of 11:07, 29 October 2008
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	[[Category:~~Engines~~]]		[[Category:Engine technology]]

Red marquis at 10:57, 29 October 2008

2008-10-29T10:57:23Z

← Older revision		Revision as of 10:57, 29 October 2008
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	A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.		A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.

	~~[[Category:Technology]]~~
	[[Category:Engines]]		[[Category:Engines]]

Red marquis at 10:56, 29 October 2008

2008-10-29T10:56:37Z

← Older revision		Revision as of 10:56, 29 October 2008
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	[[Category:Technology]]		[[Category:Technology]]
			[[Category:Engines]]

MQuan at 21:07, 20 November 2006

2006-11-20T21:07:40Z

← Older revision		Revision as of 21:07, 20 November 2006
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	A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.		A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.

			[[Category:Technology]]

Mckinneym at 14:42, 17 July 2006

2006-07-17T14:42:20Z

← Older revision		Revision as of 14:42, 17 July 2006
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	[[Image:cylinder.png\|frame\|right\|Cylinder with piston in a steam engine]]		[[Image:cylinder.png\|frame\|right\|Cylinder with piston in a steam engine]]

	A '''cylinder''' in the central working part of an [[internal combustion engine~~\|internal~~]], the space in which a [[piston]] travels. Multiple cylinders are commonly arranged side by side in a bank, or '''engine block''', which is typically cast from aluminum or iron before precision features are machined into it. Ceramics have also been tried, so far unsuccessfully. The cylinders may then be lined with sleeves of some harder metal, or given a wear-resistant coating such as Nikasil. A cylinder's displacement, or '''swept volume''', is its cross-sectional area (the square of half the '''bore''' times pi) times the distance the piston travels within the cylinder (the '''stroke'''). The engine '''displacement''' is the swept volume of one cylinder times the number of cylinders in the engine.		A '''cylinder''' in the central working part of an [[internal combustion engine]], the space in which a [[piston]] travels. Multiple cylinders are commonly arranged side by side in a bank, or '''engine block''', which is typically cast from aluminum or iron before precision features are machined into it. Ceramics have also been tried, so far unsuccessfully. The cylinders may then be lined with sleeves of some harder metal, or given a wear-resistant coating such as Nikasil. A cylinder's displacement, or '''swept volume''', is its cross-sectional area (the square of half the '''bore''' times pi) times the distance the piston travels within the cylinder (the '''stroke'''). The engine '''displacement''' is the swept volume of one cylinder times the number of cylinders in the engine.

	A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.		A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.

Mckinneym at 14:40, 17 July 2006

2006-07-17T14:40:20Z

← Older revision		Revision as of 14:40, 17 July 2006
Line 1:		Line 1:
	[[Image:cylinder.png\|frame\|right\|Cylinder with piston in a steam engine]]		[[Image:cylinder.png\|frame\|right\|Cylinder with piston in a steam engine]]

	A '''cylinder''' in the central working part of an [[internal combustion engine\|internal~~]] or [[external combustion engine~~]], the space in which a [[piston]] travels. Multiple cylinders are commonly arranged side by side in a bank, or ''[[engine block]]'', which is typically ~~[[casting\|~~cast]] from [[aluminum]] or ~~[[cast~~ iron~~\|iron]]~~ before precision features are machined into it. ~~([[Ceramic]]s~~ have also been tried, so far unsuccessfully.) The cylinders may then be lined with sleeves of some harder [[metal]], or given a wear-resistant coating such as [[Nikasil]]. A cylinder's displacement, or ''swept [[volume]]'', is its cross-sectional [[area]] (the [[square]] of half the ''[[bore]]'' times [[pi]] ) times the distance the piston travels within the cylinder (the ''[[stroke]]''). The engine ''~~[[engine~~ displacement~~\|displacement]]~~'' is the swept volume of one cylinder times the number of cylinders in the engine.		A '''cylinder''' in the central working part of an [[internal combustion engine\|internal]], the space in which a [[piston]] travels. Multiple cylinders are commonly arranged side by side in a bank, or '''engine block''', which is typically cast from aluminum or iron before precision features are machined into it. Ceramics have also been tried, so far unsuccessfully. The cylinders may then be lined with sleeves of some harder metal, or given a wear-resistant coating such as Nikasil. A cylinder's displacement, or '''swept volume''', is its cross-sectional area (the square of half the '''bore''' times pi) times the distance the piston travels within the cylinder (the '''stroke'''). The engine '''displacement''' is the swept volume of one cylinder times the number of cylinders in the engine.

	A piston is seated inside each cylinder by several metal [[piston ~~ring]]s~~ which fit around its outside surface in machined grooves; typically two for ~~[[physical~~ compression~~\|compressional]]~~ sealing and one to seal the [[motor oil~~\|oil]]~~. They are made of [[spring steel]] and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from ~~<font color=maroon>''~~seizing up~~''</font>~~. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The ~~<font color=maroon>''~~breaking in~~''</font>~~ of an engine is a process whereby tiny irregularities in the metals form congruent grooves~~. An <font color=maroon>''engine job''</font> is a process in which the cylinders are machined out to a slightly larger diameter, and new sleeves and piston rings are installed~~.		A [[piston]] is seated inside each cylinder by several metal piston rings which fit around its outside surface in machined grooves; typically two for compression sealing and one to seal the motor oil. They are made of spring steel and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from seizing up. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The breaking in of an engine is a process whereby tiny irregularities in the metals form congruent grooves.

Mckinneym at 14:32, 17 July 2006

2006-07-17T14:32:06Z

New page

[[Image:cylinder.png|frame|right|Cylinder with piston in a steam engine]]

A '''cylinder''' in the central working part of an [[internal combustion engine|internal]] or [[external combustion engine]], the space in which a [[piston]] travels. Multiple cylinders are commonly arranged side by side in a bank, or ''[[engine block]]'', which is typically [[casting|cast]] from [[aluminum]] or [[cast iron|iron]] before precision features are machined into it. ([[Ceramic]]s have also been tried, so far unsuccessfully.) The cylinders may then be lined with sleeves of some harder [[metal]], or given a wear-resistant coating such as [[Nikasil]]. A cylinder's displacement, or ''swept [[volume]]'', is its cross-sectional [[area]] (the [[square]] of half the ''[[bore]]'' times [[pi]] ) times the distance the piston travels within the cylinder (the ''[[stroke]]''). The engine ''[[engine displacement|displacement]]'' is the swept volume of one cylinder times the number of cylinders in the engine.

A piston is seated inside each cylinder by several metal [[piston ring]]s which fit around its outside surface in machined grooves; typically two for [[physical compression|compressional]] sealing and one to seal the [[motor oil|oil]]. They are made of [[spring steel]] and make near contact with the hard walls of the sleeve, riding on a thin layer of lubricating oil which is essential to keep the engine from ''seizing up''. This contact, and the resulting wear, explains the need for the hard lining on the inner surface of the cylinder. The ''breaking in'' of an engine is a process whereby tiny irregularities in the metals form congruent grooves. An ''engine job'' is a process in which the cylinders are machined out to a slightly larger diameter, and new sleeves and piston rings are installed.