Fuel Stratified Injection - Revision history

Red marquis: /* Operation */

2010-05-20T15:00:02Z

Operation

← Older revision		Revision as of 15:00, 20 May 2010
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	VW/Audi has since added [[Turbocharger\|turbocharging]] in conjunction with the FSI system, giving it the moniker '''TFSI'''.		VW/Audi has since added [[Turbocharger\|turbocharging]] in conjunction with the FSI system, giving it the moniker '''TFSI'''.

	==~~Operation~~==		==Overview==

	As is the case with all direct-injection systems, FSI increases the engine's power output while reducing fuel consumption simultaneously by as much as 15 percent. This is in large part to the stratified charge principle at part load. In this operating mode, the engine only requires a fuel-air mixture capable of immediate [[ignition]] in the area around the [[spark plug]]. The remainder of the [[combustion chamber]] is filled with a leaner mixture, one with a considerable degree of excess air.		As is the case with all direct-injection systems, FSI increases the engine's power output while reducing fuel consumption simultaneously by as much as 15 percent. This is in large part to the stratified charge principle at part load. In this operating mode, the engine only requires a fuel-air mixture capable of immediate [[ignition]] in the area around the [[spark plug]]. The remainder of the [[combustion chamber]] is filled with a leaner mixture, one with a considerable degree of excess air.

Red marquis at 14:54, 20 May 2010

2010-05-20T14:54:53Z

← Older revision		Revision as of 14:54, 20 May 2010
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	[[Image:Fsistratifiedaudi.jpg\|frame\|right]]		[[Image:Fsistratifiedaudi.jpg\|frame\|right]]
	'''Fuel Stratified Injection''' ~~(aka~~ '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].		'''Fuel Stratified Injection''' or '''FSI''' is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].

	It was first introduced in 2000 when VW introduced the 1.4 litre ''direct-injected'' inline-four unit in the [[Volkswagen Lupo]] city car. The system was adapted from Audi's [[24 Hours of Le Mans\|Le Mans]] [[Le Mans Prototype\|prototype race car]] [[Audi R8 (race car)\|R8]] and has since proliferated throughout the Volkswagen Group's petrol engine range.		It was first introduced in 2000 when VW introduced the 1.4 litre ''direct-injected'' inline-four unit in the [[Volkswagen Lupo]] city car. The system was adapted from Audi's [[24 Hours of Le Mans\|Le Mans]] [[Le Mans Prototype\|prototype race car]] [[Audi R8 (race car)\|R8]] and has since proliferated throughout the Volkswagen Group's petrol engine range.

Red marquis at 14:54, 20 May 2010

2010-05-20T14:54:19Z

← Older revision		Revision as of 14:54, 20 May 2010
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	It was first introduced in 2000 when VW introduced the 1.4 litre ''direct-injected'' inline-four unit in the [[Volkswagen Lupo]] city car. The system was adapted from Audi's [[24 Hours of Le Mans\|Le Mans]] [[Le Mans Prototype\|prototype race car]] [[Audi R8 (race car)\|R8]] and has since proliferated throughout the Volkswagen Group's petrol engine range.		It was first introduced in 2000 when VW introduced the 1.4 litre ''direct-injected'' inline-four unit in the [[Volkswagen Lupo]] city car. The system was adapted from Audi's [[24 Hours of Le Mans\|Le Mans]] [[Le Mans Prototype\|prototype race car]] [[Audi R8 (race car)\|R8]] and has since proliferated throughout the Volkswagen Group's petrol engine range.

			VW/Audi has since added [[Turbocharger\|turbocharging]] in conjunction with the FSI system, giving it the moniker '''TFSI'''.

	==Operation==		==Operation==

Red marquis: /* Photos */

2010-05-20T14:38:25Z

Photos

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	<gallery>		<gallery>
	Image:Fsiaudi.jpg\|An illustration depicting the difference in operation of a homogenous fuel injection system and VW/Audi's stratified-charge system		Image:Fsiaudi.jpg\|An illustration depicting the difference in operation of a homogenous fuel injection system and VW/Audi's stratified-charge system
			Image:A4fsi013.jpg\|The FSI's exhaust gas recirculation system
			Image:A4fsi011.jpg\|Exhaust gas treatment system
			Image:A4fsi010.jpg\|Audi's 2.0 litre FSI [[Inline-4]] engine
	</gallery>		</gallery>

Red marquis at 14:34, 20 May 2010

2010-05-20T14:34:27Z

← Older revision		Revision as of 14:34, 20 May 2010
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	[[Image:Fsistratifiedaudi.jpg\|right]]		[[Image:Fsistratifiedaudi.jpg\|frame\|right]]
	'''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].		'''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].

Red marquis at 14:33, 20 May 2010

2010-05-20T14:33:49Z

@@ Line 1: / Line 1: @@
-[[Image:Fsiaudi.jpg|right]]
+[[Image:Fsistratifiedaudi.jpg|right]]
 '''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].
@@ Line 19: / Line 19: @@
 *An external exhaust gas recirculation system.
 *A further development of the exhaust emission treatment system, with a NOx storage-type catalytic converter and NOx sensor.
 ==See Also==
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 {{Volkswagen}}
 {{Audi}}

Red marquis at 14:28, 20 May 2010

2010-05-20T14:28:31Z

← Older revision		Revision as of 14:28, 20 May 2010
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	~~{{stub}}~~		[[Image:Fsiaudi.jpg\|right]]
	'''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].		'''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].

Red marquis at 14:16, 20 May 2010

2010-05-20T14:16:20Z

@@ Line 1: / Line 1: @@
 {{stub}}
-{{cleanup}}
+'''Fuel Stratified Injection''' (aka '''FSI''') is a proprietary direct fuel injection system developed and used by [[Volkswagen]] AG, as well as its luxury subsidiary [[Audi]].
-Also known as FSI injection, common with audi and VW engines.
+It was first introduced in 2000 when VW introduced the 1.4 litre ''direct-injected'' inline-four unit in the [[Volkswagen Lupo]] city car. The system was adapted from Audi's [[24 Hours of Le Mans|Le Mans]] [[Le Mans Prototype|prototype race car]] [[Audi R8 (race car)|R8]] and has since proliferated throughout the Volkswagen Group's petrol engine range.
-IAA 2001: FSI - The Direct-Injection Petrol Engine
+As is the case with all direct-injection systems, FSI increases the engine's power output while reducing fuel consumption simultaneously by as much as 15 percent. This is in large part to the stratified charge principle at part load. In this operating mode, the engine only requires a fuel-air mixture capable of immediate [[ignition]] in the area around the [[spark plug]]. The remainder of the [[combustion chamber]] is filled with a leaner mixture, one with a considerable degree of excess air.
-Yet fuel consumption is simultaneously as much as 15 percent lower.
+Fuel is injected on the engine's compression stroke and is picked up by the movement of the air that has been drawn into the combustion chamber. This movement is imparted to the air by a movable flap in the intake port and by the special shape of the piston crown. This effect is known as "tumble". The injector, which is supplied by a single-piston pump and common rail fuel line, is in the side of the cylinder head, and controls the injection time to within thousandths of a second, at injection pressures of up to 110 bar.
 As a result of this, the engine can be run without the incoming mixture flow being throttled. The direct-injection engine also benefits from reduced heat losses, because the layer of air around the 'cloud' of ignitable mixture isolates the latter from the cylinder and cylinder head.
-One may well ask why this principle had not been fully exploited long ago if it brings such fundamental advantages. After all, the first direct injection petrol engines were built back in the nineteen-fifties, and other manufacturers have made use of similar techniques more recently. However, they were unable to reap the full benefit of this mixture supply technique because stratified-charge operation was only possible over a much smaller zone of the engine's operating range.
+Other key components of the system include:
-Terms of Use | Copyright © 1996-2007 by AudiWorld. All rights reserved.
+{{Volkswagen}}

81.196.156.106 at 12:00, 20 May 2010

2010-05-20T12:00:47Z

← Older revision		Revision as of 12:00, 20 May 2010
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	In the stratified-charge operating mode, fuel is injected on the engine's compression stroke and is picked up by the movement of the air that has been drawn into the combustion chamber. This movement is imparted to the air by a movable flap in the intake port and by the special shape of the piston crown. This effect is known as "tumble".		In the stratified-charge operating mode, fuel is injected on the engine's compression stroke and is picked up by the movement of the air that has been drawn into the combustion chamber. This movement is imparted to the air by a movable flap in the intake port and by the special shape of the piston crown. This effect is known as "tumble".

	~~Pages: [1] [2]~~

81.196.156.106 at 11:59, 20 May 2010

2010-05-20T11:59:58Z

← Older revision		Revision as of 11:59, 20 May 2010
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	{{cleanup}}		{{cleanup}}

	~~also~~ known as FSI injection, common with audi and VW engines.		Also known as FSI injection, common with audi and VW engines.

	IAA 2001: FSI - The Direct-Injection Petrol Engine		IAA 2001: FSI - The Direct-Injection Petrol Engine