Tech:Engine/A Series/TVIS - Revision history

MedicineMan at 12:58, 27 June 2007

2007-06-27T12:58:54Z

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	''Article by Medicine_Man''		''Article by Medicine_Man''

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			Back to [http://www.rollaclub.com/faq/index.php?title=Main_Page#A_Series A Series Engines]

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MedicineMan at 11:52, 10 May 2006

2006-05-10T11:52:57Z

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	''Article by Medicine_Man''		''Article by Medicine_Man''

MedicineMan at 12:09, 11 October 2005

2005-10-11T12:09:26Z

← Older revision		Revision as of 12:09, 11 October 2005
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	[[Image:Medicine Man20040713202117pslfile1.jpg]]		[[Image:Medicine Man20040713202117pslfile1.jpg]]

			''Article by Medicine_Man''

MedicineMan at 03:22, 5 August 2005

2005-08-05T03:22:25Z

← Older revision		Revision as of 03:22, 5 August 2005
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	TVIS - '''''(Toyota Variable Intake System)''''' is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers the VSV (Vacuum Switching Valve) to open up, which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.		TVIS - '''''(Toyota Variable Intake System)''''' is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers the VSV (Vacuum Switching Valve) to open up, which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.


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			TVIS Plate

			[[Image:Medicine Man20040713203517pslfile1.jpg]]

			TVIS VSV (Vacuum Switching Valve)

			[[Image:Medicine Man20040713203828pslfile1.jpg]]

			TVIS Plate Against Head

			[[Image:Medicine Man20050101222437pslfile1.jpg]]

			Intake Runners

			[[Image:Medicine Man20040713202117pslfile1.jpg]]

MedicineMan at 03:18, 5 August 2005

2005-08-05T03:18:19Z

← Older revision		Revision as of 03:18, 5 August 2005
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	What is TVIS?		What is TVIS?

	TVIS - '''''(Toyota Variable Intake System)''''' is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers ~~a vacuum switching valve~~ to open up which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.		TVIS - '''''(Toyota Variable Intake System)''''' is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers the VSV (Vacuum Switching Valve) to open up, which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.

MedicineMan at 03:00, 5 August 2005

2005-08-05T03:00:00Z

← Older revision		Revision as of 03:00, 5 August 2005
Line 1:		Line 1:
	What is TVIS?		What is TVIS?

	TVIS - Toyota Variable Intake System is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers a vacuum switching valve to open up which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.		TVIS - '''''(Toyota Variable Intake System)''''' is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers a vacuum switching valve to open up which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.

MedicineMan at 02:58, 5 August 2005

2005-08-05T02:58:55Z

New page

What is TVIS?

TVIS - Toyota Variable Intake System is a design to help the engine keep maximum torque throughout the rev range. The Engine has a plate (referred to as a "TVIS Plate") that sits in-between the intake manifold and the head. The TVIS plate has 2 runners for each cylinder, the theory behind it is that only one intake runner per cylinder is open at low revs (this is to keep the intake velocity up). Somwhere around 4400RPM - 4500RPM onwards the ecu triggers a vacuum switching valve to open up which in turn utilises the engine vacuum to open the other intake runners in the TVIS plate. This way the engine is getting more air as its under a greater load.