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Home > Technical > Inlet port deactivation |
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Disco_Mikey Member Since: 08 Apr 2012 Location: Dundee, Scotland Posts: 4395 |
No T/SDV6 had port deactivation, it was only used in the Jag variants |
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Sun Feb 17 2019 3:11pm |
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pre7amble Member Since: 01 May 2018 Location: Norfolk Posts: 13 |
Hi, thanks for that, don't know what it is but knowing I don't have it allows me to read the correct wiring diagram.
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Sun Feb 17 2019 4:50pm |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 8978 |
Port deactivation is a way of improving engine breathing. You set up your pair of inlet ports in each cylinder so that one gives good swirl at low revs and the other gives cylinder filling at higher revs. You then deactivate the high filling port at low revs using a valve in the inlet tract.
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Sun Feb 17 2019 6:06pm |
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pre7amble Member Since: 01 May 2018 Location: Norfolk Posts: 13 |
Hi, thank you for that simple and clear explanation. It also explains why my manual shows circuits both with and without.
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Sun Feb 17 2019 9:02pm |
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