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No blow backs in closed loop systems?
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CarGuru > Open discussion > No blow backs in closed loop systems? 19 April 2005 02:08:06
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No blow backs in closed loop systems?

Bw 14 April 2005 21:23:09
 Is it true you dont get blow backs in closed loop LPG conversions?
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Stewart Hargrave 14 April 2005 21:40:14 [ permanent link ]
 On Thu, 14 Apr 2005 18:23:09 +0100, BW <BR> wrote:
Is it true you dont get blow backs in closed loop LPG conversions?

Not necessarily. Sequential injection will be a closed loop system,
and about as blowback free as is possible to get. But you can have
simpler systems that are closed loop too.

The important thing is to fill as little on the inlet tract as
possible with an explosive mixture. Injectors placed next to the inlet
valves, that only open when the valve is open, achieve this well. But
a simple mixer must be placed upstream of the throttle valve (I have
seen one attached to the airbox outlet, several feet from the inlet
valves), and so much more of the tract is filled with mixture. The
'closed loop' is a way of accurately controlling the ratio of the
mixture.

IME, in the absence of sequential injection, the most important thing
in reducing the occurrence of blowbacks is to make sure all the HT
components are in first class order.


--

TSH

For email, replace 'SpamOnlyToHere' with my initials

LPG info. page: www.hargrave.me.uk/­lpg
Add comment
Hugh 19 April 2005 02:08:06 [ permanent link ]
 In message <hp8t51lp935mdm07qi­9a7j320ljcmqum40@4ax­.com>, BW
<BR@?.?.invalid> writes>Is it true you dont get blow backs in closed loop LPG conversions?
No
--
hugh
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CarGuru > Open discussion > No blow backs in closed loop systems? 19 April 2005 02:08:06
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