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Match: 
#4 (Localized search active near current match!)
Message: 
#17364
Subject: 
Separate start battery for Plasma III
Date: 
Mar 24, 2004
From: 
"Mark Neubauer" <mark.neubauer(at)genmar.com>



Several months ago, one member mentioned that the LSE unit has a rather irritating
quality that when the bus voltage drops to some unspecified (low) amount,
as during an extended engine cranking event, the brain gets "scrambled" and causes
a timing mis-fire. The result was that spark was delivered BEFORE top-dead-center,
causing the engine to try to spin backwards or cause a failure of the
starter pinion or ring gear due to the high forces involved.

My thoughts on this topic have been this: What about using a second, small battery
(around 5 Amp-hr for example) on board and electrically isolate this battery
just prior to engine crank with a separate switch? The purpose of this battery
is to provide clean, isolated power to the LSE units during the crank event
without its voltage being "dragged" down by the starter. In essence, this would
require that an additional switch would be placed in the "start" position
and used to feed LSE power exclusively from this small battery; then, after the
engine is running, tie the two batteries back together by throwing the switch
back to its "run" position and thereby let the alternator keep both batteries
charged.

Any thoughts on this logic?

Mark N.
GlaStar



End Msg: 
#4 (Localized search active near current match!) 

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