[Diy_efi] Re: Diy_efi Digest, Vol 4, Issue 40

[Bill Washington]

Phil,
	If I remember correctly, the flame also changed colour when combustible gas was present, giving the miners a relatively safe warning to get out and ventilate the mine.

Regards
Bill



Message: 4
Date: Wed, 29 Jun 2005 01:43:51 +1000
From: Phil Lamovie <phil at injec.com>
Subject: [Diy_efi] Re: davy lamps and
To: diy_efi at diy-efi.org
Message-ID: <42C17037.419C6386 at injec.com>
Content-Type: text/plain; charset=us-ascii


On first glance it appears that the temperature of
the metal and it's ability to cool a local zone below
the ignition temp that would "prevent " the escape
of the ignition source to the atmosphere.

The dead zone in an IC engine can be more than 1 mm
thick under some operating conditions.

Still it seems that having a combustible mixture of
methane in the air you're breathing can't possibly be
good for you even if it doesn't ignite.