british-cars
[Top] [All Lists]

Re: electronic ignition

To: PKR@SLACVM.SLAC.Stanford.EDU
Subject: Re: electronic ignition
From: phile@stpaul.gov (Philip J Ethier)
Date: Mon, 22 Nov 1993 14:13:47 -0600 (CST)
PKR@SLACVM.SLAC.Stanford.EDU writes > 
> >>Nigel Pearson writes
> 
> >>A CDI system is similar to TAI, except that it stores energy
> >>in a high voltage capacitor which is discharged into the coil. This results
> >>in a much more powerfull spark. Initially, the systems dumped too much
> >>energy into the coil, which resulted in the spark firing in more than one
> >>of the plugs at once.
> 
> >Since this system still uses the distributor cap and rotor, I don't see how
> >this is possible.
> 
> >phile@stpaul.gov
> 
> My $0.02,
> it does happen because the CDI makes a spark with an extremely fast
> rise time. The inductive coupling of the HT leads just running parallel
> from the distributor to the plugs is enough to make the spark in one lead
> generate sparks in the others.
> Patrick Krejcik.

Is this why I have sometimes seen that you want to have your spark plug
wires cross each other at least once?  Pat?

"Don't cross the beams!" - Ghostbusters


<Prev in Thread] Current Thread [Next in Thread>