Non-Resistor Plugs...Once More - PeachParts Mercedes-Benz Forum

Chas H · #1 12-27-2008, 03:13 PM

Quote:

Originally Posted by whipplem104

The mercedes waste spark does not work this way. Spark is actually out to both plugs and maximum current to the plug under compression.

Sure it does. The current flows out the center and across the gap of one spark plug, through the block, and then from the side electrode across the gap to the center of the other plug. It's a big circle.

Kestas · #2 12-27-2008, 08:02 PM

Quote:

Originally Posted by Chas H

Sure it does. The current flows out the center and across the gap of one spark plug, through the block, and then from the side electrode across the gap to the center of the other plug. It's a big circle.

Chas, I believe you and whipple are both correct. Though the current flows in a big circle across two plugs, 80% of the spark energy is used in the compressed cylinder. It has to do with the difference in environment around the gap.

Chas H · #3 12-27-2008, 08:17 PM

Quote:

Originally Posted by Kestas

Chas, I believe you and whipple are both correct. Though the current flows in a big circle across two plugs, 80% of the spark energy is used in the compressed cylinder. It has to do with the difference in environment around the gap.

That's not my argument.
One spark plug of the pair will have the spark jumping from side to center electrode every revolution, half of those sparks will happen under compression.