then you need 24 plugs.
2 spark plugs
Super Member
Joined: Dec 2009
Posts: 541
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From: USA
10 speed bicycle
WIS dual spark ignition function description:
"Two plugs for each cylinder are beneficial because of the arrangement of the valves for achieving optimal emission levels and smooth engine running. Both ignition sparks of one cylinder are released simultaneously and always with optimum power."
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,137
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From: Sherman Oaks, CA
06 CLS55 w/ P030, 05 Jag S Type R, 05 TBird-68 Dodge Charger R/T-440 w/4speed I'm original owner
Pretty much...
WIS dual spark ignition function description:
"Two plugs for each cylinder are beneficial because of the arrangement of the valves for achieving optimal emission levels and smooth engine running. Both ignition sparks of one cylinder are released simultaneously and always with optimum power."
WIS dual spark ignition function description:
"Two plugs for each cylinder are beneficial because of the arrangement of the valves for achieving optimal emission levels and smooth engine running. Both ignition sparks of one cylinder are released simultaneously and always with optimum power."
Super Member
Joined: Dec 2009
Posts: 541
Likes: 22
From: USA
10 speed bicycle
The arc does not travel from on plug to another, nor is one positive and one negative. Each Each plug has it's own positive electrode and own ground electrode. MB ignition coil contains 2 coils in one. One is an "A" coil and one is a "B" coil. There is a functionality via sds to cutout coil a or b for smooth engine diagnosis. If the system functions as you believe, during this test you would end up with a dead miss on a cylinder...which this is not the case.
So while your theory is correct on simple physics, it is not the way the dual spark ignition functions on a 112/113 Benz.
Certain model year 111/104's function as you described. Although the arc does not jump directly from one electrode to the other. When the electromagnetic field collapses from the primary windings to the secondary windings, the spark is discharged from the coil, to the plug, across the first gap, current travel through the head, back across the other plug gap, through the wire, to negative side of he secondary coil windings.
So while your theory is correct on simple physics, it is not the way the dual spark ignition functions on a 112/113 Benz.
Certain model year 111/104's function as you described. Although the arc does not jump directly from one electrode to the other. When the electromagnetic field collapses from the primary windings to the secondary windings, the spark is discharged from the coil, to the plug, across the first gap, current travel through the head, back across the other plug gap, through the wire, to negative side of he secondary coil windings.
Last edited by MBtech1098; Oct 26, 2010 at 11:11 AM.
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Joined: Jun 2008
Posts: 3,834
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From: Texas
2003 CL55
If you moded your engine, change them out.. I went one heat range colder and it is a quick easy change X 16 plugs!
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
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Newbie
Joined: Nov 2010
Posts: 5
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From: upstate NY
2003 CL 55 AMG
Dual plug cyclinders have a more complete fuel burn, less emissions and more power, PLUS they are less prone to detonation with a smoother flame travel. Sorry but NOT due to "one plug being negative and the other positive"....
Member
Joined: May 2008
Posts: 108
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From: Denmark
SL65 AMG, X5-4.8i M-Sport, 530D, 528i
Dual spark plugs have multiple purposes!
Talking from the SL65-AMG engine with dual spark plugs pr cylinder, the design have a multipurpose use.
One is to have a better and more efficient spark/ignition and therefore a faster and more efficient burning in the combustion champer without knocking to happened.
Second is to be able to measure the possible ignition knocking in the combustion chamber long before the normal knocking sensors mounted in the cylinder block picks up the situation. This is done immediately after each firing of the opposite spark plug in the combustion chamber.
Third is to be able switch between single, simultaneously or sequently fireing the spark plugs depending on the load/driving condition of the engine.
I have the fuld MB official technically description available if you are interested. I'm not sure if the V8 has same advanced ignition system, but my best guess is it has!
One is to have a better and more efficient spark/ignition and therefore a faster and more efficient burning in the combustion champer without knocking to happened.
Second is to be able to measure the possible ignition knocking in the combustion chamber long before the normal knocking sensors mounted in the cylinder block picks up the situation. This is done immediately after each firing of the opposite spark plug in the combustion chamber.
Third is to be able switch between single, simultaneously or sequently fireing the spark plugs depending on the load/driving condition of the engine.
I have the fuld MB official technically description available if you are interested. I'm not sure if the V8 has same advanced ignition system, but my best guess is it has!
