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Can anybody explain to me how a distributorless ignition system works?

A computer controls when the spark is delivered..... I don't have any diagrams... if you have any specific ?'s, just ask..


zs<---getting ASE certified soon
 
Dunno if diagrams are that useful... like zs said, just it's just some chip or computer controls the firing based on a fuel mapping and other misc engine conditions depending on the system. I'm not sure how to diagram that one... there's a diagram of the internal combustion engine
here and EDIT: found a part about ignition systems here and it goes on to talk about distributorless ignition systems a bit.
 
The big thing is that distributorless ignitons fire onboth the bang and the blow strokes 🙂 ( suck, press, bang, blow ) 🙂

That way, you only need 4 coils for a 8 cyl engine. The recharge rate is therefore higher ( and voltage delivered to the plugs ) then having a coil fire 8 times.

The coils are triggered from the crank. Some engines use an internal sensor stator ring on the crank, while most use a hall effect trigger on the snout of the crank.
 
Evadman, I don't think every system is a wasted spark system. Sometimes, each spark plug gets it's own coil, so little complexity can be eliminated.
 


<< ..fire onboth the bang and the blow strokes 🙂 ( suck, press, bang, blow ) 🙂 .. >>



Hmm... I was getting excited just reading that post. (Here come the "distributor shaft" jokes...)
 
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