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ignition condenser [= radio noise capacitor] - revisited
> wrote
> jim beam wrote: > > so, if i understand correctly, a condenser in good working order will > > promote a strong healthy spark - which corresponds with good engine > > performance. now all we need to do is figure out how an igniter with a > > built-in condenser works well with an external condenser, works well > > with no condenser, but doesn't work as well with an aged condenser. terry? > > > ++++++++++++++++++++++++ > I did some simple test Sunday afternoon. > I got my scope back and nmade several "Speed" runs. > Run#1 stock > Run#2 capacitor disconnected > > With the cap out of circuit I noticed some "flutter" in the > ignition drive from the ECU. I used a 100Meg to sneak a look > at teh HV out and it too had the flutter. The primary FI had > over a 10% reduction in n width. And accleration was sluggish. > I expected to experience back fires but other then a very > slight "stumble" no gross effects. > > It did wipe out my radio reception, both AM and FM. And The Kenwwod > had ignition pulses while playing MP3s from a Rio self powered MP3 > player. > > When we got back home I pulled the floor cover from the ECU and was > able to "see" farily high amplitude ingitno spikes that are not there > when the cap is in place. > > > With effects like this I expected to see some effect on the dwell > time at hihger RPM , but noe was observed. > > So the capacitor is important, and should be checked for capacitance, > and ESR. I wish I had a bad one, but all the ones I have checked within > ~10%. A none issue for non tunned circuit cpacitors. > > As I expected adding more capacitance, IE paralleling several caps, > made no difference. Really interesting read. |
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ignition condenser [= radio noise capacitor] - revisited
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ignition condenser [= radio noise capacitor] - revisited
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