MegaSquirt Question ... |
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MegaSquirt Question ... |
SirAndy |
Nov 2 2004, 04:47 PM
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#1
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Resident German Group: Admin Posts: 41,681 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
anyone here know if i can use the MegaSquirt to run just a single injector at a very high pulse, like let's say 32 times per revolution of the crankshaft ...
possible or do i need to build/program my own FI-Brain ? (IMG:style_emoticons/default/idea.gif) Andy |
lapuwali |
Nov 2 2004, 05:28 PM
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#2
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
Most injectors have a minimum cycle type (fully closed to fully open to fully closed again) in the 2-3 millisecond range. So, you're looking at 300-500/sec as a maximum. This also doesn't include the time it has to deliver the fuel, which can be lengthy at most common fuel pressures (several more milliseconds). A 10K rpm four-stroke twin (say, a racing bike) is about the worst case for these things, and that's only 40 injection events per second. Even such engines often use two injectors per cylinder just to get enough fuel in the thing in the alloted time.
Figure 50/sec is pushing the envelope, and design from there. |
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