Semi sequential setting

[juanj]

Hi guys, I have many questions:

Ms2 v3
4cyl 1-3-4-2 order

I want to run semi sequential injection like wasted spark ignition,2 injection events per cycle at port.
What it's the best way?

4 squirt/alternate/untimed

Or

4 squirt/alternate/semi-sequential

Or

2 squirt/ simultaneous /semi-sequential ??

[racingmini_mtl]

All 3 are similar. But that last 2 are identical (semi-sequential overrides the simultaneous/alternative selection) and allow you to choose the injection timing.

So if you're willing to do a bit of experimentation, you can find what injection timing your engine prefers when you use semi-sequential. If you're not going to do so, any of the 3 will have similar results.

Jean

[juanj]

Ok! Jean, you said that last 2 are identical because allow to choose timing.
At 2 squirts / simultaneous / semi seq , the squirt event is every 360 degree exactly At tdc of 1-4 cyl?
I see that alternate is every 180 and could be more accurate. Am I right?

Thanks Jean.


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[racingmini_mtl]

When you select semi-sequential, you will get a squirt every 180 degrees regardless of the other parameters. As I said, the simultaneous and alternating parameters are ignored because each pulse is timed according to its own cylinder using the timing you entered. That is why the last two are identical; only the semi-sequential selection matters.

Jean

[juanj]

Ok James thanks for you information.


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