[Diy_efi] Sequential on a 2-stroke
David Cooley
n5xmt at bellsouth.net
Tue Nov 9 19:18:40 GMT 2004
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Heck, batch fire on a 2cyl 2 stroke should be fine anyway... you inject t=
o
the crankcase (or it doesn't oil the bearings!) and do it once for each
intake event... if it's too much fuel for a single injector, or has a sp=
lit
crankcase, one injector on each side in batch mode and tuned for 1/2 the
required fuel per squirt... 1 squirt per intake event in batch mode gives=
2
squirts per cyl/rotation.=0D
=0D
=0D
-------Original Message-------=0D
=0D
From: Daniel Nicoson=0D
Date: 11/09/04 13:58:11=0D
To: A list for Do-It-Yourself EFI=0D
Subject: RE: Re[2]: [Diy_efi] Sequential on a 2-stroke=0D
=0D
Two thoughts:=0D
=0D
1) Depending on intake manifold design, if you can batch fire a 4-cycle w=
hy=0D
not batch fire a 2-cycle?=0D
=0D
2) Check the Megasquirt stuff, do they drive ALL injectors with just one=0D
transistor? I was thinking there might be two transistors (channels) whi=
ch=0D
could give you sequential operation on a 2-cylinder.=0D
=0D
Good luck,=0D
=0D
Dan=0D
=0D
-----Original Message-----=0D
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org
>mailto:diy_efi-bounces at diy-efi.org">diy_efi-bounces at diy-efi.org
[mailto:diy_efi-bounces at diy-efi.org]On=0D
Behalf Of Lee C. Bussy=0D
Sent: Tuesday, November 09, 2004 1:27 PM=0D
To: A list for Do-It-Yourself EFI=0D
Subject: Re[2]: [Diy_efi] Sequential on a 2-stroke=0D
=0D
=0D
> Wouldn't megasquirt be configurable to do it?=0D
=0D
No, Megasquirt is (presently) batch fire.=0D
=0D
-Lee=0D
=0D
=0D
_______________________________________________=0D
diy_efi mailing list=0D
diy_efi at diy-efi.org=0D
http://lists.diy-efi.org/mailman/listinfo/diy_efi=0D
=0D
_______________________________________________=0D
diy_efi mailing list=0D
diy_efi at diy-efi.org=0D
http://lists.diy-efi.org/mailman/listinfo/diy_efi=0D
=2E
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<DIV>Heck, batch fire on a 2cyl 2 stroke should be fine anyway... you inj=
ect to the crankcase (or it doesn't oil the bearings!) and do it once for=
each intake event... if it's too much fuel for a single injector, =
or has a split crankcase, one injector on each side in batch mode and tun=
ed for 1/2 the required fuel per squirt... 1 squirt per intake event=
in batch mode gives 2 squirts per cyl/rotation.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV id=3DIncrediOriginalMessage><I>-------Original Message-------</I></D=
IV>
<DIV> </DIV>
<DIV id=3Dreceivestrings>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt"><I><B>From:</B></I> <A href=3D"m=
ailto:A6intruder at adelphia.net">Daniel Nicoson</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt"><I><B>Date:</B></I> 11/09/04 13:=
58:11</DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt"><I><B>To:</B></I> <A href=3D"mai=
lto:diy_efi at diy-efi.org">A list for Do-It-Yourself EFI</A></DIV>
<DIV dir=3Dltr style=3D"FONT-SIZE: 11pt"><I><B>Subject:</B></I> RE: Re[2]=
: [Diy_efi] Sequential on a 2-stroke</DIV></DIV>
<DIV> </DIV>
<DIV>Two thoughts:</DIV>
<DIV> </DIV>
<DIV>1) Depending on intake manifold design, if you can batch fire a 4-cy=
cle why</DIV>
<DIV>not batch fire a 2-cycle?</DIV>
<DIV> </DIV>
<DIV>2) Check the Megasquirt stuff, do they drive ALL injectors with just=
one</DIV>
<DIV>transistor? I was thinking there might be two transistors=
(channels) which</DIV>
<DIV>could give you sequential operation on a 2-cylinder.</DIV>
<DIV> </DIV>
<DIV>Good luck,</DIV>
<DIV> </DIV>
<DIV>Dan</DIV>
<DIV> </DIV>
<DIV>-----Original Message-----</DIV>
<DIV>From: <A href=3D"<A href=3D" mailto:diy_efi-bounces at diy-efi.org?>diy=
_efi-bounces at diy-efi.org</A> [mailto:diy_efi-bounces at diy-efi.org">mail=
to:diy_efi-bounces at diy-efi.org">diy_efi-bounces at diy-efi.org</A> [mailt=
o:diy_efi-bounces at diy-efi.org</A>]On</DIV>
<DIV>Behalf Of Lee C. Bussy</DIV>
<DIV>Sent: Tuesday, November 09, 2004 1:27 PM</DIV>
<DIV>To: A list for Do-It-Yourself EFI</DIV>
<DIV>Subject: Re[2]: [Diy_efi] Sequential on a 2-stroke</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>> Wouldn't megasquirt be configurable to do it?</DIV>
<DIV> </DIV>
<DIV>No, Megasquirt is (presently) batch fire.</DIV>
<DIV> </DIV>
<DIV>-Lee</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>_______________________________________________</DIV>
<DIV>diy_efi mailing list</DIV>
<DIV><A href=3D"mailto:diy_efi at diy-efi.org">diy_efi at diy-efi.org</A></DIV>
<DIV><A href=3D"http://lists.diy-efi.org/mailman/listinfo/diy_efi">http:/=
/lists.diy-efi.org/mailman/listinfo/diy_efi</A></DIV>
<DIV> </DIV>
<DIV>_______________________________________________</DIV>
<DIV>diy_efi mailing list</DIV>
<DIV><A href=3D"mailto:diy_efi at diy-efi.org">diy_efi at diy-efi.org</A></DIV>
<DIV><A href=3D"http://lists.diy-efi.org/mailman/listinfo/diy_efi">http:/=
/lists.diy-efi.org/mailman/listinfo/diy_efi</A></DIV>
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