[Diy_efi] duty cycle
cobraman at insightbb.com
cobraman at insightbb.com
Thu Jan 27 19:56:38 GMT 2005
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am confused about what injector duty cycle actually means. Would an injector
working at say 50% duty cycle be injecting the same AMOUNT of feul at say
2000rpm as at 3000rpm. yes except for the turn on/off variance.
Does the % relate to the amount of time the injector is squirting feul per
revolution in which case (with static feul pressure) there is less time to
inject feul at 3000rpm then 2000rpm so a 50% duty cycle at 3000rpm means that
less feul is injected per cylinder?
The % relates to the amount of time the injector is squirting fuel per hour or
other unit of time. It has nothing to do with RPM.
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From: "Craig Dunn" <dunnbeetle at bigpond.com>
To: <diy_efi at diy-efi.org>
Subject: [Diy_efi] duty cycle
Date: Thu, 27 Jan 2005 11:40:24 +0000
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I am confused about what injector duty cycle actually means. Would an =
injector working at say 50% duty cycle be injecting the same AMOUNT of =
feul at say 2000rpm as at 3000rpm.
Does the % relate to the amount of time the injector is squirting feul =
per revolution in which case (with static feul pressure) there is less =
time to inject feul at 3000rpm then 2000rpm so a 50% duty cycle at =
3000rpm means that less feul is injected per cylinder?
If that is true then would you need an duty cycle of say75% to inject =
the same amount of feul at 3000 revs as 50% DC at 2000revs?
Am i on the right track or how does duty cycle work
Thank
Beetle
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<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2>I am confused about what injector duty =
cycle=20
actually means. Would an injector working at say 50% duty cycle be =
injecting the same AMOUNT of feul at say 2000rpm as at=20
3000rpm.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Does the % relate to the amount of time =
the=20
injector is squirting feul per revolution in which case (with =
static feul=20
pressure) there is less time to inject feul at 3000rpm then 2000rpm so a =
50%=20
duty cycle at 3000rpm means that less feul is injected per=20
cylinder?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>If that is true then would you =
need an =20
duty cycle of say75% to inject the same amount of feul at 3000 revs as =
50% DC at=20
2000revs?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Am i on the right track or how does =
duty cycle=20
work</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Thank</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>Beetle</FONT> </DIV></FONT></DIV></BODY></HTML>
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