DIY_EFI Digest Friday, July 2 1999 Volume 04 : Number 392 In this issue: Re: AIC small fuel injector? See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Fri, 02 Jul 1999 12:28:05 +0200 From: Jan =?iso-8859-1?Q?W=E4nnman?= Subject: Re: AIC Hi The V/F converter does not usually change the pulswidth so the duyt cycle is normally 50 % , you probobly have to involve PWM (Pulse Width Modulator) instead of an V/F.. / Janne > > > ------------------------------ > > Date: Thu, 01 Jul 1999 22:02:21 -0400 > From: Joseph Franz Obernberger > Subject: AIC > > Hi! > This is my first post. I was looking through the > archives about additional injector controllers, since I was curious about > building one for my 1991 MR2 Turbo. I was thinking about using a couple > LM1949 chips from National Semiconductor. These neato little guys take > a duty cycle signal and drive an injector (using a trans ofcoarse). What > do anyone > thinking about using a voltage to frequency converter to convert the boost > signal from a pressure sensor to a freq. that the LM1949 could use. As boost > increases the duty cycle would increase and hence more fuel squirted. > Thughts? Is this how a V-F converter works? > Thanks! > JoeO > > ------------------------------ ------------------------------ Date: Fri, 02 Jul 1999 07:53:00 -0500 From: dave.williams@xxx.us (Dave Williams) Subject: small fuel injector? I can run two staged injectors per cylinder with my ECU. For a big block application, I'd like to run the smallest possible injectors as the primaries, to get the best atomization of fuel possible. The smallest commonly available injectors I have found are 14 lb/hr, used on most Ford fours and some V6s. Are there any smaller injectors out there? ==dave.williams@xxx.us====================================== I've got a secret / I've been hiding / under my skin / | Who are you? my heart is human / my blood is boiling / my brain IBM | who, who? =================================== http://home1.gte.net/42/index.htm ------------------------------ End of DIY_EFI Digest V4 #392 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".