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umop apisdn
 
Join Date: Jun 2014
Location: Brisbane, Australia
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The frequency valve morphed into CIS-E with the DPR and the control mechanism is basically the same and is therefore worth investigating. If the range is sufficient it could be the key to full control without having to swap fuel systems it also might be possible with some creative plumbing to convert to CIS-E levels of control via the FV. Because there are basically three generations of CIS and GEN1 we know cannot do Gen2/3 control methods there are still a number of options for all intended levels of silliness.

I think the issue to date has been one of tradition - the WUR was the thing we tuned so the add on solutions played within the same area. Until we get some fuel running through these things we won't know which of the combinations is the best option.
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com

Last edited by Reanimotion; 08-07-2014 at 05:06 AM..
Old 08-07-2014, 05:03 AM
  Pelican Parts Technical Article Directory    Reply With Quote #61 (permalink)
Forced Induction Junkie
 
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Thanks Steve. I look forward to your continued success.
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Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 08-07-2014, 06:10 AM
  Pelican Parts Technical Article Directory    Reply With Quote #62 (permalink)
umop apisdn
 
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Quote:
Originally Posted by WERK I View Post
IMHO, if you want max response times of CIS, everything should be sensored in real-time upstream. Throttle Position and Air Mass will insure fuel mixtures stay at optimal levels.
Upstream sensing is definitely the primary strategy, I'm considering the expansion points as variables in pressure manipulation rather than their effect on the CP sensing
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-07-2014, 06:10 AM
  Pelican Parts Technical Article Directory    Reply With Quote #63 (permalink)
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Quote:
Originally Posted by WERK I View Post
Back in the late 1980's and early 90's, the U.S. DOT/EPA were only concerned with emissions at low engine speeds, i.e. stop and go traffic, so Porsche spent only so much money on a system they knew they had to replace in the near future.

If we (Porsche 930 owner's), have to convert fuel systems from Bosch type to another Bosch type, it may not be to our advantage in the long run. It may be time to bite-the-bullet and go EFI.
IMO, the more accurate term to use here is "constant engine speed" as that was the only time that the Lambda logic box could control afr by manipulating chamber pressures.

My feeling is that Steve's solution will have it's place among those who wish to keep as much of the stock system in place for originality reasons. Those who desire max performance will convert to EFI anyway.
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Last edited by 911nut; 08-07-2014 at 08:38 AM..
Old 08-07-2014, 06:44 AM
  Pelican Parts Technical Article Directory    Reply With Quote #64 (permalink)
umop apisdn
 
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It's pure stubborn lunacy that started this adventure so don't forget the loony demographic as potential adopters.
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-07-2014, 08:19 AM
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I guess I have completely missed the point of your project. The UTICS digiWUR simply dealt with control pressures. It sounds like you are trying to figure out how to blow more gas in the intake or something. Sorry for my intrusion.
I still think there would be a heckuva a market to replace just old WURs. It's not rocket science but there isn't a big enough market for the big engineering firms to solve this.
I don't know about you guys, but my BLWUR still needs to be played with every few months. It's a great workaround but its not a "solution."
Old 08-07-2014, 11:03 AM
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Whats new?
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Old 08-14-2014, 10:53 AM
  Pelican Parts Technical Article Directory    Reply With Quote #67 (permalink)
umop apisdn
 
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I'm interstate this week for a wedding, will be back on deck next week.

I'm told the 6 prototype metering blocks are being completed now, and we have the rest of the goodies needed on hand.
The body side of the wiring harness in the vehicle is complete and the MicroSquirt tested with the new firmware and harness. Wideband O2 / MAP / Coolant / RPM and vehicle speed are all functional.
I've set it up initially for a replaceable engine side harness as we go through the possible install combinations.

Nearly there folks, the next few weeks should be interesting
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-14-2014, 06:46 PM
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Old 08-14-2014, 07:10 PM
  Pelican Parts Technical Article Directory    Reply With Quote #69 (permalink)
umop apisdn
 
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I returned from interstate today and the prototype blocks were waiting on my desk
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-19-2014, 03:08 AM
  Pelican Parts Technical Article Directory    Reply With Quote #70 (permalink)
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Sound interesting and good luck with the results.
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Old 08-19-2014, 03:50 AM
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CNC or "manual"? I hope it's the former.
Old 08-19-2014, 05:25 AM
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umop apisdn
 
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CNC

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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com

Last edited by Reanimotion; 08-19-2014 at 05:57 AM..
Old 08-19-2014, 05:55 AM
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Old 08-19-2014, 06:16 AM
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Steve,
Very Pu-u-u-u-rdy!

Are those sensors or fittings circled in the pic?

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'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P

Last edited by WERK I; 08-19-2014 at 06:35 AM.. Reason: let out some words ;)
Old 08-19-2014, 06:30 AM
  Pelican Parts Technical Article Directory    Reply With Quote #75 (permalink)
umop apisdn
 
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Thanks, the guys normally do medical and scientific work so are used to fine work. As these are only prototypes they have been left raw, normally they would be tumbled and anodised as well.

The items circled in the pic are 0-100 psi digital pressure sensors
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-19-2014, 06:38 AM
  Pelican Parts Technical Article Directory    Reply With Quote #76 (permalink)
umop apisdn
 
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First validation run during install and sensor calibration

more to come tomorrow
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-23-2014, 01:24 AM
  Pelican Parts Technical Article Directory    Reply With Quote #77 (permalink)
umop apisdn
 
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This is all with the standard WUR in place and CP monitoring

upper
RPM
AFR Target
AFR actual

Lower
MAP
Control pressure



expanded to 10x for detail

and


Logging on road tomorrow for base line and then installation of the eWUR to see what we have
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Steve
1981 928S 4.7 ROW with KE3-Jetronic and Franken8 (AEM Inifinty) follow at [http://www.frankencis.com/Activity-Feed/userid/2]
Yes! mechanical/hydraulic constant flow injection can be managed by a modern EMS

www.FrankenCIS.com
Old 08-23-2014, 08:31 AM
  Pelican Parts Technical Article Directory    Reply With Quote #78 (permalink)
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Cool stuff! Looking forward to hearing more and it looks like something good is coming.
Old 08-23-2014, 08:51 AM
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Brando
 
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Let's call this EFC cis for electronic fuel control
Or ECP cis for electronic control pressure.
Old 08-23-2014, 09:05 AM
  Pelican Parts Technical Article Directory    Reply With Quote #80 (permalink)
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