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Reanimotion Reanimotion is offline
umop apisdn
 
Join Date: Jun 2014
Location: Brisbane, Australia
Posts: 441
Thanks Alan,
The restrictor might work but would kill control response speed, an EFI line damper may also help minimise the pulsing but would just be patching a poor design. This prototype based on the Injector was really intended as a baseline as it mimicked a known setup, the result wasn't unexpected, although the magnitude was.

I have two options as I see it to retain the WUR portion of the project.
1. see if we can drive an injector at high frequency to be partially open, thus giving variable constant flow, it's a long shot and dependant on the strength of the internal return spring and opposition to fuel flow.
2. go for plan B which is a block based on the Bosch Differential Pressure Regulator or a bespoke but similar design.

If we abandon the WUR replacement we still have mappable control of the bypass injector for enrichment as per Thierry25's layout.
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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 09-07-2014, 04:18 AM
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