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Ducie54

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Posts posted by Ducie54

  1. Happy to help.

    Another suggestion is to use an auxiliary/fuel/ignition output to trigger a fix amount of air bleed using a solenoid. Then use a timer on this output. So when you shift though the gears the neutral step is not added as its no longer required or only now very small.

    You could then use the 3d idle ignition for the power steering idle up. 

  2. As Adam mentioned 4% is a normal valve and the closed loop works well at such small levels. 

    Another thing you could do is drop the timing down at idle in neutral and add more idle speed to keep the rpm up. That way there is less idle duty cycle between park/netural and when in gear.

    With the 3d table add in more timing when in gear to keep the neutral to park idle speed duty cycle closer.

    All else fails use a larger and quicker responsive iscv. 

  3. 7 hours ago, RA004E said:

    By setting up the secondarry injection staging table, using Sec/Pri flow ratio in staged injection control you get a pre-calcuated E%. It would be the same if I put the E85 in the second tank...
    Unless the second fuel has the same stoich ratio as the main fuel.

     

    Unless you run a dead head fuel system with no return line you would not achieve accurate results. As the returning blended fuel would affect the pw ratio of E% to 98%. 

    My way of doing it is slightly different. I would use 8 1050cc injectors. Run a open loop fuel system with both fuels into a PWM 3 way valve. From there into a ethanol sensor (run in parallel off main fuel line) into both fuel rails.

    Sound like a lot of problems for no gain. HPA have a good webinar on blending fuels.

  4. I set up an injector test bench to get a rough figure of SPAT and deadlines then used a digital power supply while driving to set the dead times. From the new dead times I tweaked the SPAT to get a flatter fuel map. 

    Is your injectors the 90/1100 with the diffuser plate? Mine are the 90/1300 but I run at 4 bar as the spray pattern in better.

     

     

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