Page 3 of 3 FirstFirst 123
Results 21 to 23 of 23

Thread: dword value translate into real

  1. #21
    EFILive Developer Site Admin Blacky's Avatar
    Join Date
    Mar 2003
    Posts
    9,503

    Default

    The machine I tested it on was: Windows 7 64-bit Intel i7 dual 3.4GHz, 12GB RAM, so I don't think it is the speed of the computer that is causing the problem.
    The only setting that controls the playback speed is shown below:
    Click image for larger version. 

Name:	playback_speed.PNG 
Views:	291 
Size:	67.2 KB 
ID:	14411

    Regards
    Paul
    Before asking for help, please read this.

  2. #22
    Junior Member
    Join Date
    Jan 2012
    Posts
    16

    Default

    Paul next guy wanna know if the injection time is this right here:
    * 11 OLDRFPER TIME BETWEEN REFERENCE PULSES (MSB)
    * 12 +1 OLDRFPER TIME BETWEEN REFERENCE PULSES (LSB)
    ************************ MSEC = ([N11] * 256 + [N12]) / 65,536

    This information is contained in A135.DS that matches my powerful Chevrolet Kadett GL 1.8 EFI Petrol.

    I mounted the macro and now need to make sure if that's right. As to factor too have doubts, did seguite:
    TI = ((11 * 256) + 12) / 65536, the result was 0.043151855. Is that correct?

    I ask this because I want is to calculate consumption liters per hour and according to information I passed the time should be used for injection.
    Besides, you know the formula to calculate the consumption of liters per hour at injection time?

    Thanks!

  3. #23
    EFILive Developer Site Admin Blacky's Avatar
    Join Date
    Mar 2003
    Posts
    9,503

    Default

    "Reference Pulses" refers to the pulses from the crank sensor on the flywheel and is used to calculate RPM.
    It provides a higher resolution signal than the previous byte, which only shows RPM in increments of 25.

    The formula is actually
    ((11*256)+12)*65.536 (sixty-five point five three six) = 43.151855

    To convert references pulses to RPM you need to do this (assuming the crank trigger has 60 teeth):
    One complete revolution will take 43.151855*60 teeth = 2589ms
    So in 1 millisecond the crank will complete 1/2589 revolutions.
    Multiply that by 60,000 to convert milliseconds to minutes and get rpm = 23 rpm

    23 rpm seems a bit low so maybe your crank does not have 60 teeth.

    ------------------------

    Injector pulse width is defined here:

    36 BPW BASE PULSE WIDTH (MSB)
    37 BPW+1 BASE PULSE WIDTH (LSB)
    mSEC = ([N36]*256 + [N37])/65.536

    To convert from pulse width to fuel flow in liters you must know the "flow rate" of your injectors.

    Regards
    Paul
    Before asking for help, please read this.

Page 3 of 3 FirstFirst 123

Similar Threads

  1. Real lean at WOT or WB ?
    By maudyZ28 in forum Gen III V8 Specific
    Replies: 2
    Last Post: September 10th, 2012, 08:30 AM
  2. Real Time
    By BadLSX in forum Gen III V8 Specific
    Replies: 11
    Last Post: June 7th, 2012, 03:16 PM
  3. real time VE
    By myws6formula in forum RoadRunner Real-Time PCM Emulator
    Replies: 0
    Last Post: April 14th, 2012, 02:48 PM
  4. Real lean then real rich when zipping the throttle...
    By LS1_Dragster in forum General (Petrol, Gas, Ethanol)
    Replies: 11
    Last Post: March 11th, 2011, 09:23 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •