__     __
 \ \   / /
  \ \ / / 
   \ V /  
    \_/   
          

     ##  
         
    ###  
     ##  
     ##  
 ##  ##  
 ##  ##  
  ####   

         
         
  ###### 
 ##  ##  
 ##  ##  
  #####  
     ##  
    #### 

  ______
 |___  /
    / / 
   / /  
  / /__ 
 /_____|
        
        

 ##      
 ##      
 #####   
 ##  ##  
 ##  ##  
 ##  ##  
 #####   
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
GenBoard/UnderDevelopment/AlphaN says- pw = req_fuel * MAP * VE(RPM, MAP) / lambda(RPM,MAP) * gammae * ego_corr (speed density: config13 bit2=0) pw = req_fuel * VE(RPM,TPS) / lambda(RPM,TPS) * gammae * ego_corr (with alphaN, without MAP: config13 bit2=1) Notes: * the gamma_enrichment is the multiple of warmup, afterstart, airdenfactor, baro, etc... enrichments. ** airden: gas law, appr. 10% enrichment for -30C change in MAT ** baro: there is a linear 4% enrichment for 10% less than normal baro (to compensate for more gasflow caused by lower exhaust backpressure) * the '''lambdacorr table''' (the 1/lambda is stored for efficiency, so we call it lambdacorr not lambda) is '''used as a constant multiplier in open loop mode and closed loop as well'''. This is the only reasonable operation that gets the desired operation when user changes VE table. ** note that in closed loop mode, ego_corr is adjusted by the ego controller (config.ego_ ...) considering the measured lambda and target lambda (VE table) ** in open-loop mode, ego_corr is always 1.0 (stored as 128 inside SRAM) so the ego_corr is not changed according to the measured lambda. * firmware (eg. for v3.x) sample MAP before starting, and store that value (unless it deviates from config.baro more than config.dbaro: in that case, eg. if ECM resets during engine running, we don't believe that baro is 20kPa and config.baro is used). grep baro global.h **uint8_t config13; // c13, bit3:baro bit2:alphan bit1:WBO2 bit0:oddfire ** uint8_t baro; // mean barometric pressure ** uint8_t dbaro; // max difference in barometric pressure
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.