src/inc/fuelAndIgnitionCalcs.h

   1 /*      fuelAndIgnitionCalcs.h
   2
   3         Copyright 2008 Fred Cooke
   4
   5         This file is part of the FreeEMS project.
   6
   7         FreeEMS software is free software: you can redistribute it and/or modify
   8         it under the terms of the GNU General Public License as published by
   9         the Free Software Foundation, either version 3 of the License, or
  10         (at your option) any later version.
  11
  12         FreeEMS software is distributed in the hope that it will be useful,
  13         but WITHOUT ANY WARRANTY; without even the implied warranty of
  14         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15         GNU General Public License for more details.
  16
  17         You should have received a copy of the GNU General Public License
  18         along with any FreeEMS software.  If not, see http://www.gnu.org/licenses/
  19
  20         We ask that if you make any changes to this file you email them upstream to
  21         us at admin(at)diyefi(dot)org or, even better, fork the code on github.com!
  22
  23         Thank you for choosing FreeEMS to run your engine! */
  24
  25
  26 /* Header file multiple inclusion protection courtesy eclipse Header Template   */
  27 /* and http://gcc.gnu.org/onlinedocs/gcc-3.1.1/cpp/ C pre processor manual              */
  28 #ifndef FILE_FUELANDIGNITIONCALCS_H_SEEN
  29 #define FILE_FUELANDIGNITIONCALCS_H_SEEN
  30
  31
  32 #ifdef EXTERN
  33 #warning "EXTERN already defined by another header, please sort it out!"
  34 #undef EXTERN /* If fail on warning is off, remove the definition such that we can redefine correctly. */
  35 #endif
  36
  37
  38 #ifdef FUELANDIGNITIONCALCS_C
  39 #define EXTERN
  40 #else
  41 #define EXTERN extern
  42 #endif
  43
  44
  45 EXTERN void calculateFuelAndIgnition(void) FPAGE_FE;
  46
  47
  48 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& Always show your working! &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
  49
  50 /* At least, that is what my teachers used to say 15 years ago ;-) */
  51
  52 /******************** The full calculations in an unusable form ******************/
  53
  54 /* Full calcs on a single line */
  55 //      final master PW = ((msToTicks * (molarMassOfAir/ molarMassOfAirDivisor) * (airPressure / airPressureDivisor) * (lookedUpVE / (lookedUpVEDivisor * VEpercentageDivisor)) * (perCylinderVolume / perCylinderVolumeDivisor)) / ((universalGasConstant / universalGasConstantDivisor) * (airInletTemp / airInletTempDivisor) * (stoichiometricAFR / stoichiometricAFRDivisor) * (desiredLambda / desiredLambdaDivisor) * (densityOfFuel / (densityOfFuelDivisor * densityOfFuelUnitDivisor)) * (injectorFlow / (injectorFlowUnitDivisor * injectorFlowDivisor))));
  56
  57 /* stripped with only variables and divisors left.*/
  58 //      finalMasterPulseWidth = (((airPressure / airPressureDivisor) * (lookedUpVE / (lookedUpVEDivisor * VEpercentageDivisor))) / ((airInletTemp / airInletTempDivisor) * (desiredLambda / desiredLambdaDivisor) * (densityOfFuel / (densityOfFuelDivisor * densityOfFuelUnitDivisor))));
  59
  60 /* stripped with only divisors left.*/
  61 //      finalMasterPulseWidth = (airInletTempDivisor * oneLambdaDivisor * densityOfFuelTotalDivisor) / (airPressureDivisor * VETotalDivisor) ;
  62
  63 /* stripped with only divisors left.*/
  64 //      divisors = 1;
  65
  66 /* totally stripped with no divisors */
  67 //      finalMasterPulseWidth = ((airPressure * lookedUpVE) / (airInletTemp * desiredLambda * densityOfFuel));
  68
  69 /**************************** The constant calculations **************************/
  70
  71 //      unsigned short constant;
  72         /* stripped with only constants and divisors left.*/
  73 //      constant = ((msToTicks * (molarMassOfAir/ molarMassOfAirDivisor) * (perCylinderVolume / perCylinderVolumeDivisor)) / ((universalGasConstant / universalGasConstantDivisor) * (stoichiometricAFR / stoichiometricAFRDivisor) * (injectorFlow / (injectorFlowUnitDivisor * injectorFlowDivisor))));
  74
  75         /* stripped with only divisors left. Top divisors go on bottom and bottom on top! */
  76 //      constDiv = (universalGasConstantDivisor * stoichiometricAFRDivisor * injectorFlowTotalDivisor) / (molarMassOfAirDivisor * perCylinderVolumeDivisor);
  77         //1310720= (4096                                                * 1024                                     * 1024000                             ) / (100                                       * 32768                                   );
  78
  79         /* stripped with only constants left.*/
  80 //      constant = ((msToTicks * molarMassOfAir * perCylinderVolume) / (universalGasConstant * stoichiometricAFR * injectorFlow));
  81         //nstant = ((1250          * 2897                       * 16384                    ) / (34056                            * 15053                         * 4096            ));
  82
  83 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
  84
  85
  86 #undef EXTERN
  87
  88
  89 #else
  90         /* let us know if we are being untidy with headers */
  91         #warning "Header file FUELANDIGNITIONCALCS_H seen before, sort it out!"
  92 /* end of the wrapper ifdef from the very top */
  93 #endif