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 send them upstream to us at admin@diyefi.org
  21
  22         Thank you for choosing FreeEMS to run your engine! */
  23
  24 /* Header file multiple inclusion protection courtesy eclipse Header Template   */
  25 /* and http://gcc.gnu.org/onlinedocs/gcc-3.1.1/cpp/ C pre processor manual              */
  26 #ifndef FILE_FUELANDIGNITIONCALCS_H_SEEN
  27 #define FILE_FUELANDIGNITIONCALCS_H_SEEN
  28
  29 #ifdef FUELANDIGNITIONCALCS_C
  30 #define EXTERN
  31 #else
  32 #define EXTERN extern
  33 #endif
  34
  35 EXTERN void calculateFuelAndIgnition(void) FPAGE_FE;
  36
  37 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& Always show your working! &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
  38
  39 /* At least, that is what my teachers used to say 15 years ago ;-) */
  40
  41 /******************** The full calculations in an unusable form ******************/
  42
  43 /* Full calcs on a single line */
  44 //      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))));
  45
  46 /* stripped with only variables and divisors left.*/
  47 //      finalMasterPulseWidth = (((airPressure / airPressureDivisor) * (lookedUpVE / (lookedUpVEDivisor * VEpercentageDivisor))) / ((airInletTemp / airInletTempDivisor) * (desiredLambda / desiredLambdaDivisor) * (densityOfFuel / (densityOfFuelDivisor * densityOfFuelUnitDivisor))));
  48
  49 /* stripped with only divisors left.*/
  50 //      finalMasterPulseWidth = (airInletTempDivisor * oneLambdaDivisor * densityOfFuelTotalDivisor) / (airPressureDivisor * VETotalDivisor) ;
  51
  52 /* stripped with only divisors left.*/
  53 //      divisors = 1;
  54
  55 /* totally stripped with no divisors */
  56 //      finalMasterPulseWidth = ((airPressure * lookedUpVE) / (airInletTemp * desiredLambda * densityOfFuel));
  57
  58 /**************************** The constant calculations **************************/
  59
  60 //      unsigned short constant;
  61         /* stripped with only constants and divisors left.*/
  62 //      constant = ((msToTicks * (molarMassOfAir/ molarMassOfAirDivisor) * (perCylinderVolume / perCylinderVolumeDivisor)) / ((universalGasConstant / universalGasConstantDivisor) * (stoichiometricAFR / stoichiometricAFRDivisor) * (injectorFlow / (injectorFlowUnitDivisor * injectorFlowDivisor))));
  63
  64         /* stripped with only divisors left. Top divisors go on bottom and bottom on top! */
  65 //      constDiv = (universalGasConstantDivisor * stoichiometricAFRDivisor * injectorFlowTotalDivisor) / (molarMassOfAirDivisor * perCylinderVolumeDivisor);
  66         //1310720= (4096                                                * 1024                                     * 1024000                             ) / (100                                       * 32768                                   );
  67
  68         /* stripped with only constants left.*/
  69 //      constant = ((msToTicks * molarMassOfAir * perCylinderVolume) / (universalGasConstant * stoichiometricAFR * injectorFlow));
  70         //nstant = ((1250          * 2897                       * 16384                    ) / (34056                            * 15053                         * 4096            ));
  71
  72 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
  73
  74 #undef EXTERN
  75
  76 #else
  77         /* let us know if we are being untidy with headers */
  78         #warning "Header file FUELANDIGNITIONCALCS_H seen before, sort it out!"
  79 /* end of the wrapper ifdef from the very top */
  80 #endif