00001 /* FreeEMS - the open source engine management system 00002 * 00003 * Copyright 2008, 2009 Fred Cooke 00004 * 00005 * This file is part of the FreeEMS project. 00006 * 00007 * FreeEMS software is free software: you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation, either version 3 of the License, or 00010 * (at your option) any later version. 00011 * 00012 * FreeEMS software is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with any FreeEMS software. If not, see http://www.gnu.org/licenses/ 00019 * 00020 * We ask that if you make any changes to this file you email them upstream to 00021 * us at admin(at)diyefi(dot)org or, even better, fork the code on github.com! 00022 * 00023 * Thank you for choosing FreeEMS to run your engine! 00024 */ 00025 00026 00032 /* Header file multiple inclusion protection courtesy eclipse Header Template */ 00033 /* and http://gcc.gnu.org/onlinedocs/gcc-3.1.1/cpp/ C pre processor manual */ 00034 #ifndef FILE_FUELANDIGNITIONCALCS_H_SEEN 00035 #define FILE_FUELANDIGNITIONCALCS_H_SEEN 00036 00037 00038 #ifdef EXTERN 00039 #warning "EXTERN already defined by another header, please sort it out!" 00040 #undef EXTERN /* If fail on warning is off, remove the definition such that we can redefine correctly. */ 00041 #endif 00042 00043 00044 #ifdef FUELANDIGNITIONCALCS_C 00045 #define EXTERN 00046 #else 00047 #define EXTERN extern 00048 #endif 00049 00050 00051 EXTERN void calculateFuelAndIgnition(void) FPAGE_FE; 00052 00053 00054 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& Always show your working! &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ 00055 00056 /* At least, that is what my teachers used to say 15 years ago ;-) */ 00057 00058 /******************** The full calculations in an unusable form ******************/ 00059 00060 /* Full calcs on a single line */ 00061 // 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)))); 00062 00063 /* stripped with only variables and divisors left.*/ 00064 // finalMasterPulseWidth = (((airPressure / airPressureDivisor) * (lookedUpVE / (lookedUpVEDivisor * VEpercentageDivisor))) / ((airInletTemp / airInletTempDivisor) * (desiredLambda / desiredLambdaDivisor) * (densityOfFuel / (densityOfFuelDivisor * densityOfFuelUnitDivisor)))); 00065 00066 /* stripped with only divisors left.*/ 00067 // finalMasterPulseWidth = (airInletTempDivisor * oneLambdaDivisor * densityOfFuelTotalDivisor) / (airPressureDivisor * VETotalDivisor) ; 00068 00069 /* stripped with only divisors left.*/ 00070 // divisors = 1; 00071 00072 /* totally stripped with no divisors */ 00073 // finalMasterPulseWidth = ((airPressure * lookedUpVE) / (airInletTemp * desiredLambda * densityOfFuel)); 00074 00075 /**************************** The constant calculations **************************/ 00076 00077 // unsigned short constant; 00078 /* stripped with only constants and divisors left.*/ 00079 // constant = ((msToTicks * (molarMassOfAir/ molarMassOfAirDivisor) * (perCylinderVolume / perCylinderVolumeDivisor)) / ((universalGasConstant / universalGasConstantDivisor) * (stoichiometricAFR / stoichiometricAFRDivisor) * (injectorFlow / (injectorFlowUnitDivisor * injectorFlowDivisor)))); 00080 00081 /* stripped with only divisors left. Top divisors go on bottom and bottom on top! */ 00082 // constDiv = (universalGasConstantDivisor * stoichiometricAFRDivisor * injectorFlowTotalDivisor) / (molarMassOfAirDivisor * perCylinderVolumeDivisor); 00083 //1310720= (4096 * 1024 * 1024000 ) / (100 * 32768 ); 00084 00085 /* stripped with only constants left.*/ 00086 // constant = ((msToTicks * molarMassOfAir * perCylinderVolume) / (universalGasConstant * stoichiometricAFR * injectorFlow)); 00087 //nstant = ((1250 * 2897 * 16384 ) / (34056 * 15053 * 4096 )); 00088 00089 /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ 00090 00091 00092 #undef EXTERN 00093 00094 00095 #else 00096 /* let us know if we are being untidy with headers */ 00097 #warning "Header file FUELANDIGNITIONCALCS_H seen before, sort it out!" 00098 /* end of the wrapper ifdef from the very top */ 00099 #endif
1.6.3