OBDII Car MPG Demo Gasoline

WhatistheOBDIICarMPGDemo(Gasoline)application,howdoesitwork?

AccordingtotheintroductionofCHINHLUONGQUOC,OBDIICarMPGDemo(Gasoline)isaToolsappontheAndroidplatform.Thereiscurrentlya1.1.3versionreleasedonJul15,2019,youcanseethedetailsbelow.

Version1.1.3
Toolforeverycar(GasolineorGasoholengine)
RunsonAndroidMobileandTabletdevices


Requirement:
1.ThecarmustbeOBD-IIcomplianttousethetool
2.ABluetoothAdapterELM327orcompatible
3.TheminimumAndroidOSis:4.1andnewer
4.Thebuilt-inbluetoothdeviceonthephone(Tablet)mustbeenabledandpairedwiththebluetoothOBD-IIadapter

OBD-||protocol:
*ThefunctionalityofAutodetecttheOBD-IIprotocollet'stheapptobeveryeasytouse
*Displayingthedescriptionoftheprotocolusedinthecar
SAEJ1850PWM(Ford)
SAEJ1850VPW(GM)
ISO9141-2(Chrysler,European,Asian)
ISO14320KWP-2000
ISOCAN15765-11bit,29bit,250Kbaud,500Kbaud(mostmodelsafter2008)

Features:
*TheMAForMAP,IAT(OBDIIPIDs)mustbesupportedbythecar
*Fuelconsumptioncanbecalculated,ifavehiclesupportsPid0x0DVehicleSpeed(Vss)andPid0x10MassAirFlow(MAF).AllvehiclessupportvehiclespeedandnearlyallvehiclessupportMAF.
*Asforotherwaysofdoingthis,especiallyifyourcardoesnothaveaMAFsensor,byknowingthedisplacementoftheengine(ED),andthe"volumetricefficiency"(VE)oftheengine,MAFcanbecalculatedfromRPM,MAPandIAT.WithVE,onecanusethefollowingformulastocalculateasynthetic"massair-flow"(MAF)ingramspersecond,allwithoutaMAFsensor,usingthe"IdealGasLaw",asfollows:

IMAP=RPM*MAP/IAT
MAF=(IMAP/120)*(VE/100)*(ED)*(MM)/(R)

Notice:
*TheDEMOversionshowsexampleanddetectsthatifyourcarsupportsMAFpidorMAPpid,oryoucannotusethisappforyourcar.

NewfeatureontheProversion:
*UseSqLitedatabasefordatastorage.
*FeatureReviewyourrouteonGoogleMapwithdataofMPG(OBDII),speed(OBDII),timeandGPS.TheappwillstoredataintoSQLitedatabaseandthencanreviewonGooglemap.ThedatastoredindatabaseistheintegrationbetweenGPSlocationdataandOBDIIdatatogether

Usewithrealcar:

OnceyouhavethebluetoothOBD-IIadapterpluggedintothecar'sOBD-IIportsandpoweredon,youneedtoconnecttothecar'ssystemcomputerviathatbluetoothadapter,bypullingdowntheoptionmenuandselectitem"ConnecttoOBD-IIAdapter",adialogwindowwillappearsandshowsalistofpaireddevices(oneormoredevicesinthelist),eachpaireddevicehastwoinformationasfollowing:
Nameofpairedbluetoothdevice(forexample:obdii)
Maxaddress(forexample:77:A6:43:E4:67:F2)
TheMaxaddressisusedtodistinguishtwoormorebluetoothadaptershavethesamename.
YoumustchooseyourbluetoothOBDIIdevicebyselectthecorrectit'sname(orit'smaxaddress)inthelistandclickontheitem,thentheappstartsconnectingprocessandautodetectstheOBD-IIprotocol.

Usewith"ECUEnginePro"appfromGooglePlayStore(Simulationonly):

The"ECUEnginePro"appisinstalledintoanotherdeviceandactasacarengineECUsimulation.Theconnectiontothisdeviceisthesameasabovewitharealcar

Screenarrangement
*4smallanaloggaugeforIAT,MAF,MAP,VSS,RPMrealtimedatareading,1biganaloggaugeforshowinginstantMPGvalueandatableusedtodisplaytheaverage(AVG)MPG,L/100Km,amountfuelconsumedinGallonsandinliters
*2OdometerscalculatedinMilesandinKilometers.1tripmeterfortimesinceenginestart
*AlogoindicatesFueltype(GasolineorExx),alogoindicateeitherUSGallonorImperial(UK)Gallon

Setting...
ForexampletheVEof19997.4LChevySuburbanisabout65%.Smaller,higherperformanceenginescanhaveVE'sof85%orhigher.(Byconvention:WesetVE=0.65for65%...)
TheEDwesetED=1.6forengine1.6liters...
SettheFueltypeasGasolineorExx,setGallonUSorGallonUK

Theresultoflastworkisstoredandwillbereloadedfornexttimeyouruntheapp.thesedatawillbeoverwrittenautomaticallywhentheappstops(finish)