3)PowerEquilibriumWaP(F,+F,+F,+F)3600ntWhen level road & constant speed.uaP+F)H36001CpAu?u21.153600ntNote:P,is the power needed by the vehicle to maintain the constantspeed drive on the level road; For calculating the fuelconsumptionP,that exist in the formulaof Q,(Q,=P.b/1.02uapg)must be the needed power to maintain the constant speed drive onthe levelroad
Note: Pe is the power needed by the vehicle to maintain the constant speed drive on the level road; For calculating the fuel consumption Pe that exist in the formula of Qs (Qs =Peb/1.02ua ρg) must be the needed power to maintain the constant speed drive on the level road. 2 ( ) 3600 ( ) 3600 21.15 a e f w T a D a T u P F F u C Au Gf ( ) 3600 f i w j T a e F F F F u P 3）Power Equilibrium When level road & constant speed:
4)Fule consumption calculationofvehiclewith constant speeddrive onlevelroad（StableMode）（稳定行驶）(Q~U.)A. Method One (given ig)Q-UaVehiclePowerEquilibriumGraphFuel consumptionperformance-neededoutputpowercharacteristicsofengine（负荷特性图）（功率平衡图）Step:19987654320b(g/kw.h)Pe(kw)(P+P.)/n一n3(yoo))/0o:司UaiPeua(km/h)pe(kw)60120208010040CAu?u.ua/(km·h-1)P=Gf3600m21.15>PualelLinealInsertMethod>b,ua=0.377rniglonual二2 =b .Per /1.02-uar:pgOual....二(uar,Q,)u
Q-Ua Fuel consumption performance-needed output power characteristics of engine（负荷特性图） Vehicle Power Equilibrium Graph （功率平衡图） η 4）Fule consumption calculation of vehicle with constant speed drive on level road (Stable Mode)（稳定行驶）—— (Q~Ua) A. Method One (given ig ) 2 ( ) 3600 21.15 1 1 a D a e T u C Au P Gf a e u P Step： 1 . 1 1 ( , ) ( , ) a an u u a an n u Q u Q 0 0.377 1 1 a g r n u i i a u n 1 Lineal Insert Method b 1 1 1 1 /1.02 Q b p u g e a