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Sheet1 CALCULUL DE TRACTIUNE AL AUTOVEHICULULUI camion mac - 165kW / 2900/ 14 tone
Parametrii geometrici
Ampatamentul (L)4800Lungime totala7400Latime cabina 2100Latime totala2100Inaltime totala 2800Greutatea utila (N)89000Greutatea proprie (N)42000Numar persoane3Greutate persoane (N)2250Greutate bagaje (N)600Greutate totala (N)133850Repartizarea greutatii pe puntiRaportul a/L0.78a =3.74
Raportul b/L0.22b =1.06
G129447NG252201.5NG352201.5NDistributia greutatii pe puntiPunte fata (N)29447Punte spate (N)104403Coeficientul de utilizare a greutatiihG=0.47Alegere pneurilor si stabilirea razei dinamiceSe adopta :Pneuri :12.00 R20''Jenti :8.50-20''
Latime sect. max312mmDiametrul exterior1120mml = 0.945-0.950Raza statica 530.5mmMarime camera aer12.00-20''Se adopta l=0.945Presiune aer - fata7.25daN/cm2 -spate6.75daN/cm2Viteza maxima100km/hRaza dinamica (m) = 0.529Date de proiectarePuterea motoruluiP (W)166000Turatia n(rot/min)2730AmpatamentulL (m)4.8Ecartamentul1.88GreutateaG (N)133850Raza roti motoarer (m)0.529Aria supraf. frontaleS (m2)5.88Coef. de rezist. aerodinamicaK(kg/m3)0.31Coord. centru masaA3.74Unghiul rampei max.a (grade)15Coef. rezist. la rularef0.012Coef. de aderentafi0.6Randamentul transmisieihtr0.92Coef. elasticitatec0.55Coef. adaptabilitatek1.12Coef. aerodinamicCx0.5 alfaa10.89a21.22a3-1.11n (rot/min)Pe (W)Me (N/m)c (g/kW)C (kg/h)
90064086.6310761251680.33200.0464.1100072207.2599918807689.88197.2771.2110080328.4328199462697.70195.0678.3120088395.7583293412703.79193.3785.5130096354.8452890857708.14192.1892.61400104151.302468199710.77191.4799.71500111730.738635702711.66191.23106.81600119038.762560613710.82191.46114.01700126020.983011953708.25192.15121.11800132623.008758741703.94193.33128.21900138790.448569997697.91195.00135.32000144468.911214742690.14197.19142.42100149604.005461994680.64199.95149.62200154141.340080773669.40203.30156.72300158026.5238401656.44207.32163.82400161205.165508994641.74212.07170.92500163622.873856474625.31217.64178.12600165225.257651562607.15224.15185.22700165957.925663275587.25231.74192.32730166000580.95234.26194.42800165766.486660635565.63240.60199.4290000.00
Momentul maxim :711.00NmTuratia mom. max:1500rot/minViteza maximaFactorul A891Factorul B84739.9318618149
m/skm/hViteza maxima 37.22133.99Rapoartele de transmitereRaportul de transmitere al reductorului central (io)4.063Viteza critica I2.84[m/s]Puterea mom.maxim111842.5[N]F20.27Raportul de transmitere pentru treapta I (i1)7.190Alegerea numarului treptelor de viteza Se adopta nr.treptelor de viteza=6Calculul ratiei seriei geometrice a rapoartelor de transmitere din cutia de viteze
Ratia (q)n/nMConditie (q