PROIECT MOTOARE

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Tip motor Dispunerea cilindrilorMAS LinieMarimi si indici caracteristici ai motoruluiCursa pistonului (S) S=2*r r=S/2Raportul curs alezaj ( ) este S/Dmotoare suprapatratice deoarece S>DCilindreea unitar(Vs) Vs=((pi*D^2)/4)*SCilindreea total (Vt)Vt=i*VsVolumul camerei de ardere (Vc) Vc=Vs/(eps-1)Volumul cilindrului (Va) Va=Vs+VcRaportul de comprimare ( c ) eps=Va/Vc 9.5Viteza unghiular a arborelui cotit ( e ) n= 4820504.7528920Viteza medie a pistonuluiWp[m/s]Wp=S*n/30Numrul de cicluriNcTimpul motor(tau)30n = t=n = 6 =Timpul pe ciclu (tc) Raportul dintre raza manivelei i lungimea bielei ( A) lamda=1/3,6 0.277777778l=S/2*lamda 132t =30nNctnNc= 2tnNc =120Nctc1=lSlr= = A2Nr. de cilindri gama/delta D S Eps nM nP sistem de racire5 - 89.9 73.6 9.5 3020 6900 lichidr= 36.8 mm0.81868743466946.2098 mm3 466.946 cm32334.73 cm354.93 cm3521.88 cm3rot/minrad/sgrd/s11.83 m/s440.17 cicl/s2410 cicl/min144600 cicl/h2.49E-02 s/cicl4.15E-04 min/cicl6.92E-06 h/ciclr-raza maniveleil-lungimea bieleimmArbore cu came supraalimentare2 Aspiratpres=ps= 0.25 MpaT0 = 298 K0 = 0.1 MPafp= 1Rc=Ra 287 K = 1.27Gamin= 15 kgu = 1.12ka = 1.4|pu = 0.15,a = 4d0a= 30 mm|aDSA = 30 RAC|iISA = 70 RACafp = 325 m/ssa = 0.5Slsa= 0.001 m2/lpga= 0.1992 MpaTge = 1000 Km= 1.28r = 0.03Ussa= 1500 cm2RACwp= 18.8 m/snp= 4820 rot/minepsilon= 19.8D= 116.1 mmTev= 1200 Kp0fp 1.185 kg/m^3A Trac 50 KVs= 1235.88 cm3qv Stanga:numarator Stanga: numitor Dreapta: prima paranteza 0.72459 4.676084862 0.19920 27.320.72458 4.676022221 0.19920 27.320.72457 4.675959579 0.19921 27.32dra = 0.258 mmAoa = 280pgk= 0.137 Mpapa= 0.1712 MpaTs= 314 KTa= 384 KWga= 131 m/sWsa= 345.307 m/sc 0.857 kg C/kg combh 0.133 kg H2/kg combo 0.01 kg O2/kg combGamin= 14.52 kg aer/kg combGar= 18.4389 kg aer/kg combpma= 1pmc= 0Rfp 287 J/kgKCofp= 3134.279 kg/hi= 6Cfp= 2271 kg/hCa= 2271 kg aer/hCh= 123.17 kg comb/hpc= 0.84 kg/lCc_l 146.63 l comb/hmofp= 3.613 g/ciclu*cilmfp= 2.62 g/ciclu*cilmacc= 0.654 g aer/ciclu*cilmccc= 0.213 g comb/ciclu*cilmfp= 0.867 g fluid proaspat/ciclu*cilmgr= 0.026 g gaze reziduale/ciclu*cilmgaze= 0.893 g gaze/ciclu*cilDreapta: a doua paranteza Dreapta: exponent Membru stang Membru drept0.9576 3.5 23.47405518 23.4741930.9576 3.5 23.4735755 23.474293460.9576 3.5 23.47309582 23.47439393Membru stang-Membru drept-0.000137819-0.000717965-0.001298101Valorimc 1.31...1.37 1.36 - tc= 90i 20...35 30 RAC tc= 0.002174oi=360|i Calculata 330 RAC oc= 90d 350...352 350 RAC xpc= 41.91oiar=od-|i Calculata 20 RAC Vc 321pa Calculata 0.1700 MpaTa Calculata 384 Kisa 3060 60 RACoisa calculat 240 RACS Calculat 73.6 mmr Calculata 36.8 mm Adoptat0.27778 -Vc Calculat 54.93 cmcVa Calculat 522 cmcD Calculat 89.9 mmCalculul politropiei de comprimare prin puncteXp Vx px TxRAC mm cmc Mpa K180 73.60 522 0.171 384195 72.69 516 0.172 385210 69.95 499 0.181 390225 65.38 470 0.196 399240 59.03 430 0.221 412 255 51.09 379 0.262 431270 41.91 321 0.329 457285 32.04 258 0.442 495300 22.23 196 0.644 546315 13.33 140 1.022 617330 6.21 94 1.741 711 c'345 1.60 65 2.885 813350 0.71 59 3.261 839 d360 0.00 55 3.632 864 c" RAD3.143.403.673.934.194.454.714.975.240.0000.5001.0001.5002.0002.5003.0003.5004.0000 50p[MPa] 1.0001.5002.0002.5003.0003.5004.000p[MPa] Presiunea in functie devolum 5.505.766.026.116.280.0000.5001.0001.5000.00 10.00 20.00 30.00 40.00 50.00 60.00p[MPa]V[cm3] s 2.174 msmmcmc50 100 150 200 250 300 350 400alfa[RAC] Presiunea in functie de alfa Series160.00 70.00 80.00PROCESUL DE ARDEREc h okg C/kg comb.kg. H2/kg comb.kg O2/kg comb.kJ/kgMotorin 0.857 0.133 0.01 41850Parametrul Simbol UM Domeniul de valoriValoarea adoptatUnghiul de avans la declanarea scnteiisRAC 2035 30Unghiul de nceput de arderedRAC 345360 350Viteza medie de cretere a presiuniip MPa/RAC0,20,6 0.4Coeficientul de utilizare a clduriiu- 0,860,9 0.9Unghiul de sfrit al arderiiwRAC 390400 390Unghiul de sfrit al arderii rapideyRAC 365370 370O2min= 0.104 kmol O2/kg combGamin= 0.454 kg aer/kg combO*2min= 3.339 kmol O2/kg combMa= 28.970 kg/kmol Ga*min= 14.396 kmol aer/kg comb= 1.270 (adoptat in capitolul admisiei =1)Gar= 0.576 kg aer/kg combGa*r= 18.283 kmol aer/kg combvc= 0.004 kmol comb/kg combvfp= 0.581 kmol fluid prospat/kg combr= 0.030 (adoptat in capitolul admisiei r=1)vai= 0.598 kmol amestec initial/kg combCombustibilCompoziia combustibiluluiPutere caloric inferioar |oooc= 1.0016vga= 0.599 kmoli gaze arse/kg combt= 1.002Qin= 41850 kJ/kgQiam= 2170 kJ/kgQu= 37665 kJ/kgoc'= 330 RACAod= 20 RACr= 36.800 mmA= 0.278xp= 2.817 mm Punctul dn= 6900 rot/min Punctul ctd= 0.0004831 s Punctul yy= 366 RAC Punctul zVc= 54.935 cm3 Punctul wD= 89.9 mmvp= 0.3087MPA/grd RACcv 1.1 kJ/kgKCa 2271 kg aer/hCh 123.17 kg comb/hmdc= 2.528mcy= -8.7334Ao= 12.00 RACoz= 378 RACcp= 1.387 kJ/kgKValoric Component n gazele de evacuareGi 1CO211c/33.14244CO-0.00028H2O9h1.19718O20,23(1)Gamin 0.02832N20,77 Gamin 0.44428E-4.368 122Mga= 31.467 kg gaze arse/kmol gazRM= 8314 J/kmol*KRga= 264.215 J/kg*Kbga= 4.11E-03 kJ/ kmol*K2Formula de calcul Masa molecu-lar (Mi)(((

comb kggaz kg((

kmolgaz kgkg comb./kmol224(adoptat in capitolul admisiei =1)(adoptat in capitolul admisiei r=1)Masa molecular (Mc)xp[mm] V[cmc] p[Mpa] T[K]0.71 71.49 3.2612 83941.91 54.935 6.3480 13290.2574 56.569 8.200 16222.2892 69.466 8.2000 102086.2080 94.341 6.0379 102080.07143.30E-032.36E-040.00002.09E-03 0.00E+000.06655.02E-033.34E-040.00091.67E-031.47E-060.01581.67E-032.65E-050.1388 1.21E-02 5.71E-04vibibi((

kmolgaz kgiiiMG= v(((

comb kggaz kmol ((((

2K kmolkJ((((

2K kgkJDESTINDEREr= 36.8 mmVk= 54.93 cm3D= 89.9 mm alfa[RAC] xp[mm] V[cm3] p[Mpa]o w= 390 RAC w 390 6.2080 94.34 6.0379Vw= 94.341 cm3 405 13.3340 139.57 3.6004Tw= 10208 K 420 22.2333 196.06 2.2989Pw= 6.04 Mpa 435 32.0442 258.34 1.5973A= 0.27777778 450 41.9111 320.97 1.1994465 51.0933 379.25 0.9623u' 480 59.0333 429.65 0.8162md= 1.32 495 65.3771 469.92 0.7251o DSE= 50 RAC 510 69.9475 498.93 0.2815o u'= 490 RAC 525 72.6884 516.33 0.2725Vu'= 457.715 cm3 u* 540 73.6000 522.12 0.4011Xpu'= 63.454 mmPu'= 0.751 MpaTu'= 6158 Ko u= 540 RACXu= 73.6 mmVu= 522.12 cm3Pu= 0.6310 MPaTu= 5904 KPu*= 0.401 MPaTu*= 1416 KAtu`= 100 RACttu`= 2.415 msT[K]102089006807873956899654062846107599159261416CAPITOLUL 6o[RAC] xp[mm] Vx[cm3] px[Mpa] Li=[Nm]0 0.00 54.93 0.137115 1.60 65.07 0.1712 1.5630 6.21 94.34 0.1712 5.0145 13.33 139.57 0.1712 7.7460 22.23 196.06 0.1712 9.6775 32.04 258.34 0.1712 10.6690 41.91 320.97 0.1712 10.72105 51.09 379.25 0.1712 9.98120 59.03 429.65 0.1712 8.63135 65.38 469.92 0.1712 6.89150 69.95 498.93 0.1712 4.97165 72.69 516.33 0.1712 2.98180 73.60 522.12 0.1712 0.99 Calculul indicilor indicati195 72.69 516.33 0.1725 -0.99 o d=210 69.95 498.93 0.1807 -3.07 o y=225 65.38 469.92 0.1961 -5.47 o z=240 59.03 429.65 0.2215 -8.41 o w=255 51.09 379.25 0.2624 -12.19 q d=270 41.91 320.97 0.3293 -17.24 H=285 32.04 258.34 0.4424 -24.16 A=300 22.23 196.06 0.6437 -33.82 B=315 13.33 139.57 1.0219 -47.04 C=330 6.21 94.34 1.7408 -62.48 D=345 1.60 65.07 2.8852 -67.71 E=360 0.00 54.93 3.2612 -31.14 F=363 0.06 55.34 6.3480 1.97 G=366 0.26 56.57 8.2000 8.91 pi=378 2.29 69.47 8.2000 105.75 q i=390 6.21 94.34 6.0379 177.09 ci=405 13.33 139.57 3.6004 217.98 Pi=420 22.23 196.06 2.2989 166.62 Pi=435 32.04 258.34 1.5973 121.32 Mi=450 41.91 320.97 1.1994 87.58 Calcul indicilor efectivi465 51.09 379.25 0.9623 63.00 q m=480 59.03 429.65 0.8162 44.82 pe=495 65.38 469.92 0.7251 31.03 q e=510 69.95 498.93 0.2815 14.60 ce=525 72.69 516.33 0.2725 4.82 Pe=540 73.60 522.12 0.4011 1.95 Pe=555 72.69 516.33 0.1712 -1.66 Me=570 69.95 498.93 0.1712 -2.98585 65.38 469.92 0.1712 -4.97 PL=600 59.03 429.65 0.1712 -6.89 ML=615 51.09 379.25 0.1712 -8.63 PA=630 41.91 320.97 0.1712 -9.98645 32.04 258.34 0.1712 -10.72660 22.23 196.06 0.1712 -10.66675 13.33 139.57 0.1712 -9.67690 6.21 94.34 0.1712 -7.74705 1.60 65.07 0.1712 -5.01720 0.00 54.93 0.1712 -1.73732.87Model MAC i S[mm] D[mm]Opel vectra 2,2 MAC 4 84 96Opel corsa 1,7 MAC 4 79 86Opel omega 2,0 MAC 4 84 90Skoda Octavia 1,9 MAC 4 79.5 95.5Skoda Fabia 1,4 MAC 3 79.5 95.5Soka Roomster MAC 3 79.5 95.5Seat Altea MAC 4 79.5 95.5solutia mea MAC 5 73.6 89.905101520253035404550Opel vectra2,2Opel corsa 1,7 Opel omega2,0Skoda Octavia1,9Skoda Fabia1,4SokaRoomsterSeat Altea solutia meaPuterea litrica 05101520253035Opel vectra2,2Opel corsa1,7Opelomega 2,0SkodaOctavia 1,9Puterea raportata la aria pistonuluiCalculul indicilor indicati1.30141.02971.26451.71730.982.51440.3010.0660.5900.9734.1881.8480.4221.0455 Mpa 1.5694860.454189.31 g/kWh140 kW191 CP278 NmCalcul indicilor efectivi0.720.7528 Mpa0.327263 g/kWh101 kW137 CP200 Nm43.3 kW/l428.8 Nm/l31.8 kW/dm202468100 90 180 270 360 450 540 630 720p[MPa] alfa[RAC] Diagrama presiunii in functie de alfa c nP[rpm] Pe[kw] nM[rpm] Me[Nm] Vs[cmc] PL[kW/l] ML[Nm/l]18.5 4000 92 1500 280 608.01 37.83 115.1318.5 4400 55 1800 165 458.90 29.96 89.8918.5 4300 74 1700 205 534.38 34.62 95.9019 4000 78 1900 250 569.46 34.24 109.7519.5 4000 51 2200 155 569.46 29.85 90.7319.5 4000 60 2200 195 569.46 35.12 114.1419 4000 77 1900 250 569.46 33.80 109.759.5 6900 101.06 3020 200.21 466.95 43.28 428.76solutia mea050100150200250300350400450500Momentul litric SkodaOctavia 1,9SkodaFabia 1,4SokaRoomsterSeat Altea solutia meaPuterea raportata la aria pistonului 01234567890 100 200 300 400 500 600p[Mpa] V[cmc] Diagrama presiunii in fuctie de volum PA[kW/dm^2]31.7823.6729.0827.2223.7327.9226.8731.84Pmax= 101 kW n[rot/min] n/nP (n/nP) | (n/nP)^2(n/nP)^3Mmax= 200 Nm 1500 0.22 0.24 0.04 -0.01np= 6900 rot/min 1650 0.24 0.27 0.04 -0.01nm= 3020 rot/min 1800 0.26 0.29 0.05 -0.02Ce= 0.438 1950 0.28 0.31 0.06 -0.02Ca= 1.281 2100 0.30 0.34 0.07 -0.03o= 1.11 2250 0.33 0.36 0.08 -0.03|= 0.78 2400 0.35 0.39 0.09 -0.04= -0.89 2550 0.37 0.41 0.11 -0.04Cep= 320 g/kWh 2700 0.39 0.43 0.12 -0.05o+|+= 1.00 2770 0.40 0.45 0.13 -0.062850 0.41 0.46 0.13 -0.063000 0.43 0.48 0.15 -0.073150 0.46 0.51 0.16 -0.083300 0.48 0.53 0.18 -0.103450 0.50 0.56 0.19 -0.113600 0.52 0.58 0.21 -0.133750 0.54 0.60 0.23 -0.143900 0.57 0.63 0.25 -0.1640