Dinamicki Proracun Motora SUS

DINAMIČKI PRORAČUN MOTORA SUS

ULAZNI PODACI

Prečnik klipa D[mm] 80Masa klipne grupe mkg[kg] 0.6Masa klipnjače mks 0.55Broj obrtaja n[o/min] 3000Glavna kinematska karakteristika motornog mehanizma λ 0.27Neuravnotežena masa kolenastog vratila mkv´[kg] 1.2Poluprecnik kolenastog vratila r[m] 0.1(NAPOMENA:Dinamicki proracun se odnosi na 4-taktni motor sa 4 cilindra.Izvrsiti unos svojih vrednosti)

1.AKTIVNA SILA PRITISKA GASOVA:

Gde je:

2.INERCIJALNE SILE:

2.1.Mase delova motornog mehanizma:

Gde je:

Ak[m^2]-površina poprečnog preseka klipa

pg[Pa]-pritisak gasa u cilindru

pk[Pa]-pritisak ispod klipa,u kućištuD[m]-prečnik klipa

mo[kg]-masa delova koja vrši pravolinijsko oscilatorno kretanje

Fg=Ak·(pg-pk)

Ak=D^2π/4

mo=mkg+mkc´

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Izvrsiti unos potrebnih vrednosti

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(NAPOMENA:*Masa kjipnjače se pri proračunu inercijalnih sila,redukuje na osovinicu klipa i na leteći rukavac kolenastog vratila,

tako sto se na osovinicu klipa redukuje 1/3 mase klipnjače,dok se na leteći rukavac redukuje 2/3 mase klipnjače)

Gde je:

Gde je:

2.2.Sila inercije pravolinijski oscilatornih masa:

2.3.Sila inercije rotacionih masa:

3.REZULTUJUĆA SILA KOJA DELUJE NA ČELO KLIPA:

4.NORMALNA SILA:

mkg[kg]-masa klipne grupe

*mkc´ -redukovana masa klipnjače na osovinicu klipa

mr[kg]-masa delova koji vrše rotaciono kretanje

mkv´[kg]-neuravnotežena masa kolenastog vratila

mks-masa klipnjače

mks´-redukovana masa klipnjače na osovinicu klipa

mks´´-redukovana masa klipnjače na leteći rukavac

mks´= mks/3mks´´= 2·mks/3

Fio=-mo·r·ω2·cosα- mo·r·ω2·λ· cos2α

mr= mks´´+ mkv´

Fir= mr·r·ω2

Fr= Fg+ Fio

FN= Fr·tgβ

Gde je:β-ugao između ose klipa i klipnjače

5.SILA U KLIPNJAČI:

6.TANGENCIJALNA SILA:

7.RADIJALNA SILA:

8.TABELA

FN= Fr·tgβ

FK= Fr/cosβ

FT= Fr·sin(α+β)/cosβ

FR=Fr·cos(α+β)/cosβ

sinβ=λ·sinα

ugao KVp [MPa]Fg[kN] Fio[kN]Fir[kN] Fr[kN] beta[rad] Fk[kN] Fn[daN]0 0.120 0.100 -10.785 3.615 -10.684 0.000 -10.684 0.000

10 0.080 -0.100 -10.483 3.615 -10.583 0.047 -10.595 -0.49720 0.080 -0.100 -9.603 3.615 -9.703 0.092 -9.745 -0.90030 0.080 -0.100 -8.219 3.615 -8.320 0.135 -8.397 -1.13440 0.080 -0.100 -6.448 3.615 -6.549 0.174 -6.649 -1.15450 0.080 -0.100 -4.433 3.615 -4.533 0.208 -4.634 -0.95860 0.080 -0.100 -2.331 3.615 -2.431 0.236 -2.501 -0.58570 0.080 -0.100 -0.296 3.615 -0.397 0.257 -0.410 -0.10480 0.080 -0.100 1.536 3.615 1.435 0.269 1.489 0.39690 0.080 -0.100 3.061 3.615 2.961 0.273 3.075 0.830

100 0.080 -0.100 4.218 3.615 4.117 0.269 4.271 1.136110 0.080 -0.100 4.987 3.615 4.886 0.257 5.052 1.282120 0.080 -0.100 5.392 3.615 5.292 0.236 5.443 1.273130 0.080 -0.100 5.496 3.615 5.396 0.208 5.515 1.141140 0.080 -0.100 5.385 3.615 5.284 0.174 5.366 0.931150 0.080 -0.100 5.158 3.615 5.057 0.135 5.104 0.689160 0.080 -0.100 4.912 3.615 4.812 0.092 4.833 0.446170 0.080 -0.100 4.729 3.615 4.629 0.047 4.634 0.217180 0.080 -0.100 4.662 3.615 4.561 0.000 4.561 0.000190 0.080 -0.100 4.729 3.615 4.629 -0.047 4.634 -0.217200 0.090 -0.050 4.912 3.615 4.862 -0.092 4.883 -0.451210 0.110 0.050 5.158 3.615 5.208 -0.135 5.256 -0.710220 0.120 0.100 5.385 3.615 5.485 -0.174 5.570 -0.967230 0.120 0.100 5.496 3.615 5.597 -0.208 5.720 -1.183240 0.140 0.201 5.392 3.615 5.593 -0.236 5.753 -1.345250 0.140 0.201 4.987 3.615 5.188 -0.257 5.363 -1.361260 0.150 0.251 4.218 3.615 4.469 -0.269 4.636 -1.233270 0.160 0.301 3.061 3.615 3.363 -0.273 3.493 -0.943280 0.180 0.402 1.536 3.615 1.938 -0.269 2.010 -0.534290 0.220 0.603 -0.296 3.615 0.307 -0.257 0.317 -0.080300 0.280 0.904 -2.331 3.615 -1.427 -0.236 -1.467 0.343310 0.360 1.306 -4.433 3.615 -3.127 -0.208 -3.196 0.661320 0.460 1.809 -6.448 3.615 -4.639 -0.174 -4.711 0.818

330 0.680 2.914 -8.219 3.615 -5.305 -0.135 -5.354 0.723340 0.940 4.220 -9.603 3.615 -5.383 -0.092 -5.406 0.499350 1.680 7.938 -10.483 3.615 -2.545 -0.047 -2.548 0.119360 5.400 26.627 -10.785 3.615 15.842 0.000 15.842 0.000370 5.160 25.421 -10.483 3.615 14.939 0.047 14.955 0.701380 3.140 15.273 -9.603 3.615 5.670 0.092 5.695 0.526390 2.160 10.349 -8.219 3.615 2.130 0.135 2.150 0.290400 1.600 7.536 -6.448 3.615 1.088 0.174 1.105 0.192410 1.320 6.129 -4.433 3.615 1.696 0.208 1.734 0.359420 1.080 4.924 -2.331 3.615 2.593 0.236 2.666 0.623430 0.920 4.120 -0.296 3.615 3.823 0.257 3.953 1.003440 0.800 3.517 1.536 3.615 5.052 0.269 5.241 1.394450 0.680 2.914 3.061 3.615 5.975 0.273 6.206 1.676460 0.600 2.512 4.218 3.615 6.730 0.269 6.981 1.856470 0.580 2.412 4.987 3.615 7.398 0.257 7.649 1.941480 0.480 1.909 5.392 3.615 7.301 0.236 7.510 1.756490 0.440 1.708 5.496 3.615 7.204 0.208 7.363 1.523500 0.400 1.507 5.385 3.615 6.892 0.174 6.998 1.215510 0.360 1.306 5.158 3.615 6.464 0.135 6.524 0.881520 0.340 1.206 4.912 3.615 6.118 0.092 6.144 0.567530 0.300 1.005 4.729 3.615 5.734 0.047 5.740 0.269540 0.200 0.502 4.662 3.615 5.164 0.000 5.164 0.000550 0.140 0.201 4.729 3.615 4.930 -0.047 4.936 -0.231560 0.140 0.201 4.912 3.615 5.113 -0.092 5.135 -0.474570 0.130 0.151 5.158 3.615 5.309 -0.135 5.358 -0.723580 0.130 0.151 5.385 3.615 5.536 -0.174 5.621 -0.976590 0.130 0.151 5.496 3.615 5.647 -0.208 5.772 -1.194600 0.120 0.100 5.392 3.615 5.493 -0.236 5.649 -1.321610 0.120 0.100 4.987 3.615 5.087 -0.257 5.259 -1.334620 0.120 0.100 4.218 3.615 4.318 -0.269 4.480 -1.191630 0.120 0.100 3.061 3.615 3.162 -0.273 3.284 -0.887640 0.120 0.100 1.536 3.615 1.636 -0.269 1.697 -0.451650 0.120 0.100 -0.296 3.615 -0.196 -0.257 -0.203 0.051660 0.120 0.100 -2.331 3.615 -2.230 -0.236 -2.294 0.536670 0.120 0.100 -4.433 3.615 -4.332 -0.208 -4.428 0.916

680 0.120 0.100 -6.448 3.615 -6.348 -0.174 -6.445 1.119690 0.120 0.100 -8.219 3.615 -8.119 -0.135 -8.194 1.106700 0.120 0.100 -9.603 3.615 -9.502 -0.092 -9.543 0.881710 0.120 0.100 -10.483 3.615 -10.382 -0.047 -10.394 0.487720 0.120 0.100 -10.785 3.615 -10.684 0.000 -10.684 0.000

FR[daNFt[daN]Ftu[daN]-10.684 0.000 0.000-10.336 -2.327 -0.260-8.810 -4.164 -4.273-6.638 -5.142 -7.843-4.275 -5.093 -9.843-2.180 -4.089 -9.644-0.709 -2.398 -8.109-0.038 -0.409 -5.206-0.141 1.482 -1.533-0.830 2.961 2.412-1.833 3.858 6.472-2.876 4.153 10.328-3.748 3.947 12.999-4.342 3.400 14.667-4.647 2.683 14.729-4.724 1.932 12.697-4.674 1.226 9.174-4.596 0.590 4.163-4.561 0.000 0.000-4.596 -0.590 -0.260-4.723 -1.239 -4.273-4.865 -1.990 -7.843-4.823 -2.785 -9.843-4.504 -3.527 -9.644-3.962 -4.171 -8.109-3.053 -4.409 -5.206-1.990 -4.187 -1.533-0.943 -3.363 2.412-0.190 -2.001 6.4720.029 -0.316 10.328-0.416 1.407 12.999-1.503 2.820 14.667-3.028 3.608 14.729

-4.233 3.279 12.697-4.887 2.310 9.174-2.485 0.560 4.16315.842 0.000 0.00014.590 3.285 -0.2605.148 2.433 -4.2731.700 1.316 -7.8430.710 0.846 -9.8430.816 1.530 -9.6440.756 2.557 -8.1090.365 3.936 -5.206-0.495 5.218 -1.533-1.676 5.975 2.412-2.997 6.305 6.472-4.354 6.288 10.328-5.171 5.445 12.999-5.797 4.540 14.667-6.060 3.500 14.729-6.038 2.469 12.697-5.943 1.559 9.174-5.694 0.731 4.163-5.164 0.000 0.000-4.895 -0.628 -0.260-4.967 -1.303 -4.273-4.959 -2.028 -7.843-4.868 -2.811 -9.843-4.544 -3.558 -9.644-3.890 -4.096 -8.109-2.994 -4.324 -5.206-1.923 -4.046 -1.533-0.887 -3.162 2.412-0.160 -1.690 6.472-0.019 0.202 10.328-0.651 2.200 12.999-2.083 3.908 14.667

-4.143 4.937 14.729-6.478 5.017 12.697-8.628 4.078 9.174

-10.140 2.283 4.163-10.684 0.000 0.000

0 180 360 540 7200

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PROMENA PRITISKA

p [MPa]

ugao KV

p[M

Pa

]

0 180 360 540 720

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SILA NA KLIPU

Fg[kN] Fio[kN] Fr[kN]

0 180 360 540 720

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NORMALNA SILA I SILA NA KLIPNJACI

Fk[kN] Fn[daN]

0 180 360 540 720

-15

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RADIJALNA I TANGENCIJALNA SILA

FR[daN] Ft[daN]

0 180 360 540 720

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UKUPNA TANGENCIJALNA SILA

Ftu[daN]

Dinamicki Proracun Motora SUS

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