4 aldiko motor baten ardatza engranai kaxa batera iristen da. Irudiak eta hurrengo datuak kontutan izanda erantzun itzazu galdera hauek higidura abiadura edo martxa bakoitzarentzat:
*Gurpilen biraketa abiadura (rad/s)
*Kotxearen abiadura Km/ordu-tan
*Gurpilen ardatzaren momentu eragilea.
Datuak:
Pmax motorra = 110 ZP; Wmotorra = 4500 bira/min; hmekanikoa = %90; Fgurpila = 60 zm; idiferentziala = 1/4
z1 = 25 hortz; z2 = 30 hortz; z3 = 25 hortz; z4 = 30 hortz; z5 = 20 hortz; z6 = 40 hortz;
z7 = 18 hortz; z8 = 60 hortz; z9 = 18 hortz; z10 = 25 hortz; z11 = 64 hortz
P = 110 ZP· 735,5 W/ZP= 80905 W
wmotorra = 4500 bira/min· 2·∏ rad/1bira· 1min/60seg = 471 rad/s
1.MARTXA
w1= 471 rad/s
z1 = 25 hortz
z2 = 30 hortz
z3 = 18 hortz
z4 = 60 hortz
w2/w1=z1/z2
w2 = (z1/z2)· w1 = (25/30) · 471 = 392.5 rad/seg
w3 = (z3/z4)·w2 = (18/60)·392.5 = 117.75 rad/seg
wgurpila= w3·1/4 = 117.75·1/4 = 29.45 rad/seg
abiadura(km/h)
v = w·r = 29.45·0.3 =8.83 m/s = 31.80 km/h
Momentua
η = Pg/Pm, Pg = 0.9·80905 W = 72814.5 W
P = M·w, M=P/w, M = 72814.5/29.45 = 2472.4 N·m
2.MARTXA
w1= 471 rad/s
z1 = 25 hortz
z2 = 30 hortz
z3 = 20 hortz
z4 = 40 hortz
w2/w1=z1/z2
w2 = (z1/z2)· w1 = (25/30) · 471 = 392.5 rad/seg
w3 = (z3/z4)·w2 = (20/40)·392.5 =196.25rad/seg
wgurpila= w3·1/4 = 49.06 rad/seg
abiadura(km/h)
v = w·r = 49.06·0.3 = 14.71 m/s = 52.98 km/h
Momentua
M = 72814.5/49.06= 1484.18 N·m
3.MARTXA
w1= 471 rad/s
z1 = 25 hortz
z2 = 30 hortz
z3 = 25 hortz
z4 = 30 hortz
w2/w1=z1/z2
w2 = (z1/z2)· w1 = (25/30) · 471 = 392.5 rad/seg
w3 = (z3/z4)·w2 = (25/30)·392.5 = 327.08 rad/seg
wgurpila= w3·1/4 = 81.77 rad/seg
abiadura(km/h)
v = w·r = 81.77·0.3 = 24.53 m/s = 88.31 km/h
Momentua
M = 72814.5/81.77 = 824.53 N·m
4.MARTXA
w1= w3 = 471 rad/s
wgurpila= w3·1/4 = 98.12 rad/seg
abiadura(km/h)
v = w·r = 98.12·0.3 = 29.43 m/s = 105.97 km/h
Momentua
ATZERA MARTXA
w1= 471 rad/s
z1 = 25 hortz
z2 = 30 hortz
z3 = 18 hortz
z4 = 25 hortz
z5 = 64 hortz
w2/w1=z1/z2
w2 = (z1/z2)· w1 = (25/30) · 471 = 392.5 rad/seg
w3 = (z3/z4)·(z4/z5)·w2 = (18/25)(25/64)·392.5 = 110.35 rad/seg
wgurpila= w3·1/4 = 27.58 rad/seg
abiadura(km/h)
v = w·r = 27.58·0.3 = 8.27 m/s = 29.78 km/h
Momentua
M = 72814.5/27.58 = 2615.97 N·m