1
P max – Puterea maxima n P – turatia la puterea maxima M max – Momentul maxim n M – turatia la momentul maxim n max – turatia maxima f – coeficient de rezistenta la rulare α max – ungiul de inclinare maxima n vmax – turatia la viteza maxima k – numarul de trepte in cutia de viteza v max – viteza maxima r d – raza dinamica η t – randamentul total P M M max n M 30 v crI t P M G a 10 max r d n M max fcos max sin max P C e n M n P C a 1.5 0.5 C e 0 2 10 3 4 10 3 6 10 3 0 100 200 Turatia motorului, [rot/min] V i t ez a au t ov e h ic u y j x1 y k 1 x2 y k x2 z j x3 z1 j1x4 yf ym yp yfm ylim v max k 1 x1 x2 x2 x3 x4 n min n M n P n max n lim x6 v max 213.639876 n lim r d C e 2 C a 2 C e 1 C e 1 2 2 C e C a 1 C e 1 2 C a 1 C e 1 2 2 2 C e 2 3 C e C a C e 1 2 2 3 2 C a C e 2 C e 1 2 2 2 C e C a C e 1 2 P i P max n i n P n i n P 2 n i n P 3 n i n med if P max 2 n i n P 2 n i n P 2 2 n i n P 3 n i n med if P R i t P i 1 10 3 2 10 3 3 10 3 4 10 3 5 10 3 6 10 3 0 20 40 Turatia motorului (ni) [rot/m Puterea motorului (Pi); Puterea la P i P R i n i v max j 0.377 n P r d i t j j k 1 if 0.377 n max r d i t j j k 2 if v min j 0.377 n min r d i t j j 2 if 0.377 n M r d i t j j 1 if i o r d n vmax 30 v max 3.6 a ma i cvI r d n M 30 i o v crI Rapoartele de t i cv j k 2 i cvI k 1 j i t j i o i cv j v ij 0.377 n i r d i t j P js P max v js i t j 0.377 r d n P v js i t j 0.377 r d n P 2 v js i t j 0.377 r d n P 3 v js v med j if P max 2 v js i t j 0.377 r d n P 2 v js i t j 0.377 r d n P 2 2 v js i t j 0.377 r d n P 3 v js v med j if P Rv js t P js 0 100 200 10 20 30 40 50 P Rv 1 s P Rv 2 s P Rv 3 s P Rv 4 s P Rv 5 s P1 s P2 s P3 s P4 s P5 s v1 s v2 s v3 s v4 s v5 s v1 s v2 s v3 s v4 s v5 s M i M P n i n P n i n P 2 M R ij M i i t j t 1 10 3 2 10 3 3 10 3 4 10 3 5 10 3 6 10 3 8 9 10 11 12 13 M i n i 1 10 3 2 10 3 3 10 3 4 10 3 5 10 3 6 10 3 20 40 60 80 M R i1 M R i2 M R i3 M R i4 M R i5 n i M Rv js 955.4 0.377 P Rv js r d v js 0 50 100 150 200 20 30 40 50 60 70 80 M Rv 1 s M Rv 2 s M Rv 3 s M Rv 4 s M Rv 5 s v 1 s v 2 s v 3 s v 4 s v 5 s alculul fortel X ij M R ij r d Xn js M Rv js r d 1 10 3 2 10 3 3 10 3 4 10 3 5 10 3 6 10 3 0 100 200 300 X i1 X i2 X i3 X i4 X i5 n i 0 50 100 150 200 100 150 200 250 300 Xn 1 s Xn 2 s Xn 3 s Xn 4 s Xn 5 s v 1 s v 2 s v 3 s v 4 s v 5 s ij X ij G ad v js Xn js G ad 1 10 3 2 10 3 3 10 3 4 10 3 5 10 3 6 10 3 0.1 0.2 0.3 0.4 0.5 0.6 0.7 i1 i2 i3 i4 i5 i6 n i

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PowerPoint bemutat

Pmax Puterea maxima

nP turatia la puterea maxima

Mmax Momentul maxim

nM turatia la momentul maxim

nmax turatia maxima

f coeficient de rezistenta la rulare

max ungiul de inclinare maxima

nvmax turatia la viteza maxima

k numarul de trepte in cutia de viteza

vmax viteza maxima

rd raza dinamica

t randamentul total

P

M

M

max

p

n

M

(

)

30

:=

P

R

i

h

t

P

i

:=

1

10

3

2

10

3

3

10

3

4

10

3

5

10

3

6

10

3

0

20

40

Turatia motorului (ni) [rot/min]

Puterea motorului (Pi); Puterea la roata (Pr) [kW]

P

i

P

R

i

n

i

v

max

j

0.377

n

P

r

d

i

t

j

j

k

1

-

if

:=

v

min

j

0.377

n

min

r

d

i

t

j

j

2

if

:=

j

1

k

..

:=

i

o

p

r

d

n

vmax

(

)

30

v

max

3.6

:=

v

crI

h

t

P

M

(

)

G

a

10

y

max

:=

i

cvI

p

r

d

n

M

(

)

30

i

o

v

crI

:=

Rapoartele de transmisie in diferite viteze ale cutiei

de vite

ze

i

cv

j

k

2

-

i

cvI

k

1

-

j

-

:=

i

t

j

i

o

i

cv

j

:=

v

i

j

,

0.377

n

i

r

d

(

)

i

t

j

:=

P

j

s

,

P

max

a

v

j

s

,

i

t

j

0.377

r

d

n

P

b

v

j

s

,

i

t

j

0.377

r

d

n

P

2

+

g

v

j

s

,

i

t

j

0.377

r

d

n

P

3

-

v

j

s

,

v

med

j

if

P

max

a

2

v

j

s

,

i

t

j

0.377

r

d

n

P

b

2

v

j

s

,

i

t

j

0.377

r

d

n

P

2

+

g

2

v

j

s

,

i

t

j

0.377

r

d

n

P

3

-

v

j

s

,

v

med

j

>

if

:=

y

max

f

cos

a

max

(

)

sin

a

max

(

)

+

:=

v

crI

h

t

P

M

(

)

G

a

10

y

max

:=

i

cvI

p

r

d

n

M

(

)

30

i

o

v

crI

:=

P

Rv

j

s

,

h

t

P

j

s

,

:=

0

100

200

10

20

30

40

50

P

Rv

1

s

,

P

Rv

2

s

,

P

Rv

3

s

,

P

Rv

4

s

,

P

Rv

5

s

,

P

1

s

,

P

2

s

,

P

3

s

,

P

4

s

,

P

5

s

,

v

1

s

,

v

2

s

,

,

v

3

s

,

,

v

4

s

,

,

v

5

s

,

,

v

1

s

,

,

v

2

s

,

,

v

3

s

,

,

v

4

s

,

,

v

5

s

,

,

M

i

M

P

a

b

n

i

n

P

+

g

n

i

n

P

2

-

:=

M

R

i

j

,

M

i

i

t

j

h

t

:=

1

10

3

2

10

3

3

10

3

4

10

3

5

10

3

6

10

3

8

9

10

11

12

13

M

i

n

i

1

10

3

2

10

3

3

10

3

4

10

3

5

10

3

6

10

3

20

40

60

80

M

R

i

1

,

M

R

i

2

,

M

R

i

3

,

M

R

i

4

,

M

R

i

5

,

n

i

M

Rv

j

s

,

955.4

0.377

P

Rv

j

s

,

r

d

v

j

s

,

:=

0

50

100

150

200

20

30

40

50

60

70

80

M

Rv

1

s

,

M

Rv

2

s

,

M

Rv

3

s

,

M

Rv

4

s

,

M

Rv

5

s

,

v

1

s

,

v

2

s

,

,

v

3

s

,

,

v

4

s

,

,

v

5

s

,

,

Calculul fortelor la rotile motoare

X

i

j

,

M

R

i

j

,

r

d

:=

Xn

j

s

,

M

Rv

j

s

,

r

d

:=

y

max

f

cos

a

max

(

)

sin

a

max

(

)

+

:=

v

crI

h

t

P

M

(

)

G

a

10

y

max

:=

1

10

3

2

10

3

3

10

3

4

10

3

5

10

3

6

10

3

0

100

200

300

X

i

1

,

X

i

2

,

X

i

3

,

X

i

4

,

X

i

5

,

n

i

0

50

100

150

200

100

150

200

250

300

Xn

1

s

,

Xn

2

s

,

Xn

3

s

,

Xn

4

s

,

Xn

5

s

,

v

1

s

,

v

2

s

,

,

v

3

s

,

,

v

4

s

,

,

v

5

s

,

,

j

i

j

,

X

i

j

,

G

ad

:=

j

v

j

s

,

Xn

j

s

,

G

ad

:=

1

10

3

2

10

3

3

10

3

4

10

3

5

10

3

6

10

3

0.1

0.2

0.3

0.4

0.5

0.6

0.7

j

i

1

,

j

i

2

,

j

i

3

,

j

i

4

,

j

i

5

,

j

i

6

,

n

i

C

e

n

M

n

P

:=

C

a

1.5

0.5

C

e

-

:=

0

2

10

3

4

10

3

6

10

3

0

100

200

Turatia motorului, [rot/min]

Viteza autovehiculului, [km/h]

y

j

x1

,

y

k

1

-

x2

,

y

k

x2

,

z

j

x3

,

z1

j1

x4

,

yf

ym

yp

yfm

ylim

v

max

k

1

-

x1

x2

,

x2

,

x3

,

x4

,

n

min

,

n

M

,

n

P

,

n

max

,

n

lim

,

x6

,

v

max

k

213.639876

=

v

max

k

0.377

n

lim

r

d

i

t

k

:=

a

C

e

2

C

a

2

C

e

1

-

(

)

-

C

e

1

-

(

)

2

:=

b

2

C

e

C

a

1

-

(

)

C

e

1

-

(

)

2

:=

g

C

a

1

-

(

)

C

e

1

-

(

)

2

:=

a

2

2

C

e

2

3

C

e

-

C

a

+

(

)

C

e

1

-

(

)

2

:=

b

2

3

2

C

a

-

C

e

2

-

(

)

C

e

1

-

(

)

2

:=

g

2

2

C

e

C

a

+

(

)

-

C

e

1

-

(

)

2

:=

P

i

P

max

a

n

i

n

P

b

n

i

n

P

2

+

g

n

i

n

P

3

-

n

i

n

med

if

P

max

a

2

n

i

n

P

b

2

n

i

n

P

2

+

g

2

n

i

n

P

3

-

n

i

n

med

>

if

:=