Instruksjonsbok Volvo A25D - A30D

Retardation Systems

Retardation Graphs

Retardation G raph A25D

1

Hydraulic R etarder and Exhaust Retarder

NMW

GMW

lb x 1000

kp x 1000

25

4

Max. retarding performance Continuous

50

40%

20

40

30%

15

30

20%

10

20

10%

5

10

0

0

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 2 30 4 50

km/h

kg x 1000

40 60 80

100

0

5

10

15

20

25

30

35

mph

lb x 1000

2

3

Retardation G raph A30D Hydraulic R etarder and Exhaust Retarder

4

1

NMW

GMW

lb x 1000

kp x 1000

25

40%

Max. retarding performance Continuous

50

20

30%

40

15

30

20%

10

20

10%

5

10

0

0

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 30 4 50 6 2

km/h

kg x 1000

0

5

10

15

20

25

30

35

40 60 80

100

120

mph

lb x 1000

2

3

INSTRUCTIONS Diagonal lines represent the “total resistance” (here in downhill grades it is the total extra pushing force), which is the grade in % minus the rolling resistance in %. Charts based on 0% rolling resistance, standard tires and gearing, unless otherwise stated. A. Find the diagonal line with the appropriate total resistance on the right edge of the chart. B. Follow the diagonal line downward until it intersects the actual line for machine weight, NMW or GMW. C. Draw a new line horizontally to the left from the point of intersection until the new line intersects the rimpull or retardation curve. D. Read down for vehicle speed.

RETARDATION 1 Brake force in kp lbf 2 Speed in km/h mph 3 Machine weight in kg lbs 4 Grade in % + rolling resis- tance in %.

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