Scribd
Upload
70 views1 page

Retarding Performance: Gross Weight

This document contains two graphs that compare the performance of a machine with just an automatic retarder (ARC) versus with both an automatic retarder and engine brake on a 450m and 600m long grade. The y-axis of the graphs show gross weight in tons and the x-axis shows speed in km/h. The graphs illustrate that on longer grades, the combination of ARC and engine brake allows the machine to operate at a higher gross weight and speed compared to just the ARC alone.

Uploaded by

Pedro
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
70 views1 page

Retarding Performance: Gross Weight

This document contains two graphs that compare the performance of a machine with just an automatic retarder (ARC) versus with both an automatic retarder and engine brake on a 450m and 600m long grade. The y-axis of the graphs show gross weight in tons and the x-axis shows speed in km/h. The graphs illustrate that on longer grades, the combination of ARC and engine brake allows the machine to operate at a higher gross weight and speed compared to just the ARC alone.

Uploaded by

Pedro
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 1

Retarding Performance

With ARC Only


ARC and Engine Brake
E – Typical Field Empty Weight Gross Weight
L – Target Gross Machine Operating 0 50 100 150 200 250 300 350 400 450 500 lb x 1000
Weight 163 293 kg (360,000 lb)
0 30 60 90 120 150 180 210 240 kg x 1000
30%

(Grade Minus Rolling Resistance)


25%

E L
1st Gear 20%

Effective Grade
2nd Gear
15%
3rd Gear
4th Gear
5th Gear 10%
6th Gear
7th Gear
5%

0 10 20 30 40 50 60 70 80 km/h

0 5 10 15 20 25 30 35 40 45 50 mph
Speed
Grade Distance — 450 m (1,500 ft.)

With ARC Only


ARC and Engine Brake
E – Typical Field Empty Weight Gross Weight
L – Target Gross Machine Operating 0 50 100 150 200 250 300 350 400 450 500 lb x 1000
Weight 163 293 kg (360,000 lb)
0 30 60 90 120 150 180 210 240 kg x 1000
30%
(Grade Minus Rolling Resistance)

25%
E L
20%
1st Gear
Effective Grade

2nd Gear
15%
3rd Gear
4th Gear
10%
5th Gear
6th Gear
7th Gear
5%

0 10 20 30 40 50 60 70 80 km/h

0 5 10 15 20 25 30 35 40 45 50 mph
Speed
Grade Distance — 600 m (2,000 ft.)

24 777F Off-Highway Truck specifications

You might also like