TB 048 - Engine Brake "Jake Brake"

Question 1

What are the advantages of a Jake Brake?

Answer 1

Increased
-performance
-safety
-versatility
-cost-effectiveness

Question 2

Significant reduction in ______ can be anticipated through the proper training and use of “Jake Brake”

Answer 2

Brake wear

Question 3

The Jacobs Engine Brake is a hydraulic engine attachment that, when energized, alters the engine exhaust valve operation which converts the diesel engine into an _________

Answer 3

Air compressor

Question 4

How quickly will the Jacobs Engine Brake activate or deactivate?

Answer 4

Less than 1/4 of a second

Question 5

Use of the Jake Brake on freeway or similar open road should be dictated by _______ and the operator’s _______

Answer 5

1. traffic conditions

2.Good judgement

Question 6

When should the Jake Brake not be engaged?

Answer 6

1. Wet roads
2. Pumping or aerial operations
3. When upshifting
4. At idle or low engine speed

Question 7

The jake brake effect is accomplished by prematurely opening the exhaust valves near the top of the ____ stroke releasing the compression pressure to exhaust.

Answer 7

Compression stroke