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Exam 13: Engine Retarders

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Question 1

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What is another way of saying engine braking?

A) service braking
B) engine retarding
C) driveline braking
D) dynamic braking

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Question 2

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When 100% engine braking is required of a Cummins Intebrake on a pre-2010 ISX engine, how many solenoids must be energized?

A) one
B) two
C) three
D) six

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Question 3

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When a Jacobs internal engine compression brake is actuated, at what point is cylinder compression dumped into the exhaust circuit?

When an engine brake is actuated as part of cruise control management, what is the term sometimes used to describe the cruise control system?

What additional feature does a Volvo EPG offer besides engine braking?

Technician A says that most current engine brakes use the engine ECM to manage braking cycles. Technician B says that modern engine brakes can perform the majority of the braking requirements of a transport truck. Who is right?

In a typical electronically controlled diesel engine, what force is used to time the hydraulic opening of the exhaust valves in an internal compression type brake?

Which of the following can be used by the driver to control the cycling of a typical internal engine compression brake?

From where does cylinder gas blowdown occur during a CVT braking cycle?

Technician A says that an advantage of Cummins Intebrake on a pre-2010 ISX engine is progressive retarding that options engine braking from one through all six engine cylinders. Technician B says that on this engine, Intebrake manages braking using both of its overhead camshafts. Who is right?

When an internal engine compression brake is actuated, what role does the engine play?

Which of the following terms describes an engine brake in which both upward strokes of the engine pistons are retarding strokes?

What force is used to open the exhaust valves on a typical internal engine compression brake?

Technician A says that most current highway diesel engines use the engine ECM to master control of engine braking cycles. Technician B says that some current trucks option engine braking as part of cruise control and directional stability management. Who is correct?

When an engine brake is actuated on a current truck diesel engine, what is the maximum fueling permitted?

Which of the following types of engine brake uses hydraulic retarding?

What feature allows some current engine retarders to absorb more horsepower than the engine power specification?

Which of the following describes a brake in which the retarding force is the upstroke of the engine piston on its compression stroke?

When is the braking efficiency of any engine brake usually at its highest?

For a truck driver to actuate an electromechanically-managed internal engine compression brake, all of the following switches would have to be closed EXCEPT: