Exam 13: Engine Retarders

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

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

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

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

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?

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?

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

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

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?

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?

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

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

What is another way of saying engine braking?

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

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?

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

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

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

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