Exam 10: Governors and Electronic Control Systems

Which type of governor will be commonly used to control the fueling of a diesel electric generator?

Which of the following is an example of a component where analog data can be collected?

Two technicians are testing maximum engine speed for a mechanical governor. Technician A says that you check the emission decal on the engine or the engine's service literature to find its high-idle speed or rated rpm. Technician B says that the engine should typically reach 10-20% above rated rpm speed with no-load acceleration. Who is right?

While advising a customer about the consequences of increasing maximum engine rpm with an after market software program that alters the engine calibration and increases power output. Technician A says that the engine will produce more smoke. Technician B says the problem with emissions can be corrected by adjusting the air-fuel ratio control. Who is correct?

Which one of the following would likely result if the line that connects mechanical air-fuel ratio control device to the turbocharger compressor outlet were broken?

What is an engine's minimum operational speed?

In a mechanical injection pump, which section of the fuel injection pump is connected to the governor mechanism by the control rack?

Which of the following is NOT an electrical signal commonly used as either inputs and/or outputs in electronic engine control applications?

Which type of governor requires the operator to adjust engine speed when the load that is applied to an engine changes?

What function of electronic governor control system refers to the control system element that collects sensor data and determines outputs based on a set of instructions or program software?

Engine protection is a critical governor programmable setting. Faults that could potentially cause engine damage will cause the governor to do all of these, EXCEPT one. Which one is that?

Which type of governor requires the operator to adjust engine speed when the load that is applied to an engine changes?

Technician A says that any type of governor will work well when pulling heavy loads in off-road conditions without surging and causing driveline damage. Technician B says that an automotive governor is best suited to those operating conditions. Who is correct?

If only throttle linkage were connected in a way that directly controls fuel delivery, such as a control rack inside a high-pressure pump, the slightest movements of the throttle pedal would produce excessively large changes in:

The difference between maximum engine speed with a load applied and a no-load speed is often known as _________.

Technicians A and B are discussing which engine would be best to use to pull tree stumps from some land on a farm. The choice is between two engines in two different medium-duty pickup trucks. Technician A says the engine with a peak torque of 850 ft-lb (1,152 N·m) and 325 horsepower (242 kW) is ideal for pulling stumps. Technician B says the other truck, with an engine with a peak torque of 650 ft-lb (881 N·m) and 400 horsepower (198 kW) is better. Who is correct?

What starts and stops a processing cycle to keep processing functions synchronized inside an ECM?

A manufacturer may have used ____ models to predict optimal actuator output states.

What type of engine emission is controlled by the air-fuel ratio device?

Technician A says that when starting a mechanically governed diesel engine, it is important to push the accelerator pedal to the floor once and then release it. Technician B says the injection pump will automatically go to part throttle when cranking, and so nothing needs to be done. Who is correct?