WorksheetsDSL-202 Chap 18: Governors
Total questions: 20
Worksheet time: 10mins
What happens during governor cut-off?
Road speed is reduced
Turbo waste gates
Fuel supply is shut off
Engine derates
Technician A says all governors will maintain idle speed to prevent stalling. Technician B says electronic governors can provide additional features except for cruise control. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
Air-fuel ratios less than __________ will produce smoke.
100:1
150:1
200:1
250:1
Which of the following statements about torque is NOT correct?
Torque is a twisting force exerted by the crankshaft of an engine
Torque is the force that moves the vehicle or equipment load.
Motion is necessary to produce torque.
It is helpful to understand that an engine produces virtually no torque at idle or high idle.
Technician A says the sophistication of software-controlled governing on electronic engines has allowed the term governor to fall into disuse. Technician B says that now governors operate invisibly using electronic signal processing strategies, and its operation is programmable. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
The rated speed is the RPM at which the most ___________ is produced in a diesel engine.
Horsepower
Torque
RPM
Speed drop
When having a discussion concerning hunting; Technician A says hunting refers to the rhythmic change in engine idle speed often caused by balanced fuel delivery to all engine cylinders. Technician B says both electronically and mechanically governed engines can hunt under a variety of operating conditions. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
The best diesel engine fuel economy is obtained when in a(n) __________ mode
Overdrive
Direct drive
Underdrive
Lugging
Which governor component adjusts to increase fuel delivery?
Governor spring
Gear segment
Flyweights
Return spring
How would you best describe the condition of flyweight force equaling spring force?
Idle
Rated speed
Balanced
Lugging
Which type of governor traditionally promotes better fuel economy?
Automotive
Variable
Partial authority
Mechanical
Technician A says the governor is located at the front of an inline injection pump. Technician B says the governor changes fueling because it is connected to the injection pump through linkage to control fueling. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
Technician A says that as the engine speeds up, the flyweights will move out and operate to decrease engine fueling. Technician B says it is helpful to remember that flyweight force always operates to reduce fueling and spring force operates to increase fueling. Who is correct?
Technician A
Technician B
Both Technician A and Technician B
Neither Technician A nor Technician B
Which type of mechanical governor would be best suited for on-highway and power take off modes?
Automotive
Combination
Isochronous
Variable
What type of force acts on a mechanical governor?
Tensile
Compressional
Centrifugal
Clamping
A diesel engine with a mechanical governor is not able to reach high idle. What could be the cause?
Weak governor spring
Failed segment gear
Failed delivery valve
None of these is correct
Engine protection parameters perform the following except __________.
Derate the engine
Downshift transmission
Warn the operator
Shut the engine off
Generally, when the red engine warning lamp is illuminated, the engine will shut down within __________ seconds.
60
10
20
30
The purpose of the throttle break over is to __________.
Prevent throttle shaft and bushing wear
Prevent over revving of the engine
Provide the operator with better throttle control
All of these are correct.
How many settings are adjustable within the engine protection parameter set?
1
2
3
4
