A governor that has highly controlled speed droop is known as a(n) _____________ governor:
On an engine equipped with a mechanical diesel fuel system, when an operator moves the throttle through the speed ranges, he is altering the governor''s
On a fuel injection pump utilizing the port and helix system, what are the positions of the control edge of the helix for the fuel delivery volume?
On an in-line fuel injection pump utilizing the port and helix system, what tries to maintain system line pressure for a rapid rise and fall of injection pressures?
Technician A says that a limiting speed governor attempts to keep the engine RPM at a nearly constant rate even though the load on the engine may change. Technician B says that a limiting speed governor will control minimum and maximum engine RPM. Who is correct?
What controls the maximum pressure in a high pressure injector fuel line?
When a technician adjusts all the plungers so that they repeatedly produce the exact quantity of fuel, he is said to be ___________ the fuel pump.
On a port and helix fuel pump, when the rack rotates the plunger so that the vertical groove is aligned with the fill port, the pump is said to be in the:
On a port and helix fuel pump system, when the rack rotates the plunger so that the narrowest part of the helix is aligned with the fill/spill ports, the pump is said to be in the:
Injection nozzles that open with the needle valve moving away from the combustion chamber are said to be:
When working with injection nozzles, you should:
When bench testing a set of high pressure injection nozzles, Technician A says that when checking injection nozzles you should check the cracking pressures and forward leakage. Technician B says that you should check the spray pattern and back leakage. Who is correct?
A high pressure fuel injection pump that uses a rack to move a fuel volume control device up and down on the outside of the injection plunger and barrel is known as a _______________ type fuel pump.
If the device mentioned in the previous question were to be moved all the way up, the fuel pump would be in the ______________ position.
A mechanical governor operates on the principle of:
When spill timing a fuel injection pump using the port closing method you would be dealing with a pump having helices with:
When mounting a fuel injection pump to an engine and adjusting the fuel pump drive so that pins will enter their respective holes in the flywheel and fuel pump, you are said to be ______________ the fuel pump to the engine.
On a diesel injected engine, if a delivery valve does not seat properly, the engine would:
Technician A says that a fuel injection pump with port and helix system uses a mechanical actuated injector. Technician B says that a distributor type fuel system uses a hydraulically actuated injector. Who is correct?
What will occur if the cracking pressure in a high pressure nozzle is too low?
The most common injection nozzle used with direct injection is the:
The amount of RPM fluctuation from maximum RPM no load to maximum RPM full load is known as:
A fuel pressure gauge test on an engine may indicate:
On a diesel fuel system, when the governor flyweights extend, they change spring tension to move the rack to a ______________ fuel position.
On a fuel injection pump system, what is the purpose of the restricted fitting in the return fuel line at the outlet of the fuel pump?
Which fuel injector type is used by Detroit 2 cycle diesels and Cummins PT injection systems and others?
Injector timing is done on a Detroit Diesel unit injectors by:
What is the purpose of a buffer spring in an engine governor?
What will be the effect if injector plungers are set higher than specifications in a Detroit Diesel 2 cycle engine?
Technician A says that a Bosch and a Detroit fuel system use a mechanical type injector. Technician B says that a Bosch and a Detroit fuel system use a port and helix system. Who is correct?
An operator complains that his engine idle is about 100 RPM more than it was a few days ago, on his Detroit Diesel 8-92 2 cycle engine, what is the likely problem?
Which of the following systems would control the volume for fuel injections by modifying and controlling pressures within the low pressure supply system relative to engine rpm?
Technician A says that a Cummins engine operational timing may be adjusted by the use of an offset key on the camshaft. Technician B says that a Cummins engine may be timed by adding or subtracting shims or gaskets from under the cam follower housing covers. Who is correct?
The term hydraulic governor refers to a governor in which the:
On some distributor type fuel systems, timing may be adjusted by:
The metering valve in a cam and plunger distributor type fuel pump controls the amount of _____________ within the pumping element prior to injection.
In a distributor type fuel pump, the cam ring and plungers produce _____________ sent to the injectors.
The governor on a cam and plunger distributor type fuel controls the:
In a cam and plunger distributor type fuel pump, a hydraulically actuated plunger and counter-balancing spring, automatically moves the ________________ back and forth with changing engine speeds, to alter the injection timing advance.
Before removing a fuel injection pump, you must locate the engine and injection pump for timing and position so that the injecton pump can be easily reinstated in the correct position.
To locate a faulty injector on a Cummins PT injection system you should:
When servicing injectors, you should always remember to:
If a back-hoe operator sets the engine at 1500 RPM, and a small load is applied to the engine, the variable speed governor will:
Pintle type fuel injection nozzles are used with:
Caterpillar capsule type injectors are adjusted:
What engine performance measurement is found by using the following formula: Torque x RPM divided by 5252:
A port and helix fuel injection pump using plungers with upper helices would have injection timing with a:
Technician A says that a fuel system must supply the correct quantity of fuel and time the fuel delivery. Technician B says that a fuel system must control the delivery rate and distribute the fuel evenly into the cylinder. Who is correct?
On a test bench, when a technician adjusts a fuel pump so that the beginning of injection event occurs exactly the correct number of degrees apart, he is said to be ________________ the fuel pump.
An automatic timing advance mechanism varies injection timing in relation to:
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