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Engine Fuel And Emissions

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1.
1 point
Which of the following is NOT true about indirect injection
2.
1 point
On a standard J1939 datalink connector which terminal assignment represents J1939 CAN hi or positive?
3.
1 point
What would blue smoke coming out of the tailpipe indicate?
4.
1 point
which of the following fuel subsystem components would be subjected to charging pressure?
5.
1 point
Which two compounds are necessary for the formation of photochemical smog?
6.
1 point
which of the following is a common toggle option in the software of an electronically managed diesel engine?
7.
1 point
If the main governor spring in a mechanical governor was worn out, what would be the likely performance symptom?
8.
1 point
In indirect injection, In order to more completely burn the fuel, diesel combustion chambers are designed to create air turbulance
9.
1 point
What state is fuel sourced particulate matter in as it exits the tailpipe?
10.
1 point
What do most mechanical governors on truck engines use to sense engine speed?
11.
1 point
Why does retarding the injection timing tend to produce higher HC emissions?
12.
1 point
What accounts for the response delay of EHI nozzles using a solenoid actuators compared with those using piezo actuators?
13.
1 point
Maximum sulfur content in diesel fuel classified as ultralow sulfur is
14.
1 point
What type of device is used as a coolant temp sensor on a typical truck engine management system?
15.
1 point
Which of the following sensors would least likely be used in a current fuel substem?
16.
1 point
The specific control of injected fuel quantity in a diesel engine is known as
17.
1 point
What is another way of saying popping pressure?
18.
1 point
What two principles are used by most fuel water separators to remove water from fuel?
19.
1 point
What is the usual sensor reference voltage in truck engine management systems?
20.
1 point
What is the reason for advancing injection timing as engine speed increases?
21.
1 point
In which of the following engine locations would ignition typically take place?
22.
1 point
If injector valve to nozzle body clearance in a multi orifii injector is greater than specification, which of the following values would increase?
23.
1 point
When a multi orifii injector nozzle is close, what seals the nozzle assembly from the engine cylinder?
24.
1 point
What geometric relationship between the sectional area of the nozzle seat, and that of the nozzle pressure chamber known as?
25.
1 point
When priming a new secondary filter, which method do most OEMs perfer you use?
26.
1 point
In a fleet operation, when should truck drivers be instructed to refill the fuel tanks?
27.
1 point
In a typical fuel subsystem, which of the following is capable of entrapping the smallest particles suspended in the fuel?
28.
1 point
Which of the following customer data programming options could be descrived as toggle options?
29.
1 point
Summer grade diesel fuel would normally
30.
1 point
A plugged primary fuel filter will cause high restriction at the fuel pump inlet
31.
1 point
Which is the maximum sulfur content permitted in diesel fuel approved for use on North American highways?
32.
1 point
In a typical multi-orifii , hydraulic injector, what force holds the nozzle valve on its seat?
33.
1 point
What tow factors define the droplet sizing emitted from a diesel fuel injector?
34.
1 point
Primary filters are tested for inlet restriction measured in inches of mercury
35.
1 point
When a pintle type nozzle is found on a current diesel engine systems, which of the following would correctly describe its function?
36.
1 point
What would double gasketing of a primary fuel filter most likely cause?
37.
1 point
On a standard J1939/1708 datalink connector which terminal assignment represents J1587 dominant high or positive? ?
38.
1 point
One disadvantage of bio diesel fuel is
39.
1 point
What is the term used to describe the graduated fuel duration that takes place between rated speed rpm and high idle rpm
40.
1 point
Which two engine manufacturers were known for favoring variable speed type governors?
41.
1 point
What device is used to sense the presence of water within a fuel filter and alert the driver?
42.
1 point
When accessing a truck chassis data bus, which acronym is used to indicate each vehicle system controller with an address on the data bus?
43.
1 point
What would grayish/white smoke coming out of the tailpipe indicate?
44.
1 point
Which of the following fuel subsystem components would typically be located closest to the fuel tank?
45.
1 point
Secondary filters are tested for restriction using a pressure gauge PSI
46.
1 point
What type of injector nozzles are used with todays direct injected engines?
47.
1 point
Which of the following acronyms defines the ignition quality of a diesel fuel?
48.
1 point
When fuel condenses on the piston crown during injection, which of the following can result?
49.
1 point
In a typical diesel fuel subsystem, where would the fuel subsystem pressure regulating valve be located?
50.
1 point
Which of the following acronyms is another way of saying main memory?
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