Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Solution Manual For Modern Diesel Technology Light Duty Diesels, 2nd Edition by Sean Benne, Exams of Business Economics

Global UniversityBusiness Economics

Solution Manual For Modern Diesel Technology Light Duty Diesels, 2nd Edition by Sean Bennett Chapter 1-15

Typology: Exams

2024/2025

Available from 06/02/2025

QuizBank
QuizBank 🇺🇸

201 documents

1 / 29

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
SOLUTION MANUAL FOR
MODERN DIESEL TECHNOLOGY LIGHT DUTY DIESELS, 2ND EDITION
SEAN BENNETT
__________________________________________________________
Chapter 1-15
CHAPTER 1
REVIEW QUESTIONS
1. When is a worker more likely to be injured?
A. First day on the job
B. During the first year of employment
C. During the second to fourth years of employment
D. During the year before retirement
2. When lifting a heavy object, which of the following should be true?
A. Keep your back straight while lifting.
B. Keep the weight you are lifting close to your body.
C. Bend your legs and lift using the leg muscles.
D. All of the above.
3. Which of the following best describes the purposes of LOTO?
A. A workplace lottery
B. Vehicle and equipment securement during servicing
C. Certification standards for PPE
D. CVSA safety standards
4. Which of the following is usually a requirement of a safety shoe or boot?
A. UL certification
B. Steel sole shank
C. Steel toe
D. All of the above
5. What type of gloves should never be worn when working with refrigerant?
A. Synthetic rubber
B. Vinyl disposable
C. Leather welding gloves
D. Latex rubber gloves
6. Which of the following is under the most pressure?
A. Oxygen cylinders
B. Acetylene cylinders
C. Diesel fuel tanks
D. Gasoline fuel tanks
7. Which type of fire can usually be safely extinguished with water?
A. Class A
B. Class B
C. Class C
D. Class D
8. When attempting to suppress a Class C fire in a chassis, which of the following is good practice?
A. Disconnect the batteries.
B. Use a carbon dioxide fire extinguisher.
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17
pf18
pf19
pf1a
pf1b
pf1c
pf1d

Partial preview of the text

Download Solution Manual For Modern Diesel Technology Light Duty Diesels, 2nd Edition by Sean Benne and more Exams Business Economics in PDF only on Docsity!

SOLUTION MANUAL FOR

MODERN DIESEL TECHNOLOGY LIGHT DUTY DIESELS, 2ND EDITION

SEAN BENNETT

__________________________________________________________

Chapter 1-

CHAPTER 1

REVIEW QUESTIONS

  1. When is a worker more likely to be injured? A. First day on the job B. During the first year of employment C. During the second to fourth years of employment D. During the year before retirement
  2. When lifting a heavy object, which of the following should be true? A. Keep your back straight while lifting. B. Keep the weight you are lifting close to your body. C. Bend your legs and lift using the leg muscles. D. All of the above.
  3. Which of the following best describes the purposes of LOTO? A. A workplace lottery B. Vehicle and equipment securement during servicing C. Certification standards for PPE D. CVSA safety standards
  4. Which of the following is usually a requirement of a safety shoe or boot? A. UL certification B. Steel sole shank C. Steel toe D. All of the above
  5. What type of gloves should never be worn when working with refrigerant? A. Synthetic rubber B. Vinyl disposable C. Leather welding gloves D. Latex rubber gloves
  6. Which of the following is under the most pressure? A. Oxygen cylinders B. Acetylene cylinders C. Diesel fuel tanks D. Gasoline fuel tanks
  7. Which type of fire can usually be safely extinguished with water? A. Class A B. Class B C. Class C D. Class D
  8. When attempting to suppress a Class C fire in a chassis, which of the following is good practice? A. Disconnect the batteries. B. Use a carbon dioxide fire extinguisher.

C. Avoid inhaling the fumes produced by burning conduit. D. All of the above.

  1. What color is used to indicate the fuel hose in an oxyacetylene station? A. Green B. Red C. Yellow D. Blue
  2. In which direction do you tighten an oxygen cylinder fitting? A. CW B. CCW C. Depends on the manufacturer

CHAPTER 2

REVIEW QUESTIONS

  1. An 8-cylinder diesel engine has a bore of 80 mm and a stroke of 100 mm. Which of the following correctly describes the engine? A. 80 inch displacement B. 10 liter displacement C. Oversquare D. Undersquare
  2. Which of the following best describes the term engine displacement? A. Total piston swept volume B. Mean effective pressure C. Peak horsepower D. Peak torque
  3. Convert the displacement of a Cummins 6.7 liter engine into cubic inches. A. 350 cubic inches B. 409 cubic inches C. 440 cubic inches D. 500 cubic inches
  4. Which of the following engine subsystems plays the larger role in managing engine output? A. Air induction system B. Throttle body circuit C. Fuel system D. Lubrication circuit
  5. What percentage of the potential heat energy of the fuel does the modern diesel engine convert to useful mechanical energy when it is operating at its best efficiency? A. 20 percent B. 40 percent C. 60 percent D. 80 percent
  1. Which of the following best describes MEP during engine operation? A. Combustion pressure acting on a piston B. Compression pressure produced by a piston C. Combustion pressure minus compression pressure acting on a piston. D. Intake pressure minus exhaust pressure in a cylinder
  2. What term is used to specify the ignition temperature of a diesel fuel? A. Cetane number (CN) B. Flash point C. 700 degrees Celsius D. Vaporization temperature

CHAPTER 3

REVIEW QUESTIONS

  1. Where would a Ni-Resist insert be found? A. Upper ring belt, aluminum trunk piston B. Lower ring belt, articulating piston C. Upper ring belt, crosshead piston D. Trunk piston, pin boss
  2. Under which of the following conditions would a piston ring seal most effectively? A. Low engine temps B. High engine temps C. Low cylinder pressures D. High cylinder pressures
  3. Where would you most likely find a slinger? A. Crankshaft main seals B. Piston leading edge C. Oil spray jet D. Big end journal
  4. What should be used to measure rod and main journal bearing clearances? A. Tram gauges B. Dial indicators C. Plastigage D. Snap gauges
  5. Technician A says that an advantage of forged steel trunk pistons is that their weight is equiv a- lent to that of aluminum and they are much tougher. Technician B says that steel trunk pistons are popular in recent engines because they have reduced headland volume. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  6. Technician A says that keystone rings are common in high-performance diesel engines. Technician B says that keystone con rods have a wedge-shaped small end. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  7. Which of the following would be most likely to occur if an engine was run under load with a failed vibration damper? A. Increased fuel consumption B. Increased cylinder blowby

C. Camshaft failure D. Crankshaft failure

  1. What is the upper face of a piston assembly known as? A. Crown B. Skirt C. Boss D. Trunk

B. G

C. YYY

D. P

  1. The location on a cam profile that is exactly opposite the toe is referred to as the: A. Sole B. Nose C. Ramp D. Heel
  2. In which direction must a camshaft be rotated on a diesel engine with a crankshaft that is rotated clockwise? A. Clockwise (CW) only B. Counterclockwise (CCW) only C. Either CW or CCW is OK depending on the engine
  3. Which tool would be required to measure the cam lift of a cylinder block–mounted camshaft in position? A. Dial indicator B. Outside micrometer C. Depth micrometer D. Thickness gauges
  4. A camshaft gear is usually precisely positioned on the camshaft using a(n): A. Dial indicator B. Interference fit C. Key and keyway D. Captured thrust washer
  5. When grinding a valve face to remove pitting, the critical specification to monitor during machin- ing would be the: A. Shank diameter B. Stem C. Poppet diameter D. Margin
  6. Which of the following engine running conditions would be more likely to cause a valve float con- dition? A. Engine lug down B. Engine overspeed C. Operating in the torque rise profile D. Operating in the droop curve
  7. You are about to set the valves over number 2 cylinder on a typical inline four-cylinder engine. Which of the following would likely be true on most engines? A. Valves over number 2 should be rocking. B. Valves over number 3 should be rocking. C. Valves over number 1 should show full lash. D. Valves over number 4 should show full lash.

INTERNET EXERCISES

  1. Use a search engine to check out the QuickWay and Sioux Tools websites. Check out each compa- ny’s valve servicing equipment.
  2. Use a search engine and key in to see what you come up with.
  3. Use the Web to identify valve lash specifications for the intake and exhaust valves of a diesel en- gine of your choosing. Cross check this information with the manufacturer specs if they are availa- ble to you.
  4. Use the Web to identify the forums for one of the Big Three diesels: Ford Power Stroke (3.0 and

6.7), GM Duramax (3.0 and 6.6/6600), or Dodge (Fiat 3.0 and Cummins ISB 6.7). Make a list of the key differences in the cylinder head design and timing geartrains.

  1. Use the Web to research the specification data on the Dodge Cummins ISB inline six-cylinder en- gine versus the V8-configured GM Duramax and Ford Power Stroke engines. Make a note of the differences you identify.

CHAPTER 5

REVIEW QUESTIONS

  1. Which tool should be used to accurately check the inlet restriction of a dry air filter? A. Mercury manometer B. Trouble light C. Negative pressure gauge D. Restriction gauge
  2. Which of the following would be a typical maximum specified inlet restriction for an air filter on a turbocharged diesel? A. 25-inch water (H 2 O) B. 25-inch mercury (Hg) C. 25 psi D. 25 kPa
  3. Which of the following types of filters has the highest filtering efficiencies? A. Centrifugal precleaners B. Oil bath C. Dry, positive
  4. Which of the following should be performed first when checking an engine that produces black smoke under load? A. Injection timing B. Plugged particulate trap C. Fuel chemistry analysis D. Air filter restriction test
  5. Which of the following best describes the function of an EGR system on a diesel engine? A. Increases engine breathing efficiency B. Dilutes intake charge with cooled dead gas C. Preheats the intake charge to the cylinder D. Assists the turbocharger in boosting intake pressure
  6. Which of the following best describes the function of a wastegate in a current turbo-boosted diesel engine? A. Bleeds down intake boost air when excessively high B. Options exhaust gas to bypass the turbine C. Adjusts the volute flow area D. Holds the exhaust valves open when turbo-boost is low boost
  7. What is the critical flow area managed by a VG turbo using a variable vane pitch operating princi- ple? A. Compressor diffuser B. Impeller inlet throat C. Turbine volute D. EGR gate
  8. Technician A says that some turbochargers use a combination of high-flow oil and engine coolant to help manage turbine operating temperatures. Technician B says that some turbochargers use both a wastegate and a variable pitch vane principle to manage gas flow through the turbine. Who is right?
  1. Which of the following components would be located in a diesel exhaust gas aftertreatment canis- ter? A. Diesel particulate filter B. Catalytic converter(s) C. Muffler D. Any or all of the above
  2. Which of the following is a category of sensors that are commonly used to signal charge air cooler (CAC) inlet and outlet temperatures? A. Thermistor B. Hot wire differential C. Piezo-resistive D. Galvanic

INTERNET EXERCISES

Use a search engine and information sites such as Wikipedia and www.howstuffworks.com, and key in the following prompts:

  1. Donaldson air filters
  2. Bosch exhaust aftertreatment devices
  3. Borg Warner/Schwitzer turbochargers
  4. Holset turbochargers
  5. Exhaust gas recirculation
  6. Diesel exhaust fluid (DEF)
  7. Check out Ford Diesel, Duramax Diesel, Detroit Diesel, and Dodge Cummins Diesel.
  8. Research diesel engine power in agricultural and construction applications.

CHAPTER 6

REVIEW QUESTIONS

  1. Which type of diesel engine coolant solution is regarded as potentially the most harmful to hu- mans? A. EG B. PG C. Pure water D. WEC
  2. What causes cooling system hoses on an engine to collapse when the unit is left parked ove r- night? A. This is normal B. Defective thermostat C. Improper coolant D. Defective radiator cap
  3. When a radiator cap pressure valve fails to seal, which of the following is most likely to occur? A. Coolant boil-off B. Cooler operating temperatures C. Higher HC emissions D. Higher CO emissions
  4. In a typical diesel-powered vehicle at operating temperature, which of the following should be

true? A. Coolant temperatures run cooler than lube oil temperatures. B. Coolant temperatures run warmer than lube oil temperatures. C. Coolant temperatures should be equal to lube oil temperatures.

  1. What operating principle is used by a typical diesel engine coolant pump? A. Centrifugal B. Constant volume C. Gear type D. Positive displacement
  2. When an engine thermostat routes the coolant through the bypass circuit, what is happening? A. The coolant is cycled primarily through the radiator. B. The coolant is cycled primarily through the engine. C. The coolant is cycled primarily through auxiliary heat exchangers.
  3. Fans with flexible-pitch blades are designed to drive air at greatest efficiency at: A. All speeds B. High speeds C. Low speeds
  4. In the event of an engine overheating, where is the coolant likely to boil first? A. Engine water jacket B. Top radiator tank C. Inlet to the coolant pump D. Thermostat housing
  5. What instrument do most engine manufacturers consider to be the most accurate for routinely checking the degree of antifreeze protection in a diesel engine coolant? A. Hydrometer B. Refractometer C. Spectrographic analyzer D. Color-coded test coupon
  6. Which of the following API classifications would indicate that the oil was formulated for diesel engines meeting 2017 and later emission standards? A. FA- B. CJ- C. CC D. SF
  7. Which of the following conditions could result from a high crankcase oil level? A. Lube oil aeration B. Oil pressure gauge fluctuations C. Friction bearing damage D. All of the above
  8. A full-flow oil filter has become completely plugged. Which of the following is likely if the engine is running? A. Engine seizure. B. Engine lubrication ceases. C. Oil pump hydraulically locks. D. A bypass valve diverts the oil around the filter.
  9. Oil that has a milky, clouded appearance is probably contaminated with: A. Fuel B. Dust C. Engine coolant D. Air
  10. Which of the following statements correctly describes viscosity? A. Lubricity B. Resistance to flow C. Resistance to shear

A. A diode bridge B. A stator C. An armature D. A voltage regulator

  1. When the term sensing voltage is referred to in alternator operation, which of the following best describes it? A. 5 volts DC B. 5 volts AC C. Battery voltage D. Diode leakage voltage
  2. When an alternator is full fielded, which of the following components is bypassed? A. The stator B. The rotor C. The slip rings D. The voltage regulator
  3. When a carbon pile is used to load the electrical system to test the charging circuit, how much load should be applied? A. Enough to drop system voltage to 12.7 volts B. One-half the CCA rating of the batteries C. The rated amperage specification D. Enough to drop system voltage to 9.6 volts
  4. What is the function of the magnetic switch in a vehicle cranking circuit? A. Regulate current flow through the charging circuit B. Limit overcharging of the batteries C. Switch the starter motor to crank the engine D. Manage the cranking motor voltage
  5. What component prevents a starter motor from being turned by the engine at speeds that could damage the motor? A. Rotor B. Override clutch C. Pinion gear D. Solenoid gear
  6. What is the usual maximum permitted total voltage drop through the insulated side of the starter circuit? A. 0.05 volt B. 0.1 volt C. 0.5 volt D. 1.0 volt
  7. What is the usual maximum permitted total voltage drop through the ground side of the starter circuit? A. 0.05 volt B. 0.1 volt C. 0.5 volt D. 1.0 volt
  8. Technician A says that a starter relay is a magnetic switch. Technician B says that the control cir- cuit in a starter relay conducts the starter motor current load. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  9. Technician A says that series-wound DC starter motors are commonly used on diesel engines. Technician B says that series-wound DC starter motors produce peak torque when driven at the highest rpms. Who is correct? A. Technician A only

B. Technician B only C. Both A and B D. Neither A nor B

  1. Technician A says that PicoScope can be used to diagnose charging circuit problems. Technician B says that PicoScope can be used to diagnose cranking circuit problems. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  2. Technician A says that a PCM-managed ceramic glow plug can heat up to over 1250^0 C (2282^0 F) in as little as 2 seconds. Technician B says that a PCM-managed ceramic glow plug can be damaged if the glow plug circuit is energized for more than 2 seconds. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  3. What is the default timebase used in current PicoScope software? A. 1 ms per division B. 5 ms per division C. 10 ms per division D. 100 ms per division

CHAPTER 8

REVIEW QUESTIONS

  1. On the typical diesel fuel subsystem, which of the following would likely be at the lowest pressure when the engine is running? A. Outlet of the low-pressure pump B. Primary filter C. Secondary filter D. Charging circuit
  2. Where is a secondary filter usually located? A. Upstream from the transfer pump B. On the charge side of the transfer pump C. In the fuel rail D. In the return gallery
  3. What is the objective of filling vehicle fuel tanks before overnight parking? A. To minimize moisture condensation in the tanks B. To minimize fuel evaporation C. To help cool down onboard fuel D. Drivers may forget the next morning
  4. Besides fuel storage, the fuel tank may play an important role in a high-flow fuel system as a(n): A. Heat exchanger B. Fuel-heating device C. Ballast equalizer D. Aerodynamic aid
  5. Which of the following could be used to test the low-pressure side of a typical diesel fuel subsys- tem for inlet restriction? A. Diagnostic sight glass B. H 2 O manometer C. Negative-pressure gauge
  1. What type of pumping principle is used by a typical hand primer pump? A. Single-acting plunger B. Double-acting plunger C. Rotary gear D. Cam-actuated diaphragm
  2. Charging pressure rise is usually directly related to which of the following? A. Throttle position B. Engine load C. Peak power D. Increased rpm

CHAPTER 9

REVIEW QUESTIONS

  1. Which type of injection nozzle provides soft opening and closing pressures? A. Hydraulic multiple-orifice injector B. Electrohydraulic injector (EHI) C. Any hydraulically switched injector D. Any electronically switched injector
  2. When injector back leakage is bench checked and is higher than specified, which of the following is the usual cause? A. Low NOP setting B. High NOP setting C. Sticking nozzle valve D. Wear
  3. When nozzle forward leakage is bench checked, which of the following is being tested? A. NOP B. The seal at the nozzle seat C. Nozzle valve-to-body clearance D. Injector spring
  4. Replacing a single high-pressure injection pipe on a multicylinder engine by one of shorter length would likely have what effect on injection timing in the affected cylinder? A. Advance B. Retard C. None D. Decrease the fuel pulse width
  5. As injection pressure increases to a hydraulic injector nozzle, which of the following is likely to occur? A. Injected droplets decrease in size. B. Injected droplets increase in size. C. Ignition delay increases. D. Nozzle valve is more likely to unintentionally close.
  6. Which type of injector nozzle would be used in most diesel engine fuel systems built after 2007? A. Pintle valve B. Hard opening value C. Multiple orifice D. Electrohydraulic
  7. What should be used to remove the nut on a high-pressure injection line? A. Torque wrench B. Hex socket C. Line wrench

D. Open-end wrench

  1. Which of the following is another way of stating the NOP specification? A. Not operating properly B. Residual line pressure C. Peak pressure D. Popping pressure

A. Port closure timing B. NOP timing C. Point of ignition D. Completion of injection

  1. Which of the following components would limit engine fueling at high altitudes? A. Barometric capsule B. Aneroid C. Governor D. Variable timing
  2. A port-helix metering injection pump managing a direct-injected diesel engine would typically be port closure timed to what position on the engine? A. 50 degrees BTDC B. 50 degrees ATDC C. 20 degrees BTDC D. 20 degrees ATDC
  3. A common cause of diesel knock is: A. Prolonged injection lag B. Afterburn C. Prolonged ignition lag D. Preignition
  1. What is the function of the retraction collar/piston on the delivery valve core? A. Guide the valve in the body B. Permit the valve to seal before it seats C. Limit pressure wave reflection D. Limit back leakage to the pump chamber
  2. Which of the following does most to define the actual residual line pressure value in a running diesel engine using a port-helix metering PLN fuel system? A. The swept volume of the retraction collar/piston B. The mechanical force of the delivery valve spring C. The dead volume fuel D. The length of the high-pressure pipe

Rotary distributor pumps

  1. If a four-stroke cycle diesel engine fueled by an inlet-metering, opposed-plunger fuel pump is ro- tated through a complete engine cycle (720 degrees), how many revolutions does the distributor pump turn? A. One-half revolution B. One revolution C. Two revolutions D. Four revolutions
  2. What actuates the plungers of an inlet-metering, opposed-plunger fuel injection pump to create fuel injection pressures? A. Metered fuel quantity B. Charging fuel pressure C. External cam profile D. Internal cam ring
  3. In an inlet-metering, opposed-plunger fuel pump, what causes the outward movement of the op- posed plungers in the pump chamber during metering? A. Centrifugal force B. Metered fuel quantity C. Spring force D. Pump housing backpressure
  4. How is an inlet-metering, opposed-plunger fuel pump lubricated? A. Dedicated supply of engine lubricating oil B. Pressurized engine lubrication oil C. Fuel from the vane pump D. Prelubed on assembly
  5. Technician A says that on an inlet-metering, opposed-plunger fuel pump, plunger actual stroke is constant regardless of fuel requirement. Technician B says that in the same pump, plunger effective stroke is determined by vane pump pressure. Who is correct? A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
  6. How is the timing advance mechanism on a hydromechanical, inlet-metering, opposed-plunger fuel pump actuated? A. Hydraulically by the vane pump fuel pressure B. Hydraulically by engine oil pressure C. Pneumatically by manifold boost D. Manifold vacuum