Aircraft Component Repair Frequently Asked Questions
Automotive Engine Parts and Operation?
1. An automotive engine‘s camshaft rotates at
A. the same speed as the crankshaft.
B. one-quarter the speed of the crankshaft.
C. one-half the speed of the crankshaft.
D. twice the speed of the crankshaft.
2. The type of engine that contains one camshaft mounted in its cylinder head is called
A. an overhead valve engine.
B. an overhead camshaft engine.
C. a double-overhead camshaft engine.
D. a push rod engine.
3. The part of the poppet valve that contacts the valve seat is called the
FIGURE A-1—Use this illustration to answer Question 4.
4. Look at the engine block shown in Figure A-1. The engine shown in this figure is
A. a four-cylinder, in-line engine.
B. a six-cylinder, V-type engine.
C. a four-cylinder, horizontally opposed engine.
D. an eight-cylinder, V-type engine.
5. Which of the following components controls the opening and closing of the valves in an engine?
A. The crankshaft journals
B. The camshaft lobes
C. The rocker arms
D. The push rod
FIGURE A-2—Use this illustration to answer Question 6.
6. Look at the engine shown in Figure A-2. What type of valve system does the engine shown in this figure contain?
A. An overhead camshaft design with solid lifters
B. An overhead valve design with hydraulic lifters
C. An overhead camshaft design with hydraulic lifters
D. An overhead valve design with solid lifters
7. The crankshaft parts that are supported in the engine block by bearing inserts are called
A. rod journals.
B. main journals.
C. crankshaft throws.
8. During an engine‘s intake stage, what passages inside the cylinder head must the incoming air-and-fuel mixture flow through in order to enter the cylinder?
A. The intake ports
B. The exhaust manifold
C. The valve guide
D. The cylinder bore
9. Which of the following components serves as both a cover for the bottom of the engine block and a reservoir for engine oil?
A. The valve cover
B. The oil pan
C. The front cover
D. The lubrication retainer
FIGURE A-3—Use this illustration to answer Question 10.
10. Look at the illustration in Figure A-3. What method of driving a camshaft is shown in this figure?
A. A timing chain drive system
B. A timing belt drive system
C. A gear drive system
D. A direct drive system
11. In most engines, the head of the intake valve is
A. slightly larger than the head of the exhaust valve.
B. much smaller than the head of the exhaust valve.
C. the same size as the head of the exhaust valve.
D. a different shape than the head of the exhaust valve.
12. In an automotive engine, the wrist pin connects
A. the connecting rod to the crankshaft.
B. the crankshaft to the camshaft.
C. the piston to the connecting rod.
D. the valve to the cylinder head.
13. Which of the following components helps to limit the front-to-back movement of the crankshaft?
A. The cam bearing
B. The flywheel
C. The thrust bearing
D. The vibration dampener
14. The up-and-down motion of the piston is converted to rotary motion by the
A. cylinder head and the valves.
B. bearings and the piston rings.
C. push rods and the rocker arms.
D. connecting rod and the crankshaft.
15. In a typical automotive engine, the piston contains _______ compression ring(s).
16. Which of the following components is an external passageway that connects an engine‘s fuel system to a cylinder head port?
A. The exhaust manifold
B. The intake manifold
C. The intake valve
D. The exhaust valve
17. Which of the following lists the stages of the four-stroke engine cycle in the correct order of operation?
A. Power, intake, exhaust, compression
B. Intake, power, compression, exhaust
C. Exhaust, power, intake, compression
D. Intake, compression, power, exhaust
18. The space between the top of the valve stem and the rocker arm is called the
A. valve clearance.
B. end play.
C. bearing thrust.
D. valve margin.
19. The component in the cylinder head that holds a valve in place and prevents the valve stem from moving side to side is the
A. valve spring.
B. valve guide.
C. valve cover.
D. retainer clip.
20. The top of the cylinder head is sealed by the
A. valve cover.
B. front cover.
C. oil pan.
D. oil retainer.
21. The area in the cylinder head where the air-and-fuel mixture is burned is called the
A. combustion chamber.
B. intake port.
C. exhaust port.
D. valve guide.
22. A typical oil control ring consists of _______ separate part(s).
23. During engine operation, the total distance that a valve opens is called the
Just get out your text book and do the work yourself. If it necessary that you learn this, some one else telling you the answers won’t help.
Help with creating a Gravity Powered Vehicle?
I’m seriously struggling on this project and its due in two days. Pleeeeease any feedback will be appreciated! I just need someway to create this or I’m gonna fail this class. I already asked my dad for help, but he says its gonna take too much time.. but maybe you can give me some steps to making an easy A (or higher) vehicle?
Details: Vehicle must pass a 6 pt. desk check inspection and travel a 2 meter distance from the end of a ramp.
The Car: You may use ANY materials to build your car. There are 3 main components in building your car: body, axle, and wheels. << I have NO idea what to use for the axle (and how to use it) and wheels. :[
The components must come from 3 different sources, must be longer than 15 cm. and less than 30 cm., no engines, no rubbers bands, no batteries, minimum of 3 wheels, vehicle must travel straight~ and thats pretty much it.
Thanks a BUNCH in advance
Think “pinewood derby”?
Or how about “mousetrap car” without the mouse trap?
Or, for the body of the car you can use LEGOs or Meccano (Gilbert Erector) sets parts.
Undersize Bearings in a Chrysler 2.7L Engine?
I recently purchased a 2001 Chrysler Concorde that has 83,000 miles on the car. I purchased the car knowing the engine was needing repair (I knew the engine needed repair before I purchased the car). The engine had failed due to a timing chain tensioner failure; however, the engine had also been left open to atmosphere for a significant period of time so I am doing a complete teardown and rebuild on the engine. So far all components (except timing chain components) have been in good to excellent shape but I did find a surprise on the crankshaft. The rod bearings were 0.010 inch undersize and the main bearings were 0.020 inch undersize.
My question is would Chrysler build an engine with undersize bearings at the factory or is this the second time that this car has needed engine repair? The previous owner purchased this car used at 40,000 miles.
Any knowledgeable input would be appreciated.
Engine has been gone through before and crankshaft has been ground.Chrysler does not use under sized bearings.
19. What are the two types of O.B.D. II evaporative emission systems are there? (2)
20. In the Enhanced evap system on a vehicle you will find what color of cap on the service port?
21. A dual bed converter helps control what emissions?
22. What sensor checks the exhaust fumes?
23. On the O.B.D.II Evap system what allows the fuel vapors to leave the charcoal canister?
24. What is difference between the Non Enhanced System and the Enhanced Evap System?
25. O.B.D.II regulations mandated that the evap system be monitored for what two things?
26. All the combined pollutants (in the city especially) produces what?
27. Name the three main driveline components that are added to a 2WD vehicle to make it a 4WD vehicle. (3)
28. What type of axle does not support the vehicles load but provides a mounting place for the wheels?
29. What connects the drive shaft and the differential together?
30. What 3 things are inside an ignition coil?
31. What triggers the ignition module?
32. What does the ignition module control?
33. Why do we bypass the ballast resistor when the engine is first cranked over?
34. What protects the ignition points from arcing and acts as an electrical shock absorber?
35. By looking at a spark plug can engine condition be determined?
36. What carries secondary voltage to the spark plugs?
37. What is energized and de-energized to produce a collapsible magnetic field?
38. What three methods of controlling timing advance are incorporated in the ignition system?
39. List the three different types of pick up coils? (3)
40. When doing the wet finger test, what part of the ignition system are you pretending to be?
I know its alot but 10 points for the best answer I will choose
Sorry,you’re gonna have to study a lil harder and answer those questions yourself
Automotive Mechanic Questions?
Need some help with my auto exam review questions.
19.What are the two types of O.B.D. II evaporative emission systems are there? (2)
20.In the Enhanced evap system on a vehicle you will find what color of cap on the service port?
21.A dual bed converter helps control what emissions?
22.What sensor checks the exhaust fumes?
23.On the O.B.D.II Evap system what allows the fuel vapors to leave the charcoal canister?
24.What is difference between the Non Enhanced System and the Enhanced Evap System?
25.O.B.D.II regulations mandated that the evap system be monitored for what two things?
26.All the combined pollutants (in the city especially) produces what?
27.Name the three main driveline components that are added to a 2WD vehicle to make it a 4WD vehicle.(3)
28.What type of axle does not support the vehicles load but provides a mounting place for the wheels?
29.What connects the drive shaft and the differential together?
30.What 3 things are inside an ignition coil?
31.What triggers the ignition module?
32.What does the ignition module control?
33.Why do we bypass the ballast resistor when the engine is first cranked over?
34.What protects the ignition points from arcing and acts as an electrical shock absorber?
35.By looking at a spark plug can engine condition be determined?
36. What carries secondary voltage to the spark plugs?
37.What is energized and de-energized to produce a collapsible magnetic field?
38.What three methods of controlling timing advance are incorporated in the ignition system?
39.List the three different types of pick up coils?(3)
40.When doing the wet finger test, what part of the ignition system are you pretending to be?
You need to rely on your course textbooks and good study habits. It pays off because I’ve been there and studied hard myself.
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