Number of Cylinders

tgn tions

Name: Date: Instructor: Textbookpages 162*181

Objective: After studying this chapter, you will be able to describe and explain basic automotive engine designs and classifications.

Cylinder Arrangement

1. Define cylinder arrangement.

2. Name the five basic cylinder arransements.

3. The cylindersof a(n) _ engineare lined up in a singlerow. --). 4. A(n) _ enginehas only one bank of cylinders. 4.

5. Cylinders of a(n) _ engine lie flat on either side of the crankshaft. 5.

Number of Cylinders

6. Normally, car and truck engineshave either _ cylinders. 6. (A) 4, 5, or 6 (B) 2,4, or 6 (:C) 4,6, or 8 (D) 6, 10,or 12 7 . A greaternumber of cylinders generally (increases/decreases)engine 7. smoothnessand power.

8. A(n) _ cylinder engine produces twice as many power strokes per 8. crank revolution as a(n) _ cylinder engine. (A) 3, 8 (B) 8,4 (c) 6,r0 (D) None of the above.

Cylinder Numberingand Firing Order

9. Why do engine manufacturersnumber each engine cylinder?

10. cylinder numbersare normally stamped on an engine's_ rodsor they 10. are sometimescast into the

1i. Definey'ring order.

12. When is it important to know an engine's firing order?

CoolingSystem Tlpe

13. Explain how a liquid cooling systemoperates.

14. _cooled enginesare seldomused in passengercars. 14.

15. An air cooling systemcirculates air over _ on the cylinders to prevent 15; overheating.

Fuel Dpe

16. An enginecan be classifiedby the type of_ it burns. 16. 17. Name at least three types of fuels used in automotive engines. 17.

18. What are the two most common types,pf fuel for vehicles? 18. lgnition TYpe

19. Explain the difference between a spark ignition engine and a compresslonignition e4gine.

20. Gasolineengines use _ ignition. 20.

21. A dieselengine is a(n) _ ignition engine 2r.

Valve Location

22. A(n) _ engine has both the intake and exhaustvalves in the block. 22.

23. A(n) _ engine has both valves in the cylinder head. L3. 24. Identify the parts of the valve-in-block anangement illustrated below.

(A) (B) (c) (D) (E)

25. What type of valve-camshaftarrangement is illustrated below? Label the parts as indicated.

Type' (A) (B) (c) (D) (E)

26' What type of valve-camshaftarrangement is illustrated below? Label the parts as indicated.

Type: (A) (B) (c) (D) -(E)

(F) (G)

(H) (r)

CamshaftLocation

27. Name the two basic locations for the engine camshaft.

28.A(n) - engine usespush rods to transfer motion to the rocker arms and 28. valves and a(n) _ engine has the camshaft in the cylinder head.

29. A(n) _ engine has only one camshaft per cylinder head. 29. 30. The _ arangement is frequently used in engines equipped with four- 30. valve combustion chambers.

CombustionChamber Shape

3 1. List the three types of combustion chamber designs.

JZ. The - combustion chamber has valve headsthat are almost parallel to )2. the top of the piston.

-f J. In a(n) _ combustion chamber, the spark plug is located near the JJ. center.

CombustionChamber Tlpes

\:.. 34. A(n) - combustion chamber is designedto causethe air-fuel mixture 34. to swirl, or spin, as it entersfrom the - port.

35. The extra valves in a(n) - combustion chamber increase flow in and 35. out of the chamber.

36. A three-valve combustion chamber has - intake valve(s) and - 36. exhaustvalve(s). (A) 1,2 (B) 2,1 (c) 3,3 (D) None of the above.

37. Briefly describe the operation of a stratified charge combustion chamber

38. A(n) - combustionchamber has a singlechamber fitted with an extra 38. air valve.

\- Alternative Engines A Fill in the blanks of the statementson the left with the correctterm from the list on the right. 39. A(n) engineuses a triangularrotor instead (A) two-sfoke-cycleengine 39. of conventionalpistons. (B) Miller_cycle 40. A(n) usesa mixtureof fuel andoil. 40. (C) rotary 41. A(n) - is designedwith a shortcompression 4t. stroke and a long power stroke to increase efficiencv.

.l-

Tlpical Automotive Engines

42. Label the parts of the fuel-injected V-8 engine illustrated below Indicate the type(s) of metal used in each part,s construction.

(A) (H)

(B) (D

(D) (K)

(E) (L)

(F) (M)

(G) (N)