Instructor Manual: Automotive Engines Diagnosis, Repair, and Rebuilding 9th Edition Tim Gilles, Tim LeVan
Solution Manual For
Automotive Engines Diagnosis, Repair, and Rebuilding 9th Edition Tim Gilles, Tim LeVan
Chapter 1-19
Chapter 1: Engine Operation
TABLE OF CONTENTS
Purpose and Perspective of the Chapter ................................................................................................... 2
Chapter Objectives ...................................................................................................................................... 2
Complete List of Chapter Activities and Assessments ............................................................................. 2
Key Terms .................................................................................................................................................... 3
What’s New in This Chapter ...................................................................................................................... 3
Chapter Outline ........................................................................................................................................... 3
Lesson Hints................................................................................................................................................. 5
Reading Assignment .................................................................................................................................... 5
Written Assignments ................................................................................................................................... 5
Chapter 1 Answers To Study Questions ..................................................................................................... 5
Chapter 1 Answers To ASE-Style Review Questions ................................................................................... 6
© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly 1
accessible website, in whole or in part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
PURPOSE AND PERSPECTIVE OF THE CHAPTER
The purpose of this chapter is to introduce students to the basic construction and operation of an internal
combustion engine. It describes the many engine components and how to identify the various pieces. Also
explained are the different engine classifications along with the different systems and how they work
together to keep the engine operating effectively.
CHAPTER OBJECTIVES
Upon completion of this chapter, the student should be able to:
Explain the principles of internal combustion engine operation.
Identify internal combustion engine parts by name.
Explain various engine/classifications/and/systems.
COMPLETE/LIST/OF/CHAPTER/ACTIVITIES/AND/ASSESSMENTS
For/additional/guidance,/refer/to/the/Teaching/Online/Guide.
Chapter Activity/Assessment Source/(i.e.,/PPT Duration
Objective slide,/Workbook)
Explain/the/princ Icebreaker PPT/slide/2 10–15/mins
iples/of/internal/c
ombustion/engin
e/operation.
Identify/internal Activity PPT/slide/27 10–20/minutes
/combustion/eng
ine/parts/by/nam
e.
Explain/various Self-Assessment PPT/slide/29 5–10/minutes
/engine/classific
ations/and
systems.
[return/to/top]
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 2
y/ accessible/website,/in/whole/or/in/part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
KEY/TERMS
BDC:/Bottom/Dead/Center,/referring/to/the/location/of/the/piston/at/the/bottom/of/the/stroke
bimetal/engine:/ Engines/composed/of/cast/iron/block/and/aluminum/heads
blowby:/ Gasses/that/escape/past/piston/rings
companion/cylinders:/ term/given/to/pairs/of/cylinders/found/in/engines/with/even/number/of/cylinders
compression/ratio:/ the/ratio/at/which/the/air/fuel/gas/mixture/is/compressed/
displacement:/refers/to/the/volume/that/the/piston/displaces/in/the/cylinder/f
iring/order:/The/sequence/in/which/the/spark/plugs/fire/in/each/cylinder
lower/end:/ Refers/to/the/location/at/the/bottom/of/the/block/where/the/crankshaft/and/bearings/are/
located
TDC:/Top/Dead/Center,/referring/to/the/location/of/the/piston/at/the/top/of/the/stroke
transverse/engine:/ term/given/to/the/engines/in/front/wheel/drive/vehicles
[return/to/top]
WHAT’S/NEW/IN/THIS/CHAPTER
[Information/to/be/added/later/by/author]
The/following/elements/are/improvements/in/this/chapter/from/the/previous/edition:
[return/to/top]
CHAPTER/OUTLINE
In/a/simple/one-cylinder/engine,/the/reciprocating/(up-and-
down)/motion/of/the/piston/is/changed/to/usable/rotary/motion/by/the/connecting/rod/and/crankshaf
t./A/flywheel/gives/momentum/to/the/crankshaft/between/power/strokes./Valves/control/the/engine
’s/intake/and/exhaust./(PPT/Slide/4)
During/one/four-
stroke/cycle,/the/intake,/compression,/power,/and/exhaust/strokes/are/completed./This/action/takes/
720° ,/or/two/crankshaft/revolutions./(PPT/Slide/5)
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 3
y/ accessible/website,/in/whole/or/in/part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
The/compression/ratio/is/how/the/engine/makes/the/most/efficient/use/of/the/combustion/event/in/e
ach/cylinder./ The/higher/the/compression/ratio/the/more/potential/output/a/cylinder/has./(PPT/Slid
e/6)
Cylinders/are/arranged/in-line,/in/a/V-
type,/or/opposed/to/each/other./The/most/popular/automotive/engines/have/four,/six,/or/e
ight/cylinders./(PPT/Slide/7)
The/camshaft/controls/the/opening/and/closing/of/the/valves/and,/thus,/the/way/that/the/engine/b
reathes./Different/cam/grinds/provide/better/low-speed/or/better/high-
speed/operation./(PPT/Slides/8,/9)
The/camshaft/is/driven/by/a/chain,/a/belt,/or/gears./(PPT/Slide/8)
Camshafts/are/driven/by/a/timing/chain/or/a/timing/belt./(PPT/Slides/8,/9)
Cylinder/rows,/called/banks,/are/determined/from/the/flywheel/end/of/the/engine./A/complete/e
ngine/assembly/including/the/heads/is/called/a/long/block;/without/heads/it/is/called/a/short/blo
ck./(PPT/Slide/12,/13)
The/crankcase/houses/the/crankshaft/and/bearings./It/is/enclosed/by/the/oil/pan./The/crankshaft/h
as/a/flywheel/on/one/end/and/a/vibration/damper/or/pulley/on/the/other/end./The/part/that/the/bea
ring/rides/against/is/called/the/main/or/rod/bearing/journal./Crankpins/on/four/cylinders/are/offse
t/from/each/other/by/180° ,/in-line/six/cylinders/by/120° ,/and/V8s/by/90° ./(PPT/Slides/14)
Engine/sizes/are/described/by/their/cylinder/displacement,/usually/in/liters./Engine/breathing/d
etermines/the/power/that/the/engine/develops./(PPT/Slide/15)
The/location/of/the/camshaft/depends/on/the/engine/design/and/the/type/of/vehicle/the/engine/is/b
eing/put/in./ Cam-
In/Block/engines/have/the/camshaft/in/the/cylinder/block./ Overhead/cam/engines/have/the/cams
haft/in/the/cylinder/head./(PPT/Slide/17)
Engine/cylinders/are/fired/in/one/of/several/firing/orders./(PPT/Slide/21)
Pairs/of/pistons/that/go/up/and/down/together/but/fire/360° from/each/other/are/called/co
mpanions./(PPT/Slide/19)
Most/engines/have/liquid/cooling/systems/that/use/coolant/to/prevent/rust/and/corrosion/and/p
rovide/additional/protection/against/freezing/and/boiling./(PPT/Slides/23–25)
Spark/ignition/engines/utilize/a/spark/plug/to/start/the/ignition/event./ (PPT/Slide/26)
Compression/engines/utilize/heat/and/pressure/to/start/the/ignition/event/in/the/cylinder/(PPT/S
lide/27)
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 4
y/ accessible/website,/in/whole/or/in/part.
Solution Manual For
Automotive Engines Diagnosis, Repair, and Rebuilding 9th Edition Tim Gilles, Tim LeVan
Chapter 1-19
Chapter 1: Engine Operation
TABLE OF CONTENTS
Purpose and Perspective of the Chapter ................................................................................................... 2
Chapter Objectives ...................................................................................................................................... 2
Complete List of Chapter Activities and Assessments ............................................................................. 2
Key Terms .................................................................................................................................................... 3
What’s New in This Chapter ...................................................................................................................... 3
Chapter Outline ........................................................................................................................................... 3
Lesson Hints................................................................................................................................................. 5
Reading Assignment .................................................................................................................................... 5
Written Assignments ................................................................................................................................... 5
Chapter 1 Answers To Study Questions ..................................................................................................... 5
Chapter 1 Answers To ASE-Style Review Questions ................................................................................... 6
© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly 1
accessible website, in whole or in part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
PURPOSE AND PERSPECTIVE OF THE CHAPTER
The purpose of this chapter is to introduce students to the basic construction and operation of an internal
combustion engine. It describes the many engine components and how to identify the various pieces. Also
explained are the different engine classifications along with the different systems and how they work
together to keep the engine operating effectively.
CHAPTER OBJECTIVES
Upon completion of this chapter, the student should be able to:
Explain the principles of internal combustion engine operation.
Identify internal combustion engine parts by name.
Explain various engine/classifications/and/systems.
COMPLETE/LIST/OF/CHAPTER/ACTIVITIES/AND/ASSESSMENTS
For/additional/guidance,/refer/to/the/Teaching/Online/Guide.
Chapter Activity/Assessment Source/(i.e.,/PPT Duration
Objective slide,/Workbook)
Explain/the/princ Icebreaker PPT/slide/2 10–15/mins
iples/of/internal/c
ombustion/engin
e/operation.
Identify/internal Activity PPT/slide/27 10–20/minutes
/combustion/eng
ine/parts/by/nam
e.
Explain/various Self-Assessment PPT/slide/29 5–10/minutes
/engine/classific
ations/and
systems.
[return/to/top]
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 2
y/ accessible/website,/in/whole/or/in/part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
KEY/TERMS
BDC:/Bottom/Dead/Center,/referring/to/the/location/of/the/piston/at/the/bottom/of/the/stroke
bimetal/engine:/ Engines/composed/of/cast/iron/block/and/aluminum/heads
blowby:/ Gasses/that/escape/past/piston/rings
companion/cylinders:/ term/given/to/pairs/of/cylinders/found/in/engines/with/even/number/of/cylinders
compression/ratio:/ the/ratio/at/which/the/air/fuel/gas/mixture/is/compressed/
displacement:/refers/to/the/volume/that/the/piston/displaces/in/the/cylinder/f
iring/order:/The/sequence/in/which/the/spark/plugs/fire/in/each/cylinder
lower/end:/ Refers/to/the/location/at/the/bottom/of/the/block/where/the/crankshaft/and/bearings/are/
located
TDC:/Top/Dead/Center,/referring/to/the/location/of/the/piston/at/the/top/of/the/stroke
transverse/engine:/ term/given/to/the/engines/in/front/wheel/drive/vehicles
[return/to/top]
WHAT’S/NEW/IN/THIS/CHAPTER
[Information/to/be/added/later/by/author]
The/following/elements/are/improvements/in/this/chapter/from/the/previous/edition:
[return/to/top]
CHAPTER/OUTLINE
In/a/simple/one-cylinder/engine,/the/reciprocating/(up-and-
down)/motion/of/the/piston/is/changed/to/usable/rotary/motion/by/the/connecting/rod/and/crankshaf
t./A/flywheel/gives/momentum/to/the/crankshaft/between/power/strokes./Valves/control/the/engine
’s/intake/and/exhaust./(PPT/Slide/4)
During/one/four-
stroke/cycle,/the/intake,/compression,/power,/and/exhaust/strokes/are/completed./This/action/takes/
720° ,/or/two/crankshaft/revolutions./(PPT/Slide/5)
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 3
y/ accessible/website,/in/whole/or/in/part.
, Instructor/Manual:/Chapter/1:/Engine/Operation
The/compression/ratio/is/how/the/engine/makes/the/most/efficient/use/of/the/combustion/event/in/e
ach/cylinder./ The/higher/the/compression/ratio/the/more/potential/output/a/cylinder/has./(PPT/Slid
e/6)
Cylinders/are/arranged/in-line,/in/a/V-
type,/or/opposed/to/each/other./The/most/popular/automotive/engines/have/four,/six,/or/e
ight/cylinders./(PPT/Slide/7)
The/camshaft/controls/the/opening/and/closing/of/the/valves/and,/thus,/the/way/that/the/engine/b
reathes./Different/cam/grinds/provide/better/low-speed/or/better/high-
speed/operation./(PPT/Slides/8,/9)
The/camshaft/is/driven/by/a/chain,/a/belt,/or/gears./(PPT/Slide/8)
Camshafts/are/driven/by/a/timing/chain/or/a/timing/belt./(PPT/Slides/8,/9)
Cylinder/rows,/called/banks,/are/determined/from/the/flywheel/end/of/the/engine./A/complete/e
ngine/assembly/including/the/heads/is/called/a/long/block;/without/heads/it/is/called/a/short/blo
ck./(PPT/Slide/12,/13)
The/crankcase/houses/the/crankshaft/and/bearings./It/is/enclosed/by/the/oil/pan./The/crankshaft/h
as/a/flywheel/on/one/end/and/a/vibration/damper/or/pulley/on/the/other/end./The/part/that/the/bea
ring/rides/against/is/called/the/main/or/rod/bearing/journal./Crankpins/on/four/cylinders/are/offse
t/from/each/other/by/180° ,/in-line/six/cylinders/by/120° ,/and/V8s/by/90° ./(PPT/Slides/14)
Engine/sizes/are/described/by/their/cylinder/displacement,/usually/in/liters./Engine/breathing/d
etermines/the/power/that/the/engine/develops./(PPT/Slide/15)
The/location/of/the/camshaft/depends/on/the/engine/design/and/the/type/of/vehicle/the/engine/is/b
eing/put/in./ Cam-
In/Block/engines/have/the/camshaft/in/the/cylinder/block./ Overhead/cam/engines/have/the/cams
haft/in/the/cylinder/head./(PPT/Slide/17)
Engine/cylinders/are/fired/in/one/of/several/firing/orders./(PPT/Slide/21)
Pairs/of/pistons/that/go/up/and/down/together/but/fire/360° from/each/other/are/called/co
mpanions./(PPT/Slide/19)
Most/engines/have/liquid/cooling/systems/that/use/coolant/to/prevent/rust/and/corrosion/and/p
rovide/additional/protection/against/freezing/and/boiling./(PPT/Slides/23–25)
Spark/ignition/engines/utilize/a/spark/plug/to/start/the/ignition/event./ (PPT/Slide/26)
Compression/engines/utilize/heat/and/pressure/to/start/the/ignition/event/in/the/cylinder/(PPT/S
lide/27)
©/2024/Cengage./All/Rights/Reserved./May/not/be/scanned,/copied/or/duplicated,/or/posted/to/a/publicl 4
y/ accessible/website,/in/whole/or/in/part.
