เครื่องยนต์เล็กและหลักการทำงาน

44

3

4
2
22
44

1.
2.
3.
4. 4
5. 2
6. 2 4
7. 4

1.
2.
3.
4. 4
5. 2
6. 2 4
7. 4

1. 45

1.1 10
3.1 3.2 1

3.1
: http://www.google.co.th/imgres?q

46

3.2
: http://www.google.co.th/imgres?q
1.2 1 3.3
3.4

3.3 .html
: http://www.nakarinbangkok.com/articles/49590/

47

3.4
: http://www.google.co.th/imgres?q

2. (ENGINE COMPONENTS)

3.5

48

3.5
: http://vallop-automechanics.blogspot.com/2012/05/blog-post_30.html

1. ( Cylinder Head)

2. ( Cylinder Block)

3. ( Cylinder)

4. ( Piston)

5. ( Piston Ring)
2-3

1-2

5.1 ( Compression Ring)

5.2 ( Oil Ring) ( Oil Return
Hole)

6. ( Connecting Rod)

7. ( Crankshaft)

49

8. (Camshaft)
9. ( Valve)

(poppet valves)

(ports)
10. ( Fly wheel)

11. ( Crank Case)

( oil pan)

12. (Water pump)

13. (Oil pump) (Cylinder block)

( Camshaft)

( Oil) ( Oil pan)
(Oil filter)

14. (Air cleaner)

(pre cleaner)

15. (Timing belt)

16. ( Exhaust manifold)

17. ( Distributor)

50

3.

3.1 (Cylinder Block)
3.6

(1) (2)
RT
3.6
:

3.2 (Piston)

51
3.7

(1) (2)
3.7 ; 2554.
:
1-2
3.3 (Piston Ring) 3.8
2-3

3.8 RT
:

52

3.4 ( Compression Ring)
3.9

3.5 3.9 ( Oil
Return Hole) : RT ( Integral Type)

3 ( Oil Ring) 3.10

2
( Three-piece Type)

53

3.10
: RT
3.6 (Cylinder Liner)

(O-Ring)
(Standard Size)

3.11

3.11 2

: www.google.co.th/search?hl

3.7 (Cylinder Head)

3.12
5.1

54
5.2

(1) (2)
3.12 RT ; 2554.

: 4 (Exhaust Valve)
3.13
3.8 (Valve)

(Intake Valve)

3.13
: ; 2554.

55

3.9 (Connecting Rod)

( I) ( Small End)
(Big End) 2
3.14

(1) (2)
3.14 ; 2554.
:

3.10 ( Connecting Rod Bearing)
( Kelmet)
2

3.15

56

3.15
: http://auto.lannapoly.ac.th/e-learning/engine/content/bearing.htm
3.11 ( Crankshaft)

3.16

3.16 ; 2554.
:

3.12 ( Camshaft)

1
3.17

57

3.17 ; 2554. 1
: 12

3.13 (Flywheel)

3.18

T
F

(1) (2)
RT
3.18
:

3.14 ( Counter Shaft) 2

3.19

58

3.26
: RT
3.15 (Fuel pump)

3.20

3.20

59

: ; 2554.
3.16 ( Injector) 3.21

3.21 RT
:

2 (Energy Cell)
1. ( Pintle Nozzle)

(Pre Combustion)

2. ( Hole Nozzle)

3.17 (Spark Plug) 200-800
/ 2,000 2,500 C

()

60
3.22

3.22 ; 2554
:

3.18 ( Ignition Coil) 25,000 30,000
2
3.23

(1) HONDA GX120 (2) HONDA G200

3.23 ; 2554
:

4. 4

4 ( Four-stroke engine) 61

(petrol engine gasoline engine) "
" 700-900

25 ,000

""

44 ""
( Suction or intake stroke)
(Compression stroke)

700-900
(Power stroke)

( Exhaust stroke)

4 4
2 1 3.24 2.28

62

3.24 4
: http://th.wikipedia.org/wiki

3.24

3.25 4
: http://th.wikipedia.org/wiki

3.25 700-900

63

3.26 4
: http://th.wikipedia.org/wiki

3.26 25 ,000

3.27 4

64

: http://th.wikipedia.org/wiki
3.27

3.28 4
: http://th.wikipedia.org/wiki
3.28
,
5.
2 2
5.1 2
2 2 2
2
1 4
- (Two-stroke engine)
4 2
-

3.32

65

TDC
BDC

1 22 1
3.32
; 2552.
: 2
1
3.32 2
1. 21

2.

3.

5.2 2
2 (Two-stroke engine) 2

-

66
3.33

3.33 2
5.3
2
: http://www.google.co.th/imgres?q

1

3.34

67

3.34 1
5.4 : http://www.google.co.th/imgres?q

2

4.35

68

3.35 2
: http://www.google.co.th/imgres?q
2

5.5 2
2

(Power Reed Valve) 2
5.5.1

3.36

69

3.36 : ; 2552.
5.5.2

3.37

3.37 ; 2552.
:

70

6. 24

6.1 2

6.2 4
6.3
6.4
6.5
6.6

24
24

1200oC

120oC
70oC

1. 1.

71

2. 2.

3. 3.
2 4 ()

24

4. 4.

72
5. 5.

7. 4

10
3,38

73

3.38
: http://www.google.co.th/imgres?q

7.1 T.D.C 4
3.39
B.D.C

3.39 ; 2552.
:

7.1.1 (Induction) 1
0.6 0.9

74
3.40

3.40 ; 2552.
:
7.1.2 30 40 16 : 1
23 : 1 (Compression) 600 700 3.41

16 : 1 23 : 1

3.40 75
: ; 2552.

7.1.3 (Expansion) ( Ignition Delay
2000 2500
Period) 0.001
3.41
15 75

3.41 : ; 2552.
(Exhaust) 500 600
7.1.4
1) 1.1

2)

900

2000 2500

3.42

76

3.42

: ; 2552.

7.2 4

4

4 2 720 3.43

3.43 ; 2552.
: