Gasoline Engine.ppt
-
Upload
cyrus-mutua-mbwika -
Category
Documents
-
view
239 -
download
0
Transcript of Gasoline Engine.ppt
-
7/26/2019 Gasoline Engine.ppt
1/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
General Description General Description
(1/1)
Basic principle of four-stroke engine
-
7/26/2019 Gasoline Engine.ppt
2/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Air-fuel Mixture
(1/2)
1.Good air-fuel mixture for
automobiles
Air
Fuel
15
Theoreticalair-fuel ratio
1510 20
Air-fuel ratioRicher Leaner
1
-
7/26/2019 Gasoline Engine.ppt
3/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Air-fuel Mixture
(1/2)
2.Air-fuel ratio
Air
Fuel
15
Theoreticalair-fuel ratio
1510 20
Air-fuel ratioRicher Leaner
1
-
7/26/2019 Gasoline Engine.ppt
4/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Air-fuel Mixture
(2/2)
3.Air fuel ratio and driving
conditions
Air
Fuel
15
Theoreticalair-fuel ratio
1510 20
Air-fuel ratioRicher Leaner
1
-
7/26/2019 Gasoline Engine.ppt
5/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Compression
(1/1)
1.Necessity of compressing the air-fuel mixture
Compression
ratio
Volume of combustion chamber (A) + Volume of cylinder (B)
Volume of combustion chamber (A)=
-
7/26/2019 Gasoline Engine.ppt
6/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Spark
(1/1)
1 2
Spark plug
Air-fuelmixture
-
7/26/2019 Gasoline Engine.ppt
7/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Spark
(1/1)
1 2
Spark plug
Air-fuelmixture
1.Conditions for a good spark
-
7/26/2019 Gasoline Engine.ppt
8/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Three Elements of Gasoline Engines Good Spark
(1/1)
1 2
Spark plug
Air-fuelmixture
-
7/26/2019 Gasoline Engine.ppt
9/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
-
7/26/2019 Gasoline Engine.ppt
10/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
Cylinder head
Cylinder head gasket
-
7/26/2019 Gasoline Engine.ppt
11/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
Cylinder block
-
7/26/2019 Gasoline Engine.ppt
12/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
Crankshaft
Bearing cap
-
7/26/2019 Gasoline Engine.ppt
13/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
Connecting rod
Bearing cap
-
7/26/2019 Gasoline Engine.ppt
14/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
Crankshaft
bearingThrust
washer
Connecting
rod bearing
-
7/26/2019 Gasoline Engine.ppt
15/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
PistonPiston pin
Piston
rings
-
7/26/2019 Gasoline Engine.ppt
16/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Description
(1/1)
(1) Exhaust camshaft (2) Intake camshaft
(3)(4)
(5)
(6)
(7)(8)
(9) Valve
(10) Timing chain
(11) Chain tensioner slipper
(13) Timing chain tensioner(14) Crankshaft timing sprocket
(12)Chainvibrationdamper
-
7/26/2019 Gasoline Engine.ppt
17/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Cylinder Head
(1/1)
Cylinder head Spark plug
Intake port
Water jacket
Exhaust port
Cylinder head gasket
Combustion
chamber
Oil hole
-
7/26/2019 Gasoline Engine.ppt
18/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Plastic Region Bolt
(1/1)
Elastic region Plastic region
SmallerLarger
Bolttension
Yield
point
Fracture
point
Bolts rotational anglePlastic region bolt
Cylinder head
Bolts rotational angle
Bolt
tension
-
7/26/2019 Gasoline Engine.ppt
19/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Cylinder Block
(1/3)
Cylinder block
Cylinder liner
Combustion stroke Compression stroke
Ridge
Cylinder wear
Thrust force
-
7/26/2019 Gasoline Engine.ppt
20/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Cylinder Block
(2/3)
1.Cylinder bore sizeLocation of cylinder bore STD size codes
(5VZ-FE engine)
Front
Bore size code
1
2
3
Small
Large
Cylinder bore size
-
7/26/2019 Gasoline Engine.ppt
21/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Cylinder Block
(3/3)
2.Crankshaft main journal
bore size Location of main journal bore STD size codes(1NZ-FE engine)
Bore size code
0
1
6
Small
Large
Crankshaft main
journal bore size
-
7/26/2019 Gasoline Engine.ppt
22/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Crankshaft
(1/3)REFERENCE:
Crankshaft Offset
Crankshaft
Crank pin
Crank journal Balance weight
Oil hole
-
7/26/2019 Gasoline Engine.ppt
23/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Crankshaft
(2/3)
Example
Bearing cap
Bearing cap unit with ladder-frame construction
-
7/26/2019 Gasoline Engine.ppt
24/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Crankshaft
(3/3)
1.Main journal and crank
pin sizeLocation of main journal and crank pin STD size codes
Main journal STDsize codes(1NZ-FE engine)
Main journal STD
size codes
(2JZ-GE engine)
Crank pin STD
size codes
(2JZ-GE engine)
Main journal or crank
pin size codes
1
2
3
Small
Large
Main journal or
crank pin size
-
7/26/2019 Gasoline Engine.ppt
25/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Crankshaft Bearing
(1/1)
1.Bearing size/
2.Undersize bearingUpper halt-bearing
Oil holeOil groove
Thrust washer
Bearing size code
Oil grooveLower half-bearing
Locking lip
Bearing size code Bearing size
1
2
Thin
Thick
-
7/26/2019 Gasoline Engine.ppt
26/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Connecting Rod
(1/1)
1.Big end bore size
Connecting rod
Oil jet
Big end bore
size codeFront mark
Big end bore
Big bore size
code
1
2
3
Large
Small
Big end bore size
Bearing cap
-
7/26/2019 Gasoline Engine.ppt
27/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Connecting Rod Bearing
(1/1)
1.Bearing Size/
2.Undersize Bearing
Oil hole
Bearing size code
Bearing size code Bearing size
1
2
Thin
Thick
Di i T h i i G li E i G li E i
-
7/26/2019 Gasoline Engine.ppt
28/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Bearing Selection
(1/2)
Oil clearance
Bearing Oil film
Oil clearance
Di i T h i i G li E i G li E i
-
7/26/2019 Gasoline Engine.ppt
29/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Bearing Selection
(2/2)
1.Bearing selection method
No.2
No.1No.3No.5
No.1 No.2 No.3 No.4
No.5
Cylinder block main journal
bore size code (A)
Crankshaft main journalsize code (B)
Example
Use bearing size code
A = 4, B = 3, A + B = 7
0 - 2 3 - 5 6 - 8 9 - 11
7
1 2 3 4
Bearing size cord
No.4
Di i T h i i >> G li E i >> G li E i
-
7/26/2019 Gasoline Engine.ppt
30/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(1/4)
1.Description
B
A
Oval Circle
SmallPiston pin boss
Piston
skirt
Large
Truncated cone
Cold
True cylinder
Hot
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
31/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(2/4)
2.Thrust force
Combustion pressure Compression pressure
Major thrust force
(Combustion stroke)
Minor thrust force
(Compression stroke)
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
32/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(3/4)
3.Piston slap (Side knocking)/
4.Operation of offset pistonsPiston slap
Offset piston
Center of piston pin Center of piston
Piston
Offset
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
33/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(3/4)
3.Piston slap (Side knocking)/
4.Operation of offset pistons
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
34/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(4/4)
5.Piston size
Piston size code
Piston size code and front mark
(5VZ-FE engine)
Front mark
REFERENCE:
Striations on the Piston Skirt
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
35/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(4/4)
Piston size code
Piston size code and front mark
(5VZ-FE engine)
Front mark
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
36/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston
(4/4)
Piston size code
Piston size code and front mark
(5VZ-FE engine)
Front mark
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
37/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston Ring
(1/4)
1.Description
Compression ring No.1
Compression ring No.2
Oil ring side rail (upper)
Oil ring expander
Oil ring side rail (lower)
Oil rings
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
38/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Piston Ring
(2/4)
2.Marks of ring
Size
Manufacturer
No.1 code mark
No.2 code mark
No.1 compression ring end gap
and oil ring expander end gap Oil ring side rail (lower) end gap
No.2 compression ring end gapOil ring side rail (upper) end gap
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
39/75
Diagnosis Technician Gasoline Engine Gasoline Engine
Engine Proper Piston Ring
(3/4)
3.Ring end gap
1NZ-FE engine:
110mm (4.33 in.)
Ring end gap
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
40/75
Diagnosis Technician Gasoline Engine Gasoline Engine
Engine Proper Piston Ring
(4/4)
4.Ring pumping effect and
ring flutter
Cylinder
Engine oil
Piston
Piston ring
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
41/75
g g g
Engine Proper Valve Mechanism
(1/1)
1.Valve opening and closing system
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
42/75
g g g
Engine Proper Valve and Related Parts
(1/4)
2.Valve
Valve stem
Oil seal
Valve face
Camshaft
Valve guide
bushing
Valve head
44.5
or 45.5
Exhaust
valve
Intake
valve
Exhaust valve
Combustion chamber
Intake valve
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
43/75
g g g
Engine Proper Valve and Related Parts
(2/4)
3.Valve spring
Uneven pitch spring
(symmetrical)
Uneven pitch spring
(asymmetrical)
Double spring
Inner Outer
Top
a
b
c
d
e
a=ce
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
44/75
g g g
Engine Proper Valve and Related Parts
(3/4)
4.Valve seat
Valve contact face
60
45
30
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
45/75
Engine Proper Valve and Related Parts
(4/4)
5.Valve guide bushing and
oil sealOil seal
Valve quide bushing
Valve stem
Engine oil
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
46/75
Engine Proper Valve Timing
(1/2)
Valve timing diagram(2NZ-FE engine without VVT-i, leaded gasoline type)
Compression stroke
Exhaust stroke
Intake stroke
Combustion
(power) stroke
Ex.In.Ex.In.
Ex.In. Ex.In.
TDCValve overlap
Intake valve
opens
Intake
valve
closes
Exhaust
valve closesExhaustvalveopens
BDC
43
2 2
34
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
47/75
Engine Proper Valve Timing
(2/2)
Valve overlap
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
48/75
Engine Proper Valve Clearance
(1/1)
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
49/75
Engine Proper Adjustment of Valve Clearance
(1/2)
1. Type requiring
replacement of the
valve lifter when
adjusting valveclearance/
2. Type requiring
replacement of
shim when
adjusting valve
clearance
1
2-(2)
2-(1)
2-(3)
Valve lifter
Valve lifter
Adjusting shim
Valve lifter
Adjusting shim
Adjusting shim
Rocker arm
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
50/75
Engine Proper Adjustment of Valve Clearance
(2/2)
3.Type requiring
adjustment of the
adjusting screw
when adjustingvalve clearance
Adjusting screw Rocker arm
Valve lifer
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
51/75
Engine Proper Scissors Gear Mechanism
(Sub-gear Mechanism)
(1/1)
Backlash
Sub gear
Driven gearSub gear
Driven gear
Drive gear
Drive gear
Sub gear
Scissors spring
Driven gear
Drive gear
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
52/75
Engine Proper Balance Shaft
(1/1)
va, vb: Crankshaft rotational speed
Va, Vb: Piston movable speed
La, Lb: Piston movable distanceva = vb
Va Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
53/75
Engine Proper Timing Chain Auto-tensioner
(1/1)
Chain damper
Timing chain
auto-tensioner
Chain slipper
Chain
Engine
oil
Plunger
Spring
Check ball
CamSpring
Chain auto-tensioner (1NZ-FE engine)
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
54/75
Engine Proper Timing Belt Auto-tensioner
(1/1)
Piston rod
Timing belt auto-tensioner (2JZ-GE engine)
Timing belt
Idler pulley
Spring
Check ball
SpringTiming belt auto-tensioner
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
55/75
Lubrication System Description
(1/2)
Camshaft timing oil control valve
Main oil gallery
Oil return hole
Oil pressure switch
Oil filter
Oil strainer
Oil pump
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
56/75
Lubrication System Description
(2/2)
Main oil gallery
Oil filter
Oil cooler
Oil pump
Oil strainer
Crankshaft
journal
Connecting
rod
Oil jet
Piston
Oil jet
Timing
chain
Chain
tensioner
Cylinder head
Camshaft timing
oil control
valve filter
Intake
camshaft
journal
Exhaust
camshaft
journal
Camshaft timing
oil control valve
VVT-i
controller
Oil pan
Oil flow circuit for 1NZ-FE engine
The oil cooler, outlined with a dotted line, basically is not used on the 1NZ-FE engine.
Here is listed to understand the position of the oil cooler in the f low.
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
57/75
Lubrication System Oil Pump
(1/1)
Drive roter
Driven roter
Relief valve
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
58/75
Lubrication System Oil Filter
(1/1)
Check valve
Element
Relief valve
Oil flow (in)
Oil flow (out)
Oil flow if the relief valve open
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
59/75
Lubrication System Oil Pressure Warning Lamp
(1/1)
1.When the oil pressure is low
[19.6 4.9 kPa (0.2 0.05
kgf/cm2) or lower]/
2.When the oil pressure is high[19.6 4.9 kPa (0.2 0.05
kgf/cm2) or higher]
Oil pressure warning lamp
Low engine oil level warning lamp
Oil pressure switch
Oil pressure
(Normal)
ECU
Warning lamp
Oil temp. switch
Oil level sensorOil pan
Oil level(Normal)
Warning lamp
Oil
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
60/75
Lubrication System Oil Pressure Warning Lamp
(1/1)
1.When the oil pressure is low
[19.6 4.9 kPa (0.2 0.05
kgf/cm2) or lower]/
2.When the oil pressure is high[19.6 4.9 kPa (0.2 0.05
kgf/cm2) or higher]
Oil pressure warning lamp
Low engine oil level warning lamp
Warning lamp
Oil pressure switch
Oil pressure
(Low)
ECU
Warning lamp
Oil temp. switch
Oil level sensorOil pan
Oil level(Low)
Oil
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
61/75
Lubrication System Oil Cooler
(1/1)
Water bypass hose
Oil cooler
Oil filter
Engine coolant
Oil cooler
Oil filter
From Oil pump
to Main oil gallery
Relief valve
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
L b i ti S t
-
7/26/2019 Gasoline Engine.ppt
62/75
Lubrication System Oil Consumption
(1/1)The gap between the cylinder and the piston
The gap between the valve guide bushing and valve stem
Loss due to oil contained in blow-by gas
PCVvalve
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
C li S t
-
7/26/2019 Gasoline Engine.ppt
63/75
Cooling System Description
(1/1)
1.Cooling system
to Radiator
from Heater core
from Radiator
Bypass passage Cylinder head
Water pump
Thermostat
Cylinder blockThrottle body
Radiator
Heater core
to Heater coreto Throttle body
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
C li S t
-
7/26/2019 Gasoline Engine.ppt
64/75
Cooling System Flow of Engine Coolant
(1/1)
1.Thermostat in water inlet
type (With bypass valve)
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
C li S t
-
7/26/2019 Gasoline Engine.ppt
65/75
Cooling System Thermostat
(1/1)
With bypass valve Without bypass valve
Main valve
Cylinder
Bypass valveWax
Main valve
Jiggle valve
Jiggle valve
WaxCylinder
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System W P
-
7/26/2019 Gasoline Engine.ppt
66/75
Cooling System Water Pump
(1/1)
V-ribbed belt Bearing Mechanical seal
Cylinderblock
Swirl
chamber
Rotor
Water pump pully Water drain hole
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System El t i M t d i C li F
-
7/26/2019 Gasoline Engine.ppt
67/75
Cooling System Electric Motor-driven Cooling Fan
(1/2)
1.Outline
Cooling fan
Fan motor
Water temperature switch
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System El t i M t d i C li F
-
7/26/2019 Gasoline Engine.ppt
68/75
Cooling System Electric Motor-driven Cooling Fan
(2/2)
2.Operation
Fan relayIgnition switch
Coolant
temp. switch
Coolant temperature
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System T t t ll d Fl id C li
-
7/26/2019 Gasoline Engine.ppt
69/75
Cooling System Temperature-controlled Fluid Coupling
(1/2)
1.Overview
Pulley
Fluid coupling
Cooling fan
Air hot Air warm Air cold
Bimetal spring
Bimetal plate
Front operating chamber
Rear operating chamber
Silicone oil
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System Temperature controlled Fluid Coupling
-
7/26/2019 Gasoline Engine.ppt
70/75
Cooling System Temperature-controlled Fluid Coupling
(2/2)
2.OperationWithout coupling
Fan
speed
Air hot
Air warm
Air cold
0
Air Temperature (HOT) during low speed driving
Air temperature (HOT) during high speed driving
Air temperature (WARM) during high speed driving
Air temperature (COLD) during high speed driving
Fluid coupling shaft speed
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Cooling System Electronically Controlled Hydraulic
-
7/26/2019 Gasoline Engine.ppt
71/75
Cooling System y y
Cooling Fan System
(1/1)
Condenser
Radiator
Cooling fan
Hydraulic
motor
Solenoidvalve
Hydraulic
pump
Reservoir
Oil cooler
Water pump. sensor signal,
Air conditioner signal,
Engine speed signal
ECU
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Inspection Compression Pressure
-
7/26/2019 Gasoline Engine.ppt
72/75
Inspection Compression Pressure
(1/1)
1.Check compression pressure
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
-
7/26/2019 Gasoline Engine.ppt
73/75
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Crankshaft Offset
-
7/26/2019 Gasoline Engine.ppt
74/75
Engine Proper Crankshaft Offset
(1/1)
Combustion pressure Combustion pressure
Piston
Connecting rod
Crankshaft center
Offset
Offset crankshaft Center crankshaft
Diagnosis Technician >> Gasoline Engine >> Gasoline Engine
Engine Proper Striations on the Piston Skirt
-
7/26/2019 Gasoline Engine.ppt
75/75
Engine Proper Striations on the Piston Skirt
(1/1)
Resin coating
Striation finish