Chery Tiggo 5 (T21). Manual — part 104
1
07
SQR484F ENGINE MECHANICAL
Description 07-3
Operation 07-3
Specifications 07-3
Tools 07-12
Description 07-23
Removal 07-24
Inspection 07-24
Installation 07-25
Adjustment 07-25
Removal 07-26
Inspection 07-26
Installation 07-26
Removal 07-27
Inspection 07-27
Installation 07-27
Description 07-28
Removal 07-29
Inspection 07-31
Installation 07-32
Removal 07-36
Installation 07-38
Removal 07-39
Installation 07-40
Removal 07-42
Inspection 07-42
Installation 07-43
Removal 07-44
Installation 07-45
Removal 07-46
Installation 07-47
Description 07-49
Removal 07-50
Inspection 07-53
Installation 07-54
Description 07-55
Removal 07-56
Disassembly 07-57
Inspection 07-58
Assembly 07-61
Installation 07-63
Removal 07-70
Installation 07-77
Description 07-78
Disassembly 07-80
Inspection 07-86
Selection of Bearing Shell
07–
3
07
GENERAL INFORMATION
Description
SQR484F engine has the following features:
Vertical and water-cooled type
In-line DOHC with 4 cylinders
Four valves per cylinder
DVVT
Aluminum cylinder head
Aluminum cylinder block
Aluminum crankshaft frame
Operation
SQR484F engine adopts vertical, in-line 4-cylinder, water-cooled, 4-stroke, four valves per cylinder, DOHC,
DVVT, electronic controlled sequential multiport fuel injection and natural aspiration. The engine is made of
whole aluminum and adopts electronic controlled coil double ignition system.
Aluminum oil pan is fixed to the bottom of crankshaft frame with bolts. Aluminum cylinder head is fixed on the
cylinder block with bolts. Camshafts are installed in the cylinder head. Power output from the crankshaft drives
the camshaft to rotate by crankshaft timing pulley and timing belt to make the camshaft interact with valve
hydraulic lifter to open and close. Piston assembly is an aluminum piston with cast iron connecting rod. This
engine has reliable structure and good performance.
Specifications
SQR484F Engine Specifications
Item
Specification
Engine Type
Vertical, in-line 4-cylinder, water-cooled, 4-stroke, DOHC, electronic
controlled sequential multiport fuel injection, Variable Valve Timing (VVT)
Engine Model
SQR484F
Valve Number Per Cylinder
4
Cylinder Diameter (mm)
83.5
Piston Stroke (mm)
90
Displacement (L)
1.971
Compression Ratio
10:1
Combustion Chamber Type
Pentroof type
Fuel Supply Type
Electronic controlled sequential multiport fuel injection
Ignition Type
Electrical control
Ignition Sequence
1 - 3 - 4 - 2
Idle Speed (r/min)
750 ± 50
Rated Power (kW)
102
Rated Power Speed (r/min)
5750
Max. Torque (N·m)
182
Max. Torque Speed (r/min)
4300 - 4500
07–
4
07
Max. Permissible Speed (r/min)
5800
Min. Fuel Consumption Rate
(g/kW·h)
250
Oil and Fuel Consumption
Percentage
≤ 0.15
Fuel Octane Number (Not Less
Than)
Unleaded gasoline, octane number 93
Oil Octane Number
In Summer
SAE 10W-40 (SM grade or higher)
In Winter
SAE 5W-40 (SM grade or higher)
Oil Capacity (L)
3.9 ± 0.5
Crankshaft Rotation Direction
Counterclockwise (viewed from cross section of engine flywheel)
Starting Type
Electrical starting
Cooling Type
Forced circulation type antifreeze cooling
Lubrication Type
Compound type (pressure, splash lubrication)
Fuel Pressure (bar)
4
Cylinder Compression
Pressure (bar)
(180 ~ 250) r/min
10 - 13.5
Oil Pressure (kPa)
Low Idling Speed (700 ± 50 r/min)
Higher than 150 kPa
(when oil temperature is 90°C)
High Idle Speed (2000 r/min)
Higher than 360 kPa
(when oil temperature is 90°C)
High Speed (4000 r/min)
Higher than 470 kPa
(when oil temperature is 90°C)
Thermostat Operation
Temperature (°C)
Open Temperature
87 ± 2
Full Open Temperature
102
Net Weight (kg)
148
Boundary Dimension (Length ×
Width × Height) (mm)
641 × 613 × 644
Starting Performance
With atmospheric temperature at -25°C, engine can start smoothly within
30 seconds without taking special measures. Starting test shows that
staring can be performed 3 times consecutively. If it fails to start once,
perform starting again after 2 minutes.
Item
Specification
07–
5
07
Engine Mechanical Specifications
Item
Specification
Camshaft
Cam Height (mm)
Intake Cam
37.65
Exhaust Cam
37.06
Camshaft Journal
Diameter (mm)
Intake
23.947 - 23.960
Exhaust
23.947 - 23.960
Camshaft Axial
Clearance (mm)
Intake
0.15 - 0.20
Exhaust
0.15 - 0.20
Cylinder Head
Lower Surface Flatness (mm)
0.04
Overall Height (mm)
139.83 ± 0.335
Surface Grinding Limit
Grinding is not permitted
Valve
Valve Head Margin
Thickness (mm)
Intake Valve
0.9
Exhaust Valve
0.7
Valve Stem Diameter
(mm)
Intake Valve
5.98 ± 0.008
Exhaust Valve
5.96 ± 0.008
Grommet Width (mm)
Intake Valve
2.263
Exhaust Valve
2.828
Clearance Between
Valve Stem and Guide
(mm)
Intake Valve
0.012 - 0.043
Exhaust Valve
0.032 - 0.063
Grommet Cone Angle (°)
Intake Valve
90 - 90.5
Exhaust Valve
90 - 90.5
Height (mm)
Intake Valve
107.998
Exhaust Valve
106.318
Valve Spring
Free Height (mm)
47.7
Operating Preload/Operating Height
260 ± 11 N/41 mm
Valve Guide
Valve Guide Length (mm)
38 ± 0.25
Inner Diameter (mm)
6 - 6.015
Outer Diameter (mm)
11.040 - 11.051
Depression Depth (mm)
16 ± 0.3
Valve Stem Protrusion Amount (mm)
31.497 - 31.515
Piston
Piston Skirt Diameter (mm)
83.455 ± 0.009
Piston Ring
Side Clearance (mm)
First Ring
0.04 - 0.08
Second Ring
0.025 - 0.070
End Gap (mm)
First Ring
0.2 - 0.4
Second Ring
0.4 - 0.6
Height (mm)
First Ring
1.2
Second Ring
1.5
Oil Ring
2.5
-0.01
-0.05
-0.006
-0.050
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