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Denso 4M41 User Manual
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00400554E
Common Rail System (HP3)
for MITSUBISHI TRITON
4D56/4M41 Engine
DENSO INTERNATIONAL THAILAND CO., LTD
2
Table of Contents
Default Chapter
4
Default Chapter
4
Table of Contents
4
1 Product Appilcation Information
6
Application
6
System Components Part Number
6
2 Outline of System
7
Common Rail System Characteristics
7
Features of Injection Control
7
Comparison to the Conventional System
8
Composition
8
Control System
9
3 Supply Pump
11
Fuel System
9
Operation
9
Outline
11
Exterior View Diagram
12
Supply Pump Internal Fuel Flow
12
Construction of Supply Pump
13
Operation of the Supply Pump
14
4 Supply Pump Component Parts
16
Feed Pump
16
SCV ( Suction Control Valve )
16
Fuel Temperature Sensor
18
5 Rail
19
Outline
19
6 Rail Components Parts
20
Pressure Limiter
20
7 Injector (G2 Type)
21
Rail Pressure Sensor (Pc Sensor)
20
Characteristics
21
Outline
21
Exterior View Diagram
22
Construction
23
Operation
23
QR Codes
24
Injector Actuation Circuit
26
8 Operation of Control System Components
27
Engine Control System Diagram
27
Engine ECU (Electronic Control Unit)
27
Cylinder Recognition Sensor (TDC)
28
Turbo Pressure Sensor
28
Mass Air Flow Sensor
29
Electronic Control Throttle
30
9 Various Types of Control
32
Fuel Injection Pressure Control Function (Rail Pressure Control Function)
32
Fuel Injection Quantity Control Function
32
Fuel Injection Rate Control Function
32
Fuel Injection Timing Control Function
32
Outline
32
10 Fuel Injection Quantity Control
33
Injection Quantity Calculation Method
33
Outline
33
Set Injection Quantities
33
11 Fuel Injection Timing Control
37
Main and Pilot Injection Timing Control
37
Ouline
37
Microinjection Quantity Learning Control
38
12 Fuel Injection Rate Control
40
Outline
40
Fuel Injection Pressure
41
13 Fuel Injection Pressure Control
41
About the Codes Shown in the Table
42
Diagnostic Trouble Code Details
42
14 Diagnostic Trouble Codes (Dtc)
42
Engine ECU External Wiring Diagram
47
15 External Wiring Diagram
47
Engine ECU Connector Diagram
48
4
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Denso 4M41 Specifications
General
Fuel Type
Diesel
Fuel System
Direct Injection
Aspiration
Turbocharged
Valvetrain
DOHC, 16-Valve
Engine Type
4-Cylinder, Inline
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