SsangYong: Engine Euro 4. Manual - part 28

 

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SsangYong: Engine Euro 4. Manual - part 28

 

 

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

37

2411

EXHAUST SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

I

N

T

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

Fuel Supply Rails

For the D27DT engine with CDPF, the fuel rail with larger diameter and the damping orifice is installed. The fuel rail
with larger diameter is installed as the post injection for CDPF is added to injection processes (pilot injection and
main injection). The diameter of the fuel rail is increased due to the increased amount of fuel injected for post
injection to burn the soot in CDPF.

As the amount of fuel supplied is increased, the orifices are installed on the fuel intake side of common rail and on
the fuel supply side of HP pump to prevent the fuel pulsation.

Fuel Supply Pipe  (Common Rail -Injector): Increase

in I.D and O.D

Fuel Supply Pipe (HPP-Common Rail)
: Increase in I.D and O.D

Common Rail (with Orifice)

Damping orifice

MEMO

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PRE - HEATING SYSTEM

2820 / 1412

TABLE OF CONTENTS

AQGS PREHEATING SYSTEM ............................. 2

1. Components and major changes in preheating system in

D27DTP (POWER UP) engine ........................................... 2

2. Comparison in preheating system circuit (D27DTP

(POWER UP) engine and D27DT engine) ......................... 3

3. Components of preheating system ................................... 4

4. AQGS (Advanced Quick Glow System) unit ..................... 5

5. New DTCs for AQGS (Advanced Quick Glow System) ..... 8

6. Removal and installation of AQGS unit ........................... 11

GLOW PLUG ......................................................... 12

1. Overview ........................................................................... 12

2. Removal and installation of glow plug ............................. 13

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

2

2820

PRE - HEATING SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

For the D27DT engine, the conventional preheating control relay is used. For the D27DTP (POWER UP) engine,
AQGS (Advanced Quick Glow System) is used. The AQGS communicates with engine ECU via CAN communica-
tion and its preheating time and performance are enhanced.

The following information is for the preheating system based on the AQGS in D27DTP (POWER UP) engine.

1. COMPONENTS AND MAJOR CHANGES IN PREHEATING SYSTEM

IN D27DTP (POWER UP) ENGINE

AQGS PREHEATING SYSTEM

Battery

AQGS unit

Glow plug

AQGS Unit

Connector for

power supply

Connector for

control

Preheat Warning Light (Indicator)

Engine ECU

Glow Plug

The preheating time, temperature range and
tip shape are different from the glow plug for
D27DT engine.

Cluster,

Immobilizer..

CAN-H

CAN-L

Tightening torque:

15 ± 3Nm

 

 

 

 

 

 

 

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