SsangYong Korando III (2010 year). Manual — part 120

15-13

0000-00

Coolant temperature

sensor

4) Ignition System Control

(1) Overview

G20DF engine is equipped with the single ignition system. Each spark plug is operated independently

by the ECU and one ignition coil and spark plug are provided for each cylinder.

(2) Components

Input Components

▶

Crankshaft position

sensor

Accelerator pedal position

sensor

Knock sensor

Camshaft position

sensor

Electronic

throttle body

Output Components

▶

15-14

(3) Input/Output for Ignition System

15-15

0000-00

(4) Features

Determines the ignition timing according to input signal

The ECU always analyzes the following elements when determining the ignition timing.

1.

Crankshaft position sensor

Camshaft position sensor

Coolant temperature sensor

Intake air temperature/air mass

-

-

-

-

Warm-up of catalytic converter

The ignition timing is retarded for about 20 seconds to operate the catalytic converter according to the

operating temperature under the following conditions:

2.

The coolant temperature is 15°C ~ 40°C at starting.

The idle speed is increased by the idle speed control to help warming up of the catalytic converter

-

-

Idle speed control
The ignition timing can be retarded up to 36° or advanced up to 20˚ to help idle speed control.

The ignition timing control can be performed faster than the control through the throttle valve.

Fuel cut-off in deceleration

The ignition timing is retarded temporarily to prevent abrupt increase of the torque when the

combustion is restarted.

Intake air temperature/coolant temperature

The ignition timing is retarded to prevent knocking if the intake air temperature or coolant temperature

is high. The ignition timing is retarded in the following cases.

3.

4.

5.

The intake air temperature is above 30°C.
The coolant temperature is above 105°C.

-

-

The ignition timing retard for intake air temperature and for coolant temperature is added up for

correction.

ESP/ASR control mode

The ignition timing is retarded to reduce engine torque as fast as possible under the ESP/ASR

control mode.

Knocking control

If knocking occurs in the cylinder, the ignition angle of the corresponding cylinder is retarded. The
coolant temperature is 15˚C to 40˚C when starting.

6.

7.

15-16

5) Warm-Up of Catalytic Converter

(1) Components

Input Components

▶

T-MAP sensor

Coolant temperature

sensor

Crankshaft position

sensor

Output Components

▶