ENGINE CONTROL SYSTEM [SKYACTIV-G 2.5]

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Outline

• L-jetronic^*1 and D-jetronic^*2 type detectors have been combined for intake air amount detection, improving the accuracy of the intake air amount measurement.

― MAF sensor adopted

― MAP sensor adopted

― IAT sensor No.1 and No.2 adopted

• Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.

Intake side: Electric variable valve timing control

― Intake CMP sensor adopted

― Electric variable valve timing motor/driver adopted

― Electric variable valve timing relay adopted

Exhaust side: Hydraulic variable valve timing control

― Exhaust CMP sensor adopted

• Engine oil variable control has been adopted reducing engine load.

― Engine oil solenoid valve adopted

• The engine coolant control valve adjusts the engine coolant control valve opening angle and supplies engine coolant to the appropriate engine coolant passage according to the changes in the engine coolant temperature.

• Further engine warming has been promoted by blocking each water passage while the engine is cool.

― Coolant control valve adopted

• DC-DC converter control has been adopted for improved power supply stability.

― DC-DC converter adopted

• With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy.

― Fuel pump control module adopted

• Generator output control adopted, fuel economy/idling stability improved. (with i-stop system)

― Current sensor adopted

• With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.

• LIN communication has been adopted to the current sensor (with i-stop system) and DC-DC converter for simplified wiring harnesses.

*1 :Measures the intake air amount directly using the MAF sensor.

*2 :Measures the intake air pressure introduced into the cylinder using the MAP sensor and calculates the intake air amount indirectly.

Structural View

Input device

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*1 :With i-stop system

*2 :With air conditioner

*3 :IG1 relay

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Output device

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*1 :Fuel pump relay, starter relay, electric variable valve timing relay, fuel injector relay, main relay, A/C relay, cooling fan relay No.1, cooling fan relay No.2, cooling fan relay No.3

*2 :With i-stop system

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System Diagram

Input device

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Output device

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System Wiring Diagram

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Block Diagram

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*1 :TCM (ATX), DSC HU/CM, front body control module (FBCM), rear body control module (RBCM), instrument cluster, start stop unit, EPS control module

Relation Chart

• Each control system and their related input and output parts are as follows.

×: Applicable

Item

Input device

APP sensor No.1, No.2

×

×

×

×

×

×

×

×

×

TP sensor No.1, No.2

×

×

×

×

MAF sensor

×

×

×

×

×

×

×

×

×

×

IAT sensor No.1

×

×

×

×

×

×

×

IAT sensor No.2

×

×

×

×

×

MAP sensor

×

×

×

×

×

×

CKP sensor

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Intake CMP sensor

×

×

×

×

×

Exhaust CMP sensor

×

×

×

×

×

×

×

ECT sensor

×

×

×

×

×

×

×

×

×

×

×

×

×

Fuel pressure sensor

×

×

×

×

×

BARO sensor

×

×

×

×

×

×

Ion sensor No.1—No.4

×

×

KS

×

A/F sensor

×

×

HO2S

×

Refrigerant pressure sensor

×

×

IG1 relay

×

×

×

×

×

×

×

×

×

Brake switch (No.1 signal)

×

×

Brake switch (No.2 signal)

×

Transaxle range sensor

×

×

×

×

Power brake unit vacuum sensor

×

Electric variable valve timing motor/driver

×

×

Battery

×

×

×

×

×

×

×

Generator (Stator coil)

×

Engine oil temperature sensor

×

×

×

×

×

Engine oil pressure sensor

×

Coolant control valve position sensor

×

CAN^*1

×

×

×

×

×

×

×

×

×

Output device

Main relay

×

Throttle valve actuator

×

Electric variable valve timing motor/driver

×

Electric variable valve timing relay

×

OCV

×

Fuel injector No.1—No.4

×

Fuel pump control module

×

Fuel pump relay

×

Spill valve control solenoid valve (High pressure fuel pump)

×

Ignition coil No.1—No.4

×

Purge solenoid valve

×

A/F sensor heater

×

HO2S heater

×

A/C relay

×

Cooling fan relay No.1, No.2, No.3

×

Starter relay

×

Generator (Field coil)

×

Engine oil solenoid valve

×

Coolant control valve

×

*1 :TCM, DSC HU/CM, instrument cluster, start stop unit

Item
Input device
APP sensor No.1, No.2		×	×		×			×	×		×	×		×	×
TP sensor No.1, No.2		×			×						×				×
MAF sensor		×	×	×	×		×	×	×	×		×			×
IAT sensor No.1		×		×	×			×	×			×			×
IAT sensor No.2		×		×	×			×							×
MAP sensor		×		×	×			×	×						×
CKP sensor		×	×	×	×	×	×	×	×	×	×	×	×	×	×	×
Intake CMP sensor		×		×	×			×							×
Exhaust CMP sensor		×	×		×		×	×							×	×
ECT sensor		×	×	×	×		×	×	×	×	×	×	×		×	×
Fuel pressure sensor		×			×	×	×								×
BARO sensor		×		×	×				×			×			×
Ion sensor No.1—No.4				×	×
KS								×
A/F sensor					×				×
HO2S					×
Refrigerant pressure sensor											×	×
IG1 relay	×		×		×	×		×		×		×	×		×
Brake switch (No.1 signal)		×													×
Brake switch (No.2 signal)		×
Transaxle range sensor		×			×								×		×
Power brake unit vacuum sensor															×
Electric variable valve timing motor/driver				×											×
Battery			×			×	×	×	×					×	×
Generator (Stator coil)		×
Engine oil temperature sensor		×	×	×												×	×
Engine oil pressure sensor																×
Coolant control valve position sensor																	×
CAN^*1		×			×	×		×			×	×	×	×	×
Output device
Main relay	×
Throttle valve actuator		×
Electric variable valve timing motor/driver				×
Electric variable valve timing relay				×
OCV			×
Fuel injector No.1—No.4					×
Fuel pump control module						×
Fuel pump relay						×
Spill valve control solenoid valve (High pressure fuel pump)							×
Ignition coil No.1—No.4								×
Purge solenoid valve									×
A/F sensor heater										×
HO2S heater										×
A/C relay											×
Cooling fan relay No.1, No.2, No.3												×
Starter relay													×
Generator (Field coil)														×
Engine oil solenoid valve																×
Coolant control valve																	×