ENGINE CONTROL SYSTEM [SKYACTIV-G 2.0]

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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

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

― Fuel pump control module adopted

*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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Output device

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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, BCM, ESU, instrument cluster, EPS control module

Relation Chart

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

×: Applicable

Item

MAIN RELAY CONTROL

DRIVE-BY-WIRE CONTROL

HYDRAULIC VARIABLE VALVE TIMING CONTROL

ELECTRIC VARIABLE VALVE TIMING CONTROL

FUEL INJECTION CONTROL SYSTEM

FUEL PUMP CONTROL

HIGH PRESSURE FUEL PUMP CONTROL

ELECTRONIC SPARK ADVANCE CONTROL

PURGE CONTROL

AIR FUEL RATIO (A/F) SENSOR HEATER CONTROL

HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL

A/C CUT-OFF CONTROL

ELECTRICAL FAN CONTROL

STARTER CUT-OFF CONTROL

INTEGRATED STARTER GENERATOR (ISG) CONTROL

i-stop CONTROL

ENGINE OIL VARIABLE CONTROL

WATER FLOW CONTROL

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 No.1, No.2

×

×

×

×

×

×

×

×

×

×

×

Fuel pressure sensor

×

×

×

×

BARO sensor

×

×

×

×

×

×

Electronically controlled brake unit

×

×

Engine oil temperature sensor

×

×

×

×

Coolant control valve position sensor

×

Ion sensor No.1—No.4

×

×

KS

×

A/F sensor

×

×

HO2S

×

Refrigerant pressure sensor No.1, No.2

×

×

IG1 relay No.1, No.2

×

×

×

×

×

×

×

×

×

×

Brake switch (No.1, No.2 signal)

×

×

Transaxle range sensor

×

×

×

×

Electric variable valve timing motor/driver

×

×

Battery

×

×

×

×

×

×

×

×

ISG

×

Mazda M Hybrid battery

×

×

DC-DC converter (Mazda M Hybrid)

×

Stroke 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

×

×

Sub relay

×

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

×

Starter relay

×

×

ISG

×

×

DC-DC converter (Mazda M Hybrid)

×

Engine oil solenoid valve

×

Coolant control valve

×

*1 :TCM, electronically controlled brake unit, BCM, ESU, instrument cluster, EPS control module

Item	MAIN RELAY CONTROL	DRIVE-BY-WIRE CONTROL	HYDRAULIC VARIABLE VALVE TIMING CONTROL	ELECTRIC VARIABLE VALVE TIMING CONTROL	FUEL INJECTION CONTROL SYSTEM	FUEL PUMP CONTROL	HIGH PRESSURE FUEL PUMP CONTROL	ELECTRONIC SPARK ADVANCE CONTROL	PURGE CONTROL	AIR FUEL RATIO (A/F) SENSOR HEATER CONTROL	HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL	A/C CUT-OFF CONTROL	ELECTRICAL FAN CONTROL	STARTER CUT-OFF CONTROL	INTEGRATED STARTER GENERATOR (ISG) CONTROL	i-stop CONTROL	ENGINE OIL VARIABLE CONTROL	WATER FLOW CONTROL
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 No.1, No.2		×			×		×	×	×			×	×	×		×	×	×
Fuel pressure sensor		×			×		×									×
BARO sensor		×		×	×				×				×			×
Electronically controlled brake unit															×	×
Engine oil temperature sensor		×	×	×														×
Coolant control valve position sensor																		×
Ion sensor No.1—No.4				×	×
KS								×
A/F sensor					×				×
HO2S					×
Refrigerant pressure sensor No.1, No.2												×	×
IG1 relay No.1, No.2	×		×		×	×		×		×	×		×	×		×
Brake switch (No.1, No.2 signal)		×														×
Transaxle range sensor		×			×									×		×
Electric variable valve timing motor/driver				×												×
Battery			×			×	×	×	×						×	×		×
ISG		×
Mazda M Hybrid battery															×	×
DC-DC converter (Mazda M Hybrid)															×
Stroke 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					×											×
Sub relay					×
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													×
Starter relay														×		×
ISG															×	×
DC-DC converter (Mazda M Hybrid)																×
Engine oil solenoid valve																	×
Coolant control valve																		×