ENGINE CONTROL SYSTEM [SKYACTIV-D 2.2]

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Outline

• Two-step boost control has been adopted, realizing low emission, low fuel consumption, high torque, and high response.

― Variable geometry turbocharger adopted

― Regulating valve actuator adopted

― Actuator of turbocharger with variable turbine geometry adopted

• Glow control has been adopted to improve engine startability and diesel particulate filter regeneration performance.

― Glow control module adopted

• Engine hydraulic pressure switching control has been adopted reducing engine load.

― Engine oil solenoid valve adopted

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

― DC-DC converter adopted

• Generator output control adopted, fuel economy/idling stability improved.

― Current sensor adopted

• SCR control has been adopted which purifies contaminants in the exhaust gas by utilizing chemical reactions. (with SCR system)

― SCR converter adapted

― Dosing control unit adapted

• Urea injector adapted

• NOx sensor No.1, No.2 adapted

• PM sensor adapted

• Urea temperature sensor/Urea level sensor adapted

― Exhaust gas temperature sensor No.4, No.5 adapted

• i-art (intelligent accuracy refinement technology) has been adopted for improved fuel injection precision.

― Fuel injector adapted (integrated with fuel pressure sensor/fuel temperature sensor)

Structural View

Input device

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*1 :With SCR system

Output device

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*1 :Main relay, blow-by heater relay, starter relay, A/C relay

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System Diagram

Input device

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Output device

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System Wiring Diagram

PCM

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Dosing Control Unit (With SCR System)

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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

Dosing control unit

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Relation Chart

×: Applicable

Item	MAIN RELAY CONTROL	IDLE SPEED CONTROL	TWO-STAGE TURBO CONTROL	FUEL INJECTION AMOUNT CONTROL	MULTIPLE FUEL INJECTION CONTROL	FUEL INJECTION TIMING CONTROL	FUEL PRESSURE CONTROL	INTAKE SHUTTER VALVE CONTROL	COOLANT CONTROL VALVE CONTROL	GLOW CONTROL	EGR CONTROL	AIR FUEL RATIO (A/F) SENSOR HEATER CONTROL	DIESEL PARTICULATE FILTER REGENERATION CONTROL	A/C CUT-OFF CONTROL	ELECTRICAL FAN CONTROL	STARTER CUT-OFF CONTROL	GENERATOR CONTROL	RUN DRY PREVENTION (RDP) CONTROL	BLOW-BY HEATER CONTROL	ENGINE OIL CONTROL	i-stop CONTROL	DC-DC CONVERTER CONTROL	SCR CONTROL
Input device
Check connector													×	×
IG1 relay	×		×		×			×	×	×						×					×	×
Brake switch (No.1, No.2 signal)																					×
Glow control module										×
IAT sensor No.1, No.2		×	×	×	×	×	×	×	×	×	×	×	×				×				×		×
MAP sensor No.1, No.2		×	×	×		×	×	×			×		×										×
ECT sensor		×	×	×	×	×	×	×	×	×	×	×	×	×	×	×				×	×		×
Fuel temperature sensor				×			×
Boost air temperature sensor			×				×				×		×										×
APP sensor No.1, No.2		×	×	×	×	×	×	×	×		×		×	×							×
MAF sensor			×	×	×	×	×	×			×		×										×
Fuel pressure sensor				×		×	×						×
Intake shutter valve position sensor							×	×			×		×								×
EGR cooler bypass valve position sensor			×				×	×			×		×								×
EGR valve position sensor			×				×	×			×		×								×
Exhaust gas pressure sensor No.1, No.2		×	×			×		×		×	×		×										×
BARO sensor		×	×	×	×	×	×	×		×	×		×								×		×
Battery			×						×	×		×			×		×				×		×
Refrigerant pressure sensor		×												×	×
Exhaust gas temperature sensor No.1, No.2, No.3			×	×	×	×	×	×			×	×	×										×
Engine oil temperature sensor		×					×		×											×
Engine oil pressure sensor		×					×						×
Regulating valve actuator position sensor			×										×								×
Variable turbine geometry turbocharger actuator position sensor			×
Coolant control valve position sensor									×
Ambient temperature sensor																			×
A/F sensor				×	×	×	×	×			×												×
Power brake unit vacuum sensor																					×
CKP sensor	×	×	×	×	×	×	×	×	×	×	×	×	×	×		×	×		×	×	×		×
CMP sensor				×	×	×	×	×			×										×		×
Transaxle range sensor (ATX)		×		×	×			×					×								×
Back-up light switch (MTX)		×		×	×	×		×					×			×					×
Neutral switch No.1 (MTX)		×		×	×	×		×					×	×		×	×				×
CPP switch (MTX)		×		×	×	×		×					×			×	×				×
Starter interlock switch (MTX)																					×
Neutral switch No.2 (MTX)																					×
Clutch stroke sensor (MTX)																					×
CAN^*2		×		×	×	×	×	×	×	×	×		×	×	×	×	×	×			×	×
LIN										×
Output device
Intake shutter valve							×	×					×								×
EGR cooler bypass valve							×				×		×								×
EGR valve							×				×		×								×
Fuel pressure relief valve							×														×
Main relay	×
Regulating valve actuator			×										×								×
Variable turbine geometry turbocharger actuator			×										×								×
Compressor bypass solenoid valve			×										×								×
A/F sensor heater												×									×
Starter relay																×					×
Generator (Field coil)		×															×				×
A/C relay														×
Cooling fan relay No.1, No.2															×
Engine oil solenoid valve													×							×
Suction control valve							×														×
Fuel injector No.1—No.4		×		×	×	×							×					×			×
Blow-by heater relay																			×
OCV													×
DC-DC converter																	×					×
Instrument cluster																							×
Glow plug No.1—No.4													×
Coolant control valve									×

*1 :Intake stroke EGR using double exhaust valve actuation system

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

Dosing control unit

×: Applicable

Item	SCR CONTROL
Input device
NOx sensor No.1, No.2	×
Urea temperature sensor	×
Urea level sensor	×
Urea quality sensor	×
Output device
Urea injector	×
Urea pump (feed pump, back flow pump)	×
Urea tank heater	×
Urea hose (built in heater)	×