ENGINE [SKYACTIV-G 2.5]

id0100000002dm

Special Features

―  Improvement of mechanical resistance loss

•  Narrowed down crankshaft journal

•  Optimized piston skirt shape

•  Lowered piston ring tension

•  Roller follower adopted

•  Reduction of valve spring load

•  Stabilization of timing chain behavior

•  Optimized engine coolant passage

•  Optimized water pump impeller shape

•  Lowered drive belt tension

•  Optimized oil passage

•  Optimized oil pump shape

•  Oil pump discharging pressure control has been adopted.

―  Improvement of pumping loss

•  Variable valve timing mechanism has been adopted on both sides of intake and exhaust.

―  Coolant control valve adopted

―  Optimized engine coolant passage

―  MAF sensor adopted

―  MAP sensor adopted

―  IAT sensor No.1 and No.2 adopted

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 solenoid valve adopted

―  DC-DC converter adopted

―  Fuel pump control module adopted

―  Current sensor adopted

Specification

Item					Specification
MECHANICAL
Type					Gasoline, 4-cycle
Cylinder arrangement and number					In-line, 4-cylinder
Combustion chamber					Pentroof
Valve system					DOHC, timing chain driven, 16 valves
Displacement		(ml {cc})			2,488 {2,488}
Bore × stroke		(mm {in})			89.0 × 100 {3.50 × 3.94}
Compression ratio					13.0:1
Valve timing		IN	Open	BTDC (°)	-32―42
			Closed	ABDC (°)	100―26
		EX	Open	BBDC (°)	73―18
			Closed	ATDC (°)	1―56
LUBRICATION SYSTEM
Type					Force-fed type
Oil pressure (reference value) [Oil temperature: 80—90 °C {176—194 °F}, coolant temperature: 80—90 °C {176—194 °F}]				(kPa {kgf/cm2, psi}[rpm])	Low oil pressure: 135—165 {1.38—1.68, 19.6—23.9}[1,500] High oil pressure: 225—275 {2.30—2.80, 32.7—39.8}[4,500]
Oil pump	Type				Trochoid gear type
Oil filter	Type				Full-flow, paper element
	Bypass pressure		(kPa {kgf/cm2, psi})		78—118 {0.80—1.20, 12.0—17.1}
Oil capacity (approx. quantity)	Total (dry engine)		(L {US qt, lmp qt})		5.4 {5.7, 4.8}
	Oil replacement		(L {US qt, lmp qt})		4.3 {4.5, 3.8}
	Oil and oil filter replacement		(L {US qt, lmp qt})		4.5 {4.8, 4.0}
COOLING SYSTEM
Type					Water-cooled, Electromotive
Water pump		Type			Centrifugal, V-ribbed belt-driven
Thermostat		Type			Wax type
		Opening temperature		(°C {°F})	103―107 {217―225}
		Full-open temperature		(°C {°F})	115―119 {239―246}
		Full-open lift		(mm {in})	5 {0.2} or more
Radiator		Type			Corrugated fin type
Cooling system cap		Valve opening pressure		(kPa {kgf/cm2, psi})	93.2―122.6 {0.951―1.250, 13.6―17.7}
Cooling fan		Type			Electric type
		Number of blades			Cooling fan No.1: 9 Cooling fan No.2: 11
		Outer diameter		(mm {in})	320 {12.6}
		Cooling fan motor output		(W)	Cooling fan No.1: 90 Cooling fan No.2: 120
FUEL SYSTEM
Fuel injector			Type		High resistance
			Fuel supply method		Top-feed
			Drive types		Electronic type
Pressure regulator control pressure			(kPa {kgf/cm2, psi})		Approx. 450 {4.59, 65.3}
Fuel pump		Type			Electric
Fuel tank		Capacity (L {US qt, lmp qt})		2WD	72.0 {19.0, 15.8}
				4WD	74.0 {19.5, 16.3}
EMISSION SYSTEM
Catalyst		Type			WU-TWC (monolith) TWC (monolith)
EVAP control system		Type			Charcoal canister type
PCV system		Type			Closed type
CHARGING SYSTEM
Battery		Voltage		(V)	12
		Type (with i-stop)			Q-85
		Type and capacity (without i-stop)		(A·h/5HR, A·h/20HR)	55D23L (48, 55) 75D23L (52, 65)
Generator		Output		(V-A)	12-100
		Regulated voltage			Controlled by PCM
		Self diagnosis function
IGNITION SYSTEM
Ignition system		Type			SEI
		Spark advance			Electronic
		Firing order			1—3—4—2 (all cylinders independent firing)
Spark plug		Type			PE5R-18-110 PE5S-18-110
STARTING SYSTEM
Starter		Type			Coaxial reduction
		Output		(kW)
					1.4
CONTROL SYSTEM
i-stop OFF switch					ON/OFF
Neutral switch					ON/OFF
CPP switch					ON/OFF
MAF sensor					Hot film
IAT sensor					Cold resistor
MAP sensor					Sealant diaphragm
TP sensor					Hall element
APP sensor					Hall element
CKP sensor					MR (Magnetic Resistance) element
CMP sensor					GMR element
ECT sensor					Thermistor
BARO sensor					Piezoelectric element
Fuel pressure sensor					Metal diaphragm
KS					Piezoelectric element
Current sensor					Shunt resistance, Thermistor
A/F sensor					Zirconia element
HO2S					Zirconia element
Clutch stroke sensor					Hall element
Power brake unit vacuum sensor					Piezoelectric element
Coolant control valve position sensor					Hall element
Engine oil level sensor					Ultra sonic sensor
Engine oil temperature sensor					Thermistor
Engine oil pressure sensor					Sealant diaphragm

Compression pressure

ac5wzw00011339

Engine oil

Engine coolant capacity (approx. quantity)

Fuel type