ENGINE [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)]


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Special Features

•  For SKYACTIV-G 2.0 and SKYACTIV-G 2.5 (without cylinder deactivation), the following is performed to lower fuel consumption.
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―  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.
•  Cooling loss improvement (with coolant control valve)
―  Coolant control valve adopted
―  Optimized engine coolant passage
•  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 control*3 has been adopted reducing engine load.
•  Engine oil variable control*4 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
•  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.
―  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 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.
*3  :Without coolant control valve
*4  :With coolant control valve

Specification

Item

Specification

SKYACTIV-G 2.0

SKYACTIV-G 2.5

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})
1,998 {1,998}
2,488 {2,488}
Bore × stroke
(mm {in})
83.5 × 91.2 {3.29 ×3.59}
89.0 × 100 {3.50 × 3.94}
Compression ratio [European (U.K.) specs.]
13.0:1/14.0:1
13.0:1
Valve timing
IN
Open
BTDC (°)
-32―42
Closed
ABDC (°)
110―36 (without coolant control valve)
100―26 (with coolant control valve)
EX
Open
BBDC (°)
54―9 (without coolant control valve)
65―10 (with coolant control valve)
58―13 (without coolant control valve)
73―18 (with coolant control valve)
Closed
ATDC (°)
7―52 (without coolant control valve)
1―56 (with coolant control valve)
6―51 (without coolant control valve)
1―56 (with coolant control valve)
LUBRICATION SYSTEM
Type
Force-fed type
Oil pressure (reference value)
[Coolant temperature: 80—90 °C {176—194 °F}] (Without coolant control valve)
(kPa {kgf/cm2, psi}[rpm])
Low oil pressure: 110―175 {1.13―1.78, 16.0―25.3}[1,500]
High oil pressure: 300―430 {3.06―4.38, 43.6―62.3}[4,500]
Oil pressure (reference value)
[Oil temperature: 80—90 °C {176—194 °F}, coolant temperature: 80—90 °C {176—194 °F}] (With coolant control valve)
(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 (without coolant control valve)
Vane pump type (with coolant control valve)
Oil filter
Type
Full-flow, paper element
Bypass pressure
(kPa {kgf/cm2, psi})
78—118 {0.80—1.20, 12.0—17.1}
COOLING SYSTEM
Type
Water-cooled, Electromotive
Water pump
Type
Centrifugal, V-ribbed belt-driven
Thermostat
Type
Wax type
Opening temperature
(°C {°F})
86.5―89.5 {188―193}
Full-open temperature
(°C {°F})
100 {212}
Full-open lift
(mm {in})
8.5 {0.33} 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: 5
Cooling fan No.2: 7
Outer diameter
(mm {in})
320 {12.6}
Cooling fan motor output
(W)
80
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. 430 {4.38, 62.4}
Fuel pump
Type
Electric
Fuel tank
Capacity
(L {US gal, lmp gal})
2WD
56.0 {14.8, 12.3}
4WD
58.0 {15.3, 12.8}
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/20HR)
55D23L (55)
75D23L (65)
Generator
Output
(V-A)
12-100
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)
Without i-stop: 1.0
1.4
With i-stop: 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 [SKYACTIV-G 2.0, Without coolant control valve, European (L.H.D. U.K.) specs.]

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 164 kPa {1.67 kgf/cm2, 23.8 psi}[250 rpm]

Compression pressure [SKYACTIV-G 2.0, Without coolant control valve, Except European (L.H.D. U.K.) specs.] (Compression ratio of 13)

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 148 kPa {1.51 kgf/cm2, 21.5 psi}[250 rpm]

Compression pressure [SKYACTIV-G 2.0, Without coolant control valve, Except European (L.H.D. U.K.) specs.] (Compression ratio of 14)

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 164 kPa {1.67 kgf/cm2, 23.8 psi}[250 rpm]

Compression pressure [SKYACTIV-G 2.0, With coolant control valve]

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 116 kPa {1.18 kgf/cm2, 16.8 psi}[250 rpm]

Compression pressure [SKYACTIV-G 2.5, Without coolant control valve]

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 160 kPa {1.63 kgf/cm2, 23.2 psi}[250 rpm]

Compression pressure [SKYACTIV-G 2.5, With coolant control valve]

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Standard: Refer to the graph.
Minimum: Refer to the graph.
Maximum difference between cylinders: 149 kPa {1.52 kgf/cm2, 21.6 psi}[250 rpm]

Engine oil [Europe and Taiwan]

Item

Specifications

Engine oil capacity [SKYACTIV-G 2.0] (approx. quantity)
Oil replacement
4.0 L {4.2 US qt, 3.5 Imp qt}
Oil and oil filter replacement
4.2 L {4.4 US qt, 3.7 lmp qt}
Total (dry engine)
4.9 L {5.2 US qt, 4.3 Imp qt}
Engine oil capacity [SKYACTIV-G 2.5] (approx. quantity)
Oil replacement
4.3 L {4.5 US qt, 3.8 lmp qt}
Oil and oil filter replacement
4.5 L {4.8 US qt, 4.0 lmp qt}
Total (dry engine)
5.4 L {5.7 US qt, 4.8 Imp qt}
Recommended engine oil
Mazda Original Oil Supra 0W-20
Mazda Original Oil Ultra 5W-30
Alternative engine oil
API SN*1 or ACEA A5/B5
0W-20, 5W-30

*1  :Use API SM/SN in Kazakhstan.

Engine oil [Except Europe and Taiwan]

Item

Specifications

Engine oil capacity [SKYACTIV-G 2.0] (approx. quantity)
Oil replacement
4.0 L {4.2 US qt, 3.5 Imp qt}
Oil and oil filter replacement
4.2 L {4.4 US qt, 3.7 lmp qt}
Total (dry engine)
4.9 L {5.2 US qt, 4.3 Imp qt}
Engine oil capacity [SKYACTIV-G 2.5] (approx. quantity)
Oil replacement
4.3 L {4.5 US qt, 3.8 lmp qt}
Oil and oil filter replacement
4.5 L {4.8 US qt, 4.0 lmp qt}
Total (dry engine)
5.4 L {5.7 US qt, 4.8 Imp qt}
Grade
API SL/SM/SN or ILSAC GF-3/GF-4/GF-5

Engine coolant capacity (approx. quantity)

Item

Capacity

SKYACTIV-G 2.0
MTX
L.H.D.
7.1 L {7.5 US qt, 6.2 Imp qt}
R.H.D.
7.0 L {7.4 US qt, 6.2 Imp qt}/6.9 L {7.3 US qt, 6.1 Imp qt}
ATX
L.H.D.
7.4 L {7.8 US qt, 6.5 Imp qt}
R.H.D.
7.2 L {7.6 US qt, 6.3 Imp qt}
SKYACTIV-G 2.5
L.H.D.
7.4 L {7.8 US qt, 6.5 Imp qt}/7.5 L {7.9 US qt, 6.6 Imp qt}
R.H.D.
7.2 L {7.6 US qt, 6.3 Imp qt}/7.3 L {7.7 US qt, 6.4 Imp qt}

Fuel type

Fuel

Research Octane Number

Country

Premium unleaded fuel (Conforming to EN 228 and within E10)*1
95 or above
New Caledonia, Turkey, Azerbaijan, Armenia, Georgia, Kazakhstan, Canary Islands, Reunion, Morocco, Austria, Greece, Italy, Switzerland, Belgium, Denmark, Finland, Norway, Portugal, Spain, Sweden, Hungary, Germany, Poland, Bulgaria, Croatia, Slovenia, Luxembourg, Slovakia, Latvia, Lithuania, Russia, Belarus, France, Ukraine, Czech, Estonia, Faeroe, Iceland, Romania, The Netherlands, Macedonia, Bosnia and Herzegovina, Serbia, Montenegro, Albania, Moldova, Martinique, F.Guiana, Guadeloupe, Cyprus, Malta, Ireland, UK, Taiwan, Tahiti, Vanuatu, Iran, UAE, Lebanon, Israel, Algeria, Libya, Tunisia, Madagascar, Guatemala, Bolivia, Uruguay, Honduras, Nicaragua, Aruba, St. Martin, Singapore, Hong Kong, Malaysia, Brunei, Macau, Mauritius, South Africa, Jamaica, Barbados, Grenada, ST. Lucia, ST. Vincent, Antigua, Suriname, Mongolia, Seychelles, Namibia, Botswana, Swaziland, Lesoto, Liechtenstein, Andorra, Monaco, Vatican, San Marino
Regular unleaded fuel (Conforming to Fuel Quality Standards Act 2000)*2
92 or above
Egypt, Myanmar
90 or above
The Philippines, Marshall Islands, Ustt*3, Kuwait, Oman, Qatar, Saudi Arabia, Syria, Bahrain, Jordan, Nigeria, Angola, Chile, El Salvador, Costa Rica, Ecuador, Haiti, Colombia, Dominican Republic (LHD), Panama, Peru, B.Virgin, Curacao, Indonesia, Nepal, Sri Lanka, Fiji, Papua New Guinea, Kenya, Zimbabwe, Trinidad and Tobago, Commonwealth of Dominica, Cambodia, Iraq, Ivory Coast, Australia, New zeland, Laos, Cameroon, Burundi, Gabon, Ghana, Tanzania, Mozambique

*1  :Europe
*2  :Australia
*3  :Republic of Palau & Federated States of Micronesia