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| Home / Car Engines / Nissan Engines / Nissan HR12DE |
Nissan HR12DE Engine Specifications
The Nissan HR12DE is a 1.2 l (1,198 cc, 73.11 cubic
inches) straight three, four-stroke naturally aspirated internal
combustion gasoline engine from Nissan HR family.
The engine has a cast aluminum engine block with four main bearings and
aluminum DOHC (dual overhead camshaft) cylinder head with four valves
per cylinder. This motor is equipped with Continuous Variable Valve
Timing Control System (CVTCS), multi-point fuel injection system and
electronic, distributor less type ignition system with individual
ignition coil for each cylinder.
Cylinder bore is 78.0 mm (3.07 in) and piston stroke is 83.6 mm (3.29
in), compression ratio rating is 10.7:1 or 12:1. The Nissan HR12DE engine
producted from 78.9 PS (58 KW; 77.8 HP) at 5,600 rpm to 84.3 PS (62 KW;
83.1 HP) at 6,000 rpm of max power and from 103 Nm (10.5 kgm; 76.0
lb-ft) at 5,200 rpm to 110 Nm (11.2 kgm; 81.2 lb-ft) at 4,000 rpm of
peak torque.
Engine code identification:
HR - Engine Family
12 - 1.2 Liter Displacement
D - DOHC (Dual Overhead Camshafts)
E - Electronic Port Fuel Injection
| GENERAL TECHNICAL DATA |
Engine model ............... HR12DE
Cylinder layout ............... Four stroke, Inline-3 (Straight-3)
Fuel type ............... Gasoline
Production years ............... 2010-
Total displacement ............... 1.2 L, 1,198 cm3 (73.11 cubic inches)
Fuel system ............... Multi-point fuel injection system
Power adder ............... None
Maximum power ............... 78.9 PS (58 KW; 77.8 HP) at 5,600 rpm
78.9 PS (58 KW; 77.8 HP) at 6,000 rpm
80.2 PS (59 KW; 79.1 HP) at 6,000 rpm
84.3 PS (62 KW; 83.1 HP) at 6,000 rpm
Maximum torque ............... 103 Nm (10.5 kgm; 76.0 lb-ft) at 5,200
rpm
106 Nm (10.8 kgm; 78.2 lb-ft) at 4,400 rpm
108 Nm (11.0 kgm; 79.7 lb-ft) at 4,400 rpm
110 Nm (11.2 kgm; 81.2 lb-ft) at 4,000 rpm
Firing order ............... 1-3-2
Dimensions (L x H x W) ............... No data available
Weight ............... No data available
| CYLINDER BLOCK |
The HR12DE engine has an aluminum cylinder block with four bearing support
system. Cylinders are fitted at an offset
to minimize friction arising from the angle of the connecting rod as a
piston descends into the cylinder. The engine has cracking-processed
connecting rods. Each piston is equipped with two compression and single
oil control ring. The crankshaft and camshaft journals are finished with
a polishing tape to produce a mirror-like finish.
Cylinder block (after 2006)
Cylinder block alloy ............... Aluminium
Compression ratio ............... 10.7:1 or 12.0:1 (Depends on vehicle
model)
Cylinder bore ............... 78.0 mm (3.071 in)
Piston stroke ............... 83.6 mm (3.291 in)
Number of piston rings (compression / oil) ............... 2 / 1
Number of main bearings ............... 4
Cylinder inner diameter (standard) ............... 78.000-78.015 mm
(3.0709-3.0715 in)
Piston skirt diameter (standard) ............... 77.965-77.980 mm
(3.0695-3.0701 in)
Piston pin outer diameter ............... 18.996-19.002 mm
(0.7479-0.7481 in)
Piston ring side clearance ............... Top ...............
0.040-0.080 mm (0.0016-0.0031 in)
Second ............... 0.030-0.070 mm (0.0012-0.0028 in)
Oil ............... 0.045-0.125 mm (0.0018-0.0049 in)
Piston ring end gap ............... Top ............... 0.20-0.30 mm
(0.0079-0.0118 in)
Second ............... 0.35-0.50 mm (0.0138-0.0197 in)
Oil ............... 0.20-0.60 mm (0.0079-0.0236 in)
Connecting rod center distance ............... 129.84-129.94 mm
(5.1118-5.1157 in)
Crankshaft journal diameter ............... 47.979-47.978 mm
(1.8889-1.8889 in)
Crankpin diameter ............... 39.971-39.970 mm (1.5737-1.5736 in)
| CYLINDER HEAD |
The cylinder head is made of strong, light aluminum alloy which gives it
good cooling efficiency. The HR12DE has variable valve timing system
(C-VTC) on the intake camshaft. Intake valves are 31.0 mm (1.22 in) in
diameter, intake duration is 228 deg, and the exhaust valves are 25.5 mm
(1.00 in), exhaust duration is 208 deg. The HR16DE does not have
hydraulic lifters, so special valve lifters are used to adjust the valve
clearance.
Cylinder head (after 2006)
Valve Arrangement ............... DOHC, chain drive
Cylinder head height ............... 125.0 mm (4.92 in)
Valves ............... 12 (4 valves per cylinder)
Valve timing ............... INTAKE ............... 228 deg
EXHAUST ............... 208 deg
Valve head diameter ............... INTAKE ............... 31.0-31.3 mm
(1.220-1.232 in)
EXHAUST ............... 25.3-25.6 mm (0.996-1.007 in)
Valve length ............... INTAKE ............... 101.73 mm (4.01 in)
EXHAUST ............... 102.49 mm (4.04 in)
Valve stem diameter ............... INTAKE ............... 4.965-4.980
mm (0.1955-0.1961 in)
EXHAUST ............... 4.955-4.970 mm (0.1951-0.1957 in)
Valve spring free length ............... 42.26 mm (1.6638 in)
Camshaft cam height ............... INTAKE ............... 40.915-41.105
mm (1.6419-1.6494 in)
EXHAUST ............... 40.175-40.365 mm (1.5817-1.5892 in)
Outer camshaft journal diameter ............... №1 ...............
27.935-27.955 mm (1.0998-1.1006 in)
№2, 3, 4 ............... 24.950-24.970 mm (0.9823-0.9831 in)
Head tightening procedure and torque specs:
Step 1: 40 Nm; 4.1 kgm; 30 lb-ft
Step 2: Turn all bolts 60 deg
Step 3: Loosen all bolts completely
Step 4: 40 Nm; 4.1 kgm; 30 lb-ft
Step 5: Turn all bolts 75 deg
Step 6: Turn all bolts another 75 deg
Camshaft sprocket bolt
78.4 Nm; 8.0 kgm; 58 lb-ft
| MAINTENANCE DATA |
Valve clearance (HOT)
Intake valve ............... 0.304-0.416 mm (0.012-0.016 in)
Exhaust valve ............... 0.308-0.432 mm (0.012-0.017 in)
Compression pressure
Standard ............... 15.4 kg/m2 (15.1 bar, 219 psi) / 200 rpm
Minimun ............... 12.9 kg/m2 (12.7 bar, 183 psi) / 200 rpm
Compression differential limit between cylinders ............... 0.06
kg/m2 (0.06 bar, 0.9 psi) / 200 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles) ............... up to 0.5 (1
qt. per 1200 miles)
Recommended engine oil ............... 5W-30
Oil type API ............... SN
Engine oil capacity (Refill capacity) ............... With filter change
3.0 l (3.2 qt.)
Without filter change 2.8 l (3.0 qt.)
Oil change interval, km (miles) ............... 5,000-10,000
(3,000-6,000)
Oil Pressure, kPa (bar, kg/cm 2, psi) ............... Idle speed: More
than 60 (0.6, 0.61, 9)
2,000 rpm: More than 270 (2.7, 2.8, 39)
Ignition system
Spark plug ............... With ERG system: FXE20MR11 (DENSO)
Without ERG system: REA12MC4 (DENSO)
Spark plug gap ............... 1.1 mm (0.043 in)
Valve clearance adjustment data
Calculate the thickness of new adjusting valve lifter so valve clearance
comes within specified values.
R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance
Intake:
N = R + [M - 0.30 mm (0.012 in)]
Exhaust:
N = R + [M - 0.33 mm (0.013 in)]
Valve lifters are available in 26 sizes range from 3.00 mm (0.1181 in)
to 3.50 mm (0.1378 in), in steps of 0.02 mm (0.0008 in).
Example (intake valve):
R = 3.10 mm
M = 0.52 mm
N = 3.10 + (0.52 - 0.30) = 3.32 mm, so we need a valve lifter with
identification mark 332.
Cold ............... Hot
Intake ............... 0.26-0.34 mm (0.010-0.013 in) ...............
0.304-0.416 mm (0.012-0.016 in)
Exhaust ............... 0.29-0.37 mm (0.011-0.015 in) ...............
0.308-0.432 mm (0.012-0.017 in)
| VEHICLE APPLICATIONS |
Model ............... Years Produced
Nissan Micra ............... 2010
Nissan Almera (Thailand) ............... 2010
Nissan Note ............... 2012
Datsun Go (India, Indonesia, Russia, South Africa) ............... 2014
Datsun Go+ (Indonesia) ............... 2014
Nissan Serena e-Power (JDM) ............... 2018
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| Engines Technical Specifications |