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Nissan QG engine
Nissan QG engine
	QG18DE engine at the Nissan Engine Museum
Overview
Manufacturer	Nissan Machinery (Aichi Kikai)
Layout
Configuration	Straight-4
Displacement	1.3–1.8 L (1,295–1,769 cc)
Cylinder bore	71 mm (2.8 in); 73.6 mm (2.90 in); 76 mm (2.99 in); 80 mm (3.15 in)
Piston stroke	81.8 mm (3.22 in); 88 mm (3.46 in)
Cylinder block material	Cast-iron
Cylinder head material	Aluminum
Valvetrain	DOHC 4 valves x cyl. with VVT
Compression ratio	9.5:1
RPM range
Max. engine speed	6500
Combustion
Fuel system	Electronic fuel injection; MPFI (in QG18DE); Direct injection (optional in NEO Di)
Fuel type	Gasoline; Natural gas (in QG18DEN)
Cooling system	Water-cooled
Output
Power output	87–130 hp (65–97 kW)
Torque output	130–174 N⋅m (96–128 lb⋅ft)
Chronology
Predecessor	Nissan GA engine

The QG engine is a 1.3 L (1,295 cc), 1.5 L (1,497 cc), 1.6 L (1,597 cc) and 1.8 L (1,769 cc) straight-4 piston engine from Nissan. It is a lean-burn aluminum DOHC 4-valve design with variable valve timing and optional NEO Di direct injection.

The QG engines were designed by Nissan's Aichi Kikai division ^[1] in Japan.

Nissan websites state the QG as standing for "Quality and Green".^[2]

QG13DE

The QG13DE is a 1.3 L (1,295 cc) DOHC 16-valve with 4-cylinder. It produces 87 hp (65 kW) at 6000 rpm and 130 N⋅m (96 lb⋅ft) at 4400 rpm. Bore x Stroke= 71 mm × 81.8 mm (2.80 in × 3.22 in)

It is used in the following vehicles:

1999-2006 Nissan Wingroad/ADVAN (Y11)
1998-2004 Nissan Sunny (B15)
2005-2012 Nissan Sentra N16 series for low-end models (Philippines)

QG15DE

Water-cooled straight 4 cylinder engine with 1.5 L (1,497 cc) capacity and DOHC control. Bore and stroke are 73.6 mm × 88 mm (2.90 in × 3.46 in). Output is 90 hp (67 kW) at 5600 rpm and 128 N⋅m (94 lb⋅ft) at 2800 rpm and later 105 hp (78 kW) at 6000 rpm and 143 N⋅m (105 lb⋅ft) at 4400 rpm.

This engine is used in:

1999-2004 Nissan Sunny (B15)
1999-2008 Nissan Wingroad/AD (Y11)
2002-2009 Samsung SM3 (G10)

Power outputs for N16 Almera:

'00-'02: 90ps
'02-'06: 98ps

QG16DE

The QG16DE is a 1.6 L (1,597 cc) straight 4-cylinder engine with double over head camshafts with 16 valves. The cylinder head also features Nissan Variable Cam Timing (N-VCT) and micro-polished camshafts. A new water pump assembly has been designed for the QG16DE; the design is based on the water pump from the GA16DE, the changes made it more efficient and reliable than its predecessor. The engine produces 88 kW (118 hp) at 6000 rpm and 165 N⋅m (122 lb⋅ft) at 4000 rpm. Bore and stroke is 76 mm × 88 mm (2.99 in × 3.46 in).

Specifications

Displacement - 1.6 L (1,597 cc)
Layout - DOHC Inline-4 (Straight-4) with Nissan Variable Cam Timing
Valves - 16, 4 for each cylinder
Power - 118 hp (88 kW) at 6000 rpm
Torque - 122 lb⋅ft (165 N⋅m) at 4000 rpm
Redline - 6500 rpm
Fuel Delivery System - Electronic fuel injection (EFI)
Ignition system - 4 coils, 1 for each cylinder
Fuel Compression Ratio - 9.5:1

It is used in the following vehicles:

Nissan Sunny NEO with 5-speed manual or 4-speed automatic transmission
Nissan Sunny N16 series sold in Sri Lanka
Nissan Primera (P11.144) 2000-2002
Nissan Primera (P12) edition sold in various countries across Europe
Nissan Sentra N16 series in the Philippines and the N16 series Pulsar sold in Australia and New Zealand
Renault Scala sold in Mexico and Colombia
Nissan Almera sold in South Africa

QG18DD

The 1.8 L direct-injection QG18DD produces 130 hp (97 kW) at 6000 rpm and 174 N⋅m (128 lb⋅ft) at 2800 rpm.

It is used in the following vehicles:

1999-2004 Nissan Sunny

QG18DE

The 1.8 L (1,769 cc) QG18DE was designed for Nissan by Aichi Machine Industry, Japan. It is manufactured both in Japan and the Mexican city of Aguascalientes. Bore and stroke is 80 mm × 88 mm (3.15 in × 3.46 in). The engine is tuned to achieve most of its torque at low revs at the expense of raw power at high revs, making the engine very responsive in day-to-day driving. It has a cast-iron engine block, aluminum DOHC cylinder head, uses Multi-port fuel injection, forged-steel connecting rods, two single-piece cast camshafts and a cast-aluminum intake manifold. It also features N-VCT (Nissan's Valve Timing Control technology). This engine received the RJC Technology of The Year Award of 2001.^[3]

Specifications

Displacement - 1.8 L (1,769 cc)
Layout - DOHC Inline-4 (Straight-4) with VVT tech (called NVTC).
Valves - 16, 4 for each cylinder
Power - 115 hp (86 kW) to 128 hp (95 kW) at 6000 rpm
Torque - 122 lb⋅ft (165 N⋅m) to 130 lb⋅ft (176 N⋅m) at 2800 rpm
Redline - 6500 rpm
Fuel Delivery System - electronic fuel injection
Fuel compression ratio - 9.5:1

Emissions Control Devices

OBDII - On-board Diagnostic System (codes can be read/erased by a variety of readers, e.g. Actron blaZt). Nissan Pulsar N16 Models without EuroOBD in Australia do not have OBDII.
EGR - Exhaust Gas Recirculation
HO2S - (4) Oxygen Sensors (2 before exhaust catalyst, 2 after) - note a series 2 1.8l has only 2 O2 sensors: 1 pre-catalytic-converter and 1 downstream from it.
TWC - Three Way Catalyst (2 in exhaust manifold, 1 under car).
EVAP - Charcoal Evaporative Purge Canister.
Ignition Timing: 9 degrees BTDC (can be altered +/- 2 degrees using CONSULT-II handheld diagnostic tester, e.g. blaZt).
Knock Sensor - located on engine block; retards timing if pinging/detonation is detected.
Heated Throttle Body - heated by engine coolant.

The QG18DE is used in the following vehicles:

2000-2006 Nissan Sentra B15 and N16
2000-2005 Nissan Pulsar N16
1999-2002 Nissan Primera P11.144
2002-2007 Nissan Primera P12
2000-2006 Nissan Almera N16
2000-2006 Nissan Almera Tino
1999-2006 Nissan Primera
2000-2006 Nissan Expert
1998-2006 Nissan Avenir
1999-2005 Nissan Wingroad/AD van Y11
1999-2005 Nissan Bluebird Sylphy G10
1998-2004 Nissan Sunny B15

QG18DEN

The QG18DEN is the natural gas version of the QG18DE. It produces 105 hp (78 kW) at 5600 rpm and 149 N⋅m (110 lb⋅ft) at 2800 rpm. Bore and Stroke are 80 mm × 88 mm (3.15 in × 3.46 in). It was used in the Nissan AD van from 2000 to 2008.