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The Toyota NZ engine family is a straight-4 piston engine series. The 1NZ series uses aluminum engine blocks and DOHC cylinder heads. It also uses sequential fuel injection, and has 4 valves per cylinder with VVT-i.
| Toyota NZ engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Toyota |
| Designer | Yasushi Nouno, Hiroshi Tada, Toshifumi Takaoka[1] |
| Production | |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement |
|
| Cylinder bore |
|
| Piston stroke |
|
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves per cylinder with VVT-i |
| Valvetrain drive system | Timing Chain |
| Compression ratio |
|
| Combustion | |
| Turbocharger | IHI RHF4 turbo with intercooler |
| Fuel system | Sequential fuel injection |
| Fuel type | |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 55–113 kW (75–153 PS; 74–151 hp) |
| Torque output | 111–206 N⋅m (82–152 lb⋅ft; 11–21 kg⋅m) |
| Chronology | |
| Predecessor |
|
| Successor | Toyota NR engine |
The engines are produced by Toyota's Kamigo Plant in Toyota, Aichi, Japan (for Prius, Vitz, ist and Sienta);[3] by Siam Toyota Manufacturing in Chonburi, Thailand (1NZ for Yaris and Vios);[5][6] and by Indus Motor Company in Karachi, Pakistan (2NZ for Corolla).[5]
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The 1NZ-FXE is a hybrid 1.5 L (1,497 cc) version. Bore and stroke is 75 mm × 84.7 mm (2.95 in × 3.33 in). It features forged steel connecting rods and an aluminum intake manifold. The engine has a high physical compression ratio of 13.0:1, but the closing of the inlet valve is delayed, for an effective compression ratio of 9.5:1.[7] The net result is that the engine has a greater effective expansion than compression—making it a simulated Atkinson cycle, rather than a conventional Otto cycle.
The reduction in cylinder charge means reduced torque and power output, but efficiency is increased. This combination makes the 1NZ-FXE suitable for use with the Hybrid Synergy Drive, where peak torque and power demands can be met by the electric motor and battery. Output is 57 kW (77 PS; 76 hp) at 5000 rpm with 115 N⋅m (85 lb⋅ft; 12 kg⋅m) of torque at 4000 rpm. Peak thermal efficiency is about 37%.[8] Production was discontinued in 2009, with the arrival of the 3rd generation Prius, which replaced the 1NZ-FXE with the 2ZR-FXE.
In 2012, upon the arrival of the Prius c (North America), the Aqua (Japan), and the Yaris Hybrid (Europe), an improved version was introduced. Without any belt-driven accessories, and a physical compression ratio of 13.4:1, the new version delivers an output of 55 kW (75 PS; 74 hp) at 4800 rpm with 111 N⋅m (82 lb⋅ft; 11 kg⋅m) of torque at 3600–4400 rpm.
The 1NZ-FXE Hybrid Synergy Drive in the Toyota Prius has won several International Engine of the Year awards:
- Best Eco-friendly 2000
- Best Eco-friendly 2001
- Best Fuel Economy 2005
- Best 1.4-litre to 1.8-litre 2005[9]
- Best Fuel Economy 2006
- Best 1.4-litre to 1.8-litre 2006[9]
Applications:
- Toyota Corolla Axio/Fielder Hybrid NKE165 (2013–present)
- Toyota Prius
- NHW10/NHW11 (1997–2003)
- NHW20 (2003–2009)
- Toyota Prius c/Toyota Aqua NHP10 (2011–2021)
- Toyota Probox Hybrid NHP160V (2018–present, also sold as Succeed Hybrid until 2020 and as Mazda Familia Van Hybrid (NHP160M) from 2018)[10]
- Toyota Sienta Hybrid NHP170G (2015–2022)
- Toyota Yaris Hybrid NHP130 (2012–2020, Europe)/Vitz Hybrid NHP130 (2017–2019, Japan)
- Mitsuoka Ryugi Hybrid (2014–present, based on Corolla Axio/Fielder Hybrid NKE165)
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The 1NZ-FXP is a hybrid 1.5 L (1,497 cc) version. Bore and stroke is 75 mm × 84.7 mm (2.95 in × 3.33 in). It features forged steel connecting rods and an aluminum intake manifold. The engine has a high physical compression ratio of 13.0:1, but the closing of the inlet valve is delayed, for an effective compression ratio of 9.5:1.[11] The net result is that the engine has a greater effective expansion than compression—making it a simulated Atkinson cycle, rather than a conventional Otto cycle.
The reduction in cylinder charge means reduced torque and power output, but efficiency is increased. This combination makes the 1NZ-FXP suitable for use with the Hybrid Synergy Drive, where peak torque and power demands can be met by the electric motor, battery and LPG-hybrid system. Output is 57 kW (77 PS; 76 hp) at 5000 rpm with 115 N⋅m (85 lb⋅ft; 12 kg⋅m) of torque at 4000 rpm. Peak thermal efficiency is about 37%.[12]
Applications:
- Toyota JPN Taxi NTP10 (2017–present)
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The 1NZ-FE is a 1.5 L (1,497 cc) conventional Otto-cycle variant of the 1NZ-FXE with VVT-i on the intake camshaft. The engine block is found in many Toyota models assembled in Japan and Asian countries. It retains the same bore and stroke, but the compression ratio is lowered to 10.5:1 (increased to 11.0:1 in 2012 for the Japanese market). Output is 76–81 kW (103–110 PS; 102–108 hp) at 6000 rpm with 132–143 N⋅m (97–105 lb⋅ft; 13–15 kg⋅m) of torque at 4200–4800 rpm. The redline is 6400 rpm. A CNG version called 1NZ-FNE was produced from April 2003, exclusively for the first generation Toyota Probox (NCP52V) until its discontinuation in 2014. It has 12.0:1 compression ratio, output is 68 kW (92 PS; 91 hp) at 6000 rpm with 125 N⋅m (92 lb⋅ft; 13 kg⋅m) of torque at 4000 rpm.
Applications:
- Toyota Allion/Premio
- Toyota Auris (Japan only)
- NZE151H/NZE154H (2006–2012)
- NZE181H/NZE184H (2012–2018)
- Toyota bB NCP31/NCP35 (2000–2005, also sold as Scion xB with this engine in North America)
- Toyota Corolla
- NZE121/NZE124 (2000–2006, including Japanese market Allex/Corolla RunX hatchbacks)
- NZE141 (2007–2013, Hong Kong only)
- Toyota Corolla Axio/Fielder
- NZE141/NZE144 (2006–2012)
- NZE161/NZE164 (2012–present)
- Toyota Corolla Rumion NZE151N (2007–2016)
- Toyota Corolla Spacio NZE121N (2001–2007)
- Toyota ist
- NCP61/NCP65 (2002–2007, also sold as Scion xA with this engine in North America)
- NCP110/NCP115 (2007–2016)
- Toyota Platz/Echo sedan/Yaris sedan NCP12 (1999–2005)
- Toyota Porte
- NNP11/NNP15 (2004–2011)
- NCP141/NCP145 (2011–2020, also sold as Spade)
- Toyota Probox
- NCP51V/NCP55V/NCP58G/NCP59G (2002–2014)
- NCP160V/NCP165V (2014–present, also sold as Succeed until 2020 and as Mazda Familia Van (NCP160M) from 2018)
- Toyota Ractis
- NCP100/NCP105 (2005–2010)
- NCP120/NCP125 (2010–2016, also sold as Subaru Trezia)
- Toyota Raum NCZ20/NCZ25 (2003–2011)
- Toyota Sienta NCP81G/NCP85G (2003–2015)
- Toyota Succeed NCP51V/NCP58G/NCP59G (2002–2014)
- Toyota Vios
- Toyota Yaris hatchback (international)/Vitz (Japan)
- Toyota Yaris Verso/FunCargo NCP21/NCP25 (1999–2005)
- Mitsuoka Galue 204/Classic (2008–2012, based on Corolla Axio NZE141)
- Mitsuoka Nouera 602 (2008–2012, based on Corolla Axio/Fielder NZE141)
- Mitsuoka Ryugi (2014–present, based on Corolla Axio/Fielder NZE161/NZE164)
- Tommykaira Baby Gang (2001, based on Vitz NCP13)
- Tommykaira ist (2002, based on ist NCP61 and tuned with supercharger)
- WiLL Cypha NCP75 (2002–2005)
- WiLL VS NZE127 (2001–2004)
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The 1NZ-FE Turbo is a 1.5 L (1,497 cc) with an air-to-air intercooler turbocharged conventional Otto-cycle variant of the 1NZ-FE with VVT-i developed by Toyota Racing Development (TRD). The engine block is found in many Toyota models assembled in Asian countries. It retains the same bore and stroke, even the same 10.5:1 compression ratio as the naturally aspirated sibling. Output is 105–112 kW (143–152 PS; 141–150 hp) at 6000 rpm with 196–206 N⋅m (145–152 lb⋅ft; 20–21 kg⋅m) of torque at 4000–4800 rpm. The redline is 6400 rpm.
In Japan, this unique engine was available through modified Toyota cars (tuned by TRD or Modellista (ja)) and sold officially as complete car at Toyota dealers. The turbocharger kits is also available for sale at selected Toyota dealers or TRD official store.[13]
Applications:
- bB TRD Turbo NCP31 (2004, tuned by TRD)
- Toyota Corolla Axio/Fielder GT TRD Turbo NZE141 (2009–2012, tuned by TRD)
- ist TRD Turbo NCP61 (2004, tuned by TRD)
- Toyota Vios Turbo NCP42 (2005, limited edition of 600 units for Thai market)
- Toyota Vitz
- RS Turbo NCP13 (2003, tuned by Modellista by using TRD performance parts and also sold as Yaris T-Sport Turbo in Europe and limited to 400 units)
- TRD Turbo M NCP91 (2008–2009, tuned by Modellista by using TRD performance parts)
- GRMN Turbo NCP131 (2013, limited edition of 200 units)
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The 2NZ-FE is a 1.3 L (1,298 cc) version. Bore and stroke is 75 mm × 73.5 mm (2.95 in × 2.89 in), with a compression ratio of 10.5:1. Output is 63–65 kW (84–87 hp; 86–88 PS) at 6000 rpm with 121–123 N⋅m (89–91 lb⋅ft; 12–13 kg⋅m) of torque at 4400 rpm. In 2000, it won the International Engine of the Year award in the 1-litre to 1.4-litre category.[14]
Applications:
- Toyota bB NCP30 (2000–2005)
- Toyota Corolla
- Toyota FunCargo/Toyota Yaris Verso NCP20 (1999–2005)
- Toyota ist NCP60 (2002–2007)
- Toyota Platz/Echo sedan NCP11/NCP16 (1999–2005)
- Toyota Porte NCP10 (2004–2012)
- Toyota Probox NCP50V (2002–2014)
- Toyota Vios
- NCP41 (2003–2007, Philippines only)
- NCP92/NCP96 (2005–2013, also sold as Belta in Japan and Yaris sedan elsewhere)
- NCP151 (2013–2016, also sold as Yaris sedan)
- Toyota Yaris (international)/Toyota Vitz (Japan)
- NCP10/NCP15 (1999–2005, also sold as Echo hatchback)
- NCP90/NCP95 (2005–2010, up to 2016 in China)
- NCP130 (2010–2020, mostly available in Australia and New Zealand and not available for Vitz)
- NCP151 (2013–2016, not marketed as Vitz)
- WiLL Vi NCP19 2000–2001
- WiLL Cypha NCP70 2002–2005
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In 2008, Great Wall Motors (GWM) introduced 1.3 L and 1.5 L engines codenamed GW4G13 and GW4G15. Despite the similar codes, they have nothing to do with the Mitsubishi 4G1x engines, but instead derived from NZ design.[15][16][17] For example, the NZ engines are using timing chain to connect the crankshaft and camshafts, while the Mitsubishi 4G1x engines are using the less durable timing belt. Visually, this engine looks similar like the NZ engines such as the pulleys position and mechanically also share similarities such as the same bore x stroke size, engine displacement and interchangeable parts.[18] No statement from GWM or Toyota regarding the confirmation if these engines are officially licensed by GWM. But according the official press release by GWM in 2009, these GW4G1x engines were independently developed by themselves.[19]
The turbocharged variants of the 1.5 L engine called GW4G15T was introduced in 2011 and followed by the higher output GW4G15B in the following year. These engines were discontinued in 2019, replaced by the cleaner GW4G15F to comply with China's National V emission standard. Further new variants that comply with National VI emission standard codenamed GW4G15K, GW4G15M and the naturally aspirated hybrid GW4G15H are also produced.
GW4G13
Power: 68 kW (91 hp; 92 PS) at 6,000 rpm
Torque: 118 N⋅m (87 lb⋅ft; 12 kg⋅m) at 4,200 rpm
Applications:
- Great Wall Florid (2008–2013)
- Great Wall Peri/Haval M1 (2008–2010)
- Great Wall Voleex C10 (2010–2014)
GW4G15
Power: 78 kW (105 hp; 106 PS) at 6,000 rpm
Torque: 138 N⋅m (102 lb⋅ft; 14 kg⋅m) at 4,200 rpm
Applications:
- Great Wall Coolbear/Haval M2 (2009–2015)
- Great Wall Florid (2008–2013)
- Great Wall M4/Haval H1/Voleex C20R (2012–2021)
- Great Wall Voleex C10 (2010–2014)
- Great Wall Voleex C30 (2010–2016)
GW4G15T
Power: 98 kW (131 hp; 133 PS) at 5,600 rpm
Torque: 188 N⋅m (139 lb⋅ft; 19 kg⋅m) at 2,000–4,500 rpm
Applications:
- Great Wall Voleex C50 (2012–2016)
- Great Wall Voleex V80 (2013–2015)
GW4G15B
Power: 110 kW (148 hp; 150 PS) at 5,600 rpm
Torque: 210 N⋅m (155 lb⋅ft; 21 kg⋅m) at 2,200–4,500 rpm
Applications:
- Haval H2 (2014–2021)
- Haval H2s (2016–2019)
- Haval H6 (2012–2018)
- Haval H6 Coupe (2016–2018)
- Haval M6 (2017–2019)
GW4G15F
Power: 110 kW (148 hp; 150 PS) at 5,600–6,000 rpm
Torque: 210 N⋅m (155 lb⋅ft; 21 kg⋅m) at 1,800–4,400 rpm
Applications:
- Haval H4 (2020)
- Haval H6 (2019–2020)
- Haval H6 Coupe (2020–2021)
- Haval F5 (2020)
- Haval M6 (2021–2023)
GW4G15K
Power: 110 kW (148 hp; 150 PS) at 5,500–6,000 rpm
Torque: 220 N⋅m (162 lb⋅ft; 22 kg⋅m) at 2,000–4,400 rpm
Applications:
- Haval Chitu (2022–present)
- Haval Jolion (2021–present)
GW4G15M
Power: 110 kW (148 hp; 150 PS) at 5,500–6,0000 rpm
Torque: 218 N⋅m (161 lb⋅ft; 22 kg⋅m) at 1,800–4,400 rpm
Applications:
- Haval Chitu (2023–present)
- Haval Cool Dog (2022–present)
- Haval H6 (2022–present)
- Haval M6 (2023–present)
GW4G15H
Power:
70 kW (94 hp; 95 PS) (engine)
110 kW (148 hp; 150 PS) (electric motor)
139 kW (186 hp; 189 PS) (combined)
Torque:
125 N⋅m (92 lb⋅ft; 13 kg⋅m) (engine)
250 N⋅m (184 lb⋅ft; 25 kg⋅m) (electric motor)
375 N⋅m (277 lb⋅ft; 38 kg⋅m) (combined)
Applications:
- Haval Chitu Hybrid (2022–present)
- Haval Jolion Hybrid (2021–present, export market)
- Haval Xiaolong PHEV (2023–present)
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