Nissan PR engine
Nissan PR engine | |
---|---|
Overview | |
Manufacturer | Nissan |
Production | 2018–present |
Layout | |
Displacement | 2.5 L (2,488 cc) |
Cylinder bore | 89 mm (3.5 in) |
Piston stroke | 100 mm (3.9 in) |
Cylinder block material | Aluminum |
Cylinder head material | Aluminum |
Valvetrain | DOHC 4 valves per cylinder with VVT |
Valvetrain drive system | Chain |
Compression ratio | 12.0:1 |
RPM range | |
Max. engine speed | 6200 rpm |
Combustion | |
Fuel system | Direct fuel injection |
Fuel type | Gasoline |
Cooling system | Water-cooled |
Output | |
Power output | 181–188 hp (135–140 kW; 184–191 PS) |
Torque output | 180–181 lb⋅ft (244–245 N⋅m) |
Dimensions | |
Dry weight | 142 kg (313 lb) |
Emissions | |
Emissions target standard | Euro 6, SULEV30 |
Chronology | |
Predecessor | Nissan QR engine |
The PR engine is a gasoline inline-four piston engine with a displacement of 2.5 L (2,488 cc) and was introduced in 2018 by Nissan.[1] The motor has an aluminum block and head, and has a dual overhead camshaft (DOHC) four-valve design with variable valve timing and direct injection. The engine is heavily based on the QR engine but has 95% different parts.[2]
The engine is used in compact and midsize applications by Nissan, and Mitsubishi via the Renault-Nissan-Mitsubishi Alliance.
PR25DD
[edit]The 2.5 L (2488 cc) PR25DD has a bore and stroke of 89 mm × 100 mm (3.5 in × 3.9 in) with a compression ratio of 12.0:1.[3] Compared with its predecessor, the QR25DE, it has an increased compression ratio, iron mirror-finish bore coatings instead of cast-iron cylinder liners, and a resin intake port insert to insulate charge air from heat from the cylinder head. It also has electrically actuated variable valve timing, a variable displacement oil pump, integrated exhaust manifold, and cooled EGR. These features were added to increase fuel economy and lower emissions while increasing power output.[4][5]
It was first introduced in the Nissan Altima, where it produces 188 hp (140 kW; 191 PS) at 6000 rpm and 180 lb⋅ft (244 N⋅m) of torque at 3600 rpm. It was later introduced in the 2021 Nissan Rogue and 2021 Mitsubishi Outlander, where it produces 181 hp (135 kW; 184 PS) at 6000 rpm and 181 lb⋅ft (245 N⋅m) of torque at 3600 rpm.[6]
Vehicle applications:
- 2019–present Nissan Altima
- 2021–2023 Nissan Rogue
- 2021–present Nissan X-trail
- 2021–present Mitsubishi Outlander
See also
[edit]References
[edit]- ^ Guardiola, Author: El (2022-06-08). "Engine specifications for Nissan PR25DD, characteristics, oil, performance". mymotorlist.com. Retrieved 2024-10-17.
{{cite web}}
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has generic name (help) - ^ "Nissan to use mirror bore process on new 2.5L engine for Altima; highest volume application of technique". Green Car Congress. April 26, 2019. Retrieved October 17, 2024.
- ^ "2019 Nissan Altima: Specifications". Official U.S. Newsroom. 2018-03-28. Retrieved 2024-10-17.
- ^ Capparella, Joseph (July 6, 2018). "We Drove 2019 Nissan Altima Prototypes and All We Can Tell You About Are the All-New Four-Cylinder Engines". Car and Driver. Retrieved October 17, 2024.
- ^ Yoshida, Naohiro (2019-04-02). Development of New I4 2.5L Gasoline Direct Injection Engine (Report). Warrendale, PA: SAE Technical Paper.
- ^ Dorian, Drew (October 17, 2024). "2021 Nissan Rogue". Car and Driver.
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