1.5-Liter 1NZ-FXE (First and Second Generation Prius)
The First and Second Generation Prius, produced between 1997 and 2009, used the 1NZ-FXE engine. It is a hybrid and 1.5 L Inline 4-cylinder gasoline engine. It uses the Atkinson cycle, which is more efficient than the cycle found in Otto cycle engines, but with a compromise on power and efficiency.
- Displacement: 1.5 liters (1,497 cc)
- Engine Number: 1NZ-FXE
- Horsepower (Gasoline Engine): ~76 hp
- Combined Output (Gasoline + Electric Motor): ~110 hp
- Fuel System: EFI which stands for Electronic Fuel Injection
The 1NZ-FXE is combined with an electric motor and battery to produce more torque as required at low-speed revolutions.
1.8 L 2ZR-FXE / 3rd (facelift) & 4th Generation Prius
Starting from the third generation of Prius produced between 2010 and 2015, the line was equipped with a 1.8 liter 2ZR-FXE engine. This engine is also an Atkinson cycle engine, which is more powerful and efficient than the previous 1.5L engine.
- Displacement: 1.8 liters (1,798 cc)
- Engine Number: 2ZR-FXE
- Horsepower (Gasoline Engine): ~96 hp
- Combined Output (Gasoline + Electric Motor): ~121 hp
- Fuel System: EFI stands for Electronic Fuel Injection.
The 2ZR-FXE engine increases the highway cruising capability by providing more torque at lower rpm and increasing the hybrid system’s efficiency.
Electric Motor and Hybrid System
The Prius combines a gasoline engine with a Permanent Magnet Synchronous Motor (PMSM). The electric motor operates at low speed, especially during city traffic congestion, and assists in acceleration when required. The electric motor gets power from a Hybrid Synergy Drive system, which puts energy into the car’s battery.
Some Prius variants, including the Prius Prime (the plug-in hybrid model), have a longer drive that can be operated using electricity only.
Plug-in Hybrid Versions
The new Toyota Prius Prime has a better battery and electric motor system, which means that the hybrid car can travel longer distances in an all-electric mode without the support of a gasoline engine. The power plant is still the 2ZR-FXE, but the electric motor and battery system are improved for plug-in hybrid applications.
Engine Layout and Design
1NZ-FXE is a Hybrid Synergy Drive – a system that coordinates the operations of the gasoline engines, 2ZR-FXE, and the electric motors.
- Engine Type: An inline 4-cylinder Atkinson cycle is used on the lower side.
- Valvetrain: The CBR250R engine has Dual Overhead Camshafts (DOHC) and Variable Valve Timing (VVT-i).
- Fuel Type: Unleaded gasoline
Engine Numbers Overview
1NZ-FXE: It was originally installed in early-model Prius vehicles (1997–2009) and has a 1.5-liter displacement.
2ZR-FXE: Installed on third and fourth generations of Prius cars, manufactured since 2010 with a 1.8-liter engine.
Hybrid Battery and Engine Integration
Engineers designed the Prius engines to work in harmony with the Hybrid Synergy Drive system, which consists of:
- Electric Motor/Generator: The gasoline engine helps recharge and propels the vehicle at slow speeds.
- Battery Pack: The battery holds energy from the regenerative braking system and supplies power to the electric motor. Depending on the model and year, it can be either nickel-metal hydride (NiMH) or lithium-ion.
Fuel Efficiency & Performance
The designers created the 1NZ-FXE and 2ZR-FXE Atkinson-cycle engines to provide higher fuel economy than output power. That makes it easier for the Prius to offer great fuel economy and eventually get more than 50 mpg.
Technologically speaking, designers created it not for power or racing but for endurance, decades of functionality, and efficiency, ensuring it saves worldwide the most planet-friendly fuel, the gasoline of the Prius.
Availability in Bangladesh
In Bangladesh, dealerships offer reconditioned versions of the Toyota Prius. Different car dealership centers import many reconditioned cars, particularly the Prius, from Japan. Technicians strip down the cars and rebuild them with all the best features of a new model, which allows the company to price the Prius affordable for everyone.
To buy parts and services for the Toyota Prius, Car Care BD deals with hybrid cars. At Car Care BD, you can find a range of spare parts and services for the Toyota Prius.
If you want to keep your current Prius or are considering purchasing a new hybrid battery for your automobile, Car Care BD assures you that you will obtain original and genuine spare parts. You can find their selection on their site or visit their service center to speak with a specialist and receive information on maintenance for your hybrid car.
Upgrade your Toyota Prius today.
The Toyota Prius has used two main types of gasoline engines over its life cycle: a 1.5 L 1NZ-FXE in the first generations and a 1.8 L 2ZR-FXE in the more recent generations. Sophisticated hybrid systems associate with these engines to offer the best fuel efficiency, moderate pollution levels, and real-world capability. Toyota combines these engines with its Hybrid Synergy Drive, making the Prius one of the most efficient cars today.
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