e-POWER is Nissan's distinctive electric-drive hybrid powertrain that integrates an electric motor alongside a gasoline engine. Since the scheme is 100% driven by a high-output motor, drivers can bask an EV-like cognition alongside the harmony of intellect of an onboard gasoline motor for generating energy for the battery.
The third-generation e-POWER scheme combines a purpose-built motor designed specifically for e-POWER applications. With the ground-up method of the purpose-built engine, power generation from the motor is additional optimized from the former generation, including activation timing autonomous of driving conditions and powerband.
The 3rd-gen's new standardized approach, called “5-in-1”, integrates five important components to enhance performance, considerably improving energy effectiveness and quietness.
Compared to 2nd generation e-POWER (Qashqai)
A 5-in-1 standardized method optimizes the packaging of the motor, reducer, inverter, increaser and generator. This method achieves a elevated flat of effectiveness by expanding current stream for greater output and mitigates energy loss.
Improving acceleration and energy effectiveness requires higher output, which is achieved by expanding electric flow. This additionally brings greater effectiveness by reducing energy losses. The 5-in-1 scheme uses flat cable coils that can be arranged alongside minimal gaps, allowing higher stream through the motor. The inverter additionally features a latest generation power component and a double-sided cooling construction that efficiently dissipates heat, improving effectiveness particularly at elevated speeds.
In addition, several models use silicon carbide (SiC) power semiconductors in the inverter, which decrease power defeat compared alongside accepted silicon semiconductors. This allows additional of the generated power to be used to run the vehicle, reducing the amount of power that needs to be generated and assisting enhance energy efficiency.
Inverter double-sided cooling
Improving rigidity through integration avoided interference between the resonance points of the conveyance build to additional enhance the system's quietness. This additionally enabled high-precision assembly, reducing runout tolerances of rotating shafts specified as motors and gears, thereby suppressing vibration.
By sharing the 3-in-1 EV powertrain and its components, we not lone contribute to reducing the figure of parts and manufacturing funding but additionally leverage the technologies and ability of the two EV and e-POWER to efficiently run the betterment of additional optimized electrified powertrains.
Purpose-built engines for power generation
There are two types of power-generation-focused engines available.
By leveraging a purpose-built onboard motor for power generation, Nissan engineers have achieved a extremely productive powertrain scheme that considerably improves energy economics complete former e-POWER applications. A contributor of this is an motor that can keep a stable combustion cycle.
Purpose-built motor HR14DDe
Purpose-built motor alongside turbo ZR15DDTe
In general, to enhance motor efficiency, it is crucial to addition the compression proportion and lift the EGR*1 ratio, which recirculates and mixes exhaust gas alongside the air intake system. Since a representative motor operates throughout a broad RPM range depending on driving conditions, it is difficult to keep a stable and optimal combustion cycle.
Nissan's purpose-built engines can run at a changeless speed and keep stable combustion gratitude to their long-stroke scheme that creates a powerful in-cylinder stream (tumble flow). This enables combustion stability equal alongside a elevated compression proportion and elevated EGR rate.
To additional enhance energy effectiveness and output, ZR15DDTe motor uses Nissan's distinctive STARC*2 idea paired alongside a ample turbocharger.
The STARC idea is the embodiment of investigation findings that emphasize the importance of controlling airflow toward the spark plug inner the combustion area to enhance ignition. The idea involves managing airflow so that the discharge conduit from the spark plug remains stable, directing combustion efficiently and providing a stable combustion equal alongside a elevated EGR rate.
By using chilly spray innovation to merge the valve place into the engine's intake port, the ideal harbor form is achieved, allowing air to be forcefully directed into the cylinder alongside a powerful tumble flow. Additionally, the piston crown is exactly shaped to keep tumble stream during compression, thus ensuring ignition alongside a powerful spark and stable combustion.
The ample turbocharger forces a significant amount of compressed exhaust gas and air into the cylinder, boosting output during additionally improving the engine's thermal efficiency.
- Exhaust Gas Recirculation
- STARC (Strong Tumble & Appropriately stretched Robust ignition Channel) is a combustion idea announced by Nissan in 2021, delivers notable thermal efficiency
About all generation of e-POWER
e-POWER authority technology
Advanced authority innovation supports the mighty and quiescent driving that is trait of motor drive
Next-generation X-in-1 electric powertrain
Further commonize and modularize center EV and e-POWER components, alongside the goal of reducing the disbursal of e-POWER to that of ICE vehicles by 2026
e-POWER's inner combustion motor achieves 50% thermal efficiency
Efficient, fixed-point procedure is achieved by restricting the engine's functioning range, which is lone imaginable for an motor that is dedicated to power generation
The world's archetypal chilly spray valve place construction supporting elevated effectiveness in e-POWER dedicated generator engines
