Nissan EM motor

Nissan EM is a brand of electric motors by Nissan. The first EM motor, the EM61, debuted in 2010 as part of the first-generation Nissan Leaf. The EM series of motors have since been used in various hybrid and all-electric Nissan vehicles.

Nissan EM motor
Overview
ManufacturerNissan
Production2010-Present
Layout
ConfigurationWater-cooled, 3-phase AC synchronous
Cylinder block materialAluminium
RPM range
Max. engine speed10,390 - 11,330 rpm (Depends on model-year)
Output
Power outputFrom 80 kW (107 hp) to 160 kW (215 hp)
Torque outputFrom 250 N⋅m (184 lb⋅ft) to 340 N⋅m (251 lb⋅ft)
Dimensions
Dry weight58 kg
Emissions
Emissions target standardZero Emission

EM61

The EM61 made its debut in 2010. It was used only in the first generation Nissan Leaf (ZE0 2010-2012). The EM61 generates 280Nm of peak torque and has a max rpm of 10,390.

EM57

The EM57 is an improvement over the first generation. It was first released with the 'AZE0' Nissan Leaf refresh in 2013. This motor features a smaller footprint compared to the EM61, allowing for 11.7 kg of weight savings in the inverter/motor package.[1] The motor also trades some peak torque for a more efficient power range.[2] It peaks at 250Nm of torque and has a max rpm of 10,500.

It is used in the following electric vehicles:

It is also used in the following hybrids:

EM57 refresh

In 2018, the EM57 motor received an update with the introduction of the ZE1 Nissan LEAF. Depending on which inverter was mounted on the motor, power levels were increased to 110kW (320Nm) and on the e+ model it was further raised to 160kW (340Nm). The rpm range is also increased to 11,330 on the e+ LEAF. The motor received three tweaks:

  • Slight reduction of permanent magnet material
  • L-shaped coolant inlet
  • Minor casting tweak to front&rear cover

EM47
The Nissan EM47

The EM47 motor released in 2020 with the refreshed Nissan Note.[4] It is only used in Nissan's e-POWER lineup. It is matched with an inverter which has a 40% size reduction and 30% weight reduction.[4] The EM47 has a max speed of 10,500rpm and produce 254Nm of torque. [5]

It is used in the following hybrids:

References
  1. "2013 Nissan Leaf integrated e-powertrain a smaller, lighter package - SAE International". 2017-07-14. Archived from the original on 2017-07-14. Retrieved 2021-02-21.
  2. "e-Powertrain | NISSAN | TECHNOLOGICAL DEVELOPMENT ACTIVITIES". 2013-08-14. Archived from the original on 2013-08-14. Retrieved 2021-02-21.
  3. "Nissan introduces series-hybrid powertrain with Note e-POWER in Japan; small pack, small engine, LEAF motor, low price". Green Car Congress. Retrieved 2021-02-21.
  4. "Nissan launches all-new Note in Japan". Official Global Newsroom. 2020-11-24. Retrieved 2021-03-04.
  5. Yoshimoto, Kantaro; Hanyu, Tomoyuki (2021). "NISSAN e-POWER: 100 % Electric Drive and Its Powertrain Control". IEEJ Journal of Industry Applications. advpub (4): 411–416. doi:10.1541/ieejjia.20013024. S2CID 234135753.
  6. "日産：ノート [ NOTE ] 電気自動車 (e-POWER) | 価格・グレード". Nissan (in Japanese). Retrieved 2021-03-04.
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