Toyota/Lexus GS300h CVT

NOTE : This motor is as of yet untested in a real world application.

Forum board : https://openinverter.org/forum/viewtopic.php?f=14&t=949#p15109

Description

The L210 is a continuously variable transmission (CVT) which can be found in the Lexus gs300h. It is very similar in design to the gs450h CVT. It contains two motor-generators - MG1 and MG2. When used as originally intended, MG1 is spun by the ICE, via a planetary gear system, and acts primarily as a generator. MG1 also acts as a starter motor for the ICE. MG2 is connected to the output shaft via a second planetary gear system to provide traction directly to the rear wheels.

The ratio between MG1 and the output shaft is 2.6:1. The ratio between MG2 and the output shaft is 3.333:1.

The official power output of the CVT is 105kW and 300Nm of torque, but this has yet to be tested.

For use in a pure EV application, the ICE input shaft can be locked stationary with a plate or bar. This allows traction to be provided by both MG1 and MG2.

Dimensions

To do

Oil pump

The L110 CVT, found in the gs450h, has two oil pumps. An internal mechanical pump and an external 12V electric pump. The internal mechanical oil pump is driven by the ICE. Locking the ICE input shaft to allow MG1 to provide traction means that the internal oil pump no longer functions. This makes the external 12V electric oil pump essential when using the CVT in a pure EV application.

One key difference between the L210 (gs300h) and the L110 (gs450h) is that the L210 only has an internal oil pump. However, the internal oil pump is driven by both the ICE and/or the rotation of MG2. So, even when you lock the ICE input shaft to allow MG1 to provide traction, MG2 will still drive the oil pump whenever the car moves. Since there are no gears/speeds in this CVT (and hence no clutch packs, etc.), the oil is only required for cooling and lubricating the bearings.

Connections

Left hand side

Left hand side connections

1. MG1 3-phase power connection
2. MG1 resolver (and temperature) port
3. MG2 resolver (and temperature) port

Right hand side

Right hand side connections

1. Water input/output for oil to water heat exchanger
2. Mechanical shifter and shift sensor port
3. Ground strap
4. MG2 3-phase power connection

Resolvers

To do

Shift sensor

To do

Output flange

To do

Part Numbers

Part numbers include 30920-30030. The CVT can be found in the Lexus ES300h, Lexus IS300h, and Toyota Crown Hybrid. The matching inverter is part number G9200-30132, which is a Gen 3 inverter.