A Multimode (10 mode) hybrid transmission
The multimode hybrid transmission consists of a compound planetary gear system where 2 planetary gear systems using a special design single sun gear.
There are 5 interfaces for the transmission where
Where , PC is used as abbreviation for planetary carrier and MG as Motor /Generator . The multimode transmission requires the MG1, MG2, and ICE and to wheels having a park mode. The park mode, the connected interface should resist movement. Ex: grounding to the chassis is one way for park. The park is assumed to be (Boolean) interface. The parked interface will be static member of the compound gear system.
For example a breaking system or a ground to chassis can be considered as parking systems.
In a manufacturing prospective, this system requires only 2 ring gears, 2 planetary carrier + planet gears, one central Sun gear. They system has no clutches in the mechanical path.
The configuration: PC1 connect to MG1, PC2 connected to MG2, Ring1 connected to the ICE and Ring 2 connected to wheels. The Sun gear has a parking mechanism attached.
The transmission can operate on below modes
© yankandpaste®
The multimode hybrid transmission consists of a compound planetary gear system where 2 planetary gear systems using a special design single sun gear.
There are 5 interfaces for the transmission where
- Connected to the internal combustion engine ( Ring 1 )
- Connected to a motor/generator – MG1 ( PC 1 )
- Connected to a motor/generator –MG2 ( PC2 )
- To wheels ( Ring 2 )
- Sun ( to a Park mechanism )
Where , PC is used as abbreviation for planetary carrier and MG as Motor /Generator . The multimode transmission requires the MG1, MG2, and ICE and to wheels having a park mode. The park mode, the connected interface should resist movement. Ex: grounding to the chassis is one way for park. The park is assumed to be (Boolean) interface. The parked interface will be static member of the compound gear system.
For example a breaking system or a ground to chassis can be considered as parking systems.
In a manufacturing prospective, this system requires only 2 ring gears, 2 planetary carrier + planet gears, one central Sun gear. They system has no clutches in the mechanical path.
The configuration: PC1 connect to MG1, PC2 connected to MG2, Ring1 connected to the ICE and Ring 2 connected to wheels. The Sun gear has a parking mechanism attached.
The transmission can operate on below modes
- One motor EV ( Sun - park, PC1 – Park, R1 - Park ) - EV drive, reverse , regen
- Serial hybrid ( Sun – Park , MG1 as generator, MG2 as Motor ) Ext drive, reverse , regen
- Two motor EV ( Ring 1 - Park , MG1 and MG2 as Motors )
- ICE supported one Motor drive ( PC1 – Park , MG2 as Motor )
- Generator Mode ( Sun, PC2,Ring 2 – Park , MG1 as Generator )
- Generator 2 gen mode (Ring 2 - Park, MG1 and MG2 as Generator )
- ICE direct drive ( PC1 , PC2 – Park )
- ICE direct drive with 2 motor charging. ( nothing on park , MG1 and MG2 as Generator )
- Ice direct drive with one motor Charging ( PC2 or PC1 on park as which generator is chosen MG1/MG2 as Gen ),
- 2 Motor regen ( Ring1 Park , MG1 , MG2 as generators)
© yankandpaste®
