Hybrid vehicle powertrain with a device for connecting/disconnecting the electric machine
The present invention is a powertrain for a hybrid vehicle, comprising a driving and receiving machine ( 20 ), a thermal engine ( 10 ) and engine shaft ( 12 ), a speed variation device ( 14 ) including an engine epicyclic gear train ( 24 ) with a sun gear ( 34 ) and a crown ( 42 ) which are each connected to the engine shaft ( 12 ) by an engine controlled coupling ( 26, 28 ) and to a fixed part ( 40 ) of the powertrain by a one-way automatic coupling ( 30, 32 ). A planet gear carrier ( 46 ) and a machine epicyclic gear train ( 60 ) are arranged on a shaft ( 62 ) substantially parallel to engine shaft ( 12 ). The planet gear carrier comprises a sun gear ( 64 ), a crown ( 72 ), a planet gear carrier ( 68 ) and an epicyclic gear train controlled coupling ( 88 ). The speed variation device ( 14 ) comprises a device ( 94 ) for connecting and disconnecting and electrical machine ( 20 ) with a machine epicyclic gear train ( 60 ).
1. A powertrain for a hybrid vehicle, comprising a driving and receiving machine, a thermal engine including an engine shaft, a speed variation device including an engine epicyclic gear train with a sun gear and a crown which are each connected to the engine shaft by an engine controlled coupling and to a fixed part of the powertrain by a one-way automatic coupling and a planet gear carrier, and a machine epicyclic gear train located on a shaft that is parallel to the engine shaft and comprising a sun gear, a crown, a planet gear carrier and an epicyclic gear train controlled coupling, and wherein the speed variation device comprises a device for connection and disconnection of a machine of the driving and receiving machine with the machine epicyclic gear train.
2. The powertrain as claimed in claim 1 , wherein the device for connection and disconnection of the driving and receiving machine comprises a toothed connecting wheel and a machine controlled coupling carried by a shaft of the sun gear of the machine epicyclic gear train.
3. The powertrain as claimed in claim 1 , wherein the device for connection and disconnection comprises a toothed wheel fixedly carried by a shaft of the sun gear of the machine epicyclic gear train and a machine controlled coupling carried by a sleeve surrounding a rotor of the driving and receiving machine and comprising a toothed pinion gear cooperating with the toothed wheel which is fixedly carried by the shaft of the sun gear.
4. The powertrain as claimed in claim 3 , wherein the toothed wheel which is fixedly carried by the shaft of the sun gear comprises a coupling surface for a epicyclic gear train controlled coupling.
5. The powertrain as claimed in claim 1 , wherein the shaft of sun gear comprises a coupling surface for the epicyclic gear train controlled coupling.
6. The powertrain as claimed in claim 1 , comprising a toothed connecting wheel which carries at least one coupling surface with at least a machine controlled coupling.
7. The powertrain as claimed in claim 2 , comprising a toothed connecting wheel which carries at least one coupling surface with at least the machine controlled coupling.
8. The powertrain as claimed in claim 1 , comprising a toothed connecting wheel carrying a coupling surface with the epicyclic gear train controlled coupling.
9. The powertrain as claimed in claim 2 , comprising a toothed connecting wheel carrying a coupling surface with the epicyclic gear train controlled coupling.
10. The powertrain as claimed in claim 1 , wherein the engine controlled coupling comprises a double-acting synchromesh.
11. The powertrain as claimed in claim 2 , wherein the engine controlled coupling comprises a double-acting synchromesh.
12. The powertrain as claimed in claim 3 , wherein the engine controlled coupling comprises a double-acting synchromesh.
13. The powertrain as claimed in claim 4 , wherein the engine controlled coupling comprises a double-acting synchromesh.
14. The powertrain as claimed in claim 5 , wherein the engine controlled coupling comprises a double-acting synchromesh.
15. The powertrain as claimed in claim 6 , wherein the engine controlled coupling comprises a double-acting synchromesh.
16. The powertrain as claimed in claim 7 , wherein the engine controlled coupling comprises a double-acting synchromesh.
17. The powertrain as claimed in claim 1 , wherein the machine of the driving and receiving machine is an electrical machine.