US 11,446,997 B2 · Hybrid powertrain with a gearbox and method to control the hybrid powertrain

Abstract

A hybrid powertrain that includes a combustion engine (4) and a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10) connected to the input shaft (8); a second planetary gear (12) connected to the first planetary gear (10); a first electrical machine (14) connected to the first planetary gear (10); a second electrical machine (16) connected to the second planetary gear (12); at least one gear pair (G1, 60, 72) connected to the first planetary gear (10) and to the output shaft (20); and at least one gear pair (G2, 66, 78) connected to the second planetary gear (12) and to the output shaft (20), a countershaft (18) provided between the combustion engine (4) and the gearbox (2) so that the engine (4) can be disconnected from the gearbox (2). Also disclosed is a method for controlling the disclosed hybrid powertrain (3). Also a vehicle (1) includes such a gearbox (2), and a method to control such a gearbox (2). Also a computer program (P) to control a gearbox.

Claims15

Dependent claims

A hybrid powertrain comprising:

a combustion engine and a gearbox with an input shaft and an output shaft;
a first planetary gear connected to the input shaft and a first mainshaft;
a second planetary gear connected to the first planetary gear and a second mainshaft;
a first electrical machine connected to the first planetary gear;
a second electrical machine connected to the second planetary gear;
at least one gear pair connected to the first planetary gear and to the output shaft;
and
at least another gear pair connected to the second planetary gear and to the output shaft;
and
a clutch device provided between the combustion engine and the gearbox so that the engine can be disconnected from the gearbox, wherein a second planet wheel carrier of the second planetary gear is connected to the second mainshaft, and wherein the input shaft is connected to a first planet wheel carrier of the first planetary gear.

7 more elements

A method for controlling a hybrid powertrain for effecting gear changes without torque brakes, the hybrid powertrain comprising;

a combustion engine;
a gearbox having an input shaft, an output shaft, a first planetary gear connected to the input shaft and a first mainshaft;
a second planetary gear connected to the first planetary gear and a second mainshaft;
a first electrical machine connected to the first planetary gear;
a second electrical machine connected to the second planetary gear;
at least one gear pair connected to the first planetary gear and to the output shaft;
at least another gear pair situated between and connected to the second planetary gear and to the output shaft;
wherein a second planet wheel carrier of the second planetary gear is connected to the second mainshaft and wherein the input shaft is connected to a first planet wheel carrier of the first planetary gear, the method comprising:
a) operating a clutch device to disconnect the combustion engine,
b) disconnecting rotatable components, of the first planetary gear from one another,
c) connecting the at least another gear pair, which is connected to the second planetary gear,
d) disconnecting the at least one gear pair which is connected to the first planetary gear, and
e) connecting two rotatable components of the first planetary gear to one another.

10 more elements

Dependencies are inferred from the claim text.

Hybrid powertrain with a gearbox and method to control the hybrid powertrain

Life of this patent

Hybrid powertrain with a gearbox and method to control the hybrid powertrain

Life of this patent

Abstract

Claims15