US 2015/0065294 A1 · DRIVE UNIT FOR A VEHICLE, AND OPERATING METHOD THEREFOR

Abstract

A drive device for a vehicle having a combustion engine and a multistage manual transmission having first and second sub-transmissions, each of which has a separate input shaft. A first input shaft of the first sub-transmission couples, via a first clutch, the combustion engine or is assigned an electrical machine. A second input shaft of a second sub-transmission couples, via a second clutch, the combustion engine. The first input shaft is additionally assigned a start-up element having at least one hydrodynamic transfer element, which has first and second functional wheels which together form a working chamber. The working chamber can be filled with fluid in order to generate a hydrodynamic transfer torque such that at least one start-up function, affecting the first sub-transmission, can carried out by way of the start-up element.

Claims20

Dependent claims

1-19. (canceled)

A drive device for a vehicle comprising:

an internal combustion engine (VM),
a multistage manual transmission (SG) having two sub-transmissions (TG1, TG2), the first sub-transmission having a first transmission input shaft (GE1), and the second sub-transmission having a second transmission input shaft (GE2),
the first transmission input shaft (GE1) of the first sub-transmission (TG1) being either assigned a first clutch (K1, K1′), which drivingly couples the first transmission input shaft (GE1) to the internal combustion engine (VM), or being assigned an electric machine (EM),
the second transmission input shaft (GE2) of the second sub-transmission (TG2) being assigned a second clutch (K2), which drivingly couples the second transmission input shaft (GE2) to the internal combustion engine (VM),
the first transmission input shaft (GE1) being additionally assigned a start-up element (AR, AR′, AR″), which comprises at least one hydrodynamic transfer element (HK, HD, HB),
the at least one hydrodynamic transfer element has a first functional wheel (FR1, STa, STb) and a second functional wheel (FR2, RT), the first and the second functional wheels together form a working chamber (FL, FLa, FLb), which fills with fluid to generate a hydrodynamic transfer torque such that at least one start-up function, affecting the first sub-transmission (TG1), is implemented by the start-up element (AR, AR′, AR″).

3 more elements

A method of operating a drive device for a vehicle, having an internal combustion engine (VM) and a transmission, designed as a multistage manual transmission (SG) having first and second sub-transmissions (TG1, TG2), the first sub-transmission having a first transmission input shaft (GE1), the second sub-transmission having a second transmission input shaft (GE2), the first transmission input shaft (GE1) of the first sub-transmission (TG1) is assigned a first clutch (K1, K1′) by which the first transmission input shaft (GE1) is either drivingly connectable to the internal combustion engine (VM), or is assigned an electric machine (EM), and the second transmission input shaft (GE2) of the second sub-transmission (TG2) is assigned a second clutch (K2) by which the second transmission input shaft (GE2) is drivingly connectabled to the internal combustion engine (VM), the method comprising the steps of:

implementing at least one hydrodynamic start-up function by a start-up element (AR, AR′, AR″), the start-up element (AR, AR′, AR″) being assigned to the first transmission input shaft (GE1) and comprising one hydrodynamic transfer element (HK, HD, HB) comprising a first functional wheel (FR1, STa, STb) and a second functional wheel (FR2, RT) which together form a working chamber (FL, FLa, FLb) for receiving fluid in order to generate a hydrodynamic transfer torque.

Dependencies are inferred from the claim text.

Facts

Application

14/390,079Filed 4 Mar 2013

Priority

DE 10 2012 205 823.011 Apr 2012

Published

5 Mar 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification24 codes

F16H 47/06
Combinations of mechanical gearing with fluid clutches or fluid gearing: the fluid gearing being of the hydrokinetic type
B60K 6/48
Characterised by the architecture of the hybrid electric vehicle: parallel type
B60T 1/062
Acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels: acting on transmission parts
B60T 1/087
Using fluid or powdered medium: in hydrodynamic, i.e. non-positive displacement, retarders

Drive unit for a vehicle, and operating method therefor

Life of this patent

Drive unit for a vehicle, and operating method therefor

Life of this patent

Abstract

Claims20