Method for operating a vehicle drivetrain, and drivetrain module for such a vehicle
US-10703191-B2 · Jul 7, 2020 · US
Method for operating a hybrid powertrain
US11565702B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11565702-B2 |
| Application number | US-201816762392-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 10, 2018 |
| Priority date | Nov 8, 2017 |
| Publication date | Jan 31, 2023 |
| Grant date | Jan 31, 2023 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A method for operating a hybrid drive train of a motor vehicle includes: starting the motor vehicle solely with the aid of an electric machine; engaging a torque converter lockup clutch for rotationally fixing an impeller of a torque converter to a turbine wheel of the torque converter, wherein the turbine wheel is rotationally fixed to the electric machine; and engaging a clutch in order to drivingly connect the impeller to a motor vehicle drive unit, in order to start the motor vehicle drive unit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for operating a hybrid drive train ( 1 ) of a motor vehicle ( 2 ), comprising: starting the motor vehicle ( 2 ) solely with an electric machine ( 4 ); after starting the motor vehicle ( 2 ), engaging a torque converter lockup clutch ( 10 ) for rotationally fixing an impeller ( 6 ) of a torque converter ( 5 ) to a turbine wheel ( 7 ) of the torque converter ( 5 ), the turbine wheel ( 7 ) rotationally fixed to the electric machine ( 4 ); and after engaging the torque converter lockup clutch ( 10 ), engaging a clutch ( 8 ) in order to drivingly connect the impeller ( 6 ) to a motor vehicle drive unit ( 9 ) and thereby start the motor vehicle drive unit ( 9 ). 2. The method of claim 1 , wherein the clutch ( 8 ) is disengaged before starting the motor vehicle ( 2 ). 3. The method of claim 1 , further comprising disengaging the torque converter lockup clutch ( 10 ) before engaging the clutch ( 8 ). 4. The method of claim 3 , further comprising engaging the torque converter lockup clutch ( 10 ) after starting the motor vehicle drive unit ( 9 ). 5. The method of claim 1 , wherein a driving connection between the torque converter ( 5 ) and a transmission output shaft ( 14 ) is disconnected before engaging the clutch ( 8 ). 6. The method of claim 1 , wherein engaging the clutch ( 8 ) comprises engaging the clutch ( 8 ) when a rotational speed of the impeller ( 6 ) of the torque converter ( 5 ) corresponds to a rotational speed of a rotor ( 11 ) of the electric machine ( 4 ). 7. A hybrid drive train ( 1 ) configured for implementing the method of claim 1 .
Assignees
Inventors
Classifications
Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means · CPC title
- B60W30/192Primary
Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine · CPC title
of lock-up clutches · CPC title
Speed · CPC title
Electric machine connected or connectable to gearbox input shaft · CPC title
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Frequently asked questions
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- What does patent US11565702B2 cover?
- A method for operating a hybrid drive train of a motor vehicle includes: starting the motor vehicle solely with the aid of an electric machine; engaging a torque converter lockup clutch for rotationally fixing an impeller of a torque converter to a turbine wheel of the torque converter, wherein the turbine wheel is rotationally fixed to the electric machine; and engaging a clutch in order to dr…
- Who is the assignee on this patent?
- Zahnradfabrik Friedrichshafen
- What technology area does this patent fall under?
- Primary CPC classification B60W30/192. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 31 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).