Apparatus, method and computer program for actuating a disconnect clutch
AssigneeZF Friedrichshafen AG
InventorOlaf Moseler
Life of this patent
Estimating the term…
Abstract
An apparatus, method and computer for actuating a disconnect clutch which is arranged between a first drive unit and a second drive unit of a hybrid drive and which can be actuated by means of a hydraulic actuating element in order to couple or decouple the first drive unit to or from the rest of a powertrain. This is accomplished by adapting a transmission hydraulic pressure level to a disconnect clutch hydraulic pressure level required for actuating the disconnect clutch by a pressure converter arranged between the actuating element and a hydraulic medium supply for a transmission.
Claims18
An apparatus for actuating a disconnect clutch arranged between a first drive unit and a second drive unit of a hybrid drive, the disconnect clutch being hydraulically actuatable in order to one of couple and decouple the first drive unit one of to and from the rest of a powertrain, the apparatus comprising:
- an actuating element for hydraulically actuating the disconnect clutch;
- and
- a pressure converter arranged between the actuating element and a hydraulic medium supply for a transmission in order to adapt a transmission hydraulic pressure level to a disconnect clutch hydraulic pressure level required for actuating the disconnect clutch;
- wherein the actuating element includes a concentric slave cylinder arranged on a high-pressure side of the pressure converter for actuating the disconnect clutch.
An apparatus for actuating a disconnect clutch arranged between a first drive unit and a second drive unit of a hybrid drive, the disconnect clutch being hydraulically actuatable in order to one of couple and decouple the first drive unit one of to and from the rest of a powertrain, the apparatus comprising:
- an actuating element for hydraulically actuating the disconnect clutch;
- and
- a pressure converter arranged between the actuating element and a hydraulic medium supply for a transmission in order to adapt a transmission hydraulic pressure level to a disconnect clutch hydraulic pressure level required for actuating the disconnect clutch,
- wherein an input-side low-pressure cylinder and an output-side high-pressure cylinder of the pressure converter are integrated in the transmission.
A method for actuating a disconnect clutch arranged between a first drive unit and a second drive unit of a hybrid drive, and capable of a actuation by a hydraulic actuating element in order to one of couple and decouple the first drive unit one of to and from the rest of a powertrain, wherein the actuating element includes a concentric slave cylinder arranged on a high-pressure side of the pressure converter for actuating the disconnect clutch, the method comprising:
- adapting a transmission hydraulic pressure level to a disconnect clutch hydraulic pressure level that is required for the actuation of the disconnect clutch by a pressure converter arranged between the actuating element and a hydraulic medium supply for a transmission.
A computer program with a program code for controlling a hydraulic pump coupled to a pressure converter so that a hydraulic pressure level of a transmission environment can be adapted by the pressure converter to a disconnect clutch hydraulic pressure level required for actuating a disconnect clutch when the computer program runs on a programmable hardware component.
Dependencies are inferred from the claim text.