Transmission control
AssigneeZF Friedrichshafen AG
InventorsHarald Stehle, Peter Schiele, Günther Maier
Life of this patent
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Abstract
A method (200) for the open-loop control of a gearbox (100) that includes a first and a second proportionally controllable shift element (A-F) is provided. The method includes disengaging (215) the first shift element (A-F) according to a first control profile and engaging (220) the second shift element (A-F) of the gearbox (100) according to a second control profile. The first control profile includes a first variable portion which is determined as a function of a temperature of the gearbox (100).
Claims9
A method (200) for open-loop control of a gearbox (100) that includes a first proportionally controllable shift element (A-F) and a second proportionally controllable shift element (A-F), the method (200) comprising:
- disengaging (215) the first shift element (A-F) of the gearbox (100) according to a first control profile;
- and
- engaging (220) the second shift element (A-F) of the gearbox (100) according to a second control profile,
- wherein the first control profile comprises a first variable portion, and the first variable portion is determined as a function of a temperature of the gearbox (100).
A device (125) for open-loop control of a gearbox (100) that includes a first proportionally controllable shift element (A-F) and a second proportionally controllable shift element (A-F), the device (125) comprising:
- a first interface for connection to the first shift element (A-F);
- a second interface for connection to the second shift element (A-F);
- a processing unit (125);
- and
- a memory storing computer-executable instructions that, when executed by the processing unit (125), cause the processing unit (125) to perform operations comprising
- disengaging the first shift element (A-F) according to a first control profile, and
- engaging the second shift element (A-F) according to a second control profile,
- wherein the first control profile comprises a first variable portion, and the first variable portion is determined as a function of a temperature of the gearbox (100).
Dependencies are inferred from the claim text.