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Patent Searching and Data


Title:
METHOD FOR CALIBRATING A CHARACTERISTIC MAP OF A DRIVE TRAIN OF A WORKING MACHINE AND WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/110259
Kind Code:
A3
Abstract:
The invention relates to a method for calibrating a characteristic map (14) of a drive train (1) of a working machine (2), said map comprising a brake pedal characteristic curve (15) of a brake system (11) and a clutch characteristic curve (16) of a drive clutch (5). According to the claimed method, an opening point (17) is calibrated when the drive clutch (5) is open in accordance with a pedal path (27, 28) when a brake pedal of the brake system (11) is actuated, and/or a closing point (18) when the drive clutch (5) is closed in accordance with a pedal path (27, 28) when the brake pedal is released. When the brake pedal is actuated and/or released, at least one actual rotational speed profile (19) of the drive train (1) is determined, the determined actual rotational speed profile (19) is compared to a stored corresponding target rotational speed profile (20) and the opening point (17) and/or closing point (18) of the drive clutch (5) is adapted to minimize the difference between the actual rotational speed profile (19) from the desired rotational speed profile (20). The invention also relates to a working machine (2) for carrying out the method.

Inventors:
HÖFLER, Hans (Auf dem Ruhbühl 187, Immenstaad am Bodensee, 88090, DE)
BREHMER, Udo (Friedrichstr. 6/1, Friedrichshafen, 88045, DE)
KURZ, Thomas (Oberdorfer Str. 52, Langenargen, 88085, DE)
Application Number:
EP2018/081280
Publication Date:
September 26, 2019
Filing Date:
November 15, 2018
Export Citation:
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Assignee:
ZF FRIEDRICHSHAFEN AG (Löwentaler Straße 20, Friedrichshafen, 88046, DE)
International Classes:
F16D48/00
Foreign References:
EP2781782A12014-09-24
EP2337977A12011-06-29
EP2514987A12012-10-24
US20070054776A12007-03-08
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