System and method for increasing upshift engine torque

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United States of America Patent

PATENT NO 11718302
APP PUB NO 20210146931A1
SERIAL NO

17097260

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A drive train control method includes transmitting a total time period of a stroke phase and a torque phase of an upshift from a transmission control unit of an automatic transmission to an engine control unit of an engine. The method also includes closing a first shift element of the automatic transmission and opening a second shift element of the automatic transmission during the upshift. A control pressure of the first shift element increases during the torque phase relative to the control pressure of the first shift element at an end of the stroke phase. A control pressure of the second shift element decreases during the torque phase relative to the control pressure of the second shift element at the end of the stroke phase. The method further includes, based at least in part on the total time period of the stroke and torque phases, increasing an actual torque of the engine during the upshift such that the actual torque of the engine increases to a higher gear torque prior to an end of the torque phase.

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Patent Owner(s)

Patent OwnerAddress
ZF FRIEDRICHSHAFEN AGGERMANY

International Classification(s)

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  • 2020 Application Filing Year
  • B60W Class
  • 4824 Applications Filed
  • 3154 Patents Issued To-Date
  • 65.39 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gokan, Yasuhiro Dublin, US 3 17
Hopp, Christopher Dublin, US 4 8
Kobayashi, Makoto Utsunomiya, JP 647 7424
Mohr, Frieder Tettnang, DE 1 1
Mori, Ryuichi Utsunomiya, JP 16 331
Murata, Ryuji Utsunomiya, JP 16 196
Shitani, Yoshitaka Ann Arbor, US 1 1
Stark, Thomas Wasserburg, DE 41 370
Tucker, Matthew J Plain City, US 3 24
Villing, Christian Friedrichshafen, DE 6 15

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges58918901 - 10050100150200250300350400450500550600650

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