Title:
VEHICLE TRANSMISSION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021196039
Kind Code:
A
Abstract:
To provide a control device, for a vehicle transmission mounted with a switching mechanism, capable of curbing an increase in friction generated between sliding surfaces of a shift fork and the switching mechanism when mating teeth of the switching mechanism and mating teeth of a transmission gear are engaged with each other in an imperfect condition.SOLUTION: When a transmission ratio γ which is a ratio of a rotation speed Ni of an input shaft 18 to a rotation speed No of an output shaft 22 is equal to a target transmission ratio γ* and a rotation angle θbr of a shift barrel 34 is not included in a stipulated angle region (θbr1 to θbr2) with respect to the target transmission ratio γ*, because the shift barrel 34 is rotated in a direction to increase a deviation of the rotation angle θbr of the shift barrel 34 away from the stipulated angle region (θbr1 to θbr2), the switching mechanism 30 is prevented from being continuously pressed by the shift fork 32 and thereby curbing an increase in friction generated at a sliding section 82 between the shift fork 32 and the switching mechanism 30.SELECTED DRAWING: Figure 8
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Inventors:
KANO TOMOYUKI
YANAGIDA TOMOAKI
KURIMOTO TOMOYASU
YANAGIDA TOMOAKI
KURIMOTO TOMOYASU
Application Number:
JP2020104885A
Publication Date:
December 27, 2021
Filing Date:
June 17, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H63/18; F16D11/10; F16H63/30
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda