Title:
CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE
Document Type and Number:
Japanese Patent JP2019211044
Kind Code:
A
Abstract:
To provide a control device of a four-wheel drive vehicle, in which output characteristics of a pair of right and left electronic control couplings can be recognized during turning run.SOLUTION: In this control device 70 of a vehicle 10, coefficients of friction μl, μr of pair of left and right electronic control couplings 34L, 34R are estimated on the basis of differential rotational acceleration dωdl/dt, dωdr/dt between an input-side rotating member, that is, a ring gear 52a and output-side rotating members, that are, rear wheels 16L, 16R, so that output characteristics of a pair of the left and right electronic control couplings 34L, 34R can be recognized on the basis of the estimated coefficients of friction μl, μr. Thus, impairing of the turning stability of a four-wheel drive vehicle can be suppressed by performing control for correcting a transmission torque command value so that, for example, the output characteristics of a pair of the left and right electronic control couplings 34L, 34R are uniformized during turning run.SELECTED DRAWING: Figure 3
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Inventors:
SHIMIZU SATOYUKI
Application Number:
JP2018109854A
Publication Date:
December 12, 2019
Filing Date:
June 07, 2018
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H48/19; B60K17/348; B60K23/04; B60K23/08
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda