FIELD: transportation.
SUBSTANCE: invention relates to the vehicles. Four-wheel drive vehicle transmission control device contains an electronic control unit that switches the control mode to low gear ratio when three conditions are met. First condition is that the vehicle is stopped. Second condition – the transfer of power between the source of drive force and the input shaft is disabled. Third condition is the control mode with low gear ratios. Control mode switches from four-wheel drive mode with high gear ratios to two-wheel drive mode with high gear ratios, when the first and second conditions are met during control in four-wheel drive mode with high gear ratios. Control mode switches from two-wheel drive mode with high gear ratios to low gear ratio control mode when the third condition is fulfilled in a state in which the first condition and the second condition are already met.
EFFECT: increased rate of establishment of the control mode.
3 cl, 11 dwg
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