CONTROL DEVICE FOR VEHICLE AUTOMATIC TRANSMISSION专利检索-..大气温度专利检索查询-专利查询网

CONTROL DEVICE FOR VEHICLE AUTOMATIC TRANSMISSION
申请号	JP34346089	申请日	1989-12-31	公开(公告)号	JPH03204465A	公开(公告)日	1991-09-06
申请人	AISIN AW CO;			发明人	SAKAKIBARA SHIRO; OSADA YUKIHIRO;
摘要	PURPOSE:To obtain a variable speed position corresponding to the low mu road surface condition by correcting a target torque ratio based on a detected road surface condition factor, and outputting a variable speed command on the bases of a corrected target torque ratio and an actual torque ratio. CONSTITUTION:In a control device of a vehicle automatic transmission, a road surface condition detection unit A15 sets a road surface condition factor from the road surface condition detected by a low mu road detecting means 109. Then, a variable speed judgement processing unit B5 corrects a target torque determined by an optimum fuel cost-maximum power judgement unit B3 by the use of the road surface condition factor, and determines variable speed direction by a corrected target torque ration and an actual torque ratio obtained by a calculation unit B2 to output a variable speed command to a CVT variable speed motor 7, and further output a CVT unit variable speed calculated by a calculation unit B4 to the CVT variable speed motor. Starting of a vehicle on the low mu road can thus be smoothly performed without causing slip.
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