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公开(公告)号：EP0806592A3
公开(公告)日：1998-11-25
申请号：EP96120385
申请日：1996-12-18
申请人： AISIN AW CO
发明人： KUBO TAKAYUKI , NISHIDA MASAAKI , YAMAMOTO YOSHIHISA , SUZUKI AKITOMO , TSUTSUI HIROSHI , TSUKAMOTO KAZUMASA
CPC分类号： F16H61/061 , F16H59/72 , F16H2059/144 , F16H2061/0078 , F16H2061/0087 , Y10T477/6937 , Y10T477/6939
摘要： The present invention has been made to execute speed change control appropriately under any traveling condition during an up-shift control in speed change by change-over, without increasing the number of control logic. Engagement side hydraulic pressure for the friction element to be engaged sweeps up as a result of arithmetic operation by torque phase speed change control. Disengagement side hydraulic pressure for the friction element to be disengaged is calculated by initial speed change control, dependent on the engagement side hydraulic pressure. The engagement side hydraulic pressure acts primarily and the disengagement side hydraulic pressure carries out follow-up control dependent on the engagement side pressure. Consequently, the same control can be executed regardless of power-on state or power-off state and regardless of a vehicle traveling condition. Accordingly, speed change control can be always executed on the same control stage.
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公开(公告)号：EP0780602A3
公开(公告)日：1998-12-09
申请号：EP96119440
申请日：1996-12-04
申请人： AISIN AW CO
发明人： TSUTSUI HIROSHI , TSUKAMOTO KAZUMASA , HAYABUCHI MASAHIRO , NISHIDA MASAAKI , YAMAMOTO YOSHIHISA , KANO TOSHIHIRO , KUBO TAKAYUKI , TSUCHIYA SAOTO
CPC分类号： F16H61/061 , F16H59/24 , F16H59/42 , F16H59/44 , F16H59/72 , F16H61/08 , F16H2059/425 , F16H2061/0087 , Y10T477/6937 , Y10T477/6939 , Y10T477/693958
摘要： Shift shocks by controlling the hydraulic pressure on the hydraulic servos of the friction engagement elements. A control apparatus calculates a target hydraulic pressure P
TA for a condition at the start of the inertia phase in accordance with the input torque, and calculates a gradient based on the target hydraulic pressure and a predetermined time t
TA , and performs the first up-sweep of hydraulic pressure with the gradient. Then, a relatively gradual gradient δP
TA is set based on a target rotation change rate for the input rotational speed to provide a predetermined change amount when the hydraulic pressure becomes the target hydraulic pressure P
TA . The control apparatus performs the second up-sweep with the gradient δP
TA . When the rotational speed change ΔN of the input rotation becomes a rotation change start determining rotational speed dN
S that is detectable by an input shaft rotational speed sensor, the control apparatus feedback-controls the hydraulic pressure with a predetermined gradient while referring to the input rotation change. Further, the control apparatus detects the target shift start time and the rotational speed change rate at the target shift start time to learn and correct the target hydraulic pressure P
TA , the gradient δP
TA of the second sweep section, and the target shift start time t
aim .
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