发明名称 aparelho de controle para transmissão veicular operada hidraulicamente.
摘要 When switching to a forward running is made while a vehicle is running in a reverse direction, a switching to the forward running condition is made at an early time to thereby prevent the deterioration of the durability of the hydraulic engaging element due to slipping. For that purpose, when a vehicle speed (V) has exceeded a predetermined value (YVa) in a reverse range (R) and also when the vehicle speed (V) has never fallen below the predetermined value (YVa) in a neutral range (N), a reverse signal (FREV = 1) is outputted. If FREV = 1 at the time of switching to the forward range, the relationship between the vehicle speed and the speed stage (speed change map) is set to one (a reverse-running-measure speed change map) which is different from that at an ordinary time, to thereby determine the speed stage to be established. Then, a low speed stage is established even at a relatively high vehicle speed. Switching is thus made at an early time to the forward running condition with a large torque to be transmitted via the low speed stage. By using a sensor that can detect the actual direction of running of the vehicle whether it is in the forward direction or reverse direction, the reverse-running-measure speed change map is selected as the speed change map when the direction of running of the vehicle to be detected in the forward range is in the reverse direction. <IMAGE>
申请公布号 BR9704875(B1) 申请公布日期 2010.11.03
申请号 BR19979704875 申请日期 1997.09.25
申请人 发明人 TATSUYUKI OHASHI;HIDEO FUKUSHI;OSAHIDE MIYAMOTO;NORIO NAKAUCHI
分类号 F16H59/46;F16H59/08;F16H59/44;F16H61/02;F16H61/04;F16H61/16 主分类号 F16H59/46
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