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21. 发明专利

JPH02253043A CONTROL DEVICE FOR VEHICULAR HYDRAULIC ACTUATED TRANSMISSION GEAR 失效
公开(公告)号：JPH02253043A
公开(公告)日：1990-10-11
申请号：JP7417289
申请日：1989-03-27
申请人： HONDA MOTOR CO LTD
发明人： ISHIKAWA KEIICHI , HATAYAMA KAZUMA , SAKAI TAKAFUMI
IPC分类号： F16H3/08 , F16H59/24 , F16H59/44 , F16H59/46 , F16H59/70 , F16H61/04 , F16H61/06 , F16H61/08 , F16H61/10 , F16H61/28
摘要： PURPOSE:To relieve the established shock of a backward power transmission system by starting the boost-buffer action at lower pressure by an accumulator for a shared-forward-backward clutch at the established time of the backward power transmission system compared to the speed change time to the specific power transmission system. CONSTITUTION:At the time of speed change in the forward range of a manual valve 9 to a specific power transmission system, oil flows only into the first accumulator chamber 20 of an accumulator A4 for a shared-forward-backward hydraulic clutch, and when its pressing force exceeds the energizing force of an elastic member 16, a piston 15 starts its receding motion and the buffer action is started. At the time of changing over to the backward range, however, oil flows not only into the first accumulator 20 but also into the second accumulator 21, the piston 15 recedes against the energizing force of the elastic member 16 during the time of relatively low pressure, and the buffer action is started. At this time, the volume of the accumulator is enlarged according to the sum of the pressure receiving areas S1, S2 of both chambers 20, 21. The established shock of the backward power transmission system can be thus relieved.

22. 发明专利

JPH02159459A CONTROL DEVICE OF HYDRAULIC TRANSMISSION FOR VEHICLE 失效
公开(公告)号：JPH02159459A
公开(公告)日：1990-06-19
申请号：JP31298488
申请日：1988-12-13
申请人： HONDA MOTOR CO LTD
发明人： HATAYAMA KAZUMA , YOSHIMURA YOSHIHIRO
IPC分类号： F16H3/08 , F16H59/08 , F16H61/00 , F16H61/02 , F16H61/06 , F16H61/08
摘要： PURPOSE:To prevent dragging phenomenon from occurring by rapidly discharging oil from a low speed engagement element by opening an oil discharge control valve in linked motion with a switching operation of a manual valve for disconnecting an oil passage from an oil pressure source. CONSTITUTION:When a vehicle stops and stands with a manual valve 9 in an operation position for forward movement, a second shift valve 102 is in a down shift position and supplies oil to a low speed hydraulic engagement element. When the manual valve 9 is switched to the position N, etc. for disconnecting an oil passage L2 from an oil pressure source, the shift valve 102 is switched to an up shift position, and the low speed hydraulic engagement element is connected to an oil discharge passage LD1 with an oil discharge control valve 181 interposed in between. Because the oil discharge control valve 181 is opened in linked motion with the switching operation of the manual valve 9, oil is rapidly discharged from the low speed hydraulic engagement element. Thus the dragging phenomenon of the low speed hydraulic engagement element can be prevented only by additional connection of an oil passage L23 to the manual valve.

23. 发明专利

JPH0130023B2 失效
公开(公告)号：JPH0130023B2
公开(公告)日：1989-06-15
申请号：JP18880984
申请日：1984-09-11
申请人： HONDA MOTOR CO LTD
发明人： MAEZONO MASAKAZU , NISHIMURA SADANORI , ISHIKAWA KEIICHI , YAMASHITA MASARU , HATAYAMA KAZUMA
IPC分类号： F16H61/02 , F16H61/08 , F16H61/18

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