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CN101910685B 无级变速器的液压控制系统及方法 失效 - 权利终止

无级变速器的液压控制系统及方法
摘要：
一种无级变速器的液压控制系统，包括：第一滑轮压力调节阀(17)，所述第一滑轮压力调节阀对用于所述液压控制的作为源压力的管路压力(Pl)进行调节以获得第一滑轮压力(Pin)；故障保护阀(19)，所述故障保护阀选择并输出所述第一滑轮压力(Pin)和在由于过大的第一滑轮压力(Pin)引起故障时施加至驱动带轮(21)的故障保护液压压力(第二滑轮压力(Pout))中的任一个到驱动带轮(21)；以及调节所述管路压力(Pl)的第一调节阀(12)和第二调节阀(13)。故障保护阀(19)的输出压力(Psf)以反馈的方式供给至第一和第二调节阀(12、13)作为驱动带轮(21)侧液压压力，从而调节管路压力(Pl)。
摘要（英）：

A hydraulic control system of continuously variable transmission includes: a first sheave pressure regulating valve (17) that regulates a line pressure (Pl), which is used for hydraulic control as a source pressure, to obtain a first sheave pressure (Pin); a fail-safe valve (19) that selects and outputs any one of the first sheave pressure (Pin) or a fail-safe hydraulic pressure (second sheave pressure Pout) that is applied to a drive pulley (21) at the time of a failure due to an excessive first sheave pressure (Pin) to the drive pulley (21); and a first regulator valve (12) and a second regulator valve (13) that regulate the line pressure (Pl). An output pressure (Psf) of the fail-safe valve (19) is supplied to the first and second regulator valves (12 and 13) in a feedback manner as a drive pulley (21) side hydraulic pressure to thereby regulate the line pressure (Pl).

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