A Slippery Slope - The What (and Why) of Woven Carbon Friction Material

Continuous clutch slippage? Whose idea was that?! For years, any clutch that was continuously slipping was the mortal enemy of automatic传播和转矩转bob游戏怎么下载换器重建者。在您的一个构建中的滑动离合器意味着热量，并滑动与高热量的离合器衬里失败和保修声明相结合。根据您的客户在您的一个单位中推动滑动离合器的难度，损坏从次要修复到填充离合器材料的润滑通道，导致齿轮系熔断。

But an automatic transmission that is deliberately supposed to slip? Why would anyone ever intentionally design a transmission to have a continuously slipping clutch? That would be crazy!

1996年，通用汽车通过工程以前认为以前认为不可想象的内容：连续滑动的变矩器锁定离合器。bob游戏怎么下载通用汽车推出了EC3系统（也称为EC立方体或ECCC），以控制转换器离合器在其许多传输应用中。EC3代表电子控制离合器容量，系统是软件和硬件的组合，允许扭矩转换器离合器（TCC）在预定的RPM窗口内不断地滑动。bob游戏怎么下载

Prior to the introduction of EC3 (a few viscous clutches in various drivetrain applications notwithstanding), transmission and torque converter rebuilders alike had never serviced a transmission clutch that was intentionally designed to slip. Previously, a slipping clutch meant doing a root cause analysis and — at minimum — repairs to specific hydraulic circuits and clutch components.

在引入EC3后，Rechuilders突然发现自己处于一个新的和奇怪的位置：而不是建立单位以保持单位，他们现在必须了解，诊断和构建将不断滑动的单位！
EC3系统中的一个关键部件是扭矩转换器内部使用的离合器材料。bob游戏怎么下载为了支持恒定滑移的要求，通用汽车开发了一个全新的离合器材料。代替传统的纸质离合器衬里，GM引入了一种由碳纤维的股线编织的织物。他们发现碳纤维是最佳的材料，以承受热量的最佳材料，并且宏观的编织被校准以具有将流过材料流过材料的特定量，以便于冷却和校准滑动速率。

The weave of carbon fiber facilitates cooling and calibrates slip rates by allowing an optimum amount of oil flow through the friction material.

多年来，通用汽车在许多传输平台中使用了编织碳纤维转换器离合器。GM 4T60,4T65,4L30,4L60,5L40,6T40,6T70,6L45和6L80都在部分或全部使用编织碳转换器离合器。该相同的材料也用于与GM共同开发的福特前轮驱动6速度（6F35和6F50）。

The “Catch 22” of Carbon Fiber Clutches

To the detriment of the aftermarket, GM kept this carbon fiber material proprietary. Torque converter rebuilders couldn’t get access to the OE woven carbon material, and traditional clutch materials that were available to rebuilders could not hold up to the stress of a constant slip environment. If you were rebuilding transmissions or torque converters back in the late 1990’s, you probably remember the struggles that the industry experienced as everyone searched for viable solutions.

为了解决这个问题，一些传输构建器制造了液压修改，试图完全消除恒定的滑动功能。根据该单位，这些修改具有显着的意外后果，从驾驶性与过压转换器的关注范围范围内。bob游戏怎么下载Torque转换器零件供应商如Sonnax争先恐后地提供合适的摩擦材料，使建筑商成为惩罚机会在惩罚恒定的净化条件下生存的斗争机会。

Fast forward through the years since the introduction of EC3, and it’s clear that some replacement friction materials have proven to be more successful than others at tackling the problem. No matter how good a builder may feel about their chosen material, however, they still have been forced to find a substitute for the OE woven carbon fabric…until now.

Woven carbon friction ring bonded to converter clutch

Sonnax is proud to announce the aftermarket now has a reliable source of woven carbon friction rings. This is the genuine OE material from the OE supplier, and it’s offered exclusively by Sonnax!

Protect Your Warranty with Woven Carbon Friction Rings from Sonnax

您现在有能力以专为OE编织碳材料为设计的OE性能和耐用性。专门从Sonnax和令人惊讶的负担得起，这些戒指可用于GM和FORD使用的所有尺寸。

• Genuine OE Material- 使用原始OE离合器材料的信心和安心构建您的连续滑动转换器。您的客户会喜欢它！
  
• Easy to Bond-Featuring a pre-applied adhesive, these woven carbon friction rings bond within the same time, temperature and pressure parameters as other rings offered by Sonnax.
  
• Engineered to Match OE Performance-Just like the OE friction material, Sonnax woven carbon products are made up of five segments assembled into rings. While the use of segments maximizes material utilization, there is a compelling technical reason why GM relies on this style of ring. The directional weave patterns of the carbon fiber must be properly oriented for optimal and consistent oil flow through the material, and segmentation allows this to occur. If Sonnax were to offer woven carbon in non-segmented, solid rings, the oil flow and slip rates would differ from the OE product. The cost of the rings also would be significantly higher due to material waste during manufacturing.
  
• 适用于4速和6速滑动转换器-Transmission rebuilders are reporting that — while some of the GM 4-speed applications have a larger “window of allowable slip” and can initially get by with alternative aftermarket TCC materials — the newer 6-speed applications are much more sensitive to the amount of slip allowed by the transmission control unit. In-vehicle testing recently completed by Sonnax confirms the tight window of allowable slippage and sensitive calibration found in later-model units. To hit this tight window, it is vital to use the friction material that was specifically engineered for this purpose: woven carbon.