Schaeffler Highlights Transmission Technologies for Improved Function at its 2015 NAIAS Technology Suite
Resource from: Schaeffler Group USA Inc. Likes:156
Jan 14,2015
As the demands for transmission technologies increase with the new generation of automatic transmissions and increasing customer demands, Schaeffler is breaking the old paradigms of design to meet new requirements.
“Even with an 80-year-old technology, new ideas can provide new functions and continue to meet the growing demands for fuel efficient mobility,” said Patrick Lindemann, vice president, product development, transmission technologies North America, Schaeffler USA. “With this in mind, our engineers have developed some truly next-generation technologies that are helping customers meet today’s market needs by innovating what can be considered ‘old’ designs.”
Schaeffler is hosting a Technology Suite (room 360) at the 2015 North American International Auto Show (NAIAS) at Cobo Center in Detroit to showcase its next-generation transmission research and technologies. These technologies were de-veloped to address the challenges that its customers are facing as they work to balance industry standards, government regulations, cost targets, and environmental and sustainability goals.
Key transmission technologies on display at this year’s NAIAS include:
* Integrated Torque Converter (iTC) – Schaeffler’s new torque converter for front and rear drive modern automatic transmissions combines two compo-nents inside the torque converters into one component. The iTC is smaller – as it eliminates the three to five mm piston plate – and lighter, now weighing more than five pounds (or 18 percent) less than previous designs.
* Other key benefits include: added space for damper improvements; reduced complexity in damper connections allows a more compact design; and clutch function improvements from the proximity to the stiffening torus and the positive correlation with turbine thrust.
* Centrifugal pendulum absorber (CPA) – since downsized engines have increased torsional vibrations when compared to their predecessors, Schaeffler developed a torque converter for rear wheel drive applications with improved damper technology. It allows the powertrain to realize a fuel economy benefit of between one to four percent (depending on the baseline) provided by the downsized engine. Using centrifugal force, the CPA is mounted to the damper inside the torque converter. It enables fuel efficient engines to use and reduce CO2 emissions by reducing negative torsional vibrations and at the same time increase comfort.
* Schaeffler’s torque converter CPA was honored with an Automotive News PACE (Premier Automotive Suppliers’ Contribution to Excellence) Award in the product category in 2014.
* Torque converter with piston back pressure compensation – the basis of the innovation is the torque converter lockup clutch. Schaeffler reconfigured its actuation with a basic concept: reduction of the lockup clutch control variables from four to one. Improved lockup control can enable up to three percent fuel economy improvement depending on the baseline.
The company’s torque converter with piston back pressure compensation has been named as a finalist for the 2015 Automotive News PACE Award in the product category.
Shifting clutches for planetary automotive transmissions – Schaeffler has developed next-generation shifting clutches that create a two-stage apply characteristic to allow for better control with larger lift-off gaps. The clutches integrate plate separators to maximize the advantage of the larger gap, while decreasing mass and inertia, and eliminating adhesive to provide an environmentally friendly production method.
Together, these lead to some notable improvements on the vehicle level, such as: fuel economy improvement of one to two percent; mass reduction of 1.1 pounds; reduced space requirement; and shift time improvement of up to 100 milliseconds (ms) with reduction in shift shock complaints.
AWD disconnect clutch – this self-energizing, mechanical wedge clutch pro-vides a connection device for forward and reverse torques. Schaeffler’s new AWD disconnect system utilizes an electro-magnetic actuator with a bi-stable spring to shift the clutch between connected and disconnected states.
The entire system is packaged in an efficient toroidal volume allowing for easy placement within the PTU (power transfer unit) Actuation requires a very short (<10 ms) electric current pulse, so no energy is required to hold the clutch in state. Further, the wedge clutch functions without teeth thus eliminating the possibility of shift clash or shift blockage. All of this provides significant reduction in system component count compared to dog clutch with electro-mechanical shift fork actuator.
This is the 10th consecutive year Schaeffler is participating as a sponsor and exhibitor at NAIAS. This year the company will host media, customers and invited guests in its 10,000¬ square-foot Technology Suite in room 360. In addition to transmission technologies, the company will also show its engine systems and CAFE concept vehicle.
(Schaeffler Group USA Inc.)
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
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