OEMs: “In addition to our extensive expertise in powertrain engineering and testing, our ‘neutral’ position – when it comes to the choice of hybrid system components – is a further advantage for the customer. With AVL not being a component manufacturer, OEMs can choose 2 5 F O C U S Photos: Linamar, AVL TECHNICAL OVERALL SOLUTION Based on customer requirements, AVL employs simulations to devise an overall transmission concept that takes account of component choice and dimensioning. Possible suppliers for specific parts can also be suggested and selected by AVL. In a parallel process, AVL software specialists define a basic operating strategy and present it to the customer as a technical overall solution. “This overall solution,” Denise Gray, Vice President of Electrification, AVL Powertrain Engineering, explains, “incorporates all of AVL’s engine, transmission and electrification expertise, along with the extensive experience we have gained in numerous engineering projects. Combined with AVL’s highly advanced simulation, development tools and testbeds we can provide our customers with the best possible solution for their vehicle.” As well as hardware design, the experts at AVL also develop the operating strategy for the e-axle system and take care of the overall system’s calibration. “Control software programming and system calibration are very large work packages in the overall project,” Othmar Peier, Senior Program Manager of Hybrid, AVL Engineering and Technology Powertrain Systems, explains. “For designing and fine-tuning the functions, we use equally advanced AVL tools, such as AVL DRIVE, CRUISE and VSM (Vehicle Simulation Model). Of great significance in this respect are also comparative data, which we have collected and evaluated in the context of the AVL Global Vehicle Benchmarking Program, and which contribute significantly towards the vehicle’s ‘DNA’”. Denise Gray points out another major benefit of the e-axle system for > Testing of the e-axle-system on the powertrain testbed. parts for their specific hybrid drive system from any supplier in the market. So in terms of system design and operating strategy, we are able to deliver the perfect solution that meets the customers’ requirements down to the very last detail.“ < > The advanced variant of the e-axle with two electric motors enables torque splitting.
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