New suite of drivetrain control solutions from DSD

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OEMs and suppliers now have a new tool at their disposal when developing new drivetrain architectures, courtesy of transmission and driveline specialist Drive System Design (DSD).

Infinite Control is a control system library for drivetrain control, and is intended to enable new concepts to be delivered quicker. The flexible, modular solution is suitable for conventional and xEV platforms, and features full knowledge transfer and program support services. The software packages are platform-independent.

“As powertrain architectures become increasingly complex and varied, Infinite Control enables suppliers and vehicle manufacturers to bring new concepts through development and onto the road with production-intent technology, quicker,” said Pedro Zabala, head of control systems at DSD.

“Typically, our customers find that existing production software is inflexible and slow to modify and are faced with the possibility of delaying prototype program timing. Adding complexity, despite being an initial functional concept, the business case usually requires a viable production route forward.

“Designed for production intent, the modules of Infinite Control feature a production-ready architecture compatible with functional safety standards and include advanced features such as adaptability to manufacturing tolerances, and management of complex shift strategies such as ‘change of minds’.”

DSD highlights that Infinite Control can be delivered as a bespoke white-box package, fully accessible to customers and supported by collaborative knowledge transfer to configure and operate customer systems successfully.

The modular architecture of Infinite Control means that all powertrain configurations can be catered for, whether a two-speed electric drive unit (EDU) or the most complex hybridized AT.

Range Rover updates the Evoque The Range Rover Evoque luxury compact SUV has been updated, with new architecture intended to enable a “smooth, quiet and refined” drive. Buyers will have a choice of hybrid-electric engines: a 48V mild-hybrid will be available from launch, with a plug-in hybrid version to be added about a year later. The mild-hybrid powertrain is a first for Land Rover and works by harvesting energy normally lost during deceleration thanks to the engine-mounted belt-integrated starter generator, storing it in the under-floor battery. At speeds below 11mph (17km/h), the engine will shut off while the driver applies the brakes. When pulling away, the stored energy is redeployed to assist the engine under acceleration and reduce fuel consumption. The company says the compact SUV combines all-terrain capability with all-weather assurance. The new Evoque features all-wheel drive, as well as a second-generation Active Driveline with Driveline Disconnect, designed to enhance efficiency and adaptive dynamics to deliver the optimum balance of comfort and agility. Terrain Response 2 automatically detects the surface being driven on and adjusts the set-up accordingly, while the Evoque can now wade through water up to 600mm (23.6in), rather than the previous 500mm (19.69in). The Range Rover command driving position has jumped into the digital age, with a ClearSight rearview mirror that transforms into an HD video screen. If rear visibility is compromised by passengers or bulky items, the driver can flick a switch on the underside of the mirror and a camera feed from the top of the car displays what is behind the vehicle in high definition. The screen provides a wider (50°) field of vision and better visibility in low light. The new Range Rover Evoque also features Ground View technology, which effectively makes the bonnet invisible by projecting camera imagery onto the upper touchscreen to show the driver a 180° view under the front of the vehicle. This is intended to help drivers when negotiating difficult parking spaces, high city center curbs or rough terrain. It is the realization of the Transparent Bonnet technology previewed by Land Rover in 2014. While the car’s footprint is almost unchanged, the new mixed-material Premium Transverse Architecture yields more interior space than before. “Underneath the skin is an engineering and technical revolution,” said Nick Rogers, executive director of product engineering at Jaguar Land Rover. “The architecture is all-new to accommodate both plug-in and mild-hybrid systems, with only the door hinges remaining unchanged on the body. The chassis has been significantly reworked to make the most of the stiffer body, ensuring the characteristic ride comfort and refinement of a Range Rover. “Evoque is now smarter than ever. The software that sits behind the infotainment system has been refined to provide a more intuitive customer experience. On top of that we’ve added Apple CarPlay and Android Auto for seamless smartphone integration.” Evoque is the first Land Rover with Smart Settings, which uses AI algorithms to learn the driver’s preference and acts as an “’onboard butler’. In addition to seat position, music and climate settings, the Evoque can also control steering column preferences.

The company says control systems are increasingly complex as the industry adopts electrification, as multispeed EDUs often require AMT or DCT functionality.

Additionally, by including hybrid supervisory and low-level eMotor control, Infinite Control enables all transmission types including AT and CVT to be hybridized in a P2 or P3 arrangement. The investment and knowledge gained in the development of these modules can be utilized for other applications, such as BEVs.

“The new suite of control modules allows us to support a diverse range of customers, from established OEMs through to new industry entrants, who may currently lack the necessary software and control expertise and wish to develop their in-house capability through Infinite Control and DSD’s engineering support,” said Zabala.

With much of DSD’s customer work cloaked in confidentiality, the first public exposure of Infinite Control will be highlighted at the CTI Berlin Symposium in December 2018. To showcase Infinite Control, DSD has built a functional development platform on a production Jaguar F-Pace AT vehicle, which will be available for customer demonstrations in early 2019.

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