The variety of transmissions available for sale today has grown exponentially in the last 15 years, all while increasing in complexity. The effect is definitely that we are now coping with a varied amount of transmitting types including manual, regular automatic, automatic manual, dual clutch, Driveline gearboxes consistently variable, split power and 100 % pure EV.
Until very recently, automotive vehicle producers largely had two types of transmission to pick from: planetary automatic with torque converter or conventional manual. Today, however, the volume of choices available demonstrates the adjustments seen across the industry.
That is also illustrated by the many different types of vehicles now being produced for the market. And not merely conventional automobiles, but also all electrical and hybrid automobiles, with each type requiring different driveline architectures.
The traditional development process involved designing a transmission in isolation from the engine and the rest of the powertrain and vehicle. Nevertheless, this is changing, with the limitations and complications of this method becoming more widely recognized, and the constant drive among producers and designers to deliver optimal efficiency at reduced weight and cost.
New powertrains feature close integration of elements like the primary mover, recovery systems and the gearbox, and also rely on highly advanced control systems. That is to make sure that the best degree of efficiency and efficiency is delivered all the time. Manufacturers are under improved pressure to create powertrains that are completely new, different from and much better than the last version-a proposition that’s made more technical by the need to integrate brand components, differentiate within the market and do it all on a shorter timescale. Engineering teams are on deadline, and the advancement process must be better and fast-paced than previously.
Until now, the usage of computer-aided engineering (CAE) has been the most common way to develop drivelines. This process involves parts and subsystems designed in isolation by silos within the business that lean toward proven component-level analysis equipment. While they are highly advanced equipment that enable users to extract extremely dependable and accurate data, they remain presenting data that is collected without factor of the whole system.
While this may produce components that all work nicely individually, putting them jointly without prior thought of the entire program can create designs that don’t work, leading to issues in the driveline that are difficult and expensive to improve.