Conceptualization and Implementation of an AWD Parallel Hybrid Powertrain Concept 2013-01-1448

The Deep Orange [1] initiative is an integral part of the automotive graduate program at Clemson University International Center for Automotive Research. The initiative was developed to provide the graduate students with hands-on experience of the knowledge attained in the various engineering disciplines and related disciplines (such as marketing and human factors psychology). For the 3^rd edition of Deep Orange, the goal was to develop a blank sheet hybrid mainstream sports car concept targeted towards the Generation Y (Gen Y) market segment.

The objective of this paper is to elaborate on the overall development process and the technology that was created and integrated. A unique all-wheel-drive (AWD) parallel hybrid concept was derived based on extensive analyses of the Gen Y market. The data revealed that Gen Y, as an environmentally conscious generation, is willing to invest in sustainable powertrain technologies and also has a significant interest in all-wheel-drive. Based on these findings, a through-the-road parallel hybrid powertrain concept with a manual transmission was conceptualized.

The powertrain architecture comprises of a Front-Wheel-Drive (FWD) concept using a downsized turbocharged 4-cylinder Internal Combustion Engine (ICE) and a Rear-Wheel-Drive (RWD) concept using an electric machine. This configuration allows for regenerative braking, all-wheel-drive and power boost functionality. In the early development phase of the project, simulation models were developed for sizing the powertrain components using model-based design tools in order to achieve functional targets while carefully balancing cost, weight and design-space. This paper will elaborate on how the unique hybrid powertrain setup was developed based on a holistic systems engineering approach incorporating competing aspects such as performance, fuel economy, exterior/interior design and powertrain component packaging.