Browse Publications Technical Papers 2016-01-1171
2016-04-05

Development of Hybrid Powertrain System for Small Vehicles 2016-01-1171

Electrification of the powertrain to improve vehicle fuel economy is a key technology to achieve strict fuel economy legislation. However, only limited numbers of small class vehicles such as a B segment adopt electric powertrain. This is presumed that cost effectiveness for fuel economy is small and mounting space for additional powertrain is limited. In this paper, the optimum solution of a strong hybrid system suitable for the small vehicles was studied.
First, from the viewpoint of maximization of energy efficiency, we compared contributions of engine efficiency and transmission efficiency during mode cycle driving and selected automated manual transmission as a suitable transmission for small vehicles. In comparing the hybrid system function, we determined a motor generator connecting shaft and a necessary motor generator output power for attaining both fuel economy and drivability. Further, motor generator and gear arrangement were designed to realize the shift change without torque interruption and shorter axle length than conventional manual transmission.
The functional prototype of an automated manual transmission hybrid system and a test vehicle were built. Furthermore, we introduce vehicle evaluation result of the shift change sequence without torque interruption and the possibility of flexible drivability.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Direct Measurement of Powertrain Component Efficiencies for a Light-Duty Vehicle with a CVT Operating Over a Driving Cycle

2003-01-3202

View Details

TECHNICAL PAPER

Improved Fuel Efficiency and Vehicle Performance in MD and HD Commercial Vehicles in India with DCT

2013-01-2817

View Details

JOURNAL ARTICLE

Definition of Gearshift Pattern: Innovative Optimization Procedures Using System Simulation

2011-01-0395

View Details

X