Browse Publications Technical Papers 2009-01-1330
2009-04-20

Development of a BISG Micro-Hybrid System 2009-01-1330

Hybrid electric powertrain can be a promising and cost-effective technology to meet forthcoming emissions regulations. However, the hybridization of a conventional powertrain remains a complex task. According to their functions, hybrid powertrains can be classified into full-hybrid, mild-hybrid and micro-hybrid, of which micro-hybrid system is regarded as the most cost-effective solution for current regulations. Although a micro-hybrid system employs relatively simple new functions, such as stop/start and regenerative braking, to achieve the target fuel economy with reasonable cost, the engineer must consider many practical aspects in order to deliver a solution which is robust, effective and easy to understand for customers. In this paper the development of a belt-driven integrated starter generator (BISG) micro-hybrid system for a light-duty commercial vehicle application is presented. The system consists of a BISG machine, a power inverter, a DC/DC converter, an ultracapacitor package and an improved 12V lead-acid battery with battery monitoring system. The control system is implemented in a highly integrated vehicle control network via both CAN and LIN communications. Several practical aspects, such as system robustness, functional safety and control software development are discussed.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X