Series Hydraulic Hybrid System for a Passenger Car: Design, Integration and Packaging Study University of Michigan

Format:

Conference/Event

Author/Creator:

Woon, Woon, author.

Contributor:

Filipi, Zoran

Ivanco, Andrej

Nakra, Sidharth

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

This paper is on the development process of a hydraulic hybrid passenger vehicle. A subcompact passenger vehicle is chosen for modification into a series hydraulic hybrid with the aim of achieving a fuel economy of 100 MPG (2.35 L/100km) on the Urban Dynamometer Driving Schedule (UDDS). This work develops a methodology for simultaneously designing a powertrain and power management strategy of a series hydraulic hybrid. The design process was initiated by developing a system level model validated using engine and hydraulic pump/motor testing by the US EPA at the National Vehicle and Fuel Efficiency Laboratory (NVFEL). Parametric studies were performed in order to determine the size of the pump/motors and accumulators. Several candidate engines were tested and the system models were used to determine which one could provide the best fuel economy while meeting performance constraints. By using CAD modeling, coordinate measurement machines and rapid prototyping, packaging constraints were also considered while choosing components. A heuristic control strategy was developed, and the control parameters were optimized in order to maximize fuel economy. The hydraulic circuit was designed for implementation in the vehicle, with a structure in place for fail safe operation

Notes:

Vendor supplied data

Publisher Number:

2012-01-1031

Access Restriction:

Restricted for use by site license