Tuesday, April 1, 2008 - 11:25 AM
One for All, and All for One? – Automotive Hydrogen Storage Portfolio and Best-fit Application
Tobias Brunner and Dr. Oliver Kircher. BMW Group
The BMW CleanEnergy project has set a focus on hydrogen-based propulsion systems using its well-proven internal combustion engine (ICE) and a liquid hydrogen storage system, giving the customer BMW-typical driving experience at almost zero emission with a minimized penalty on vehicle range and onboard energy availability.
With the recent launch of the Hydrogen 7, the world’s first small series hydrogen-powered premium sedan, BMW has entered into a new phase of pre-commercialization of hydrogen vehicles. Based on the experience acquired during the serial development and production process of the Hydrogen 7, BMW has revealed the main challenges for mass production of cryogenic hydrogen vehicle storage. Targets and requirements for a future technological and commercial success of hydrogen vehicle storage have been clarified and confirmed. Frequency and intensity of vehicle usage have been identified as important for a realistic assessment of hydrogen storage performance. Therefore, BMW has performed a thorough analysis of vehicle use profiles and storage constraints and has derived a map of application for the currently available physical hydrogen storage types that allows for identification of the best hydrogen storage type for a given vehicle class and drive train application. Due to its promising potential to overcome the issue of thermal performance of liquid hydrogen storage in smaller vehicles while retaining a high system energy density, cryo-compressed hydrogen storage (CcH2) has been added as new option to the automotive hydrogen storage portfolio and is currently developed and tested by the BMW Group.
The presentation will summarize BMW’s progress and remaining technical and commercial challenges with liquid hydrogen storage as used in the recently launched Hydrogen 7. It will draw conclusions for vehicle compliance of the different available automotive hydrogen storage types and clarify vehicle constraints for hydrogen onboard storage. BMW’s new cryo-compressed hydrogen vehicle storage approach will be outlined and its potential and challenges be disclosed. The value of several hydrogen storage types with selection of the best-fit solution for different vehicle applications will be highlighted. The inter-dependency of different physical hydrogen storage types and their implication on a future hydrogen infrastructure will be outlined.
With the recent launch of the Hydrogen 7, the world’s first small series hydrogen-powered premium sedan, BMW has entered into a new phase of pre-commercialization of hydrogen vehicles. Based on the experience acquired during the serial development and production process of the Hydrogen 7, BMW has revealed the main challenges for mass production of cryogenic hydrogen vehicle storage. Targets and requirements for a future technological and commercial success of hydrogen vehicle storage have been clarified and confirmed. Frequency and intensity of vehicle usage have been identified as important for a realistic assessment of hydrogen storage performance. Therefore, BMW has performed a thorough analysis of vehicle use profiles and storage constraints and has derived a map of application for the currently available physical hydrogen storage types that allows for identification of the best hydrogen storage type for a given vehicle class and drive train application. Due to its promising potential to overcome the issue of thermal performance of liquid hydrogen storage in smaller vehicles while retaining a high system energy density, cryo-compressed hydrogen storage (CcH2) has been added as new option to the automotive hydrogen storage portfolio and is currently developed and tested by the BMW Group.
The presentation will summarize BMW’s progress and remaining technical and commercial challenges with liquid hydrogen storage as used in the recently launched Hydrogen 7. It will draw conclusions for vehicle compliance of the different available automotive hydrogen storage types and clarify vehicle constraints for hydrogen onboard storage. BMW’s new cryo-compressed hydrogen vehicle storage approach will be outlined and its potential and challenges be disclosed. The value of several hydrogen storage types with selection of the best-fit solution for different vehicle applications will be highlighted. The inter-dependency of different physical hydrogen storage types and their implication on a future hydrogen infrastructure will be outlined.