xcel
03-12-2009, 06:03 PM
http://www.cleanmpg.com/photos/data/2/European_Union_Flag.jpg Now if we can only figure out where the H2 will come from? (cleanmpg.com/forums/showthread.php?p=193885)
http://www.cleanmpg.com/photos/data/501/2009_BMW_335d_Front_End.jpgWayne Gerdes – CleanMPG (cleanmpg.com) – Mar. 12, 2009
BMW’s all-new H2-ICE combustion process may give the gasoline, diesel and future fuel cell powered vehicles a run for their money once it is discovered how H2 can be created and stored more efficiently than today.
Specialists from BMW co-developed a hydrogen combustion process which achieves outstanding thermal efficiency for an internal combustion engine.
Munich, Germany -- The BMW Group in cooperation with researchers in Graz and Vienna, Austria, have succeeded in developing a hydrogen fueled combustion engine with diesel-like geometry and progressive H2 high-pressure direct injection technology. The result is a thermal efficiency up to 42 percent, on par with that of the best turbodiesel engines. Partners in the “H2BVplus” project sponsored by Austria’s Federal Ministry for Transportation, Innovation and Technology (BMVIT), included the Institute for Internal Combustion Engines and Thermodynamics at Graz University of Technology, HyCentA Research GmbH in Graz, as well as Hoerbiger ValveTec GmbH in Vienna.
“In light of the limited availability of fossil fuels and the rising environmental impact from harmful emissions, we are convinced that the H2 combustion engine will assume an important position in the product portfolio of future alternative drive concepts. It will crucially contribute to safeguarding our individual mobility at the high level the customer expects,” said Professor Dr. Raymond Freymann, Managing Director of BMW Forschung und Technik GmbH.
The newly developed combustion system combines the strengths of spark-ignition (SI-) and diesel compression-ignition (CI-) concepts, while utilizing the favorable lean combustion properties of hydrogen to achieve efficiency values that easily compare with those of state-of-the-art turbodiesel engines. In the process, the engineers based their work on the joint EU “HylCE” project, during which maximum specific powers of up to 100 kilowatt per liter of displacement were demonstrated for a spark-ignition hydrogen combustion process’.
Engineers from the BMW Group Forschung und Technik developed a new cylinder head for hydrogen operation based on a production diesel engine. The combustion chamber of the engine was configured jointly by BMW and the Graz University of Technology using numerical flow simulation. Hoerbiger ValveTec GmbH designed high-pressure injectors for direct injection of hydrogen into the combustion chamber with pressures of up to 300 bar (nearly 4500 psi). These injectors were tested and calibrated at the Hydrogen Center Austria, which also provided the hydrogen infrastructure. Extensive test runs on the test benches of the Institute for Internal Combustion Engines and Thermodynamics of the Graz University of Technology have shown that a combination of spark-ignition and diesel combustion systems (multi-combustion events) using surface ignition followed by a diffusion type of combustion is the ideal solution with respect to engine efficiency. As a result, the characteristic engine mapping of a typical passenger car engine can be covered and top level efficiency values achieved. Benefits include an increase in specific power and more importantly, an increase in fuel economy.
Even though the engine is in an early concept phase, this combustion solution matches the efficiency values of the best currently available turbodiesel engines at a maximum of 42-percent thermal efficiency. An exhaust gas recovery system can be used in the future to further increase overall efficiency.
BMW Forschung und Technik GmbH is a 100% subsidiary of BMW AG and has been responsible for research within the BMW Group since 2003. Its subject areas cover Vehicle Technology, CleanEnergy (hydrogen technology), EfficientDynamics (intelligent energy management/alternative drive systems), ConnectedDrive (driver assistance/active safety) and ITDrive (IT and communications technology). Its legal independence as a limited company guarantees creative freedom and maximum flexibility. Global access to new trends and technologies is ensured by an internationally established network with branches in the USA (Palo Alto, CA and Clemson, SC), Japan (Tokyo) as well as liaison offices in France with Eurécom (Sophia Antipolis) and in Germany (Saarbrücken) with the German Research Centre for Artificial Intelligence (DFKI GmbH).
HOERBIGER ValveTec GmbH is a company of the HOERBIGER Group. HOERBIGER is active throughout the world as a leading player in the fields of compression technology, automation technology and drive technology. The focal points of its business activities include key components and services for compressors, gas-powered engines, and turbomachinery, hydraulic systems and piezo technology for vehicles and machine tools, as well as components and systems for shift and clutch operations in vehicle drive trains of all kinds.
The core objective of the Institute for Internal Combustion Engines and Thermodynamics at the Graz University of Technology is to carry out innovative and internationally recognized teaching and research within the interrelated fields of energy, engine, transport and environment, and in particular to contribute to solving environmental problems.
http://www.cleanmpg.com/photos/data/501/2009_BMW_335d_Front_End.jpgWayne Gerdes – CleanMPG (cleanmpg.com) – Mar. 12, 2009
BMW’s all-new H2-ICE combustion process may give the gasoline, diesel and future fuel cell powered vehicles a run for their money once it is discovered how H2 can be created and stored more efficiently than today.
Specialists from BMW co-developed a hydrogen combustion process which achieves outstanding thermal efficiency for an internal combustion engine.
Munich, Germany -- The BMW Group in cooperation with researchers in Graz and Vienna, Austria, have succeeded in developing a hydrogen fueled combustion engine with diesel-like geometry and progressive H2 high-pressure direct injection technology. The result is a thermal efficiency up to 42 percent, on par with that of the best turbodiesel engines. Partners in the “H2BVplus” project sponsored by Austria’s Federal Ministry for Transportation, Innovation and Technology (BMVIT), included the Institute for Internal Combustion Engines and Thermodynamics at Graz University of Technology, HyCentA Research GmbH in Graz, as well as Hoerbiger ValveTec GmbH in Vienna.
“In light of the limited availability of fossil fuels and the rising environmental impact from harmful emissions, we are convinced that the H2 combustion engine will assume an important position in the product portfolio of future alternative drive concepts. It will crucially contribute to safeguarding our individual mobility at the high level the customer expects,” said Professor Dr. Raymond Freymann, Managing Director of BMW Forschung und Technik GmbH.
The newly developed combustion system combines the strengths of spark-ignition (SI-) and diesel compression-ignition (CI-) concepts, while utilizing the favorable lean combustion properties of hydrogen to achieve efficiency values that easily compare with those of state-of-the-art turbodiesel engines. In the process, the engineers based their work on the joint EU “HylCE” project, during which maximum specific powers of up to 100 kilowatt per liter of displacement were demonstrated for a spark-ignition hydrogen combustion process’.
Engineers from the BMW Group Forschung und Technik developed a new cylinder head for hydrogen operation based on a production diesel engine. The combustion chamber of the engine was configured jointly by BMW and the Graz University of Technology using numerical flow simulation. Hoerbiger ValveTec GmbH designed high-pressure injectors for direct injection of hydrogen into the combustion chamber with pressures of up to 300 bar (nearly 4500 psi). These injectors were tested and calibrated at the Hydrogen Center Austria, which also provided the hydrogen infrastructure. Extensive test runs on the test benches of the Institute for Internal Combustion Engines and Thermodynamics of the Graz University of Technology have shown that a combination of spark-ignition and diesel combustion systems (multi-combustion events) using surface ignition followed by a diffusion type of combustion is the ideal solution with respect to engine efficiency. As a result, the characteristic engine mapping of a typical passenger car engine can be covered and top level efficiency values achieved. Benefits include an increase in specific power and more importantly, an increase in fuel economy.
Even though the engine is in an early concept phase, this combustion solution matches the efficiency values of the best currently available turbodiesel engines at a maximum of 42-percent thermal efficiency. An exhaust gas recovery system can be used in the future to further increase overall efficiency.
BMW Forschung und Technik GmbH is a 100% subsidiary of BMW AG and has been responsible for research within the BMW Group since 2003. Its subject areas cover Vehicle Technology, CleanEnergy (hydrogen technology), EfficientDynamics (intelligent energy management/alternative drive systems), ConnectedDrive (driver assistance/active safety) and ITDrive (IT and communications technology). Its legal independence as a limited company guarantees creative freedom and maximum flexibility. Global access to new trends and technologies is ensured by an internationally established network with branches in the USA (Palo Alto, CA and Clemson, SC), Japan (Tokyo) as well as liaison offices in France with Eurécom (Sophia Antipolis) and in Germany (Saarbrücken) with the German Research Centre for Artificial Intelligence (DFKI GmbH).
HOERBIGER ValveTec GmbH is a company of the HOERBIGER Group. HOERBIGER is active throughout the world as a leading player in the fields of compression technology, automation technology and drive technology. The focal points of its business activities include key components and services for compressors, gas-powered engines, and turbomachinery, hydraulic systems and piezo technology for vehicles and machine tools, as well as components and systems for shift and clutch operations in vehicle drive trains of all kinds.
The core objective of the Institute for Internal Combustion Engines and Thermodynamics at the Graz University of Technology is to carry out innovative and internationally recognized teaching and research within the interrelated fields of energy, engine, transport and environment, and in particular to contribute to solving environmental problems.