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Simulation Methodology for Hydrogen Concentration and Dilution Strategy in a Hydrogen Fueled Internal Combustion Engine Cummins Technologies India Pvt. Limited
- Format:
- Book
- Conference/Event
- Author/Creator:
- Sahu, Abhay Kumar, author.
- Conference Name:
- 11th SAEINDIA International Mobility Conference (SIIMC 2024) (2024-12-11 : New Delhi, India)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2024
- Summary:
- Manufacturers of internal combustion engines are changing their focus to non-conventional fuels like hydrogen in response to the worrying global warming situation. When compared to conventional fuels like gasoline or diesel, the use of gaseous hydrogen fuel in an internal combustion engine powered by hydrogen can lessen the engine's negative environmental effects. But occasionally, hydrogen can leak from the high-pressure fuel injection system to the engine top cover and as blowby within the crankcase. Static zones may emerge because of these H2 leaks. Potential explosion or fire can result when the H2 concentration in these stagnation zones is more than 4% and triggers a minimum ignition energy of 0.02 mJ.A CFD simulation methodology incorporating multi-species model, piston, and crank motion to estimate the H2 concentration within crankcase is developed. The simulation development phases has been presented in the paper. The blowby values are determined from the experimental measurement and used as the inputs. The dilution strategy by varying the number of vent ports, location, size for crankcase is examined using this simulation. The flow requirements at various speed also deduced. Further, for under hood and engine top cover, underhood analysis is carried out to ascertain the accumulation within the engine and its compartment. Fan ON and OFF scenario is studied, and results are discussed.H2ICE blowby and H2 % concentration at breather tube out is correlated with test for a baseline case. A good correlation matching the experimental trend is observed in the simulation.The study helped engine program to complete the optimization and design verification through simulation and get the best concept implemented
- Notes:
- Vendor supplied data
- Publisher Number:
- 2024-28-0220
- Access Restriction:
- Restricted for use by site license
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