Study of NO x Emissions Reduction Strategy for a Naturally Aspirated 4-Cylinder Direct Injection Hydrogen ICE

Paper #:
  • 2010-01-2163

Published:
  • 2010-10-25
Citation:
Naganuma, K., Takagi, Y., Kawamura, A., and Sato, Y., "Study of NOx Emissions Reduction Strategy for a Naturally Aspirated 4-Cylinder Direct Injection Hydrogen ICE," SAE Technical Paper 2010-01-2163, 2010, https://doi.org/10.4271/2010-01-2163.
Pages:
9
Abstract:
Hydrogen engines are required to provide high thermal efficiency and low nitrogen oxide (NOX) emissions. There are many possible combinations of injection timing, ignition timing, lambda and EGR rate that can be used in a direct-injection system for achieving such performance. In this study, NOX emissions of natural aspirated 4 cylinders engine with management strategies involving the injection timing, ignition timing, lambda and the EGR rate were evaluated under a Japanese JE05 emissions test cycle. Finally, the paper projects the potential of direct injection hydrogen engine for obtaining high output power and attaining low NOX emissions of 0.7 g/kWh under the emission test cycle.
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