Quantitative Time Resolved 2-D Fuel-Air Ratio Measurements in a Hydrogen Direct Injection SI Engine Using Spontaneous Raman Scattering

961101

05/01/1996

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
A two-dimensional technique for the quantitative determination of the fuel-air ratio in hydrogen fuelled engines has been developed. The technique is based on the spontaneous Raman scattering of the hydrogen molecules (Stokes Q-branch) and the simultaneous measurement of the pressure inside the combustion chamber. From these data the local partial pressure of the hydrogen and, therefore, the fuel-air ratio can be calculated.
This method was applied in a single cylinder direct injection research engine in order to prove the applicability of this technique under real engine conditions. The measurements inside the side chamber of the engine show a fast mixing process of the compressed air and the injected hydrogen (6 MPa injection pressure) independent of the injection timing.
Meta TagsDetails
DOI
https://doi.org/10.4271/961101
Pages
11
Citation
Meier, F., Wiltafsky, G., Köhler, J., and Stolz, W., "Quantitative Time Resolved 2-D Fuel-Air Ratio Measurements in a Hydrogen Direct Injection SI Engine Using Spontaneous Raman Scattering," SAE Technical Paper 961101, 1996, https://doi.org/10.4271/961101.
Additional Details
Publisher
Published
May 1, 1996
Product Code
961101
Content Type
Technical Paper
Language
English