Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine

1999-01-3649

10/25/1999

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
Basic optical properties have been investigated in order to characterize the HCCI-combustion process. Basic optical properties of a Homogeneous Charge Compression Ignition (HCCI) engine have been investigated in order to characterize the combustion process.
The absorption of light propagating through the combustion chamber has been spectrally resolved for four different fuels. Significant differences between the fuels could be detected. Complementary information could be obtained by recording spontaneous emission of radiation during combustion.
Raman point measurements were used to quantify cycle-to-cycle variations of the equivalence ratio. The homogeneity of the charge was monitored by the use of two-dimensional tracer LIF. That method was also utilized to investigate the flame development.
The experiments were performed in a six-cylinder, truck-sized engine with one cylinder modified to allow for optical access. The results obtained are believed to be valuable in future applications of optical diagnostics in similar environments.
Meta TagsDetails
DOI
https://doi.org/10.4271/1999-01-3649
Pages
10
Citation
Richter, M., Franke, A., Aldén, M., Hultqvist, A. et al., "Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine," SAE Technical Paper 1999-01-3649, 1999, https://doi.org/10.4271/1999-01-3649.
Additional Details
Publisher
Published
Oct 25, 1999
Product Code
1999-01-3649
Content Type
Technical Paper
Language
English