Ignition Delay as Determined in a Variable-Compression Ratio Direct-Injection Diesel Engine 872036
A variable-compression ratio, direct-injection diesel engine (VCR) has been designed and assembled at Southwest Research Institute with the intention of examining the current procedures for rating the ignition quality of diesel fuels and the meaning of ignition delay as an indicator of ignition and combustion quality. Using a slightly modified ASTM D 613 procedure, the engine has been used to rate the ignition quality of 43 different test fuels. The ratings obtained in the VCR engine are compared to the corresponding rating obtained using the standard cetane rating procedure. Some of the problems associated with the standard procedure became apparent during these experiments. The experimental results are discussed in terms of the problems and the advantages of a proposed VCR-based rating procedure.
Citation: Ryan, T., "Ignition Delay as Determined in a Variable-Compression Ratio Direct-Injection Diesel Engine," SAE Technical Paper 872036, 1987, https://doi.org/10.4271/872036. Download Citation
Author(s):
Thomas W. Ryan
Affiliated:
Southwest Research Institute San Antonio, TX
Pages: 16
Event:
1987 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Diesel fuels
Cetane
Combustion and combustion processes
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »