Evaluation of Emissions and Heat-Release Characteristics from a Simulated Low-Heat-Rejection Diesel Engine 871616
Tests were performed on a single-cylinder direct-injection (DI) research diesel engine to investigate the influence of elevated combustion-chamber temperature on combustion performance. The test program examined the low-heat-rejection (LHR) approach by removing the coolant but without employing heat-insulated parts. Heat-release characteristics calculated from pressure-time histories were correlated with measured exhaust emissions.
It was found that increasing temperature level decreases the ignition delay and consequently decreases the fraction of total fuel that burns in the premixed-combustion phase. Exhaust hydrocarbon, NOx and particulate emission were found generally to increase with increasing temperature. The premixed-combustion fraction is concluded not to be the main source of the increased emissions.
Citation: Henningsen, S., "Evaluation of Emissions and Heat-Release Characteristics from a Simulated Low-Heat-Rejection Diesel Engine," SAE Technical Paper 871616, 1987, https://doi.org/10.4271/871616. Download Citation
Author(s):
Svend Henningsen
Pages: 19
Event:
1987 SAE International Off-Highway and Powerplant Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1987 Transactions: Reciprocating Engines--Spark Ignition and Diesel-V96-4
Related Topics:
Diesel / compression ignition engines
Combustion and combustion processes
Emissions
Hydrocarbons
Coolants
Research and development
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
