Effect of New Cooling System in a Diesel Engine on Engine Performance and Emission Characteristics

Event
SAE World Congress & Exhibition
Authors Abstract
Content
Automotive manufacturers and engineers have paid attention to promoting engine performance with low emissions satisfying many emission regulations. With such goals in mind, we have investigated new cooling strategies such as high coolant temperature control, fast warm-up and post cooling using an automotive cooling system controlled by electronic actuators. The cooling system in a 2.7 liter HSDI engine was modified for the purpose of this study, and an engine experiment was carried out on a New European Drive Cycle (NEDC). The conventional water pump was decoupled from the engine and electronically controlled by a BLDC motor. Valves were installed at the coolant pathways between the engine and cooling components. Overall, this modification led to a reduction in both fuel consumption and exhaust gas emissions (e.g. THC, CO). The reduction was particularly considerable at the low speed and low load-drive conditions by controlling high temperature of the coolant. In addition, independent operation of the water pump along with the coolant flow control using valves reduced warm-up time during cold start which contributed to a decrease in harmful emissions and fuel consumption.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-0177
Pages
6
Citation
Choi, K., Kim, K., and Lee, K., "Effect of New Cooling System in a Diesel Engine on Engine Performance and Emission Characteristics," SAE Int. J. Engines 2(1):77-82, 2009, https://doi.org/10.4271/2009-01-0177.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0177
Content Type
Journal Article
Language
English