Development of a direct-injection diesel engine with mixture formation by fuel spray impingement

2000-05-0102

06/12/2000

Authors Abstract
Content
The mixture formation by fuel spray impingement (OSKA system) was applied to a small direct-injection diesel engine in order to reduce the wall quenching- induced emissions, i.e., the emissions of THC and soluble organic fractions (SOF).
Experiments were carried out using a single-cylinder engine, fitted with various piston cavity geometries, ran under a wide range of compression ratios and fuel injection specifications. The piston cavity was designed as a centrally located reentrant type. The combination of the high squish flow and the weak penetration of the OSKA spray was very effective in reducing harmful emissions. A short ignition delay, under the retarded fuel injection timing, was obtained because of the high compression ratio. The OSKA DI diesel engine showed reduced NOx, smoke, and THC emissions without deterioration of the fuel consumption compared to modern DI diesel engines used in automotive applications. While PM emissions were partially reduced, simultaneous reduction of NOx and PM was not obtained.
Meta TagsDetails
Pages
7
Citation
Kato, S., Tanabe, H., Sato, T., and Fujita, K., "Development of a direct-injection diesel engine with mixture formation by fuel spray impingement," SAE Technical Paper 2000-05-0102, 2000, .
Additional Details
Publisher
Published
Jun 12, 2000
Product Code
2000-05-0102
Content Type
Technical Paper
Language
English