عنوان مقاله [English]
نویسندگان [English]چکیده [English]
It is well-established that control of fuel injection which is consisted of injection configuration and injection
timing has an important role in engine performance, especially in pollutants’ formation. However, there are
a few studies about the effect of the injection configuration on the performance of a diesel engine. In the present
study, a FIRE computational fluid dynamic (CFD) code has been used in order to simulate the injection
processes as well as the combustion of a direct injection diesel engine in five different injection configurations.
The present results show that the minimum amount of NO is achieved using a triangular injection configuration
resulting a significant decrease in the engine power. Furthermore, the smoke formation decreases sensibly
using pre-injection and post –injection. The results also indicate that the minimum amount of unburned
hydrocarbons in the exhaust is achievable using post-injection in the engine.