Abstract
Keywords:
Diesel engines, Diesel injection, injection rate-shaping, emissions, fuel consumption, combustion noise
Abstract:
Nowadays in the race of Diesel engine emission reduction, many efforts are carried out on the improvement of Diesel injection system performance. This paper focuses on the injection rate shaping effects on Diesel combustion, emissions, fuel consumption and generated noise. The R&D Twin Common Rail (TwinCR) system is used on a single cylinder engine in order to explore the effects of injection rate shaping on combustion, emissions, fuel consumption and generated noise on a mid-load operating point. Moreover a 3D CFD code is validated on these investigated injection strategies. The combination of experimental observations and 3D outputs is exploited to explain the behaviour of the in-cylinder combustion processes.