The objective of this paper is to analyse the flow characteristics inside the cylinder of a DI Diesel engine at variable swirl number. Initially, the cylinder head is characterised by means of three-dimensional calculations of the steady flow through the intake ports. These calculations have been made for several positions of the throttles, from wide open, to closed, using the STAR-CD commercial CFD code. They have been validated with steady flow experimental data measured with torque-meter. Next, 3D calculations of the compression stroke are presented and compared with experimental measurements. The initial conditions inside the cylinder in the TDC have been estimated using the head characterisation tests and a zero-dimensional model. The results obtained are in good agreement with the experiments.
THREE DIMENSIONAL CALCULATION OF THE FLOW IN A DI DIESEL ENGINE WITH VARIABLE SWIRL INTAKE PORTS
Sae Technical Papers
Automotive and Transportation Technology Congress and Exposition ; 2001
2001-10-01
Aufsatz (Konferenz)
Englisch
Three dimensional calculation of the flow on a DI diesel engine with variable swirl intake ports
Kraftfahrwesen | 2001
|British Library Conference Proceedings | 2001
|Three-valves-per-cylinder engine employs high swirl tapered intake ports
Kraftfahrwesen | 1988
|Research on a variable swirl intake port for high speed 4-valve DI diesel engine
Kraftfahrwesen | 1999
|Intake Ports Development: Euro IV Diesel Engine Cylinder Head
British Library Conference Proceedings | 2008
|