Description

Here you will find geometrical and boundary condition data for the small-bore, swirl-supported diesel research engine. The cylinder head is from a GM 1.9L, light-duty diesel engine. Two piston geometries are available, as are valve lift curves and flow coefficients. Spray targeting is defined for two different sets of experiments.

CFD geometry files

Engine Geometry

Conventional piston bowl, flat top

Full Engine Geometry with conventional re-entrant piston (.stl file)

Full Engine Geometry with conventional re-entrant piston (STEP file)

Conventional piston bowl, with valve cutouts

Conventional bowl with valve cutouts (piston top only)

Stepped-lip piston bowl, flat top

Full Engine Geometry with stepped-lip piston (.stl file)

Full Engine Geometry with stepped-lip piston (STEP file)

Piston Bowls

Conventional and stepped-lip bowl profiles

Crank-Slider Info

Crank-Slider Info

Valve Lift and Flow

Valve lift curves

Valve flow coefficients

Spray Targeting

Spray targeting is changed based on the study. Validation data are available for two studies. These two files provide the corresponding spray targeting information:

Bowl geometry study

Pilot-main dwell study

References

Descriptions of the geometry can be found in the following sources:

Perini, K. Zha, S. Busch, E. Kurtz, R. Peterson, A. Warey, R.D. Reitz, “Piston geometry effects in a light-duty, swirl-supported diesel engine: flow structure characterization”, Int J Engine Res, under review, 2016;

Perini, P.C. Miles, R.D. Reitz, “A comprehensive modeling study of in-cylinder fluid flows in a high-swirl, light-duty optical diesel engine”, Computers & Fluids 2014(105):113-124, doi:10.1016/j.compfluid.2014.09.011.

Perini, K. Zha, S. Busch, P.C. Miles, R.D. Reitz, “Principal Component Analysis and study of port-induced swirl structures in a light-duty optical diesel engine”, SAE Technical Paper 2015-01-1696, SAE 2015 World Congress and Exhibition, Detroit, MI, Apr 21-23, 2015.