TCC Engine Details

Engine Geometry

The spark-ignition engine, set up at the University of Michigan, features a two-valve head with simple intake and exhaust port/runner geometries and a pancake-shape combustion chamber. The over-all optical access is maximized to allow acquisition of three-dimensional in-cylinder flow fields and the investigation of near-wall, boundary layer flows. The base geometry and the cylinder head/piston assembly of this engine were taken from a previous system, designed and built by Reuss et al. with a geometry that has been demonstrated to allow robust multi-cycle LES computations.

Figure 1: The two-valve engine features full thermodynamic instrumentation 
and provides optical access to the entire in-cylinder volume.

Intake and exhaust systems include large buffer tanks and short runners to minimize pressure waves (see Figure 1). The system is instrumented to meet the needs of both 1-D flow modeling and CFD. Fast pressure transducers are utilized to measure time-resolved pressure histories along with thermocouple measurements of temperatures at several locations. Intake mass flow rates are controlled by a critical orifice system and, when in use, additional airflow is metered through the oil droplet seeder system that is required for particle image velocimetry (PIV).

Figure 2: Geometry used for CFD. 

DOWNLOAD DATA for free use

A zip archive is available here for download and includes the following contents for the TCC-III geometry. A version history of the TCC engine configuration is provided below (to be added).
  • Geometry file in .stl and igs. format
  • Valve lift curves
  • GT Power models and sample results (extensively tested and validated against a wide range of operating conditions.)
It is requested that any published use of the TCC-III engine simulation geometry and/or data be acknowledged with the following statement:  
“The TCC engine work has been funded by General Motors through the General Motors University of Michigan Automotive Cooperative Research Laboratory, Engine Systems Division. The data have been obtained from”

Motored high-speed PIV data from the TCC-III engine are available in four .tar archives for download and the use of this data should reference:
"LES of IC engine flows for different engine speeds and intake manifold pressures"
P. Schiffmann1, S. Gupta1,2, D. Reuss1, V. Sick1, X. Yang2, T-W. Kuo2 (1 Univ. of Michigan, 2 GM Global R&D, USA), Oil & Gas Science and Technology, 71 (1), 3, 2016.

Xiaofeng Yang
and Tang-Wei Kuo (GM), Volker Sick and David Reuss (UM).