Research & Development

In PIV-measurements (particle image velocimetry) microscopic particles are illuminated by laser light sheet during two closely timed pulses and simultaneously recorded photographically. Using two cameras the spatial components of particle motion are obtained, from which the three-dimensional velocity field in the measuring plane is determined. The velocity fields can be visualized and are well suitable for the validation of computational fluid dynamics results.

Similarly, the conventional flow characteristics (mass flow, Tippelmann swirl and tumble numbers) can be obtained from the velocity fields, allowing a quick comparison with results of the integral momentum measuring technique. In addition, other characteristics of the flow field, such as the position and orientation of the swirl and tumble axes or the omega tumble value can be determined, further contributing to the evaluation and documentation of the influences of air-conducting components.

In PIV-measurements (particle image velocimetry) microscopic particles are illuminated by laser light sheet during two closely timed pulses and simultaneously recorded photographically. Using two cameras the spatial components of particle motion are obtained, from which the three-dimensional velocity field in the measuring plane is determined. The velocity fields can be visualized and are well suitable for the validation of computational fluid dynamics results.

Similarly, the conventional flow characteristics (mass flow, Tippelmann swirl and tumble numbers) can be obtained from the velocity fields, allowing a quick comparison with results of the integral momentum measuring technique. In addition, other characteristics of the flow field, such as the position and orientation of the swirl and tumble axes or the omega tumble value can be determined, further contributing to the evaluation and documentation of the influences of air-conducting components.

Modern combustion engines must meet continuously increasing demands for efficiency and exhaust gas quality. All air-conducting components, in particular the intake and exhaust ports in the cylinder head, determine the in-cylinder flow and thus have a decisive influence on the combustion characteristic. When evaluating these influences an accurate, reproducible measurement of qualitative and quantitative flow characteristics is essential.

The method to determine Tippelmann swirl and tumble numbers is based on the integral detection of the momentum components embedded in the flow. It has been developed and patented by AVL Tippelmann and is now established at all major engine manufacturers.

AVL Tippelmann flow test benches are suitable for a wide range from motorcycle, car and truck up to big engines.

Modern combustion engines must meet continuously increasing demands for efficiency and exhaust gas quality. All air-conducting components, in particular the intake and exhaust ports in the cylinder head, determine the in-cylinder flow and thus have a decisive influence on the combustion characteristic. When evaluating these influences an accurate, reproducible measurement of qualitative and quantitative flow characteristics is essential.

The method to determine Tippelmann swirl and tumble numbers is based on the integral detection of the momentum components embedded in the flow. It has been developed and patented by AVL Tippelmann and is now established at all major engine manufacturers.

AVL Tippelmann flow test benches are suitable for a wide range from motorcycle, car and truck up to big engines.

Modern combustion engines must meet continuously increasing demands for efficiency and exhaust gas quality. All air-conducting components, in particular the intake and exhaust ports in the cylinder head, determine the in-cylinder flow and thus have a decisive influence on the combustion characteristic. When evaluating these influences an accurate, reproducible measurement of qualitative and quantitative flow characteristics is essential.

The method to determine Tippelmann swirl and tumble numbers is based on the integral detection of the momentum components embedded in the flow. It has been developed and patented by AVL Tippelmann and is now established at all major engine manufacturers.

AVL Tippelmann flow test benches are suitable for a wide range from motorcycle, car and truck up to big engines.

Modern combustion engines must meet continuously increasing demands for efficiency and exhaust gas quality. All air-conducting components, in particular the intake and exhaust ports in the cylinder head, determine the in-cylinder flow and thus have a decisive influence on the combustion characteristic. When evaluating these influences an accurate, reproducible measurement of qualitative and quantitative flow characteristics is essential.

The method to determine Tippelmann swirl and tumble numbers is based on the integral detection of the momentum components embedded in the flow. It has been developed and patented by AVL Tippelmann and is now established at all major engine manufacturers.

AVL Tippelmann flow test benches are suitable for a wide range from motorcycle, car and truck up to big engines.