Variable Turbine Geometry for Gasoline Engines in the Volume Segment
The reduction in fuel consumption through new combustion processes is also set to be a major pillar of efforts to increase the efficiency of gasoline engine powertrains in future. This comes alongside growing demands imposed on the charging system, which - particularly in the volume segment - need to be met amid growing cost pressures. Single-stage exhaust turbocharging with variable turbine geometry represents a promising technology to meet this challenge, as the following analysis from Opel shows.
Boundary Conditions for Future Engine Concepts
Lowering CO2 emissions as the core development goal of car makers also calls for further improved fuel economy, particularly in the area of gasoline engines. This primarily affects the volume segment, which is why the development here centers on demonstrating low fuel consumption through the use of cost-efficient technologies.
The authors would like to thank all their colleagues who collaborated with and supported the preparation of the findings presented here.