An increasing attention is paid by the global society to the issue of environmental protection.
Additionally, by the year 2030, CO2 emissions in the EU are to be reduced by almost one third in comparison with 2019.
Vehicles play an important role in day-to-day social development, how to control the CO2 emissions therefore is a necessary topic. Thus, an increasing method are developed to reduce the turbocharger CO2 emissions. All concepts have one aim in common: to achieve highly efficient supercharging in the consumption relevant operating ranges of the engine at the same time as sufficient flexibility to achieve the peak load operation points and partial load operation points in a reliable way.
Hybrid concepts require maximum-efficiency combustion engines if they are to achieve the desired CO2 values. Full Electric Vehicles (EV) are growing quickly on a percentile basis but require significant monetary and other incentives such as superior city access.
The more stringent CO2 targets, the rising proportion of heavy vehicles in the SUV segment and the further decline of diesel engines make alternative propulsion concepts based on combustion engines necessary in addition to electrification.
The main pillars of future developments in gasoline engines are an increased geometric compression ratio, charge dilution, the Miller cycle, and various combinations of these factors, with the aim of bringing the efficiency of the gasoline engine process close to that of the diesel engine. Electrifying a turbocharger removes the constraint of needing a small turbine with excellent efficiency to drive its second turbocharged age.
Reference
Eichler, F.; Demmelbauer-Ebner, W.; Theobald, J.; Stiebels, B.; Hoffmeyer, H.; Kreft, M.: The New EA211 TSI evo from Volkswagen. 37th International Vienna Motor Symposium, Vienna, 2016
Dornoff, J.; Rodríguez, F.: Gasoline versus diesel, comparing CO2 emission levels of a mod[1]ern medium size car model under laboratory and on-road testing conditions. Online: https://theicct.org/sites/default/fles/publications/Gas_v_Diesel_CO2_emissions_FV_20190503_1.pdf, access: July 16, 2019
Post time: Feb-26-2022