US 12,281,609 B2
Turbocharged engine system and method of charging and emission controlling a turbocharged engine system
Jean-Francois Tissot, Bergheim (FR); and Cyril Bessonnard, Zürich (CH)
Assigned to Accelleron Switzerland Ltd., Baden (CH)
Appl. No. 18/710,572
Filed by Accelleron Switzerland Ltd., Baden (CH)
PCT Filed Nov. 10, 2022, PCT No. PCT/EP2022/081504
§ 371(c)(1), (2) Date May 15, 2024,
PCT Pub. No. WO2023/088784, PCT Pub. Date May 25, 2023.
Claims priority of application No. 21209307 (EP), filed on Nov. 19, 2021.
Prior Publication US 2025/0035032 A1, Jan. 30, 2025
Int. Cl. F02B 37/12 (2006.01); F02B 37/10 (2006.01); F02B 39/10 (2006.01)
CPC F02B 37/12 (2013.01) [F02B 37/10 (2013.01); F02B 39/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A turbocharged engine system, comprising:
a combustion engine having at least one cylinder;
at least one inlet valve configured to supply the at least one cylinder with intake air or air-fuel-mixture, the at least one inlet valve being configured to provide a constant cyclical valve timing between an open state and a closed state of the at least one inlet valve, the constant cyclical valve timing being a Miller timing or Atkinson timing;
at least one outlet valve configured to discharge exhaust from the at least one cylinder;
at least one turbocharger having a turbine and a compressor for pressurizing the intake air or air-fuel-mixture;
at least one electrical power converter coupled with at least one of the compressor and the turbine; and
a control device configured for controlling the at least one electrical power converter to provide power to or to take off power from at least one of the compressor and the turbine to achieve a targeted value of at least one operational parameter of the combustion engine, wherein the turbine has an effective section Sres,T being sized such that a generated power by the turbine provides at least a power required by the compressor to reach the targeted value of the at least one operational parameter without using the at least one electrical power converter as a motor during non-acceleration operation of the combustion engine.