| 摘要 |
Embodiments of the present invention relate to air-handling for engine systems that include an asymmetrical turbocharger. Further, embodiments of the present invention utilize the control of components of an exhaust system, such as, for example, a waste gate, exhaust throttle, and/or EGR control valve to control the characteristics of a charged flow and/or for thermal management of an exhaust gas. Certain embodiments can utilize operation of the EGR valve and/or waste gate to attain a target EGR flow and/or target EGR fraction for the charged flow. Further, the EGR valve and/or the waste gate may be utilized attain, but not exceed, peak cylinder pressures. Further, the EGR valve and/or exhaust throttle may be operated to reduce temperatures of exhaust gases in the exhaust gas manifold to temperatures that do not exceed inlet exhaust gas temperature limits for one or more turbines of the turbocharger. |
