Energy Management for RCCI Engines with Electrically-Assisted Turbocharging. Issue 24 (2022)

• Record Type: Journal Article
• Authors: van Zuijlen, Roy; Kupper, Frank; Willems, Frank
• Is Part Of: IFAC-PapersOnLine. Volume 55:Issue 24(2022)
• Page Start: 354
• Page End: 359
• Publication Date: 2022
• Subjects: Engine modelling -- engine control -- energy management systems -- energy control -- dynamic decoupling -- hybrid vehicles -- optimal control; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2022.10.309
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: In this paper, Reactivity Controlled Compression Ignition (RCCI) with an electrically-assisted turbocharger (E-turbo) is investigated. This is a promising concept for future green transport, since it can realize very high thermal efficiencies for a wide range of renewable fuels. The combination of RCCI with an E-turbo requires a new approach to manage the energy flows of the engine due to constraints on the storage of electrical energy. The E-turbo shows most potential to increase the engine's thermal efficiency by improved tracking performance of the desired intake conditions. To exploit the full potential of the E-turbo during transients, a dynamic decoupling feedback controller is designed. A supervisory controller based on Pontryagin's Minimum Principle is composed to maximize the brake thermal efficiency while the battery of the E-turbo remains charge sustaining. The supervisory controller determines setpoints for the feedback controller and ensures therefore optimal engine operation during transients. For the simulated, real-world based transient-cycle, fuel savings of 0.64 [%] are realized by the developed supervisory control, while remaining charge sustaining.