Use Of Intrusive Turbo Wastegate Control For Improved AFIM Detection Capability

• Main Authors: MACEWEN Ian J, GARCIA Linda, MAROTTA Kenneth L, TYLUTKI Vincent J, SLADE Sean
• Format: Patent
• Language: English
• Published: 06.07.2017
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

A system includes an air/fuel imbalance (AFIM) control module that determines a position of a wastegate, selectively opens the wastegate in response to a determination that the wastegate is not in a desired open position, and selectively generates an enable signal in response to a determination that the wastegate is in the desired open position. An AFIM calculation module receives an oxygen signal from an oxygen sensor positioned in fluid communication with exhaust flow from the wastegate and selectively calculates an AFIM in a cylinder bank of an engine based on the oxygen signal and the enable signal generated by the AFIM control module.