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1. (WO2013163089) CONTROL SYSTEM FOR A MODEL-BASED KNOCK SUPPRESSION SYSTEM USING A MULTIPLE ACTUATION STRATEGY

Pub. No.:    WO/2013/163089    International Application No.:    PCT/US2013/037603
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Tue Apr 23 01:59:59 CEST 2013
IPC: F02P 5/152
Applicants: CUMMINS INC.
Inventors: STROH, David
Title: CONTROL SYSTEM FOR A MODEL-BASED KNOCK SUPPRESSION SYSTEM USING A MULTIPLE ACTUATION STRATEGY
Abstract:
The present invention provides for predicting peak cylinder temperatures above which knock in an engine may become more frequent and then provides one or more actuation approaches to reduce the knock of the engine while maintaining engine performance. The actuation approaches of the present invention include one or more of direct injection, engine gas recirculation, and spark retarding, where the application of one or more the actuation approaches is determined based upon using operational and engine characteristic inputs as well as modeling and estimation values as inputs in a feedforward control methodology.