Fca US LLC

Andrew P White

William P Attard

Lurun Zhong

Ryan C Masters

Tamer Badawy

Manvinder Singh

A method of controlling an idle speed of an engine of a vehicle, includes the steps of determining that the engine is decelerating to or is operating at a nominal idle speed, determining that a vehicle brake is applied, determining an actual or projected electrical load of at least part of a vehicle electrical system is beyond an electrical load threshold, and increasing the engine speed to or maintaining the speed of the engine at a speed greater than the nominal idle speed range as a function of the electrical load to increase the electrical output of a generator coupled to the engine. The method may include determining that the brake is ceasing to be applied and then decreasing the engine speed to or toward the nominal idle speed.

Engine speed management with increased electrical power supply

A system and method of utilizing a pre-turbine wide-range oxygen (WRO2) sensor during both individual cylinder fuel control (ICFC) and scavenging of a turbocharged engine involve receiving, by a controller and from the WRO2 sensor arranged in an exhaust system of the engine at a point upstream of a turbine of a turbocharger of the engine, an unfiltered WRO2 signal indicative of a fuel/air (FA) ratio of exhaust gas produced by the engine, performing, by the controller, ICFC by controlling the engine using the unfiltered WRO2 signal, performing, by the controller, engine cycle average filtering of the WRO2 signal to obtain a filtered WRO2 signal, and, while the engine is scavenging, performing, by the controller, engine FA ratio and emissions control using the filtered WRO2 signal.

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Holly, MI, United States of America

Andrew P White