Electro-motive Diesel, Inc.

Brad Silvers

Reddy Pocha Siva Sankara

Michael B Goetzke

Dennis John Melas

Curtis Montgomery

An exhaust system is disclosed for use with an engine. The exhaust system may have an exhaust duct, an aftertreatment component disposed within the exhaust duct, and a resistive grid disposed within the exhaust duct at a location upstream of the aftertreatment component. The exhaust system may further have a controller configured to determine a need to heat the aftertreatment component to a threshold temperature, determine a load increase that should be placed on the engine to raise a temperature of exhaust exiting the engine when the aftertreatment component needs to be heated, and determine an amount of electrical power that should be applied to the resistive grid to raise the temperature of the exhaust. The controller may also be configured to selectively implement a combination of engine load increase and application of electrical power to the resistive grid to raise the temperature of exhaust to the threshold temperature.

Exhaust system implementing active regeneration control

A control system is provided for use with an engine. The control system may have a coolant pressure sensor configured to generate a first signal indicative of a pressure of coolant circulating through the engine, and an oil pressure sensor configured to generate a second signal indicative of a pressure of oil circulating through the engine. The control system may also have a controller in communication with the coolant and oil pressure sensors. The controller may be configured to determine functionality of the coolant and oil pressure sensors during operation of the engine, and to selectively allow operation of the engine in a semi-protected mode when the coolant pressure sensor or the oil pressure sensor is determined to be non-functional.

Engine control system for mobile machine

A system is disclosed for controlling fuel injectors in an internal combustion engine having a plurality of individual engine cylinders with associated pistons. The system includes at least one electronic engine control module configured to control the fuel injectors and having a memory with predetermined injector firing patterns stored therein. The firing patterns specify the fuel injectors to be fired and the fuel injectors to be skipped, in an engine cycle under conditions of reduced power demand. For each engine cycle in a succession of cycles under the reduced power demand condition, the engine control module determines the number of fuel injectors to be fired based upon the reduced power demand data, selects from the stored predetermined firing patterns a firing pattern specifying the injectors to be fired and the injectors to be skipped, and orders the specified fuel injectors to be fired sequentially in accordance with the selected predetermined firing pattern.

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Plainfield, IL, United States of America

Brad Silvers