Caterpillar Inc.

Brandon Shull

Ronald Graham Silver

Justin Werner McMenamy

Matthew Edward Leustek

Amy E Fischer

A system may determine that an upcoming pass is a final pass associated with loading a machine. The system may compute, based on determining that the upcoming pass is the final pass, a trigger time associated with causing a trigger signal to be transmitted. The trigger time may be computed based on a final pass completion time that identifies a time at which the final pass is expected to be completed. The trigger time may be prior to the final pass completion time. The system may cause the trigger signal to be transmitted at the trigger time. The system may cause, based on a receipt of the trigger signal, a transition of the machine from an idle state to a ready state to be initiated. The transition from the idle state to the ready state may be caused to be initiated prior to a time at which the final pass, associated with loading the machine, is completed.

Shovel-to-truck communication to improve acceleration

An engine system includes an electronically controlled compression ignition engine configured to burn diesel fuel and a high ash oil to produce an exhaust with a temperature and NOx to soot ratio as well as a controlled level of ash deposits on the particulate filter of the system. An aftertreatment system is fluidly connected to the engine and includes a diesel oxidation catalyst, a reductant supply, and a diesel particulate filter coated with a NOx reduction catalyst. The soot load density on the diesel particulate filter can be stabilized by oxidizing soot at about a same rate as the compression ignition engine is supplying soot to the aftertreatment system.

Compression ignition engine system with improved regeneration via controlled ash deposits

An aftertreatment system is disclosed. The aftertreatment system can include a hydrolysis catalyst disposed within a first canister adjacent to a downstream end of the first canister and a nozzle positioned to inject reductant into the first canister upstream of the hydrolysis catalyst. A particulate collection device, which may be catalyzed to promote NOreduction in the presence of the reductant, can be disposed within a second canister of the aftertreatment system adjacent to an upstream end thereof. An exhaust conduit can extend from the downstream end of the first canister to the upstream end of the second canister. An interior volume within the exhaust conduit can extend from an upstream end adjacent to and in fluid communication with the hydrolysis catalyst to a downstream end adjacent to and in fluid communication with the particulate collection device.

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Peoria, IL, United States of America

Brandon Shull