Caterpillar Inc.

Caterpillar Sarl

John Edward Preble, Jr

Sage F Smith

Arick Matthew Bakken

Kevin Anthony O'Neil

Terry Marlin Smith, Jr

Kimberly Melissa Stanek

Andrew P Bachle

An engine command override may occur when a diesel particulate filter (DPF) requires regeneration. The need for regeneration may be indicated by regeneration level. The engine may be operated in a normal mode when the DPF regeneration level is below a regeneration level threshold, wherein the engine command is based on the throttle input. Additionally, the engine may be operated in an override mode when the DPF regeneration level is above a regeneration level threshold and the engine is operating in the idle state, wherein the engine command is based on a predetermined throttle regeneration setting.

Engine control system and method for initiating a diesel particulate filter regeneration

A machine includes an internal combustion engine disposed within an engine compartment and supported on a machine frame. An exhaust stack has an inlet fluidly connected to an exhaust manifold of the internal combustion engine and an outlet in fluid communication with ambient air. A diesel particulate filter is disposed along the exhaust stack. A cooling package includes at least one heat exchanger and a blower fan. The blower fan is configured to blow cooling air from the engine compartment sequentially through the at least one heat exchanger and an outlet of the cooling package. Exhaust gas exiting the exhaust stack outlet is mixed with the cooling air exiting the cooling package outlet in a high temperature zone surrounding the exhaust stack outlet to form a fluid mixture, and a temperature of the fluid mixture at a perimeter of the high temperature zone is below 200 degrees Celsius.

Method of mixing exhaust gas exiting an exhaust stack outlet with cooling air exiting a cooling package outlet and machine using same

A skid steer machine includes an operator cage supported on a skid steer machine frame, a pair of lift arms pivotably attached to the skid steer machine frame behind the operator cage and extending longitudinally on both sides of the operator cage, and a rear mounted engine compartment supported on the skid steer machine frame. The rear mounted engine compartment includes an internal combustion engine, a diesel particulate filter fluidly connected to the internal combustion engine and positioned between the internal combustion engine and the operator cage, and a cooling package having a predominantly horizontal orientation. The cooling package is at a higher location within the rear mounted engine compartment than the diesel particulate filter.

Diesel particulate filter packaging and method of directing airflow in a skid steer machine

A machine includes an internal combustion engine disposed within an engine compartment and supported on a machine frame. An exhaust stack has an inlet fluidly connected to an exhaust manifold of the internal combustion engine and an outlet in fluid communication with ambient air. A diesel particulate filter is disposed along the exhaust stack, and the machine includes an active regeneration system for regenerating the diesel particulate filter. A cooling package including at least one heat exchanger and a blower fan. The blower fan is configured to blow cooling air from the engine compartment sequentially through the at least one heat exchanger and an outlet of the cooling package. Exhaust gas exiting the exhaust stack outlet is mixed with the cooling air exiting the cooling package outlet in a high temperature zone surrounding the exhaust stack outlet to form a fluid mixture. An electronic control module is in control communication with the active regeneration system and includes a regeneration control algorithm operable to detect a speed of the blower fan.

Method of mixing exhaust gas exiting an exhaust stack outlet with cooling air exiting a cooling package outlet including a regeneration control algorithm and machine using same

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Fuquay Varina, NC, United States of America

John Edward Preble, Jr