Caterpillar Inc.

Xiaohui Gong

Alan Ray Stockner

Glenn Brian Cox

Dongming Tan

Thomas Randall McClure

Robert Lowell Miller

Jason Hudgens

Stephen Michael Wiley

Kurtis Chenoweth

Matthew Fahrenkrug

Qiang Chen

Shivsinh Hitendrasinh Parmar

Amarnath Nelli

Na Cai

Ivan Palmer

A diesel exhaust fluid (DEF) system and a method of controlling the DEF system are disclosed. The method may include determining that a shutdown condition of the DEF system is satisfied; providing a control signal to open a valve of a buffer tank of the DEF system based on determining that the shutdown condition of the DEF system is satisfied; determining that a level of DEF remaining in the buffer tank satisfies a threshold; and closing the valve of the buffer tank based on the level of DEF remaining in the buffer tank satisfying the threshold.

Diesel exhaust fluid tank freeze mitigation

A cooling system for an injector tip for a diesel emission fluid (DEF) injection system is disclosed. The system uses a heat sink, such as a head for a regeneration system, to vaporize cooling fluid, in combination with a phase separation tank, to force cooling fluid backward through a cooling loop thereby allowing cooling of an injector tip following engine shutdown in a 'hot' shutdown situation.

Injector cooling apparatus

A fluid injector for an exhaust treatment device is disclosed. The fluid injector may have a housing at least partially forming a fluid chamber. The housing may have a central axis, and a fluid passageway configured to supply fluid to the fluid chamber. The supply of fluid may be in a tangential direction relative to the central axis.

Injector having tangentially oriented purge line

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Dunlap, IL, United States of America

Xiaohui Gong