Patent Number: 9,970,390

Title: Systems and methods for removing coking deposits in a fuel injection system

Abstract: Methods and systems are provided for reducing coking deposits in a fuel injection system. In one example, a method may comprise humidifying intake air of an intake system of an engine in response to a determination that fuel injector coking is occurring, or after a duration has passed since a most recent humidification event. A humidifying fluid, such as water, may be injected into the intake system to humidify the intake air, and the resulting humidified intake air may reduce and/or remove coking deposits on one or more direct fuel injectors of the fuel injection system.

Inventors: Kraemer; Frank (Neunkirchen-Seelscheid, DE), Grieser; Klemens (Langenfeld, DE), Hohenboeken; Kay (Cologne, DE), Wojahn; Jens (Bergisch Gladbach, DE), Berkemeier; Oliver (Bergisch Gladbach, DE)

Assignee: Ford Global Technologies, LLC

International Classification: F02M 25/028 (20060101); F02M 65/00 (20060101)

Expiration Date: 2022-05-15 0:00:00