Stable combustion in spark-ignited lean-burn engine

Patent metadata

Field	Value
Publication number	US-9482192-B2
Application number	US-201514588559-A
Country	US
Kind code	B2
Filing date	Jan 2, 2015
Priority date	Jan 2, 2015
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A lean-burn engine may comprise a combustion chamber, an intake manifold configured to provide a lean fuel/air mixture to the combustion chamber, and a pre-chamber in fluid communication with the combustion chamber. The pre-chamber may include a spark igniter configured to initiate combustion of the lean fuel/air mixture in the combustion chamber, and a heating element contained in the pre-chamber. The heating element may be configured to heat the pre-chamber to a temperature sufficient to allow the production of hydrogen peroxide (H 2 O 2 ) from fuel and air in the pre-chamber.

First claim

What is claimed is:

1. A method for stabilizing combustion in a lean-burn engine, comprising:
providing the lean-burn engine, the lean-burn engine including a combustion chamber and a pre-chamber in fluid communication with the combustion chamber, the pre-chamber having a spark igniter and a heating element contained in the pre-chamber;
providing a mixture of fuel and air to the pre-chamber;
using the heating element to heat the pre-chamber to a temperature sufficient to produ…

Assignees

• Caterpillar Inc

Inventors

• Kim Charlie

Classifications

• F02B19/12

  Mechanical Engineering · mapped topic

• F02M35/104

  Mechanical Engineering · mapped topic

• F02B2043/103

  Mechanical Engineering · mapped topic

• F02B2019/002

  Mechanical Engineering · mapped topic

• F02M25/14 Primary

  Mechanical Engineering · mapped topic