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Pre-combustion chamber assembly for internal combustion engines

A technology of pre-combustion chamber and internal combustion engine, which is applied to internal combustion piston engines, engine components, combustion engines, etc., can solve the problems of small thickness and fracture of electrode arms.

Inactive Publication Date: 2017-08-11
CATERPILLAR ENERGY SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this mechanical bending process may be limited, for example due to the yield strength of the material, and during operation of the ignition electrode the electrode arm may break due to the selected bending radius being too small for the material used and the material thickness used

Method used

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  • Pre-combustion chamber assembly for internal combustion engines
  • Pre-combustion chamber assembly for internal combustion engines
  • Pre-combustion chamber assembly for internal combustion engines

Examples

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Embodiment Construction

[0017] The following is a detailed description of exemplary embodiments of the present invention. The exemplary embodiments described herein and illustrated in the drawings are intended to teach the principles of the invention so that one of ordinary skill in the art can implement and use the invention in many different environments and for many different applications. Therefore, the exemplary embodiments are not intended and should not be considered as a limiting description of the scope of patent protection. Rather, the scope of patent protection shall be defined by the appended claims.

[0018] Within the meaning of the invention, a substantial correspondence of the radially inner surfaces of the mass element and of the electrode arm means that both the mass element and the radially inner surfaces of the electrode arm have substantially similar inclinations with respect to the longitudinal axis. In particular, the directions of slope of the radially inner surfaces of the m...

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Abstract

A pre-chamber assembly (60) for an internal combustion engine is disclosed. The pre-chamber assembly may have a pre-chamber main body configured to be mounted to the internal combustion engine and defining at least a portion of a pre-chamber extending along a longitudinal axis. The pre-chamber assembly (66) may also have an ignition electrode (80). The ignition electrode (80) may have a center electrode and at least one electrode arm extending from the center electrode at least partially into the pre-chamber. The at least one electrode arm (82) may extend in both a radial direction with respect to the longitudinal axis (90) and an axial direction with respect to the longitudinal axis (90). Additionally, the pre-chamber assembly may have a mass element (102) including at least one radial inner face (104) facing the at least one electrode arm (82). The at least one radial inner face may be non-parallel with respect to the longitudinal axis.

Description

technical field [0001] The present invention relates to a pre-combustion chamber assembly for an internal combustion engine, and in particular to a pre-combustion chamber assembly comprising an ignition electrode for use in a gaseous fuel internal combustion engine. Background technique [0002] Pre-combustion chamber assemblies (hereinafter "pre-chamber assemblies") that employ spark ignition in some internal combustion engine applications (e.g., gaseous fuel applications) are known, which include a pre-combustion chamber (hereinafter "pre-chamber") Typically, a prechamber is a relatively small gas accumulation chamber located in the prechamber assembly or engine cylinder head. The prechamber is in fluid communication with the main combustion chamber of the internal combustion engine via a number of small flow passages. During operation, The ignition electrode creates a spark for igniting the mixture of gaseous fuel and air in the pre-chamber (rather than igniting the gaseo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B19/10F02B19/18F02B43/04F02P13/00
CPCF02B19/1004F02B19/18F02B43/04F02P13/00F02D19/02H01T13/467H01T13/54F02B19/12Y02T10/12F02F1/24H01T13/32H01T13/39
Inventor F·舍费尔
Owner CATERPILLAR ENERGY SOLUTIONS
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