Antenna structure and internal combustion engine

Patent metadata

Field	Value
Publication number	US-9538631-B2
Application number	US-201414578758-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Jun 22, 2012
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

The antenna structure has a high frequency wave transmission line that transmits a high frequency wave and an emission antenna part for emitting the high frequency wave supplied via the high frequency wave transmission line. The emission antenna part includes a metal antenna having a rod-like shape and a ceramic layer that covers at least a part of the metal antenna.

First claim

What is claimed is:

1. An internal combustion engine comprising:
an ignition device disposed in a combustion chamber of the internal combustion engine; and
at least one antenna structure disposed in the combustion chamber of the internal combustion engine and provided with a high frequency wave transmission line that transmits a high frequency wave and an emission antenna part for emitting the high frequency wave supplied via the high frequency wave transmission line;
wherein the emission antenna part is configured of a metal antenna having a rod-like shape and a ceramic layer that covers at least a part of the metal antenna; and
wherein the emission antenna part is disposed so that a tip end of the emission antenna part is placed in the vicinity of the ignition device.

2. The internal combustion engine according to claim 1 , wherein
the ignition device comprises an ignition plug, and
the emission antenna part of the antenna structure is arranged in the vicinity the ignition plug.

3. The internal combustion engine according to claim 1 , wherein
the emission antenna part of the antenna structure is arranged between intake valves and/or between exhaust valves.

4. The internal combustion engine according to claim 1 , wherein
the emission antenna part is provided with a brim part.

Assignees

• Imagineering Inc

Inventors

• Ikeda Yuji
• TSURUOKA Ryoji

Classifications

• F02P15/04

  one of the spark electrodes being mounted on the engine working piston · CPC title

• F02P9/007

  by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition · CPC title

• H05H1/46 Primary

  using applied electromagnetic fields, e.g. high frequency or microwave energy (H05H1/26 takes precedence) · CPC title

• H01Q9/30

  with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) · CPC title

• F02P23/045

  using electromagnetic microwaves · CPC title