Advanced lean burn injector igniter system

Patent metadata

Field	Value
Publication number	US-10082292-B1
Application number	US-201715704683-A
Country	US
Kind code	B1
Filing date	Sep 14, 2017
Priority date	Feb 4, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

An internal combustion engine with a piston having a piston head with a resonance cavity opening onto the head, and where a fuel nozzle located in a cylinder head is positioned to inject a fuel such as natural gas into the combustion chamber where resonance formed within the resonance cavity will ignite the fuel without the need of a spark plug. Inlet and exhaust ports in the cylinder head allow for air and combustion gas enter or leave the combustion chamber.

First claim

We claim the following:

1. A piston for an internal combustion engine in which the engine is without a spark plug, the piston comprising:
a piston head;
a resonance cavity opening onto the piston head; and,
the resonance cavity having a shape to produce ignition of a fuel within the engine without a spark plug due to a resonance formed within the resonance cavity.

2. The piston of claim 1 , and further comprising:
the resonance cavity is rectangular in a cross sectional side view.

3. The piston of claim 1 , and further comprising:
the resonance cavity has a cavity length greater than the cavity width.

4. The internal combustion engine of claim 1 , and further comprising:
the fuel is natural gas.

Assignees

• Florida Turbine Tech Inc

Inventors

• Miller Timothy J
• Hicks Paul G

Classifications

• F23Q1/02 Primary

  using friction or shock effects · CPC title

• F02F3/28

  Other pistons with specially-shaped head · CPC title

• F02P23/00 Primary

  Other ignition · CPC title

• F02P15/04

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

• F02B9/06

  with non-timed positive ignition, e.g. with hot-spots · CPC title