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Title:
希薄燃焼予燃焼室
Document Type and Number:
Japanese Patent JP6498223
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lean-burn pre-combustion chamber.SOLUTION: In certain embodiments, a unique method and pre-combustion chamber (PCC) structure may ensure very efficient flame propagation of lean fuel-air mixture in natural gas engines by reducing the amount of fuel admitted into the PCC. A PCC may include an enclosed volume of 1-3% of the main combustion chamber volume, with a spark plug and a fuel passage located opposite one or more PCC discharge nozzles to create a relatively rich fuel-air mixture with relatively low turbulence in the spark plug region and a relatively lean fuel-air mixture with relatively high turbulence in the nozzle region, which can be reliably and efficiently ignited, resulting in a high velocity flame jet/torch emerging from the pre-chamber into the main chamber. The PCC may be threaded with a 22 mm×1.5 or 7/8"-18 thread size, to thereby allow the PCC to be screwed into a cylinder head in place of a spark plug.SELECTED DRAWING: Figure 1

Inventors:
Tozzi, Luigi, Pee.
Sotiro Polo, Maria-Emanuela
Besholi, Greg
Repley, david, thomas
Application Number:
JP2017017822A
Publication Date:
April 10, 2019
Filing Date:
February 02, 2017
Export Citation:
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Assignee:
Prometheus Applied Technologies, LRC
International Classes:
F02B19/16; F02B19/12; F02B19/18
Domestic Patent References:
JP2015528875A
JP2012193747A
JP2011099404A
Foreign References:
WO2015060236A1
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito