skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Engine piston having an insulating air gap

Abstract

A piston for an internal combustion engine has an upper crown with a top and a bottom surface, and a lower crown with a top and a bottom surface. The upper crown and the lower crown are fixedly attached to each other using welds, with the bottom surface of the upper crown and the top surface of the lower crown forming a mating surface. The piston also has at least one centrally located air gap formed on the mating surface. The air gap is sealed to prevent substantial airflow into or out of the air gap.

Inventors:
 [1];  [2]
  1. Washington, IL
  2. Apex, NC
Issue Date:
Research Org.:
Caterpillar Inc., Deerfield, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014385
Patent Number(s):
7654240
Application Number:
US Patent Application 11/505,803
Assignee:
Caterpillar Inc. (Peoria, IL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02F - CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
DOE Contract Number:  
FC05-00OR22806
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Jarrett, Mark Wayne, and Hunold, Brent Michael. Engine piston having an insulating air gap. United States: N. p., 2010. Web.
Jarrett, Mark Wayne, & Hunold, Brent Michael. Engine piston having an insulating air gap. United States.
Jarrett, Mark Wayne, and Hunold, Brent Michael. Tue . "Engine piston having an insulating air gap". United States. https://www.osti.gov/servlets/purl/1014385.
@article{osti_1014385,
title = {Engine piston having an insulating air gap},
author = {Jarrett, Mark Wayne and Hunold, Brent Michael},
abstractNote = {A piston for an internal combustion engine has an upper crown with a top and a bottom surface, and a lower crown with a top and a bottom surface. The upper crown and the lower crown are fixedly attached to each other using welds, with the bottom surface of the upper crown and the top surface of the lower crown forming a mating surface. The piston also has at least one centrally located air gap formed on the mating surface. The air gap is sealed to prevent substantial airflow into or out of the air gap.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {2}
}

Patent:

Save / Share: