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Title: Crank shaft support assembly

Abstract

A crank shaft support assembly for increasing stiffness and reducing thermal mismatch distortion in a crank shaft bore of an engine comprising different materials. A cylinder block comprises a first material and at least two crank journal inserts are insert-molded into respective crank journal regions of the cylinder block and comprise a second material having greater stiffness and a lower thermal coefficient of expansion that the first material. At least two bearing caps are bolted to the respective crank journal inserts and define, along with the crank journal inserts, at least two crank shaft support rings defining a crank shaft bore coaxially aligned with a crank shaft axis. The bearing caps comprise a material having higher stiffness and a lower thermal coefficient of expansion than the first material and are supported on the respective crank journal inserts independently of any direct connection to the cylinder block.

Inventors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Canton, MI
  2. Stacy, MN
  3. Ann Arbor, MI
  4. Milford, MI
  5. Plymouth, MI
  6. Washington, MI
  7. Rochester, MI
Issue Date:
Research Org.:
US AUTOMOTIVE MATLS PTNRSHIP
Sponsoring Org.:
USDOE
OSTI Identifier:
919367
Patent Number(s):
7284528
Application Number:
11/373,544
Assignee:
Ford Motor Company (Dearborn, MI)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02F - CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
FC05-950R22363; FC05-020R22910
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Natkin, Robert J, Oltmans, Bret, Allison, John E, Heater, Thomas J, Hines, Joy Adair, Tappen, Grant K, and Peiskammer, Dietmar. Crank shaft support assembly. United States: N. p., 2007. Web.
Natkin, Robert J, Oltmans, Bret, Allison, John E, Heater, Thomas J, Hines, Joy Adair, Tappen, Grant K, & Peiskammer, Dietmar. Crank shaft support assembly. United States.
Natkin, Robert J, Oltmans, Bret, Allison, John E, Heater, Thomas J, Hines, Joy Adair, Tappen, Grant K, and Peiskammer, Dietmar. Tue . "Crank shaft support assembly". United States. https://www.osti.gov/servlets/purl/919367.
@article{osti_919367,
title = {Crank shaft support assembly},
author = {Natkin, Robert J and Oltmans, Bret and Allison, John E and Heater, Thomas J and Hines, Joy Adair and Tappen, Grant K and Peiskammer, Dietmar},
abstractNote = {A crank shaft support assembly for increasing stiffness and reducing thermal mismatch distortion in a crank shaft bore of an engine comprising different materials. A cylinder block comprises a first material and at least two crank journal inserts are insert-molded into respective crank journal regions of the cylinder block and comprise a second material having greater stiffness and a lower thermal coefficient of expansion that the first material. At least two bearing caps are bolted to the respective crank journal inserts and define, along with the crank journal inserts, at least two crank shaft support rings defining a crank shaft bore coaxially aligned with a crank shaft axis. The bearing caps comprise a material having higher stiffness and a lower thermal coefficient of expansion than the first material and are supported on the respective crank journal inserts independently of any direct connection to the cylinder block.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {10}
}

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