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:
-
- Canton, MI
- Stacy, MN
- Ann Arbor, MI
- Milford, MI
- Plymouth, MI
- Washington, MI
- 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
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16C - SHAFTS
- 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 = {Tue Oct 23 00:00:00 EDT 2007},
month = {Tue Oct 23 00:00:00 EDT 2007}
}