About: Undercut crankshaft

Facets (new session)
Description
Metadata
Settings
- Rule:
- Inverse Functional Properties:
- "Same As":

About: Undercut crankshaft Goto Sponge NotDistinct Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon

http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FUndercut_crankshaft&invfp=IFP_OFF&sas=SAME_AS_OFF

An undercut crankshaft is a form of crankshaft for piston engines, where the overall length of the crankshaft is shortened by overlapping the main bearings of the crankshaft with the big end bearings of the connecting rods. The French Chaise 100 hp engine of 1930 used a similar built up crankshaft with a 'quincunx' (staggered) cylinder layout to give a short, compact engine.

Attributes	Values
rdf:type	yago:WikicatCrankshafts yago:Artifact100021939 yago:Crankshaft103127408 yago:Implement103563967 yago:Instrumentality103575240 yago:Object100002684 yago:PhysicalEntity100001930 yago:Rod104100174 yago:RotatingShaft104111190 yago:Whole100003553
rdfs:label	Undercut crankshaft (en)
rdfs:comment	An undercut crankshaft is a form of crankshaft for piston engines, where the overall length of the crankshaft is shortened by overlapping the main bearings of the crankshaft with the big end bearings of the connecting rods. The French Chaise 100 hp engine of 1930 used a similar built up crankshaft with a 'quincunx' (staggered) cylinder layout to give a short, compact engine. (en)
foaf:depiction
dcterms:subject	Crankshafts
Wikipage page ID	39138438 (xsd:integer)
Wikipage revision ID	771880991 (xsd:integer)
Link from a Wikipage to another Wikipage	Cylindrical grinder Connecting rod Big end bearing Main bearing Bugatti Bugatti U-16 Quincunx Crankcase Crankshaft Crankshafts Grinding (abrasive cutting) Shrink-fitting Internal combustion piston engine Tunnel crankshaft dbr:Crank_web
sameAs	Undercut crankshaft Undercut crankshaft Undercut crankshaft Undercut crankshaft
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Mech-engineering-stub
thumbnail	wiki-commons:Special:FilePath/Longitudinal_section,_Bugatti_U-16.jpg?width=300
has abstract	An undercut crankshaft is a form of crankshaft for piston engines, where the overall length of the crankshaft is shortened by overlapping the main bearings of the crankshaft with the big end bearings of the connecting rods. Although this seems impossible at first glance, the geometry of the engine does permit this overlap. The big-end bearings of connecting rods are wider (along the crank axis) than the thickness of the rod itself. By making the with an offset to them, it is possible to place the main bearings closer together, closely sandwiching the rod passing between them, where this is now a narrower gap than the bearing size. The main bearings are similarly confined and each main bearing can be supported by only a thin wall across the crankcase. The difficulty with these engines is in their manufacture. The overall shape of the crankshaft and its webs is not a problem, but finishing the bearing surfaces by grinding is. There is no longer access for the large abrasive discs of a crankshaft grinder to reach each bearing, the offset crankshaft webs now being in the way. As a result, each bearing must be made and finish-ground individually; then assembled into a built-up crankshaft, usually by shrink-fitting. One of the few engines to use undercut crankshafts was the Bugatti U-16 aircraft engine, a typical Bugatti approach, where only their unlimited budget and attention to detail could afford such complexities. The U-16 engine also had each 8-cylinder crankshaft built as two 4-cylinder crankshafts, assembled by a bolted taper joint. This joint may be seen at the left-hand side of the close-up drawing. The French Chaise 100 hp engine of 1930 used a similar built up crankshaft with a 'quincunx' (staggered) cylinder layout to give a short, compact engine. (en)
gold:hypernym	Form
prov:wasDerivedFrom	wikipedia-en:Undercut_crankshaft?oldid=771880991&ns=0
page length (characters) of wiki page	2887 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Undercut_crankshaft
is Link from a Wikipage to another Wikipage of	Tunnel crankcase Ariès Bugatti U-16
is foaf:primaryTopic of	wikipedia-en:Undercut_crankshaft

Faceted Search & Find service v1.17_git139 as of Feb 29 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 56 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software