About: Four-stroking

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Four-stroking is a condition of two-stroke engines where combustion occurs every four strokes or more, rather than every two. Though normal in some instances at idle, extremely high engine speeds, and when letting off the throttle, such firing is uneven, noisy and may, in cases of malfunction, damage the engine if allowed to continue unabated. In chain saw operation, where natural fluctuation of chain bite during a cut can cause momentary over-revving, the full throttle mixture is adjusted for four-stroking to occur at a set high rpm, cutting engine speed and enriching lubrication.

Attributes	Values
rdf:type	disease
rdfs:label	Four-stroking (en)
rdfs:comment	Four-stroking is a condition of two-stroke engines where combustion occurs every four strokes or more, rather than every two. Though normal in some instances at idle, extremely high engine speeds, and when letting off the throttle, such firing is uneven, noisy and may, in cases of malfunction, damage the engine if allowed to continue unabated. In chain saw operation, where natural fluctuation of chain bite during a cut can cause momentary over-revving, the full throttle mixture is adjusted for four-stroking to occur at a set high rpm, cutting engine speed and enriching lubrication. (en)
dcterms:subject	Two-stroke engine technology
Wikipage page ID	33389978 (xsd:integer)
Wikipage revision ID	1121637229 (xsd:integer)
Link from a Wikipage to another Wikipage	Roots blower Scavenge blower Model engine Top dead center Two-stroke engine technology Control line Two-stroke engine Common knowledge Ignition timing Turbocharger Water skiing Outboard motor Two-stroke diesel engine EMD 567 Exhaust system Diesel motorcycle Forced induction Glow fuel Kadenacy effect Small engine Diesel engine Idle (engine) Compression ignition engine Spark-ignition engine Venturi tube Schnuerle porting Petroil Petrol engine Scavenging (automotive) Chain saw Bottom dead center dbr:Slide_carburettor
sameAs	Four-stroking Four-stroking Four-stroking
dbp:wikiPageUsesTemplate	dbt:About dbt:According_to_whom dbt:Cite_book dbt:Efn-lr dbt:More_citations_needed dbt:Notelist-lr dbt:Reflist dbt:Weasel_inline
has abstract	Four-stroking is a condition of two-stroke engines where combustion occurs every four strokes or more, rather than every two. Though normal in some instances at idle, extremely high engine speeds, and when letting off the throttle, such firing is uneven, noisy and may, in cases of malfunction, damage the engine if allowed to continue unabated. Four stroking will occur in a correctly adjusted two stroke engine at full throttle without load when the air-fuel mixture becomes overly rich and prevents the engine from running faster. At such high speeds a mixture that is too lean will cause the engine to over-rev as well as overheat, and in engines running on premixed fuel a mixture that is too lean will cause poor lubrication. In chain saw operation, where natural fluctuation of chain bite during a cut can cause momentary over-revving, the full throttle mixture is adjusted for four-stroking to occur at a set high rpm, cutting engine speed and enriching lubrication. (en)
gold:hypernym	Condition
prov:wasDerivedFrom	wikipedia-en:Four-stroking?oldid=1121637229&ns=0
page length (characters) of wiki page	8288 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Four-stroking
is Link from a Wikipage to another Wikipage of	Model engine Two-stroke engine Humphrey pump Scavenging (engine)
is foaf:primaryTopic of	wikipedia-en:Four-stroking

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