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Sigma KEE - Piston
Piston(piston)
piston, plunger

appearance as argument number 1
-------------------------


(documentation Piston EnglishLanguage "A piston is a component of reciprocating engines, reciprocating pumps, gas compressors and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas- tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/ or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder wall.") Cars.kif 293-303
(externalImage Piston "http://upload.wikimedia.org/wikipedia/commons/thumb/ d/ d4/ Piston.gif/ 73px-Piston.gif") Cars.kif 305-305
(subclass Piston Artifact) Cars.kif 291-291 Piston is a subclass of artifact
(typicalPart Piston EngineCylinder) Cars.kif 344-344 A piston is typically a part of a engine cylinder
(typicallyContainsPart Piston EngineCylinder) Cars.kif 345-345 A engine cylinder typically has a part piston

appearance as argument number 2
-------------------------


(termFormat EnglishLanguage Piston "piston") Cars.kif 292-292
(typicalPart PistonRing Piston) Cars.kif 3808-3808 A piston ring is typically a part of a piston
(typicallyContainsPart PistonRing Piston) Cars.kif 3809-3809 A piston typically has a part piston ring

antecedent
-------------------------


(=>
    (and
        (instance ?E EngineCylinder)
        (instance ?C Crankcase)
        (instance ?P Piston)
        (instance ?T TwoStrokeTransfer)
        (holdsDuring ?T
            (located ?P ?E))
        (equal ?E
            (HoleHostFn ?C))
        (eventLocated ?T ?E))
    (hasPurpose ?P
        (holdsDuring ?T
            (partiallyFills ?P ?C))))
Cars.kif 509-521
(=>
    (and
        (instance ?E EngineCylinder)
        (instance ?I InternalCombustionChamber)
        (instance ?P Piston)
        (instance ?T TwoStrokeIntake)
        (holdsDuring ?T
            (located ?P ?E))
        (equal ?E
            (HoleHostFn ?I))
        (eventLocated ?T ?E))
    (hasPurpose ?P
        (holdsDuring ?T
            (partiallyFills ?P ?I))))
Cars.kif 463-475
(=>
    (and
        (instance ?EC EngineCycle)
        (instance ?E InternalCombustionEngine)
        (instance ?P Piston)
        (instance ?U UnitOfLength)
        (part ?P ?E)
        (patient ?EC ?P)
        (eventLocated ?EC ?E)
        (pistonStroke ?E
            (MeasureFn ?LM ?U)))
    (not
        (exists (?T1 ?T2 ?L1 ?L2 ?D)
            (and
                (during ?T1
                    (WhenFn ?EC))
                (during ?T2
                    (WhenFn ?EC))
                (holdsDuring ?T1
                    (located ?P ?L1))
                (holdsDuring ?T2
                    (located ?P ?L2))
                (distance ?L1 ?L2
                    (MeasureFn ?D ?U))
                (greaterThan ?D ?LM)))))
Cars.kif 1943-1965

consequent
-------------------------


(=>
    (instance ?ECR EngineConnectingRod)
    (hasPurpose ?ECR
        (exists (?P ?C)
            (and
                (instance ?P Piston)
                (instance ?C Crankshaft)
                (connectedEngineeringComponents ?P ?ECR)
                (connectedEngineeringComponents ?C ?ECR)))))
Cars.kif 1972-1980
(=>
    (instance ?HC HydraulicCylinder)
    (exists (?HH ?C ?P)
        (and
            (instance ?C HoleRegion)
            (equal ?HH
                (HoleHostFn ?C))
            (attribute ?C Cylinder)
            (instance ?P Piston)
            (part ?P ?HC)
            (part ?HH ?HC))))
Cars.kif 1606-1615


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