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Sigma KEE - Piston
Piston

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
(typicalPart Piston EngineCylinder) Cars.kif 344-344
(typicallyContainsPart Piston EngineCylinder) Cars.kif 345-345

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


(termFormat EnglishLanguage Piston "piston") Cars.kif 292-292
(typicalPart PistonRing Piston) Cars.kif 3869-3869
(typicallyContainsPart PistonRing Piston) Cars.kif 3870-3870

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 1927-1949

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


(=>
    (instance ?ECR EngineConnectingRod)
    (hasPurpose ?ECR
        (exists (?P ?C)
            (and
                (instance ?P Piston)
                (instance ?C Crankshaft)
                (connectedEngineeringComponents ?P ?ECR)
                (connectedEngineeringComponents ?C ?ECR)))))		 Cars.kif 1956-1964
(=>
    (instance ?HC HydraulicCylinder)
    (exists (?HH ?C ?P)
        (and
            (instance ?C HoleRegion)
            (equal ?HH
                (HoleHostFn ?C))
            (shape ?C Cylinder)
            (instance ?P Piston)
            (part ?P ?HC)
            (part ?HH ?HC))))		 Cars.kif 1612-1622


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