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Topic: Swept volume

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	MOTA 2 stroke engine software
		Mass of fresh charge supplied to the cylinder during scavenging divided by the mass of atmospheric air which would be contained in the swept volume (not the trapped swept volume) of the engine.
		This quantity, multiplied by the engine's swept volume and number of revolutions per second, gives the power required to compress the charge in the crankcase and compress the charge in the cylinder.
		This quantity, multiplied by the engine's swept volume and number of revolutions per second, gives the power required to overcome friction during the engine's operation.
	www.iwt.com.au /MOTATI.HTM (644 words)

	Sandia National Laboratories - Tips for Using Cubit Software
		This document is a description of the current state of volume interval matching for sweepable volumes (as of January 1999) in the beta release of CUBIT.
		The solution to this problem was to implement a slightly modified graphing algorithm which could search the volume geometry to detect the cases of multiple chains on the volume, and accurately tie the sets of constraints together to guarantee an interval match that would ensure the success of the sweeping algorithm.
		The vertices of this graph are the vertices of the geometry, and the edges of the graph are the curves or periodic surfaces on the volume geometry.
	cubit.sandia.gov /cutip4.html (1143 words)

	Interactive assembly planning in virtual assembly
		Swept volume generation and trajectory editing: VADE allows the user to record the trajectory of the part as it is being assembled.
		The other way is to create a swept volume of the path during the disassembly process, assemble all the other parts, and check the interference of the swept volume with other parts.
		The editing of the swept volume before the assembly geometry is finalized ensures the validity and significance of the swept volume.
	www.mel.nist.gov /msidlibrary/doc/vade98.html (3502 words)

	Volumetric display - Wikipedia, the free encyclopedia
		One of the first references to this type of system is in 1966, in which a vibrating mirrored drumhead re-images a series of patterns from a high frame rate 2-D image source, such as a vector display, to a corresponding set of depth surfaces.
		In one case, an addressable volume of space is created out of active elements that are transparent in the off state but are either opaque or luminous in the on state.
		Static volume multiplanar displays generate 3-D imagery by, for example, projecting light onto an electo-optical surface that undergoes periodic translational motion.
	en.wikipedia.org /wiki/Volumetric_display (1578 words)

	Geometric Modeling and CAD (Site not responding. Last check: 2007-10-26)
		The fundamental problem with swept volumes can be summarized as: given an arbitrary geometric entity, moving and rotating along an arbitrary path, what is the solid volume which represents all the points in space which the object has occupied.
		the swept volume is characterized as a "manifold," and is usually employed in a non-rigorous manner (although it may contain boundaries and singularities).
		For all these applications, the determination of voids existing in the volume, mass properties, and closed form equations for the boundary are crucial, for which swept volume analysis demonstrates significant potential.
	www.ccad.uiowa.edu /focus/designopt/modeling.html (205 words)

	Virtual Reality and Rapid Prototyping Laboratory
		The boundary of the deformed cutter swept volume in the previous pass is used to calculate the cutting force and cutter deflection for the current pass.
		The boundary of the deformed swept volume is input to Pro/Engineer for cutter swept volume visualization.
		The deformed swept volume analysis is integrated with machining physics to account for cutter deflection for the NC simulation.
	web.umr.edu /~vrpl/proj-cam.htm (672 words)

	Puma Race Engines Technical Guide - How to calculate engine capacity and compression ratio (Site not responding. Last check: 2007-10-26)
		The volume swept out is known as the "Swept Volume" and this is the capacity of each cylinder.
		Above the piston at TDC is the volume contained in the cylinder head gasket and combustion chamber - this volume is called the "Clearance Volume".
		The volume of a cylinder is calculated by multiplying the area of the bore of the cylinder by the length.
	www.pumaracing.co.uk /capacity.htm (511 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		Ray casting is used to perform Boolean operations between the tool swept volume and the virtual stock in dexel models to simulate the sculpting process.
		Workpiece and swept volume are both discretized by analytically intersecting with a set of rays.
		Swept volume is calculated based on the cutter location information derived from the NC codes.
	web.umr.edu /~wzxq6/Abstract.htm (782 words)

	How To Calculate Compression Ratio- Car Craft Magazine
		Compression ratio is the relationship of cylinder volume (or displacement) with the piston at BDC to cylinder volume with the piston at TDC.
		If the volume of the cylinder with the piston at BDC is 10 times greater than the volume of the combustion area with the piston at TDC, then 10 units of volume get squeezed into 1 unit of space, and the compression ratio is 10.0:1.
		For the purposes of calculating compression, we prefer to view the cc's of a dish as a positive number because a dish adds volume to the cylinder (and reduces the compression ratio); a dome is a negative number because it subtracts volume from the cylinder (and increases the compression ratio).
	www.carcraft.com /techarticles/calculate_compression_ratio (1685 words)

	Calculating Compression Ratios
		Combustion Chamber Volume: This is the total volume, in cubic centimeters, of each combustion chamber (the depression in the head surface that contains the valves and spark plug.) To obtain the volume, place the head level and inverted on the bench, with its valves and plug(s) installed.
		Deck Height Volume: This is the area of bore between the top of the piston and the top surface of the block when the piston is at the very top of its stroke.
		Constant Volume: The constant volume is the volume into which the swept volume is compressed on each compression stroke.
	www.secondchancegarage.com /public/165.cfm (520 words)

	Jason Shepherd's Home Page
		The difficulty with multisweeping is guaranteeing mesh conformity through the volume and often requires matching the target surface topology with the source surface mesh.
		This algorithm was presented at the 8th IMR and the paper "The Graft Tool:An All-Hexahedral Transition Algorithm for Creating a Multi-Directional Swept Volume Mesh" can be found in the roundtable proceedings.
		This is an algorithm designed to formulate interval constraints for swept, and eventually submapped, volumes which are not caught by the surface meshing constraints.
	endo.sandia.gov /~jfsheph (652 words)

	The Datsun Workshop Compression page
		The swept volume is the area the piston displaces in one up-down sweep.
		We already know the gasket volume, which is 7.47 cc, and the head volume, 53.6 cc.
		You are increasing your start volume, but keeping the end volume the same,(we are assuming, for it will change with different stroke cranks, different length rods...), and are compressing more air.
	www.geocities.com /row4navy/compression.html (1423 words)

	Exhaust Cycle Part Two (Site not responding. Last check: 2007-10-26)
		The compression ratio is specified as (Volume at BDC/Volume at TDC) Using an '87 13B as an example, the chamber volume at BDC is 9.4 times greater than the volume at TDC, for a compression ratio of 9.4 to 1.
		The difference between the volume at TDC, and BDC is referred to as the swept volume, or displacement.
		A little bit of high school algebra shows that the volume at BDC is 44.66 cubic inches, and the volume at TDC is 4.75 cubic inches, or 10.6% of the total volume.
	personal.riverusers.com /~yawpower/febtech.html (2447 words)

	Blaine Technologies - Articles
		Swept cylinder volume is the area of the cylinder covered by the "sweep" of the piston as it moves from BDC to TDC, indicated by the blue region in Figure 3.
		Cylinder head chamber volume refers to the volume of the head's combustion chamber area, measured with the valves closed.
		Note that both volumes are expressed as cubic inches: the blue area in Figure 6 is our swept cylinder volume (43.731072 cubic inches) and the yellow area is the combustion chamber volume (5.631687 cubic inches).
	www.blainetech.net /articles (1085 words)

	Combustion Chamber Volume
		Of course the compression ratio is the ratio of the total volume, to the volume that it gets squished into.
		It allows you to seal off, then fill the combustion chamber on the assembled head and determine the volume of water that was required to fill it.
		When its full, you note the level left in the graduated cylinder, and the difference is the volume of the chamber.
	www.merkurxr4ti.com /chambervolume.html (444 words)

	[No title]
		For the kooler, regenerator, and heater we have constant volume.
		Because volume and temperature are constant for this space, differentiation of Eq.
		Optionally, the user can specify for the swept volume of the compression space or of the expansion space or both a range of values in the form : minimum, maximum, increment to compute net work per cycle and efficiency for many different engine designs in one swoop.
	mac6.ma.psu.edu /stirling/simulations/IdealAdiabatic (4504 words)

	Compression Ratio - Page 1
		C.R. The volumes involved are the volume of the combustion chamber (V2) and the "swept volume" of the cylinder.
		The swept volume is obtained by multiplying the cross-sectional area of the cylinder bore (Ac) by the stroke.
		Even if the volume of the combustion chamber (V2) is kept constant, we can increase the compression ratio simply by increasing the stroke and/or the bore size.
	e30m3performance.com /myths/more_myths1/comp_ratio/comp_ratio.htm (387 words)

	Implicit modeling of swept volumes and swept surfaces (US5542036)
		A method of determining surfaces of swept volumes, which defines a region reserved for the removal of an object, or the motion of an object, is determined employing implicit modeling.
		A definition of an object and the trajectory in which it is to be moved are provided to the swept surface display device.
		This is the surface of the swept volume having a clearance defined by the predefined distance.
	www.delphion.com /details?pn=US05542036__ (696 words)

	Dr. Denis Blackmore's Home Page
		His research in manufacturing science, fractal surface characterization, vortex breakdown, granular flow dynamics, metrology, biomathematics and his current work in swept volumes reflects his interests in applications of mathematics.
		''Swept volumes: a retrospective and prospective view''(with M.C. Leu, L.P. Wang, and H. Jiang), Neural, Parallel and Scientific Computations 5, 1997, pp.
		(1) Analysis and Representation of Swept Volumes: We developed characterizations of swept volumes of general piecewise-smooth objects in terms of trajectories of differential equations that we call the sweep differential equation(SDE) and the sweep-envelope differential equation(SEDE).
	web.njit.edu /~blackmor (1156 words)

	Basic Engine Terms (Site not responding. Last check: 2007-10-26)
		Piston Displacement is the swept volume of one cylinder.
		Compression ratio is the ratio of the volume above the piston at BDC compared to the volume above the piston at TDC.
		Clv = The clearance volume of one cylinder (in
	www.uark.edu /depts/aeedhp/courses/agme1613/Terms.htm (154 words)

	Image-Swept Volumes (Abstract) (Site not responding. Last check: 2007-10-26)
		Many graphical objects can be represented by swept volumes (including its subset - generalised cylinders) by sweeping 2D or 3D templates along 3D trajectories.
		In this paper, we present a new approach for constructing swept volumes using image templates.
		We utilise scalar fields as our underlying data type, and employ volume ray casting techniques for rendering swept volumes in their original sweeping specifications as well as in their voxelised approximations.
	www.eg.org /EG/CGF/volume21/issue3/abstracts/CGF604.HTML (147 words)

	Principles
		Enlargement of the swept volume allows for an increase in power output, as more air is available in a larger combustion chamber and thus more fuel can be burnt.
		This enlargement can be achieved by increasing either the number of cylinders or the volume of each individual cylinder.
		The engine aspirates the same volume of air, but due to the higher pressure, more air mass is supplied into the combustion chamber.
	www.turbochargedpower.com /Principles.htm (480 words)

	SWEPT VOLUME COMMUNITY web page
		Similarly, in the ROBOTICS industry, swept volume technology is implemented for the determination of workspace, for dexterity analysis, and path verification.
		Identify application areas and commercial technologies where swept volume can be used.
		Inetgrating state-of-the-art methods and formulations pertaining to swept volumes.
	www.icaen.uiowa.edu /~amalek/sweep/sweeptV.htm (182 words)

	4A) Generative models
		At right are two swept objects, one with a circular cross-section, one with a polygonal cross-section.
		A flume (water tunnel) at a swimming complex is modeled as a circle swept along a particular path.
		A swept surface may be easily converted to polygons by converting the outline of the 2D cross section to a polygon, and converting the sweep path to connected set of line segments.
	www.cl.cam.ac.uk /Teaching/1999/AGraphHCI/notes/ag4.note (1700 words)

	IBM Software - DMU Optimizer 2 (DMO) - Add-on Overview
		This function is particularly useful in industries where the design is created using surfaces and you need volumes to perform real-world analyses such as interference or clash detection or measurements, such as volume or inertia, on the digital mock-up.
		DMU Optimizer 2 (DMO) generates the swept volume of a moving part using a simulation you define.
		The vibration volume command generates the dynamic envelope surrounding the different positions engendered by the vibration of a part or a group of parts to ensure accurate space reservation and collision detection.
	www-306.ibm.com /software/applications/plm/catiav5/prods/dmo (1011 words)

	Understanding Selection of Injection Moulding Machine
		The characteristic of specific volume (cc/g) v/s temperature should be referred to obtain the density at moulding temperature.
		Therefore, inspite of available maximum shot volume corresponding to maximum stroke of say 4D or 4.5D, only maximum shot volume of 3D to 3.5D should be considered while selecting the machine.
		The maximum swept volume of the machine with larger injection stroke should be DE- RATED to the value corresponding to 4 times diameter of the screw while comparing with other machines.
	pcbolur.freeservers.com /glimm11.htm (5561 words)

	True Compression Ratios Article by Bill Cole
		The piston may have valve relief’s cut in; if so, the volume of these must be added to the calculations; if the piston features a dome, the dome volume must be subtracted.
		The other formula needed is an outgrowth of the definition of compression ratio, which is equal to the volume BDC divided by the volume TDC, as mentioned earlier.
		There are numerous ways of calculating the swept volume, but we have found our old faithful cylinder volume formula to be the most accurate.
	www.imperialclub.com /Repair/Engine/compression.htm (1199 words)

	RX-7 Owners Club - increasing volume
		However, is it possible to increase the volume of the 13B by enlarging the bathtubs on the rotors?
		Displacement is swept volume; the difference between maximum and minimum volume.
		The total volume is, at BDC, 2 cubic inches, but it's still only moving 1 cubic inch every 2 revolutions.
	www.rx7club.com /showthread.php?t=416073 (367 words)

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