Wow, where did you find this? any pictures to help explain the system.
Have seen other strange engines (Jocko's ring engine, one example) but never
in any type of use.
John Beckett
----- Original Message -----
From: "Ed Van Scoy" <edvs@uswest.net>
To: "Land Speed List" <land-speed@autox.team.net>
Sent: Wednesday, October 11, 2000 11:23 PM
Subject: QuadroRhomb
> QuadroRhomb
> US Pat.# 5,004,409 Euro Pat.#
> 0334302
>
> Jap.Pat.#2,727,197
> Russ.Pat.#2032112
>
> The notion "Displacement Machine" defines a machine with one or
> more
> chambers having changed volumes. Such a
> machine can work as a pump, as hydro- and compressed air motor, as
> a
> steam- and combustion engine. The most well-known and dominant
> construction of displacement machine is the cylinder-piston one; A
> further example is the Wankel stator-rotor construction.
> An absolutely new construction is called "QuadroRhomb", because
> it has
> four chambers with
> rhomb-shaped cross-sections. These chambers are formed by twelve
> dumb-bell-shaped elements and by one
> immobile (2) and one rotating (3) plate. The twelve elements are
> connected in a grid of four rhombs; all these
> nine connections are joints. Therefore the grid has nine axles.
> The
> central axle (7) of the grid (which joints four
> inner dumb-bell elements) is connected with the immobile plate
> (2). Two
> axles (6a and 6b) of opposite joints
> (connecting only two external elements) are connected with the
> rotating
> plate (3). The remaining six axles of the
> grid are free. The rotating plate has in its center a fixed
> connection
> with the power shaft (8), which rotates in a
> bearing placed in the plate (10). This shaft is placed parallel to
> the
> axles of the grid. The distance between the
> shaft (8) and the central axle (7) is a little bit smaller as
> compared
> with the distance between two axles of one
> element of the grid. The plates (2) and (10) and intermediate part
> (9)
> form the case of the machine. In the
> immobile plate (2) there are four openings (13a, 13b, 14a, 14b),
> which
> serve for input and output of the working
> substance (gas, steam, liquid). These openings are controlled by
> the
> grid elements during their movement. If the
> machine works as combustion engine with Otto- or Diesel-cycle,
> only one
> input and one output opening are
> needed (for example 13a and 14a). But in this case into the plate
> (2)
> must be placed spark plugs and/or fuel
> sprayers. If the power shaft (8) turns around, each chamber
> changes
> twice per revolution its volume from
> minimum Vmin (total compressed rhombic cross-section) to maximum
> Vmax
> (quadratic cross-section) and vice
> versa. Therefore the total volume displaced per revolution is
> 8´(Vmax _
> Vmin). The compression Vmax /Vmin up to
> 35 is possible. It must be emphasized, that during rotation of the
> shaft
> (8) the center of masses of
> QuadroRhomb stays in the same point, also if there is a liquid in
> the
> chamber and/or in the case. This is also
> valid for the asymmetrical variant of the grid (Fig.3). As
> compared with
> existing displacement machines
> QuadroRhomb is small, light, effective and cheap. It is very
> simple: it
> has no connecting rods, no crank shaft,
> no balancing masses, no valves, no cam shaft, no tooth gears. It
> does
> not need sealing elements like piston
> rings and it does not need a special fly wheel, because its
> rotating
> plate works as fly wheel too and smoothens
> over the angle vibrations. QuadroRhomb also has no radial
> vibrations,
> because its mass center stays in the
> same point. As a pump it pumps twice per revolution of power shaft
> from
> each of its chambers. As a combustion
> engine QuadroRhomb performs all four strokes in each of its four
> chambers only per one revolution of power
> shaft and works as an 8-cylinder machine. The sealing, cooling and
> lubrication problems can be successful
> solved. For example, the sealing of joints can be ensured by the
> fabrication accuracy of order of 0.01 mm.
> Because the joints are relative small and their parts having
> almost the
> same temperatures, the joints remain
> hermetic if themachine is going to work. Application of materials
> with a
> small thermal expansion (e.g. invar or
> ceramics) can be also useful. The sealing between the grid and the
> plates (2) and (3) is provided by the unique
> peculiarity of the new machine, namely, the possibility of
> operational
> changing of the distance between the plates
> (2) and (3). In Figure it is symbolically shown by the spring,
> which
> moves the plate (3) toward to the plate (2).
> Such a possibility does not exist in the old machines: it is not
> possible to change the diameter of cylinder or
> piston, the size of stator or rotor, and therefore special sealing
> elements between these parts are necessary.
> The cylinder serves as a bearing for a push-pull moving of the
> piston.
> This bearing is attracted by mechanical
> (especially when the connecting rod stays obliquely), thermal, and
> chemical influences. In contrast to it, in
> QuadroRhomb there are no essential mechanical forces between the
> grid
> and the plates, and the bearings of
> axles of grid have no direct contact with the combustion gas. The
> central axle (7) of the grid can be lubricated
> through a channel in it (it is shown in Figure); the rest eight
> axles of
> the grid can be lubricated through channels
> (in grid elements) connecting these axles with the case where the
> oil is
> sprayed because of the rotation. This oil
> lubricates the plates (2), (3) also. The openings of QuadroRhomb
> have
> large apertures (better as with 4- valves
> technique). The chambers of Wankel engine are too flat during
> combustion
> and first third of expansion phase.
> Because of that too much thermal energy is lost by the thermal
> flows to
> the walls. Also the combustion is not
> complete, and many poison products are generated. In contrast to
> that,
> the chambers of QuadroRhomb are
> compact, especially if "asymmetrical", not "symmetrical" form of
> grid
> is used, und have
> approximately the same volume-to-surface ratio as the
> cylinder-piston
> engine. The critical loading of the new
> machine arises in the bearings of the grid and is the same order
> as the
> loading in the piston-finger bearing of
> cylinder-piston machine. The maximal revolution rate depends on
> the size
> of the machine. Small machines can
> rotate faster. If the maximum revolution rate is limited by the
> dynamic
> forces, its value is approximately the same
> or some lower as compared with maximal revolution rate of existing
> machines having the same volume of
> chambers. But the whole productivity of QuadroRhomb is higher,
> because
> each of four chambers changes its
> volume from maximum to minimum and vice versa two times per
> revolution
> of power shaft. If the maximal
> revolution rate is limited by the ability of the valve's
> mechanism, the
> advantage of QuadroRhomb is still more,
> because it has no valves. The thermodynamics of QuadroRhomb as a
> heat
> engine has the next advantage:
> during the intake and compression strokes the working substance
> contacts
> with the relative cold zone of the
> immobile plate (3) and only later goes into contact with the hot
> zone.
> Such a space division leads to a high
> efficiency of the machine. Because of its simplicity the
> production of
> QuadroRhomb needs only a small quantity
> of raw materials and energy that is better for the environment
>
>
>
>
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