I just got tired of Keiths' whining ;-) about needing a new power-plant for next
season and thought I would offer an altenative to his gremlin-riddled Rodek. I
believe the Rhomb is the solution, as long as Dan can figure out the class &
displacement (keep you busy this winter) . I'm not sure what would happen if
you fed nitrous into this beast...........Actually, I'm not real sure what
happens when you put gas into this thing!
Ed
John Beckett wrote:
> 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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