AU2005100008A4 - A combustion engine utilising pistons activating two contra-cam-lobe-blades per cylinder - Google Patents

Description

PAGE ONE A COMBUSTION ENGINE UTILISING PISTONS ACTIVATING TWO CONTRA-ROTATING CAM-LOBE-BLADES PER CYLINDER All combustion engines employing a crank with connecting-rods to pistons Endure a side thrust to the pistons on the face to the cylinder-wall, opposite 00 The descending throw of the connecting-rod, crank-pin and webs. This Thrust increases engine friction and wear and allows the piston to tilt slightly, warping the piston rings and reducing the working-life of the piston, its rings and the cylinder wall.

It is the purpose of this engine to eliminate the problems associated with This added work-load and to provide a piston/cylinder mating with a Greater life expectancy.

The following is a description of this engine, its adaptation to various Engine applications and its method of operation:- The respiration and ignition systems in past and present use can be Incorporated in this invention so that it can operate within the parameters of Any combustion or fuel process or induction system; whether gasoline; Compression ignition; LPG or other combustible gases, plus air and steam pressure.

With the foregoing to be included as design additions to the prime power Source; the following is a description of this power system and its method Of operation.

PAGE TWO o Each cylinder whether single or with multiple grouping has short round 00shafts supported by bearings at suitable positions below the base of the Scylinder well and secured at each end of the short-shafts are cam-lobetr blades of suitable and identical profile. Pairs can be arranged at suitable c 5. opposed positions to comply with the firing-order of adjoining cylinders and they can be of any number of degrees to agree to that demand.

At the appopriate position, short-shafts as stated, with cam-lobe-blades which will face each other with their respective short-shafts forming a continuous alignment.

Between the cam-lobe-blades and said bearings, on each short-shaft will be a drive mechanism, be it a gear or chain-wheel or other device which can transfer the rotating force to long-shafts mounted parallel to the series of short-shafts alignment.

Regardless of the location of the shafts, the purpose is to conjoin via known mechanisms to allow a final power out-put on a common-shaft.

Within the pistons are two bearing wheels side by side, these are supported by a common axle pin and said bearing-wheels have their rotating peripheries in contact with the said cam-lobe-blades.

Attached to the lower inner portion of the piston are suitable trunnions; PAGE THREE 00pins or wheels, held in contact with the cam-lobe-blades via grooves, 8 spaced-pins or other apparatus which allows the pistons to follow t¢ their respective cam-lobe-blades.

A further addition is raised sections following the profle of the camlobe-blades to act as track-guides for the bearing wheels and prevent any turning of the piston assembly.

The trunnion and pins etc. will not be under stress during normal operating conditions and serve mainly to ensure the pistons are arrested during non-working strokes when first starting and or should a mis-fire occur.

As exhaust and intake phases occur whilst the piston is at rest, the piston will always be under pressure when rising or falling, keeping constant contact with the cam-lobe-blades. This is an ideal situation for forced induction which can include intake ports to be placed about the lower cylinder area to allow intake at the bottom of the stroke whilst the piston rests for 180 and to have over-head exhaust valves similar to G.M. diesel engines of the mid twentieth century and WW1 1 period.

In operation the cam-lobe-blades will contra-rotate, forced downwards by piston action, with the said bearing-wheels following the cam-lobe-blades PAGE FOUR profile; each bearing-wheel also contra-rotating in its action; the piston will 00 0 descend vertically without tilt and the cam-lobe-blades will contra-rotate 0 tung their respective short-shafts.

SWhen the pistons approach the base of the contra-rotating cam-lobe-blades, the pistons slow-down and depending on the base profile of the cam-lobeblade, will rest for a period oft 1800 at the bottom of the piston stroke.

Flywheel-action will ensure continuous rotation.

Each short-shaft will have a supporting spigot or companion bearing tunnel on opposing ends of their respective bodies, allowing additional support to reduce impulse stress on the cam-lobe-blade short-shafts.

As the pistons rise and fall the piston bearing wheels follow the cam-lobeblade profiles, the downward stroke providing motive-force to rotate the shafts assembly and drive the auxiliary mechanisms such as fuel and water pumps; injectors; electrical devices plus fuel and ignition systems.

PAGE FIVE in COMPONENTS BY NUMBER CI Short shafts assembly fig 1/(28) Fig 2/ (54) Fig 3.

Cam-lobe-blades (1 and 3) Fig 1/29,30,35,36 Fig 2/(51,52,75,76) Fig 3; 2a/3a Fig4.

Pistons (4 Fig 1/(38, 87) Fig 3; 15a,15b Fig 4.

00 Piston bearing wheels Fig 1 (43,44,71,72) Fig 3;5a,5b Fig 4 SPiston bearing wheels axle pin Fig 1/(42, 70) Fig 3; 6a,6b, Fig 4 Pin and trunnion guide Fig 1/ (7a) Fig la/ (87,88) Fig 3.

Pin and trunnion Guide groove (13) Fig la. (46,49,78,73) Fig 3.

Gear or chain wheel for long-shaft (8,10) Fig 1; 8a,10a Fig 4.

Long shafts (9,11) Fig 1.

Spigot for short-shaft (12) Fig 1/ (31,37) Fig 2 (53,77) Fig 3; 12a Fig 4.

Optional chain for long-shaft (14,16) Fig 1; 14a Fig 4.

Piston retaining pins/trunnions (17,18,19,20,21,22,23,24) Fig 1; 17a,18a,19a 2 1a.22a.23a.24a Fig 4. (45,48,74,79,59, 60,80,81,82,83) Fig 3.

Orbit of cam-lobe-blade peak (25) Fig 1; 25a Fig 4.

Piston relieved wall-section (26,27) Fig 1/ (41,40,69,68) Fig 3; 26a,26b,27a,27b Fig.4.

gear or wheel on short-shafts (38) Fig. 1/(33) Fig 2. (56,62,85) Fig. 3.

Cylinder well (15) Fig. 1/(66.65) Fig. 3/(32,34) Fig. 2; 15a, 15b Fig 4.

Piston rings (39, 67) Fig 3/ (88) Fig 1; 88a, 88b Fig. 4.

Bearings for short-shafts (55,57,61,63,84,86) Fig 3.

Claims (3)

1. 2. An engine embodiment as in claim 1, where the cam-lobe-blades make continuous contact with bearing wheels mounted within the piston-bodies and are captive via, pins; trunnions; wheels; and the like, retained and freely able to move in tracks; grooves; tunnels and the like.
2. 3. An engine embodiment as in claims 1 and 2 where the cam-lobe- blades are arranged about the ends of short-shafts, independently supported by bearings and mated to a contra-rotating cam-lobe blade and conjoined freely via a spigot on one short-shaft, supported in a tunnel on the opposite cam-lobe-blade short-shaft. O CLAIMS PAGE TWO
3. 4. An engine embodiment as in claims 1, 2 and 3 where the said short-shafts bearing the cam-lobe-blades have mounted gear 00 O wheels or chain-wheels or a combination of any known power O _O transmission-devices, are connected to further devices mounted about long-shafts attached via bearings operating parallel to the alignment of the series of short-shafts on or about the engine embodiments collective cylinder assemblies, to enable a common rotation at the main power-outlet-shaft. The cam-lobe-blades may follow any suitable configuration, such as egg or pear profile, be of any geometric shape and have varying grade ramps with disimilar ramps on opposing sides.