JPS5834649B2 - rotary engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in rotary engines and improvements related to the same.

It is an object of the present invention to provide a rotary engine having a high power-to-weight ratio combined with a relatively small number of moving parts and a high number of combustions per revolution.

According to the invention, at least one
a stator having an inner surface with a pair of stator chambers and a raised arcuate cam profile between the stator chambers; a rotor mounted within the stator; and a respective chamber within the rotor. a plurality of propulsion vanes, each pivotally mounted on the propeller vane, each having a forward compression surface and a rear surface; and a plurality of cam followers each coupled to one of the propulsion vanes. enters the stator chamber and passes through it, rotating each propulsion vane toward the surface of each stator chamber, and during the expansion stroke, the space between the front compression surface of one propulsion vane and the back surface of the preceding propulsion vane. a fixed cam defining an explosion chamber, said raised arcuate cam profile remaining in each of said stator chambers until said leading propulsion vanes have moved toward completion of the expansion stroke; Said 1
A rotary engine is provided, characterized in that two propulsion blades are immovably held in corresponding chambers within a rotor.

The present invention will be explained below with reference to illustrated embodiments.

The present invention encompasses a rotary engine having a plurality of, for example six, propulsion vanes swingably mounted in respective chambers of a rotor rotatably mounted within a stator.

The stator is provided with at least one pair of opposed chambers, in each said chamber the combustion of the low engine cycle is carried out.
Exhaust and intake strokes are performed.

Accordingly, each stator chamber is provided with an intake and an exhaust port through which air is directed toward the compression surface of the propelling vanes to the stator and to the adjacent propelling vanes as the rotor rotates within the stator chamber. Make it possible to be blown into the space.

The air thus forced into the rotary engine is caused by an outer cam profile on the inner surface of the stator which causes each propelling vane to swing inward and directs the air in the rotor chamber between the compression surface and the inner surface of the stator. It is compressed as it is compressed between.

As the first propulsion vane approaches the point where the fixed cam begins to open it into the stator chamber, the fuel charge (at this point the cam profile of the stator, the front surface of the rotor chamber and the compression surface of the subsequent propulsion vane) increases. The mixture of both is ignited by normal compression/ignition or diesel principles as the first propelling vane opens and an explosion is caused by combustion or combustion at the back of the first propelling vane. Assign a departure schedule.

The effect of this arrangement is that, in the rotary engine of the present invention, each propellant vane has a compression surface such that the front surface of each propellant vane is the compression surface, and the back surface of each propellant vane is the surface toward which the explosion that occurs during the firing stroke is directed. The effect is to carry the charge to the leading propulsion vane as it passes through the stroke.

The outer cam profile provided by the inner cam surface maintains the opening of each propulsion vane after ignition of the fuel-air mixture of each propulsion vane until at least the preceding propulsion vane has moved toward the completion of its firing stroke. is now delayed.

This is due to the fact that adjacent firing strokes do not occur and the ignition and subsequent explosion of the fuel-air mixture occur symmetrically about the rotor, in that no reversal action is experienced by the rotor. This is a considerable advantage.

In one embodiment of the present invention, two stator chambers are provided and positioned opposite to each other around the stator, and six propulsion blades are swingably mounted around the rotor, and each propulsion blade is attached to the rotor. Two cycles of the engine are completed each revolution, causing the engine to perform 12 start strokes each revolution.

However, any suitable number of opposed pairs of stator chambers may be provided with any suitable number of symmetrically spaced propulsion vanes depending on the desired design and power characteristics of the engine.

Referring now to the accompanying drawings and in particular to FIG. 1, a rotary engine is shown with a stator 1 and a shaft 1 within the stator
The rotor 2 is shown schematically in cross section with the rotor 2 mounted at 5.

The stator 1 has a pair of opposed chambers 3, each chamber 3 being divided into two individual segments 4 and 5, which have a common life but are offset in their center.

Each side of the flat surface connecting both segments 4 and 5 is provided with an intake lower and an exhaust port 6, respectively, the intake lower being connected to a blower (see FIG. 5) and an exhaust port 6.
is connected to an exhaust manifold (not shown) in any known manner.

Cam contours 3 are also provided or formed on the inner surface of the stator 1 between each of the chambers 3.

The rotor 2 is provided with a plurality of propulsion blades 9 mounted in a chamber 10 in the rotor, and the propulsion blades 9 are swingably mounted in the chamber 10 by gudgeon pins 23. , the gudgeon pin abuts a fixed cam 14 mounted on one of a pair of end plates mounted on each side of the stator 1, and extends through a radial slot in the rotor. A swinging arm 12 is mounted which engages a cam follower 13 located therein.

The cam follower 13, which moves according to the ring spacing of the cam 14,
, rotates within the stator 1, causing the propulsion vanes 9 to swing outwardly into each stator chamber 3, and the cam profile 8 on the inner surface of the stator 1 (as explained in more detail below) ) The propulsion blades 9 are swung inward into the chamber 10 of the rotor 2.

Fuel injection ports 16 are provided at suitable points around the stator, and the fuel is injected into the compression chamber formed between the compression front surface 17 of the propulsion vane and the front surface of the rotor chamber 10 to which the same vane belongs. It is positioned so that it is injected approximately 10' into the air before the leading propulsion vanes begin to open into the chamber 3.

This 10° fuel injection allows full power to be applied to the leading propulsion vanes as they open, which is the combustion or firing phase of the engine cycle.

As the propelling vanes swing along the chamber 3 toward the exhaust port 6 to a greater angle, a larger surface area is exposed to the explosive charge behind the rear face 18 of the vanes.

As the propulsion vanes, such as those marked with the symbol X, pass through the exhaust port 6, the combustion gases are discharged into the exhaust manifold,
The next propulsion vane, marked W, advances behind and opens during its firing stroke to complete the exhaust of the gas behind the propulsion vane X.

The cam profile 8 shows that the propeller vanes, such as those marked with the symbol W, are located approximately on either side of the completion of the firing stroke and the beginning of the discharge stroke of the leading propellant vanes, such as those marked with the symbol X. 10°
It is designed to allow it to start opening inside.

Once the propulsion blade It turns out.

Continuing with the explanation of the engine cycle and still referring to the propulsion vane
The air is blown into the air between the propelling blades
The fuel injection port 1 follows the cam contour 8 as it advances around the circumference of the cam contour 8.
It is compressed when moving towards 8 (see propulsion vane Y).

In this position and as shown in FIG.
The propulsion vane Z is approaching the opening start position, but preferably about 1
Before 0', fuel is injected into the compressed air carried by the propulsion vanes, Y, and as the propulsion vanes Z open, the entire charge carried between the front 17 of the propulsion vanes Y and the inner surface of the stator 1 is Ignition occurs and explosive force is applied to the back surface of the propelling vane Z, causing the vane to perform a firing stroke.

The propulsion vanes W positioned in the opposite direction also start the starting stroke at the same time, and the symmetrical arrangement of the starting stroke is the output shaft 1.
5 substantially reduces any vibration.

Furthermore, the cam profile 8 moves a propelling vane, e.g. The propulsion vane (2) is maintained in a substantially closed state until the end.

This also substantially reduces backlash effects on the rotor and output shaft 15, thus substantially reducing vibration and increasing the efficiency of the engine.

2, 3 and 4 of the accompanying drawings, stator 1 is shown provided with a pair of chambers 3 having adjacent segments 4 and 5, and In between, see FIG. 1, an arcuate cam profile 8 is provided.

With particular reference to FIG. 4, each propulsion vane 9 is shown provided with a compression surface 17, around the circumference of which is a groove accommodating front, lateral and rear sealing members 19, 20 and 21, respectively. 22 are provided.

These sealing members are shown slidably and removably positioned within the groove 22 so that they can be easily replaced when necessary; These sealing members are preferably made of cast iron.

Each propulsion vane 9 is shown swingably mounted in its associated chamber 10 by a gudgeon pin 23, which is mounted in an axial hole in the propulsion vane 9 by a bolt 47; The blades are mounted in respective holes in the arcuate surface 26 behind each propulsion vane 9.

Each lever 47 is provided with an inclined surface 49 that abuts each of the pair of flat surfaces 48 of the gudgeon pin 23.

The lever 47 is provided with a slot 51 to allow the lever 47 to be rotated so that the inclined surface 49 is at the top within the axial slot.

A nut 50 engages the threaded end of the stopper 47 to pull the sloped surface 49 of the stopper 47 towards the flat surface 48 of the pin 23 to attach the cock to the propulsion vane 9.

The arcuate surface 26 and the explosion surface 18 are adapted to slide within the arcuate chamber 10 in which the propulsion vanes 9 are mounted.

Splined grooved end 5 of each gudgeon pin 23
Attached to 2 is a swinging arm 12 by a nut engaged with a screw 53, which arm has a respective passageway extending through the rotor from the top surface of the rotor to an inwardly recessed portion 27 adjacent the shaft 15. cam follower 13, which is slidably positioned within 54.

The cam follower 13 abuts a cam 14 mounted on one end plate 28.

The end plates 28 and 29 are attached to the stator 1 by through bolts 31, suitable locating pins 30, and corresponding holes provided in the abutting surfaces of the stator 1 and the end plates 28 and 29.

For example, the sealing member 63 made of neoprene (trade name) is attached to the cam 1.
4, and a passageway 54 in the rotor is filled with a suitable lubricating oil to allow the cam follower 13 to slide freely within the passageway. .

As the rotor 2 rotates, the cam followers 13 follow the contours of the cams 14 and are caused to move up and down in their respective passages 54, thus in turn causing the propulsion vanes 9 to swing.

The front sealing member 19 of the propulsion vanes 9 provides a gas-tight seal between the leading edge of each propulsion vane 9 and the inner surface of the stator 1 .

A peripheral sealing member is also provided in a groove 34 around the outer periphery of the rotor 2 on each side of the chamber 10, the same sealing member being segmented to allow for expansion and having six The sealing members 57 of each pair are provided as pairs of sealing members 57.
7 are mutually supported by a corrugated spring steel member 56 and mounted such that the groove 34 is above the corrugated spring steel member 62 to create a fluid-tight seal between the outer peripheral portion of the rotor 2 and the inner surface of the stator 1. is set up.

The rotor 2 is shrink-fitted into the splined groove of the shaft 15, and the shaft 15 and the rotor 2 are mounted in the stator 1 by bearings 58, shown as ball bearings, located in each end plate. Therefore, one end of the shaft 15 is
As explained with reference to the figures, a fuel injection pump and a blower are mounted and driven at the open end.

The cam 14 is provided with a spline groove portion 56 for positioning the cam within the stator 1, a ring nut 64 for mounting the cam 14 in position, and a sealing member 65 are also provided between the shaft 15 and the cam 14.

The rotor 2 has blower blades 3 provided on each end surface of the rotor.
2, and the outer edge of the stator 1 has deep sloping slots 37 and lateral force grooves 38 across the circumferential surface of the stator 1, these slots, grooves and blower blades extending around the engine. Facilitate and directional flow of cooling air.

Each of the stators 1 has a raised platform 73 provided with an intake opening 60 and an exhaust opening 59 such that an intake and exhaust manifold is provided on each platform 7.
3 in a known manner.

Openings 59 and 60 pass through stator 1 and communicate with both exhaust and intake ports 6 and 7, respectively.

During operation of the engine of the present invention, the explosion face or back surface 18 of each propulsion vane 9 more than doubles in area as the explosion pressure of the fuel-air mixture decreases.

This allows the applied torque to continue right up to the exhaust point, yet allows the exhaust pressure to fall.

Furthermore, the speed of the tip of the propelling vane is very high at low rotations, which reduces the impact loads on the propelling vane 9.

The propellant vanes are also balanced with respect to centrifugal forces, and this substantially reduces the wear factors acting on the propellant vanes and also ensures that the propellant vanes are in a sealed position during the compression stroke of each propellant vane. be made to reach.

The centrifugal force acting on the rotor also reduces the load on the cam follower as the cam follower rotates within the stator with the rotor.

In a preferred embodiment of the invention, both the stator and rotor are made of aluminum, and the cam, cam follower, swing arm, and gudgeon pin are all made of hardened steel.

With particular reference now to FIG. 5, the loch engine of the present invention, generally represented by arrow 40, is shown partially in section so that the engine shaft 15 projects outwardly from the engine and is in a suitable position. It is shown schematically coupled to a blower 41 by a gearing arrangement (not shown).

The blower 41 has a substantially conical vane support 42 on which is mounted a series of vanes 43, shown schematically in partial section.

Air passing through and over the engine passes through ducts 45 in the engine shroud 67 to the first stage blower vanes 43, and from there the air then passes through ducts 44 to the engine 44.
0 to the intake manifold opening 60 and from there through the second and third stage vanes as they are returned to the intake lower.

An exhaust duct 68 is shown connected to the exhaust port 6 via an exhaust opening 59.

A plurality of fuel injection pumps 46 are also mounted on the shaft 15, preferably one for each stator chamber of the stator, and these fuel injection pumps are used in the fuel distribution system of conventional four-stroke motor vehicle engines. Preferably, it is driven from shaft 15 by a cam arrangement similar to that used in the invention.

The pump 46 is communicated with the fuel injection port by a fuel line 69.

Although the invention has been specifically described above with reference to a compression-ignited internal combustion rotary engine, it should be understood that the fuel-air mixture is utilized to detonate the propellant vanes and spark plugs or the fuel-air mixture. The engine of the present invention can be easily adapted to be used as an engine which is adapted to be drawn or introduced into the stator chamber by other ignition devices.

Furthermore, if the opening provided in the stator is modified appropriately,
The engine of the invention can also be easily adapted to operate as a turbine or a pump.

As explained above, the cam follower is lubricated by a sealing system and on the other hand is mounted on the shaft 15 or
An oil pump (not shown) driven by the blower 4
Oil is jetted into the air stream blown into the stator chamber from 1 to lubricate each propulsion vane.

Although in the engine shown in the accompanying drawings, with particular reference to FIG. 2, the cam follower 13 impinges directly on the swinging arm 12 and the fixed cam 14, it is contemplated that the cam follower operation It is that it can be helped by a spring.

According to the invention, therefore, a rotary engine is provided which has a relatively small number of moving parts and yet has a high power/weight ratio, the engine shown in the accompanying drawings having two stator chambers and six stator chambers. has propulsion vanes and therefore one of the rotors
Performs 12 activation strokes per rotation.

Although the invention has been described above for purposes of illustration and with reference to preferred embodiments thereof, it is to be understood that such embodiments fall outside the scope of the invention as defined by the following claims. It does not matter if it is changed or improved in various ways.

[Brief explanation of the drawing]

1 is a schematic cross-sectional view of a rotary engine according to a preferred embodiment of the present invention; FIG. 2 is a partially sectional end view of a rotary engine according to a preferred embodiment of the present invention; and FIG. Partially sectional side view of the rotary engine of
FIG. 4 is a sectional view and rear view of an exploded arrangement of propulsion vanes and gudgeon pins used in a rotary engine according to a preferred embodiment of the present invention, and FIG. 5 is a partially sectional view of a rotary engine according to another embodiment of the present invention. FIG. 1... Stator, 2... Rotor, 3...
...Stator chamber, 8...Cam surface, 9.
... Propulsion vane, 10 ... Chamber in the rotor, 13 ... Cam follower, 14 ... Fixed cam.

Claims (1)

Claims: 1. A stator 1 having an inner surface provided with at least one pair of stator chambers 3 occupying opposite positions and a raised arcuate cam profile 8 between these stator chambers 3; A rotor 2 mounted in the stator 1 and a plurality of propulsion vanes 9 each pivotally mounted in each chamber 10 provided in the rotor 2 and having a front compression surface 17 and a back surface 18. and engages a plurality of cam followers 13 each coupled to one of said propulsion vanes 9, so that the surface of each stator chamber 3 as each propulsion vane 9 enters and passes through the stator chamber 3. Each propulsion blade 9 is rotated toward the front compression surface 17 of one propulsion blade (for example, W) during the expansion stroke.
and a fixed cam 14 defining an explosion chamber between the rear face 18 of the preceding propulsion vane (e.g. A rotary engine characterized in that the one propulsion blade W is held immovably in a corresponding chamber 10 in the rotor 2 until the preceding propulsion blade X finishes moving toward completion of the expansion stroke. .