SK84696A3

SK84696A3 - Piston engine with linear crank mechanism

Info

Publication number: SK84696A3
Application number: SK84696A
Authority: SK
Inventors: Petr Slabina
Original assignee: Petr Slabina
Priority date: 1996-06-27
Filing date: 1996-06-27
Publication date: 1998-01-14

Abstract

Priamočiary vratný pohyb piestov piestového motora sa prevádza na rotačný tak, že piest (8)je spojený pomocou piestnej tyče (7) s čapom (1) priamočiareho kľukového mechanizmu. Priamočiary kľukový mechanizmus sa skladá z čapu (1), pohybujúceho sa po priamke, ktorá je výsledkom rotačného pohybu pastorka (2) s priemerom d, zapadajúceho do vnútorného ozubenia (3) s priemerom D = 2d. Rotačný pohyb pastorka je prevedený na výstupný hriadeľ (5) cez kľuku (4). Použitím priamočiareho kľukového mechanizmu je možné vytvoriť aj viacvalcové motory s rôznym sklonom valcov. Čapy (1) pre každý smer sú na rozstupovej kružnici pastorka (2) a vytvárajú osobitný kľukový hriadeľ. Vynález tak umožňuje vytvoriť motory s valcami do V, X alebo do hviezdice.Straight reciprocating piston piston piston movement it is converted to rotary so that the piston (8) is coupled by means of a piston rod (7) with a straight crank pin (1) mechanism. Linear crank mechanism with consists of a pin (1) moving along a line that is the rotational movement of the pinion (2) with the diameter d, engaging the internal toothing (3) with a diameter D = 2d. The pinion's rotary motion is converted to the output shaft (5) through the crank (4). Using straightforward the crank mechanism can also be multi-cylinder motors with different rollers. Pins (1) for each direction is on the pitch circle of the pinion (2) and they form a separate crankshaft. The invention thus allows create engines with cylinders to V, X or starfish.

Description

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The invention relates to a piston engine using

him. engines, especially combustion engines, the linear piston movement is converted to a rotary movement by a crank mechanism in three basic embodiments: - a crank mechanism with a connecting rod - a crank mechanism with a crusher - a crank mechanism with a coulter

The drawback of a conventional crank mechanism with a connecting rod or a crucible is that it creates considerable lateral forces that are trapped by the piston or the crucible and transmitted by " sliding friction on the roller or guide. In addition, the progression of inertia is not harmonious and difficult to balance. The crank mechanism with the backdrop has certain advantages. Allows a good balance. Furthermore, it allows the counter-rotary pistons to be fixedly fixed through the piston rods to relieve the crank mechanism. It also allows you to close the workspace under the piston. But shear friction in the background will not be avoided. In addition, the design of the wings in larger engines encounters weight and strength problems. vi / HQ / &Zí'f

The aforementioned drawbacks are eliminated by the device according to the invention, which is characterized in that a linear crank mechanism is used to convert the rectilinear movement of the piston into a rotary one. 2

The straight crank mechanism utilizes the fact that, when the pinion diameter d in the internal toothing of diameter D = 2d is rolled out, all points on the pitch circle of the pinion move along straight lines that pass through the center of the internal toothed wheel.

The piston has only a piston rod with a bearing that is on the pin of the linear crank mechanism. The pin is on the pitch circle of the pinion and moves along a straight line. The advantage of this solution is that it consists of rotating parts, does not create lateral forces that would have to be trapped by friction of the shifting parts, and can be equally well balanced as a back-up mechanism. Unlike the backstop mechanism, there is no large backdrop but only a common bearing at the point of connection of the piston rods of the opposing pistons. This reduces the dimensions and inertia forces and allows the mechanism to be used even for the largest engines that have been solved with the cruiser. The result is: -higher engine efficiency (less friction) -higher shake (good balance) -main dimensions for the same performance.

It is particularly advantageous to use the invention in engines where the working space is above and below the piston, such as two stroke engines or the Stirlig engine. With a two-stroke engine, it is possible to separate the space below the piston from the crankcase, thereby improving lubrication and ecology, reducing the amount of lubricant in the fuel and hence the exhalers. 3 For large two-stroke engines over 1000 kW, where a closed space under the piston is used, the invention allows substantial shortening and relief of the mechanism. The four-stroke engine can be burned under and above the piston. Since there are 4 combustion chambers per crank, they complement each other and only the resulting force is applied to the pin after subtracting the forces needed for engine function (exhaust, suction, compression). Cooling the piston is through the piston rod.

7

Fig. 1 is a schematic of a piston engine with a linear crank mechanism.

Figure 2 shows the use of a separate crankshaft, which allows the use of a straight crank mechanism for different directions of piston movement. This makes it possible to create multi-cylinder engines such as star motors and V and X cylinder motors.

The device works as follows:

The reciprocating motion of the piston is rotated so that the piston 8 acts through the piston rod on the pin-crank mechanism which rotates the output shaft 5.

The rectilinear crank mechanism consists of a pin 1 moving along a straight line resulting from the rotational movement of the pinion 2 of diameter d engaging the internal toothing 3 of diameter D = 2d. The pivot axis 1 passes through the pinion pitch circle of the pinion, which has the property that all of its points move along straight lines passing through the center of the wheel 4 with the inner toothing 3. their travel and hence the stroke of the piston is 2d. The rotary movement of the pinion 2 is transferred to the output shaft 5 via the crank 4 with the arm d / 2.

The space 10 below the piston is separated from the crankcase 12 and can therefore be used for the engine operating cycle. With a 4-stroke engine for combustion and a 2-stroke engine for filling, the fuel does not come into contact with crankcase oil 12 as with conventional 2-stroke engines.

Multi-cylinder engines with cylinders up to V, X or star motors with a straight crank mechanism are designed with a separate crankshaft 13, Fig. 2. The crankshaft 13 has pins 1 on the pinion spacing circle 2. The pins therefore move along straight lines that have an angle α relative to the roll inclination. The pins on crank shaft 13 are aligned with each other 2a. In the straight crank mechanism, the resulting forces on the pins are smaller and the crankshaft pins 13 have little eccentricity to each other. This allows up to three times the shaft 13 to be bent without intermediate support and up to 12 cylindrical motors.

Claims

The invention is directed to converting the reciprocating reciprocating piston reciprocating motion to a rotary piston characterized in that the piston (8) is coupled by means of a piston rod (7) to a pin (1) of a linear crank mechanism.