RU2337249C2 - Two-section rotor-piston engine with planetary opposed rotors - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: two-section rotor-piston modular engine with planetary opposed rotors incorporates at least a pair of rotor sections with a common output shaft with rotors-pistons fitted thereon and opposite to it and a stator casing. The stator casing features a cylindrical inner surface. The aforesaid two rotor sections are linked together by a reduction gear or a torsion shaft with a cantilever, inner gearing wheel in mesh with the external gearing wheel of appropriate rotor. Every rotor revolving in opposition around appropriate gear wheel features a hypocycloid generating line of the sides, two ledges and a central angle α≤45° and an appropriate circular generating line of the stator part inner surface.

EFFECT: improved manufacturability of rotor and stator.

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Description

The invention relates to mechanical engineering, namely to rotary piston internal combustion engines.

For the implementation of the compression ignition process in the engine, as is known / N.S. Khanin, S.B.Chistozvonov. Automotive rotary piston engines. M., Mashgiz, 1964, 184 pp. /, The compression ratio must be brought up to at least 14. To increase the compression ratio in a rotary piston engine with planetary motion of the rotor, it is additionally necessary to replace the round profile of the sides of the rotor with more complex profiles that represent They are the envelopes of the set of positions of the stator profile on a plane connected with the rotor. The use of a rotor with three protrusions theoretically allows to obtain a fairly high compression ratio (up to 15.5). With a further increase in the number of protrusions of the rotor, the greatest compression ratio rapidly decreases. Reducing the number of rotor protrusions to 2 makes it possible to increase the compression ratio to 140. In this case, however, the degree of uneven rotation of the motor shaft increases, and the sequence of compartments necessary for the piston engine cycle cannot be ensured without the use of slide mechanisms.

However, the closest in technical essence and the achieved result to the proposed technical solution is, according to the applicant, a rotary piston engine / RF patent No. 2141044 (CL F02B 53/08) dated 07/04/1997 /, containing at least , a pair of rotor sections with a common output shaft, opposite to which rotors are installed - pistons in the form of a trihedral prism, while on the one side of the inner curved surface of the stator in each section there are gas inlet and outlet windows, which are on the outer surface of the stator housing go to rigidly reinforced gas channels thereon with tubular walls, wherein in the housing of the stator working cavity volume constant on the engine comprises a combustion chamber volume and is provided with two mutually intersecting gas passageways, forming a total for their regenerative heat exchanger.

A disadvantage of the known technical solution is the technological complexity of performing the rotor profile in the form of a curved triangle and the corresponding epitrochoid profiling of the inner surface of the stator, which follows, in particular, from the work / I. Druzhinsky. Methods for processing complex surfaces on metal cutting machines. M. - L., "Engineering", 1965, 600 pp. /.

The objective of the invention is to improve the manufacturability of the manufacture of the rotor and stator of a rotary piston engine with a high degree of compression.

This task is achieved in that a two-section rotary piston engine with planetary motion of counter-rotating rotors, containing at least a pair of rotor sections with a common output shaft, opposite which rotors are installed - the pistons of these sections, the stator housing, according to the invention, the engine is made modular design, and the stator housing with a cylindrical inner surface, while two rotor sections with a common output shaft are mated to each other by means of a gear unit or a torsion shaft, guides attached cantilevered internal gear with external gear corresponding to the rotor, and each of the oppositely rotating about a respective gear rotors with two projections configured gipotsikloidnoy sides forming a central angle with α≤45 ° and corresponding to the circular generatrix of the inner surface of the stator part.

The invention is illustrated in figures 1 and 2.

A schematic diagram of a rotary piston engine of the proposed design is shown in Fig. 1, where 1 is a stator housing with a cylindrical inner surface, 2 and 3 are openings for inlet of a combustible mixture and exhaust of combustion products, 4 is a rotor with two protrusions 5 and 6 (seals are not shown), 7 - the gear wheel of the external gearing of the rotor 4, 8 - the gear of the internal gearing, mounted cantilever on the output shaft of the gear unit (pos. 9 of Fig. 2) or the torsion shaft.

A schematic diagram of the gearing of a rotary piston engine of the proposed design is shown in figure 2, where 4 and 10 are the rotors, 7 and 11 are the gears of the external gearing of the rotors, 8 and 12 are the internal gears mounted cantilever on the output shaft of the gear unit 9 or torsion shaft (not shown), 13 and 14 are eccentric shafts of sections I and II, respectively.

Works two-section rotary piston engine with planetary motion of counter-rotating rotors as follows.

With the synchronous rotation of counter-rotating rotors 4 and 10 around the corresponding gears 8 and 12, cantileverly mounted on the output shaft of the gear unit 9 or the equivalent torsion shaft (which is not shown in Fig.), The calculated doubling of the torque on the common output shaft of the engine occurs. In this case, the engine operates more uniformly than the single-rotor engine, due to the proposed scheme of synchronizing gears 8 and 12 and the general modular layout of the engine. Moreover, each of the rotors 4 and 10 in the proposed technical solution rotates around its axis, which, in turn, synchronously rotates around the shaft axis, respectively 13 and 14 power take-offs. This movement of the rotors is ensured by their de-axial arrangement on the eccentric shafts and the use of pairs of synchronizing gears, respectively 7 and 8 and 11 and 12, combined by, for example, a gear unit 9 or a torsion shaft (not shown in Fig.).

When the rotors rotate, the volume of the compartments between the sides of the rotor and the inner working surface of the stator (see Fig. 1) in each section continuously changes cyclically from the maximum value to the minimum synchronously due to the combination of the sections by, for example, a gear unit 9 or a torsion shaft (on Fig. not shown).

The manufacture of rotors and stators for the proposed design of a two-section rotary piston engine is possible on widely used CNC machines with a high degree of accuracy and using simple programs, which increases the overall technological level of rotary piston engines with a high degree of compression.

Claims (1)

A two-section rotary piston engine with planetary motion of counter-rotating rotors, containing at least a pair of rotor sections with a common output shaft, the opposite of which are installed rotors - pistons of these sections, the stator housing, characterized in that the engine is made in a modular design, and the housing the stator - with a cylindrical inner surface, while two rotor sections with a common output shaft are mated to each other by means of a gear unit or a torsion shaft having a fixed cantilever gear internal gearing with a gear wheel of the external gearing of the corresponding rotor, and each of the rotors counter-rotating around the corresponding gear with two protrusions is made from the hypocycloid generatrix of the sides with a central angle α≤45 ° and the corresponding circular generatrix of the inner surface of the stator part.

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