Rotary internal combustion engine

Abstract

Rotary internal combustion engine includes a body made of four parts, each of which is an L-shaped fragment, and, when connected, forming two mutually perpendicular ring-shaped walls in plan view with ribs on the outer surface and an annular groove inside, which form two passages, each of which contain a torus-shaped rotor, which can move along the groove. Each torus-shaped rotor has longitudinal notches located outside or inside the rotor forming cavities between the rotor and groove surface, connected to chambers located outside the walls. The intake and exhaust windows are made in the walls communicating with the cavities between the rotor and groove surface. The rotors are interconnected by the kinematic chain of rotation synchronization made of successively engaged gears, one of which is engaged with one torus-shaped rotor, and the last of the gears is engaged with the output shaft, rigidly connected with another torus-shaped rotor.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to RU patent application No. 2016113127, filed on Apr. 6, 2016, which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTIONField of the Invention[0002]The invention relates to mechanical engineering and more particularly to engine construction and considers the internal combustion engine (ICE) design, which may be applied as a drive mechanism for a wide range of vehicles.Description of the Related Art[0003]The principle of variable volume formation, when two rotors move, is known and described in detail in many publications. The main issue for mechanics of this type of designs is the rotor synchronization system. Most known designs include shafts and gears. At the same time, the use of shafts is highly undesirable in the synchronization system, since alternating loads on shafts lead to maximum shaft rotation, and, consequently, it is necessary to decrease the rotor segment to avoi...

AI Technical Summary

Benefits of technology

The present invention is about a rotary internal combustion engine that has several benefits over related art. The engine has a body made up of four L-shaped fragments which form two mutually perpendicular ring-shaped walls in plan view with ribs on the outer surface and an annular groove inside. The L-shaped fragments also form two passages, each containing a torus-shaped rotor. The rotors are interconnected by a kinematic chain of rotation synchronization made of successively engaged gears, one of which is engaged with an output shaft, which is rigidly connected with another torus-shaped rotor. The invention has advantages such as providing equal rotation speed of the torus-shaped rotors, as well as adjusting the length of the inlet windows through a process of elongation. Overall, the invention has unique features and benefits that are beneficial for rotary internal combustion engines.

Problems solved by technology

The main issue for mechanics of this type of designs is the rotor synchronization system.

At the same time, the use of shafts is highly undesirable in the synchronization system, since alternating loads on shafts lead to maximum shaft rotation, and, consequently, it is necessary to decrease the rotor segment to avoid rotor collision while moving, resulting in an increase of parasitic volume (discussed below).

Gear minimization in the synchronization system is important, because manufacturing of gears with a large diameter to rotate with high peripheral speeds is extremely difficult or at times technologically unachievable at this stage of development of mechanical engineering technologies.

For this purpose one has to reduce the rotor “diameter”, which results in reduction of engine volume” and limits its applicability.

Many designs often do not give due consideration to the end faces of rotors.

If the chambers are not heat insulated, its presence results in decrease of thermodynamic efficiency, and parasitic volume increases specific volume performance of engine, which deteriorates the design parameters.

However, the rotor spinning non-perpendicular planes, as well as the small-diameter shafts in the synchronization system lead to an increase of parasitic volume.

A number of designs include an asymmetric rotor that increases the design imbalance or leads to weighting at the attempt to mitigate this effect.

The three disc segment is shown in one design, which is not optimal, since it increases the engine dimensions by means of efficient increase of parasitic volume due to an increased number of points of intersection.

All these edesigns have one major disadvantage—the high peripheral speed of gear of the external engagement rotor.

The rotor spinning non-perpendicular planes are used in a number of designs as well, which reduces efficiency.

Moreover, the system in FIG. 23 of the reference is bulky.

Although the synchronization system in FIG. 24 contains only one intermediate shaft, it still has a gear of size 133, which is not significantly smaller than that used in the first type, and, therefore, it does not solve the manufacturability problem.

Nevertheless, the design is bulky.

Only one bevel gear and pinion is used in it, the system is compact, but it has a very long intermediate shaft and non-perpendicular planes of rotor spinning, which substantially reduces its efficiency.

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