Internal-combustion engines – Rotary – With compression – combustion – and expansion in a single...
Patent
1986-11-14
1988-12-06
Koczo, Michael
Internal-combustion engines
Rotary
With compression, combustion, and expansion in a single...
418 36, F02B 5300
Patent
active
047889527
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an apparatus for driving a rotor having an output shift by means of a piston and intermediate driving gears.
The so-called Otto engines are well known. In these engines, a crankshaft or camshaft is driven via several pistons which move radially with respect to the shaft axis. This engine has proved to be disadvantageous in that, on the one hand, several pistons have to be provided in order to achieve a particular engine performance, each piston possessing its own cylinder, its own inlets and outlets and also its own ignition system. On the other hand, power transmission in a radial direction to a camshaft is always unsatisfactory. The Otto engines are in the form of reciprocating engines or rotary engines and function on the basis of the four-stroke or two-stroke principle. The four-stroke principle comprises intake, compression, ignition and combustion, and exhaust.
A rotary engine whose piston executes a continuous rotary movement is also known. An embodiment of this is the Wankel engine, in which a rotary piston which is mounted eccentrically in a trochoidal housing and has the shape of an equilateral triangle rotates by turning about a midpoint which itself simultaneously executes a rotary movement. The working process is based on the four-stroke principle and takes place in the working chambers which are located between the rotary piston and the housing wall, become larger and smaller, and effect gas exchange, i.e. intake, compress, expand and exhaust, with the aid of inlet and outlet slots in the housing wall which are controlled by the rotary piston. The particular advantages of the rotary engine over the reciprocating engine are the smaller number of components, the omission of masses which move to and fro, the omission of valve drive, smaller size and lower weight. On the other hand, however, they have the disadvantage that the production costs are considerable and sealing is complicated, and they possess an unfavourable combustion chamber with high heat losses and in particular have a large amount of uncombusted hydrocarbons and HC in the exhaust gas.
It is the object of the invention to develop a novel drive unit which functions with a small number of components but nevertheless has a very high efficiency, is light and compact, and manages without a camshaft or crankshaft. In particular, it is also intended to not only reduce the surface friction of the piston but to increase the power strokes severalfold.
This object is achieved by means of a piston that consists of two piston parts which together form combustion chambers. The two piston parts rotate about a common axis, the width of the combustion chambers being variable.
It has proved most effective for this purpose for one piston part to be in the form of a cylindrical section having a cutout segment in which the second piston part, in the form of a segment section, is inserted, the angle of the cutout segment being larger than the angle of the segment section. These differences in angles determine the width of the combustion chambers, whereby it is of course also possible to alter the power of the motor. Rotation of the two piston parts through 360.degree. is likewise intended to result in a four-stroke cycle being carried out, namely intake, compression, ignition and exhaust. Preferably, this four-stroke cycle is envisaged at least twice per 360.degree. rotation, but an increase is possible and is likewise within the scope of the invention.
Preferably, the piston parts should be shaped such that they possess in succession at least one cylindrical section and one segment section. This arrangement may of course be reproduced several times. Each cylindrical section or segment section is then assigned to a cylindrical section or segment section of the other piston part. This results in a piston having a prism-like appearance.
For power transmission, each piston part should be connected to a planet gear which in turn forms a frictional connection with a sun wheel, which is coupled to the rotor. This constitutes a furthe
REFERENCES:
patent: 2816527 (1957-12-01), Palazzo
patent: 4068985 (1978-01-01), Baer
LandOfFree
Rotary piston internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary piston internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary piston internal combustion engine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1488659