CN102562261A - Annular double-piston engine - Google Patents

Abstract

An annular double-piston engine, including a housing, an end cover, a piston, and a main shaft. In the combustion chamber of the rear cylinder, there is a guide groove in the middle of the shell. The front piston and the rear piston are connected by a connecting piece. The connecting piece is equipped with a guide piece and a guide wheel. The guide piece is set in the guide groove, and the main shaft runs through the whole shell. And in the central axis position, the main shaft has a convex column inside the shell, and the convex column has a sinusoidal groove along the side of the cylinder. The groove divides the convex column into the front convex column and the rear convex column. The guide wheel is placed on the In the groove, it can move in the groove. The main features of the annular double-piston engine of the present invention are: good heat dissipation effect, which can simplify the water cooling system or the air cooling system; reducer.

Description

Ring twin-piston engine

technical field

The invention belongs to an annular double-piston engine.

Background technique

At present, piston aeroengines are still widely used in small and medium-sized aircraft, especially as power devices for general aviation. With the continuous development of aircraft design and manufacturing technology, higher requirements are put forward for its power plant. However, most of the current piston-type aero-engines use water-cooling systems and reducers to decelerate, which will inevitably increase the weight of the engine and reduce the power-to-weight ratio of the engine, thereby reducing the economy of the engine. In the field of aviation technology that "strives for every gram of weight reduction", every gram of weight reduction is as precious as gold.

Contents of the invention

The object of the present invention is to provide a ring piston engine with compact structure, simple manufacture, stable operation, good scattering performance and large torque generated by the piston working.

The annular dual-piston engine of the present invention comprises a housing, a front end cover, a rear end cover, a front piston, a rear piston, and a main shaft. The body, the rear end cover and the rear piston form the combustion chamber of the rear cylinder. There are four guide grooves in the middle of the housing. The front piston and the rear piston are connected through a connecting piece. In the guide groove, and can move left and right in the guide groove, the main shaft runs through the entire shell, and is at the central axis position, the main shaft has a convex column inside the shell, and the convex post has a sinusoidal groove along the side of the cylinder , there are two peaks and valleys on it, and the groove divides the convex column into the front convex column and the rear convex column. The whole body composed of the front convex column and the rear convex column is used as the reducer of the engine. Movement in the groove pushes the main shaft to generate torque, and the front cylinder compression chamber communicates with the rear cylinder combustion chamber through the central through hole of the main shaft or the outer tube of the housing.

In the annular double-piston engine of the present invention, gas is burned in the combustion chamber of the rear cylinder, which pushes the rear piston to move forward, thereby driving the front piston to compress the gas in the compression chamber of the front cylinder. At the same time, the guide wheel moves in the curved groove to make the main shaft generate Torque, the piston goes back and forth, and the main shaft rotates half a circle, so that the main shaft torque is very large, and the gas compressed by the front piston can flow to the rear cylinder combustion chamber through the through hole in the center of the main shaft or the outer tube of the housing, providing compression for the rear cylinder combustion chamber gas.

The main features of the annular double-piston engine of the present invention are: 1. good heat dissipation effect, which can simplify the water cooling system or air cooling system; 2. compact structure and small number of parts; 3. large torque and low speed. reducer, no additional reducer is required.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

An annular double-piston engine comprises a housing 2, a front end cover 15, a rear end cover 7, a front piston 13, a rear piston 6, a main shaft 1, the housing 2 is a circular cylinder, the housing 2 and the front end cover 15, the front The piston 13 constitutes the front cylinder compression chamber 14, the housing 2, the rear end cover 7, and the rear piston 6 constitute the rear cylinder combustion chamber 8, and there are four guide grooves 12 in the middle of the housing 2, through which the front piston 13 and the rear piston 6 pass The connecting piece 4 is connected. The connecting piece 4 is equipped with a guide piece 3 and a guide wheel 5. The guide piece 3 is set in the guide groove 12 and can move left and right in the guide groove 12. The main shaft 1 runs through the entire shell 2 and is in the center. The position of the axis, the main shaft 1 has a convex column inside the housing 2, and the convex column has a sinusoidal groove 10 along the side of the cylinder. There are two peaks and valleys on it, and the groove 10 divides the convex column into the front convex column. 11 and the rear boss 9, the front boss 11 and the rear boss 9 form a whole as the speed reducer of the engine, the guide wheel 5 is placed in the groove 10, can move in the groove 10, pushes the main shaft 1 to generate torque, and the front The cylinder compression chamber 14 communicates with the rear cylinder combustion chamber 8 through the central through hole of the main shaft 1 or the outer pipe of the housing 2 .

After the gas in the combustion chamber 8 of the rear cylinder is burned, the chemical energy is converted into mechanical energy, which drives the rear piston 6 to move, and drives the front piston 13 to compress the gas in the compression chamber 14 of the front cylinder. The movement in the groove 10 pushes the front convex column 11 and the rear convex column 9 to rotate, so that the main shaft 1 generates torque, the front piston 13 moves back and forth, the main shaft 1 rotates half a circle, and the gas compressed by the front piston 13 can pass through the center of the main shaft 1 The through hole or the outer pipe of the housing 2 flows into the rear cylinder combustion chamber 8 to provide compressed gas for the rear cylinder combustion chamber 8 .

Claims (2)

1. An annular dual-piston engine, comprising a housing (2), a front end cover (15), a rear end cover (7), a front piston (13), a rear piston (6), and a main shaft (1), characterized in that: The housing (2) is a circular cylinder, the housing (2), the front end cover (15), and the front piston (13) form the front cylinder pressure chamber (14), and the housing (2) and the rear end cover (7), The rear piston (6) constitutes the rear cylinder combustion chamber (8), and there are four guide grooves (12) in the middle of the housing (2), the front piston (13) and the rear piston (6) are connected by a connecting piece (4) , the connecting piece (4) is equipped with a guide piece (3) and a guide wheel (5), the guide piece (3) is set in the guide groove (12), the main shaft (1) runs through the entire shell (2), and is in the center The position of the axis, the main shaft (1) has a convex column inside the housing (2), on which there is a sinusoidal groove (10) along the side of the cylinder, there are two peaks and valleys on it, the groove (10) The boss is divided into the front boss (11) and the rear boss (9), the guide wheel (5) is placed in the groove (10), the front cylinder compression chamber (14) and the rear cylinder combustion chamber (8) pass through the main shaft (1) The central through hole or the outer tube of the housing (2) communicates. 2. The annular dual-piston engine according to claim 1, characterized in that: the protruding column is provided with a groove (10) which is sinusoidal along the side of the cylinder and has two peaks and valleys in total.

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