CN1011724B - E-shaped rotary polygonal piston engine - Google Patents

Abstract

The present invention relates to an improvement of a rotary polygonal piston engine. The present invention has the method that a sealing strip is arranged at the point of a short shaft of a cylinder body profile, the original combustion chamber is divided into two branch chambers when the compression travel ends, the back branch chamber has a row of gas valves and can be used for exhausting compressed air, and the front branch chamber is provided with a combustion chamber pit. Because the combustion chamber is arranged in a deviating way, the acting force line of combustion gases is deviated from the center of a triangular piston, and a rotating power arm is formed for a main shaft. The combustion gases can be converted into output torque when the explosion pressure is high. Simultaneously, an axial sealing strip of the triangular piston is tilted into an angle in a side way, and the corrugation wear of the cylinder body profile is eliminated. The present invention can obviously reduce the fuel consumption rate of the engine.

Description

E-shaped rotary polygonal piston engine

The invention belongs to the internal-combustion engine engineering technical field, be specifically related to improvement the rotary polygonal piston engine structural design.

Rotary polygonal piston engine is a kind of new work engine that occurs in recent years.Because it has replaced the to-and-fro motion of column type piston with rotatablely moving of trigonometric expression piston, thereby has many advantages such as simple in structure, that volume is little, power is big, running is steady, noise is low, maintenance is easy.It is the internal combustion engine that is hopeful to replace traditional reciprocating-piston engine most.The major technique feature of rotary polygonal piston engine can be referring to " rotary polygonal piston engine " of Chinese science publishing house publication.(nineteen eighty-two publication).

Existing rotary polygonal piston engine also exists some shortcomings.Rotate the arm of force as: the triangle piston in the rotary polygonal piston engine relative to main shaft effective and go together the compound piston engine, along with the rotation of engine spindle changes.At rotary polygonal piston engine burning expansion space stroke, when the pressure of explosion that is produced in air burning back reached maximum, triangle piston was very little relative to effective arm of force that rotates of main shaft; When effectively the rotation arm of force reached maximum, the burning pressure of explosion had reduced a lot.The pressure of explosion that so just makes air burning back be produced can not produce effective output torque to greatest extent.Secondly, in rotary polygonal piston engine, be installed in the apex seal of three-apexed rotor piston drift angle for preventing to leak gas between the adjacent working room, variation along with draught head between the adjacent working room, in the sealing film trap, swing back and forth, when swing, because the angle between the center line of apex-seal groove and the tangent line at diaphragm seal and cylinder body profile point of contact place is greater than 90 degree, thereby make diaphragm seal in pendulum fortune process, produce the tendency that breaks away from the cylinder body profile, and cause the gas leakage between the adjacent working room and the wavy wearing and tearing of cylinder body profile.

Purpose of the present invention is by improving the structural design that three-apexed rotor starts, and improves conversion efficiency and overcomes the wavy wearing and tearing of cylinder body profile.

The concrete grammar of realizing this purpose is, at the existing three-apexed rotor piston that includes, in the rotary polygonal piston engine of component such as the outer trochoid profile cylinder body of two arcs, cylinder end caps and main shaft, the combustion recess of three-apexed rotor piston cambered surface central authorities will be located at originally, change the front side (along sense of rotation) that is located at the three-apexed rotor piston,, an apex seal is installed at cylinder body profile minor axis place, in compression stroke at the end, former firing chamber is divided into former and later two locellus.Back locellus in former firing chamber is installed an outlet valve, pressurized air can be entered the preceding locellus of gas cylinder (being used for Brake System etc.) or the former firing chamber of atmosphere still as the firing chamber.When the air burning expansion, owing to setover in the firing chamber, the pressure of explosion that air burning back is produced acts on the line of action of the making a concerted effort center by the three-apexed rotor piston no longer on the three-apexed rotor cambered surface, but depart from three-apexed rotor piston one segment distance along the sense of rotation of three-apexed rotor piston, form the arm of force that rotates than length relative to the alignment of shafts.Like this pressure of explosion that produces in air burning back very high in, it makes a concerted effort just can pass through this rotation arm of force, is converted to effective output torque.And at major part burning expansion space stroke, the formed new rotation arm of force is all long than the original rotation arm of force owing to setover in the firing chamber.

The method that solves the wavy wearing and tearing of cylinder body profile is, with the original vertical apex seal that faces toward the three-apexed rotor piston of installing at the three-apexed rotor center, against sense of rotation inclination 10～30 degree of three-apexed rotor piston, make that the angle between the tangent line at diaphragm seal groove center line and diaphragm seal and cylinder body profile point of contact place is always spent less than 90.Produce tendency and the gap that breaks away from the cylinder body profile when so just having avoided apex seal in the sealing film trap, to swing, apex seal is pressed on the cylinder body profile more tightly, thereby has avoided gas leakage between the adjacent working room and the wavy wearing and tearing on the cylinder body profile.

Accompanying drawing 1 is the structural representation of firing chamber offset rotary polygonal piston engine.1 cylinder body, 2 outlet valves, 3 apex seals, 4 seal rings, 5 three-apexed rotor pistons, 6 cylinder body apex seals, 7 spark plugs, 8 combustion recesses, 9 injection valves, 10 main shafts among the figure.

Accompanying drawing 2 is rotation arm of force schematic representation that firing chamber offset rotary polygonal piston engine forms when the burning expansion space stroke begins owing to setover in the firing chamber.Among the figure: 11 alignments of shafts, 12 three-apexed rotor piston centers, 13 former firing chamber center lines, 14 firing chambers biasing after-combustion gas pressure force action line, 15 offset combustion gas vertical face schematic lines.Air vent on the 16 cylinder body profiles.

When accompanying drawing 3 is three-apexed rotor piston radial sealing film trap center lines by three-apexed rotor piston center, apex seal is when swing, the schematic representation that breaks away from the cylinder body profile is among the figure: the angle between 17 apex-seal groove center lines, 18 diaphragm seals and cylinder body profile point of contact place tangent line, 19 cylinder body profiles, 20 diaphragm seal groove center lines and diaphragm seal and the cylinder body profile point of contact place tangent line.

After accompanying drawing 4 was the inclination of three-apexed rotor piston radial sealing film trap, apex seal was in when swing, the schematic representation of hold-down cylinder build face.Among the figure: the angle between the diaphragm seal groove center line after 21 inclinations, 22 diaphragm seal groove center lines and diaphragm seal and the cylinder body profile point of contact place tangent line.

The invention will be further described in conjunction with the accompanying drawings.

As shown in Figure 1, be arranged on the combustion recess 8 of three-apexed rotor piston 5 central authorities originally, change the front side that is located at the three-apexed rotor piston now.At the apex seal 6 of cylinder body profile minor axis, end in compression stroke, former firing chamber is divided into former and later two locellus.Locellus is equipped with outlet valve 2 in the back, ends in compression stroke, and pressurized air is entered gas cylinder, and its preceding locellus still is the firing chamber.Firing chamber offset rotary polygonal piston engine can be installed injection fuel feeding-spark ignitor system.End in compression stroke, by injection valve 9 pulverized fuel is sprayed into firing chamber, the pressured high-temperature gas of ending that contracts is lighted, and also can add a spark plug 7 and light.By accompanying drawing 2 as seen, because the firing chamber biasing, when the burning expansion space stroke was incipient, combustion-gas pressure just produced an output torque to the alignment of shafts.

As shown in Figure 3, because the angle at the center line of the apex-seal groove of former three-apexed rotor piston and diaphragm seal and cylinder body profile point of contact place greater than 90 degree, therefore when diaphragm seal is swung, produces one and breaks away from the tendency and the gap of cylinder body profile.As shown in Figure 4, after angle of apex-seal groove inclination with the three-apexed rotor piston, when diaphragm seal was swung, because the angle between diaphragm seal groove center line and diaphragm seal and the cylinder body profile point of contact place tangent line is spent less than 90, diaphragm seal was pressed on the cylinder body profile more tightly.The wavy wearing and tearing of gas leakage and cylinder body profile have been avoided causing.

Adopt the project organization of firing chamber offset rotary polygonal piston engine, compare with traditional rotary polygonal piston engine, though owing to reduce combustion chamber volume, reduced the air demand of each work cycle, but because firing chamber biasing, formed the new rotation arm of force, this rotate arm of force most of the time of burning expansion space stroke particularly in the pressure of explosion maximum of air burning back, more many than original increase, so just under the identical situation of combustion air fuel mixture quantity, increase the output torque of motor, improved the burning conversion efficiency of air.Reduce fuel consume about 50%, adopted the present invention can also reduce the gas leakage of rotary polygonal piston engine simultaneously, eliminated the wavy wearing and tearing of cylinder body profile substantially.For the wide popularization and application of rotary polygonal piston engine on industry, agricultural and national defence created condition.

Claims (1)

1, a kind of firing chamber offset rotary polygonal piston engine, comprise the three-apexed rotor piston, the outer trochoid profile cylinder body of two arcs, cylinder end caps and main shaft, it is characterized in that: combustion recess is located at the front side (conrotatory veer) of three-apexed rotor piston, an apex seal is installed at cylinder body profile minor axis place, end in compression stroke, before former firing chamber is divided into, latter two locellus, locellus is provided with an outlet valve in the back, pressurized air is entered gas cylinder, preceding locellus still is the firing chamber, simultaneously with sense of rotation inclination 10～30 degree of the apex seal on the three-apexed rotor piston against the three-apexed rotor piston.

Images