CN201288609Y

CN201288609Y - Free piston type rotary power engine

Info

Publication number: CN201288609Y
Application number: CNU2008201801524U
Authority: CN
Inventors: 靳北彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-08-12
Anticipated expiration: 2018-11-28

Abstract

The utility model discloses a free piston type rotation power engine which comprises a free piston type engine, a rotary body and a structural component. The utility model is characterized in that the free piston connector of free piston type engine is connected with the structural component directly or through an elastic connector A through a connector pin roll. The structural component is connected with the pin roll of rotary body directly or through an elastic connector B. The pin roll of rotary body is connected with the rotary body directly or through an elastic connector C. The rotary body is connected with a power shaft. At least one connector selected from the elastic connector A, the elastic connector B and the elastic connector C should be installed. The free piston type rotation power engine of the utility model converts the reciprocating motion of free piston engine to rotating motion. The rotating motion can be used as the power of whole engine and also can be used as the power of air distribution mechanism, cam type high pressure oil pump and other components in clockwise rotation. The free piston type rotation power engine of the utility model has the advantages of simple structure, low cost and excellent adaptability.

Description

Free-piston rotary engine

Technical field

The utility model relates to the free piston engine field.

Background technique

In engine art, so-called free piston engine comprises linear type free piston engine and swing type free piston engine.In recent years, the research and development of free piston engine receives much attention.Advantages such as experiment shows that free piston engine has the efficient height, and pollutant generates few, and cost is low.But free piston engine has also the bottleneck of its development is how efficient reciprocating power output is, is converted into rotating power source reliably and uses.Utilize hydraulic power system or power generation system etc. that free piston engine reciprocatory motion output is changed into rotation or other forms of power source in many researchs though have at present, the efficient of its conversion and cost all need further improvement.In addition, free piston engine can be used as two-stroke formula or four-stroke engine, and comparatively speaking, the four-stroke free piston engine has self-evident advantage than two-stroke free piston engine at aspects such as efficient.But be based on the reciprocating characteristics of free piston engine, when it adopted the four-stroke mode of operation, realization was just very difficult to the control of the distribution device of motor.If can solve distribution and fuel feeding system's needed timing rotating power source problems such as (diesel engines) of four-stroke free piston engine, can promote the commercialization of four-stroke free piston engine.Some researchs about the four-stroke free piston engine are arranged at present, as world patent WO2007/059565 etc., but the solution of the timing power source of cammingly high pressure oil pump when all not having to propose to use about the distribution device of four-stroke free piston engine and as diesel engine.Need to invent a kind of that can be used as rotating power source or to have at least can be the four-stroke distribution device of himself and the motor that rotation timing power source is provided of cammingly high pressure oil pump for this reason.

Summary of the invention

Free piston engine described in the utility model is meant linear type free piston engine, oscillating piston engine, pendulum piston type rotor engine, arc cylinder rotary motor and arc cylinder oscillating piston engine.This class motor has common characteristic, and piston just has moment when the blast stroke begins, and the systems such as distribution device that do not have can be used for to four stroke engine carry out the rotating power source that timing is controlled.So-called oscillating piston engine is meant that piston swings in cylinder, form volume-variation, and the motor that constitutes, the piston of this kind motor and cylinder are not made circular movement; So-called pendulum piston type rotor engine is meant identically with the oscillating piston engine structure, but piston is also made circular movement in swing; The structure of arc cylinder oscillating piston engine and arc cylinder rotary motor is different with the structure of oscillating piston engine and pendulum piston type rotor engine, so-called arc cylinder oscillating piston engine is meant that the center line of cylinder is made as arc, the section of cylinder is made as circular or non-circular, the piston link of piston is located at outside the combustion chamber sealing section of cylinder, class in cylinder and the piston is made as fixed motor, if the center of circle that cylinder and piston are made as with described cylinder axis camber line is center of circle rotation and relative swing type, then constitute so-called arc cylinder rotary motor.Oscillating piston engine and arc cylinder oscillating piston engine all have two oscillation systems separately.

As everyone knows, want to produce the four-stroke free piston engine and just must solve the needed rotating power source that can be used as timing control of its distribution device.The scheme that present reciprocatory motion with free piston engine converts rotating power source to has various ways, as hydraulic type, electrodynamic type and curved shaft type, but preceding two kinds of schemes can not be as distribution device and the needed rotating power source of cammingly high pressure oil pump to the four-stroke free piston engine, because there is not fixing timing relation, then a kind of scheme is traditional curved shaft type, the sharpest edges of free-piston can't be embodied, as broad as long basically with traditional Reciprocating engine, therefore use curved shaft type to there is no too big meaning.Therefore just need invention efficiently a kind of, the motor of the rotation timing power source of distribution device that can be used as the four-stroke free piston engine that applicability is strong and cammingly high pressure oil pump.

The utility model discloses a kind of free-piston rotary engine for this reason, comprising: free piston engine, solid of rotation, structural member its objective is such realization:

The free-piston link of described free piston engine directly or through Flexible Connector A is connected with described structural member through the link bearing pin, described structural member directly or through Flexible Connector B is connected with the solid of rotation bearing pin, described solid of rotation bearing pin directly or through Flexible Connector C is connected with described solid of rotation, described solid of rotation is connected with line shaft, described Flexible Connector A must be provided with one among described Flexible Connector B and the described Flexible Connector C at least.

Structural member, solid of rotation bearing pin, solid of rotation and Flexible Connector A and/or Flexible Connector B and/or Flexible Connector C have promptly constituted the elasticity connecting rod.The bearing support of the line shaft of described elasticity connecting rod is located on the cylinder body of described free piston engine or on the body; The link bearing pin of described elasticity connecting rod is located on the oscillation system in two oscillation systems of oscillating piston engine, and the bearing support of the line shaft of described elasticity connecting rod is located on another oscillation system in two oscillation systems of oscillating piston engine.

Described Flexible Connector A is made as by pretensioned spring A and pretensioned spring B constitutional formula.

Described Flexible Connector B is made as by pretensioned spring A and pretensioned spring B constitutional formula.

Described Flexible Connector C is made as by pretensioned spring A and pretensioned spring B constitutional formula.

The utility model is by described Flexible Connector A, described Flexible Connector B and described Flexible Connector C are provided with separately or jointly, make reciprocatory motion to convert to and rotatablely move, and don't be same as of the motion of traditional crank linkage mechanism in place, dead center position limited piston by the timing relation.Though described Flexible Connector A, described Flexible Connector B and described Flexible Connector C exist the consumption of energy and the wearing and tearing of part in described free-piston rotary engine, but the degree of its consumption and wearing and tearing be on the power that satisfies motor output and the basis in working life in the scope that can bear.Line shaft described in the utility model can be as the pto of whole motor, also can be only need be as control distribution device and cammingly high pressure oil pump and other as the pto of timing rotating power, and most power outputs of described free-piston rotary engine remain the form output with reciprocatory motion.

Solid of rotation described in the utility model can be made as rod-type or flywheel-type, the also work requirements that can mate motor by the rotary inertia of adjusting solid of rotation, make the operation of described motor more steady, can also the flywheel of the solid of rotation of suitable rotary inertia as whole described free-piston rotary engine will be had, when described free-piston rotary engine starts, starting motor can be made as at first rotary driving body, and then the free-piston that drives described free-piston rotary engine moves back and forth and reaches the purpose of engine start.

Line shaft described in the utility model can pass through gear, Timing Belt and timing chain etc. are connected with the parts that need timing to drive, as camshaft etc., realize distribution device to motor, cammingly high pressure oil pump (diesel engine) or other need be as the drivings of the power source of timing rotating power.

Described free-piston rotary engine in the utility model can be made as the stroke free style, stroke limiting formula or load responding formula free-piston rotating power motor.The stroke free style is meant that the stop at the stroke of free-piston rotating power motor and two ends is unrestricted; The stroke limiting formula is meant that by hydraulic type mechanical type or electromagnetic type device for limiting are with the stroke limiting of piston; The load responding formula is meant the stroke (air displacement) and the controllable formula of compression ratio while of free-piston rotating power motor.

The piston trajectory of described free-piston rotary engine can be made as lineal shape or circular arc.

This structure of the present utility model has realized with valve linear type free piston engine, oscillating piston engine, pendulum piston type rotor engine, arc cylinder rotary motor and arc cylinder oscillating piston engine being carried out distribution, avoided present piston lubrication to come it is lubricated, thereby further improved the feature of environmental protection by the mode that in fuel oil, adds machine oil to this five classes motor.

The utility model has following useful effect: described free-piston rotary engine is simple in structure, efficient height, volume are little, low cost of manufacture, applicable performance are good, can more efficient, realize the distribution device of four-stroke free piston engine or other are needed the driving of the power source of timing rotating power reliably.

Description of drawings

Fig. 1 is the example structure schematic representation that the utility model piston link is connected with structural member through Flexible Connector A

Fig. 2 embodiment's that to be the utility model structural member be connected with rotary pin shaft through Flexible Connector B structural representation

Fig. 3 is the example structure schematic representation that the utility model solid of rotation bearing pin is connected with solid of rotation through Flexible Connector C

Fig. 4 is that the utility model piston trajectory is the example structure schematic representation of circular arc

Fig. 5 is the example structure schematic representation of the utility model arc cylinder pendulum piston type

Fig. 6 is the three-dimensional structure schematic representation of Fig. 2

Embodiment

Accompanying drawing number

1. free piston engine 2. solid of rotation 3. structural members

4. free-piston link 51. link bearing pins 52. solid of rotation bearing pins

61. Flexible Connector A 62. Flexible Connector B 63. Flexible Connector C

7. line shaft 81. pretensioned spring A 82. pretensioned spring B

Please refer to Fig. 1,2,3,4, free-piston rotary engine shown in 5 and 6, comprise: free piston engine 1, solid of rotation 2, structural member 3, the free-piston link 4 of described free piston engine 1 directly or through Flexible Connector A61 is connected with described structural member 3 through link bearing pin 51, described structural member 3 directly or through Flexible Connector B62 is connected with solid of rotation bearing pin 52, described solid of rotation bearing pin 52 directly or through Flexible Connector C63 is connected with described solid of rotation 2, described solid of rotation 2 is connected with line shaft 7, described Flexible Connector A must be provided with one among described Flexible Connector B and the described Flexible Connector C at least.

The free-piston link of described free piston engine is connected the to-and-fro motion that makes free-piston and converts to by rotatablely moving that line shaft 7 is outwards exported with the elasticity connecting rod.The part of this rotating power can be used as control distribution device and cammingly high pressure oil pump and other need be as the power source of timing rotating power.

Please refer to free-piston rotary engine shown in Figure 1, described Flexible Connector A is made as by pretensioned spring A81 and pretensioned spring B82 constitutional formula.

Please refer to free-piston rotary engine shown in Figure 2, described Flexible Connector B is made as by pretensioned spring A81 and pretensioned spring B82 constitutional formula.

Please refer to free-piston rotary engine shown in Figure 3, described Flexible Connector C is made as by pretensioned spring A81 and pretensioned spring B82 constitutional formula.

Please refer to free-piston rotary engine shown in Figure 4, the movement locus of engine piston is a circular arc.

Please refer to free-piston rotary engine shown in Figure 5, the link bearing pin of described elasticity connecting rod is located on the oscillation system in two oscillation systems of oscillating piston engine, and the bearing support of the line shaft of described elasticity connecting rod is located on another oscillation system in two oscillation systems of oscillating piston engine.

Claims

1. free-piston rotary engine, comprise: free piston engine (1), solid of rotation (2), structural member (3), it is characterized in that: the free-piston link (4) of described free piston engine (1) directly or through Flexible Connector A (61) is connected with described structural member (3) through link bearing pin (51), described structural member (3) directly or through Flexible Connector B (62) is connected with solid of rotation bearing pin (52), described solid of rotation bearing pin (52) directly or through Flexible Connector C (63) is connected with described solid of rotation (2), described solid of rotation (2) is connected with line shaft (7), described Flexible Connector A must be provided with one among described Flexible Connector B and the described Flexible Connector C at least.

2. free-piston rotary engine according to claim 1, it is characterized in that: described Flexible Connector A (61) is made as by pretensioned spring A (81) and pretensioned spring B (82) constitutional formula.

3. free-piston rotary engine according to claim 1, it is characterized in that: described Flexible Connector B (62) is made as by pretensioned spring A (81) and pretensioned spring B (82) constitutional formula.

4. free-piston rotary engine according to claim 1, it is characterized in that: described Flexible Connector C (63) is made as by pretensioned spring A (81) and pretensioned spring B (82) constitutional formula.