CN201318213Y

CN201318213Y - Double-rotation four-cycle piston type internal combustion engine

Info

Publication number: CN201318213Y
Application number: CNU2008202234723U
Authority: CN
Inventors: 杜明辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-17
Filing date: 2008-12-17
Publication date: 2009-09-30
Anticipated expiration: 2018-12-17

Abstract

A double-rotation four-cycle piston type internal combustion engine belongs to the technical field of internal combustion engines, in particular to a rotary piston type internal combustion engine. The double-rotation four-cycle piston type internal combustion engine comprises a barrel type cylinder, an cylinder end cap, an engine shaft and a piston, wherein the engine shaft is coaxial with the barrel type cylinder, two piston shaft sleeves are mounted on the engine shaft in the barrel type cylinder via a bearing, and two pairs of pistons are assembled in the two piston shaft sleeves respectively. The technical scheme of the utility model includes respectively mounting first unidirectional rotation bearings among the two piston shaft sleeves and the cylinder end cap, respectively casing cam bearing bushings at two ends of each piston shaft sleeve, and arranging second unidirectional rotation bearings in the cam bearing bushings. The utility model resolves problems of piston inversion and speed differential of the two pairs of pistons during working well, and the internal combustion engine is simpler in structure, smaller in volume and lighter in weight.

Description

The double-rotation four-cycle piston type internal-combustion engine

(1) technical field:

The double-rotation four-cycle piston type internal-combustion engine belongs to technical field of internal combustion engines, particularly rotary piston type internal combustion engine.

(2) background technique:

Internal-combustion engine develops into the circulation rotary piston type internal combustion engine by reciprocating internal combustion engine through technological innovation constantly.This internal-combustion engine generally comprises casing, transmission shaft and piston, and transmission shaft and casing concentric are provided with, two pairs of pistons of suit on the casing intermediate solid drive shaft.Two pairs of pistons are that the axle center rotates by same direction with the transmission shaft, and can relatively rotate, and form four air chambers can changing volume size in casing, can inhale simultaneously, pressure, quick-fried, row's working stroke.This internal-combustion engine is compared with best co-content reciprocating internal combustion engine, and it is big more than 1 times that the power that is produced is wanted, and fuel consumption but equates with reciprocating internal combustion engine, and this internal-combustion engine volume is little, and efficient height, noise are low, and therefore, this internal-combustion engine is the direction that develops.But this internal-combustion engine is in when work, and the rotating speed of piston changes according to different rules respectively, so the space between the piston constantly increases or reduce, and cylinder work volume is partly constantly changing in Reciprocating engine.Will utilize complicated control mechanism to solve the reversing of piston and the speed difference problem of two pairs of pistons like this.Here it is, and the double-rotation four-cycle piston type internal-combustion engine fails to be widely used in one of actual reason.

(3) summary of the invention:

The utility model is exactly at the reversing of existing double-rotation four-cycle piston type internal-combustion engine piston when working and the speed difference problem of two pairs of pistons, thereby provide a kind of new control mechanism to replace original control mechanism, with the reversing of solution piston when working and the speed difference problem of two pairs of pistons, make Structure of Internal-Combustion Engine simpler, volume is littler, weight is lighter.Its technological scheme is as follows:

It comprises barrel-type casing, cylinder end cap, arbor and piston, and arbor and barrel-type casing concentric are provided with, and passes through two piston sleeve of Bearing Installation in barrel-type casing on the arbor, is set with two pairs of pistons on the two-piston axle sleeve.Its key technology is that the first unidirectional swivel bearing is housed respectively between two-piston axle sleeve and cylinder end cap, is set with the camshaft bearing sleeve at the piston sleeve two ends, is provided with the second unidirectional swivel bearing in the camshaft bearing sleeve.

Compared with prior art the beneficial effects of the utility model are:

1, adopts the control mechanism of ripe simple unidirectional swivel bearing substitute structure complexity, easily solve the piston reverses problem;

2, the setting of camshaft bearing sleeve easily solves the speed difference problem of two pairs of pistons;

3, because need not baroque control mechanism, make that the structure of internal-combustion engine is simpler, volume is littler, and weight is lighter;

4, the wherein design of pair of pistons upper limit boss, making has a little space between two pairs of pistons, avoid internal-combustion engine to crash in running, has improved the efficient of internal-combustion engine;

5, special cooling system and the lubrication system that is provided with makes that the cooling effect of internal-combustion engine and lubrication effect are better.

(4) description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the E-E view of Fig. 1;

Fig. 3 is the F-F view of Fig. 2;

Fig. 4 is the utility model cylinder end cap structural representation;

Fig. 5 is the G-G view of Fig. 4;

Fig. 6 is the utility model piston structure schematic representation;

Fig. 7 is the utility model camshaft bearing nested structure schematic representation;

Fig. 8 is the utility model deceleration pressure regulator structural representation;

Fig. 9 is the utility model cylinder working principle schematic representation;

Figure 10, intake process schematic representation when being the work of the utility model cylinder;

Figure 11, compression process schematic representation when being the work of the utility model cylinder;

Figure 12, exhaust process schematic representation when being the work of the utility model cylinder;

Figure 13 is the schematic representation behind the utility model piston A, the B rotation half cycle.

(5) embodiment:

Referring to Fig. 1--Fig. 8, the utility model comprises barrel-type casing 1, cylinder end cap 2, arbor 18 and piston, arbor 18 and barrel-type casing 1 concentric setting are installed two piston sleeve 6 by bearing 15 on the arbor 18 in barrel-type casing 1, be set with two pairs of

pistons

3,4 on two-piston axle sleeve 6.Its key technology is that the first unidirectional swivel bearing 5 is housed respectively between two-piston axle sleeve 6 and cylinder end cap 2, is set with camshaft bearing sleeve 12 at piston sleeve 6 two ends, is provided with the second unidirectional swivel bearing 14 in camshaft bearing sleeve 12.The two pairs of unidirectional swivel bearings 5,14 and arbor 18, piston sleeve 6, camshaft bearing sleeve 12 are the concentric setting, and their sense of rotation is all consistent.Camshaft bearing sleeve 12 is to have cam in the periphery of bearing housing, and pair of pistons is provided with positive stop lug boss 24 therein, is provided with to get rid of oil groove 25 on every pair of piston.On two cylinder end caps 2, by support 9 deceleration pressure regulator 10 is installed respectively, deceleration pressure regulator 10 is to be provided with pressure regulation piece 28 in the upper end of a column, on pressure regulation piece 28, be provided with adjusting nut 29, be provided with plunger 26 in the lower end of column, inner chamber at column is provided with spring 27 between pressure regulation piece 28 and plunger 26, be connected with camshaft bearing sleeve 12 by brake pad 11 in the lower end of plunger 26.The oil groove 23 that on cylinder end cap 2, is provided with bosh 19, oilhole 22 and communicates with oilhole.Outside the first unidirectional swivel bearing 5 and the second unidirectional swivel bearing 14, be respectively equipped with bearing (ball) cover 8,13.On piston sleeve 6, also be respectively equipped with key 7,16.Unidirectional swivel bearing is existing mature technique, does not give unnecessary details at this.

17 is gears among the figure.

Now working principle of the present utility model is described according to the cylinder working state:

When motor did not also start, two pairs of

pistons

3,4 were in free state, this

moment piston

3,4 between because of positive stop lug boss 24 is arranged, make two pairs of pistons remain certain ignition space.When engine start, combustion gas will enter this space with smooth igniting.

Referring to Fig. 9, when spark plug 30 ignition gases break out, A, the O point on the camshaft bearing sleeve surface that the piston sleeve of B piston links to each other just in time is positioned at the position (seeing shown in Figure 7) of brake pad 11, produce pressure between piston A and the D this moment, D piston pressurized is desired to retreat to counter clockwise direction, but the first unidirectional swivel bearing 5 between this piston sleeve and the cylinder end cap 2 can not rotate in the counterclockwise direction, so the D piston can not retreat, A, the swelling pressure that D piston space gas produces force the A piston to rotate to clockwise direction fast, while A, the camshaft bearing sleeve that the piston sleeve of B piston links to each other drives arbor 18 rotations through the second unidirectional swivel bearing 14, and D, the camshaft bearing sleeve that links to each other on the piston sleeve of C piston drives arbor 18 through the second unidirectional swivel bearing 14 and allows rotation in the clockwise direction, so the rotation of arbor is not had influence.Brake pad 11 is crossed in the O point dextrorotation of the camshaft bearing sleeve that links to each other of the piston sleeve of A, B piston in addition, it is minimum that frictional force is reduced to, and the positive rotation direction brake pad 11 of O point of the camshaft bearing sleeve that the piston sleeve of D, C piston links to each other, frictional force increases gradually, D, C piston are obstructed to the clockwise direction rotation, and rotating speed slows down.Here it is utilizes unidirectional rotating machinery and cam mechanism to solve piston reverses and the speed difference problem of two pairs of pistons when work.

Air inlet when Figure 10--Figure 12 is cylinder work, compression, exhaust process, Figure 13 is the situation behind piston A, the B rotation half cycle.

The cooling system of cylinder is seen Fig. 3--Fig. 5: enter cooling water from the water inlet 20 of cylinder end cap, flow to the tank of barrel-type casing, flow out from osculum 21 again, reach the purpose of cooling cylinder through bosh 19.

Lubrication system is seen Fig. 4 and Fig. 6: oilhole 22 is arranged on cylinder end cap, and lubricant oil injects through this, flows into the get rid of oil groove 25 of piston place on piston through oil groove 23 and reaches lubricated purpose.

Claims

1, a kind of double-rotation four-cycle piston type internal-combustion engine, comprise barrel-type casing (1), cylinder end cap (2), arbor (18) and piston, arbor (18) and barrel-type casing (1) concentric setting, arbor (18) is gone up by bearing (15) two piston sleeve (6) is installed in barrel-type casing (1), on two-piston axle sleeve (6), be set with two pairs of pistons (3,4), it is characterized in that between two-piston axle sleeve (6) and cylinder end cap (2), being equipped with respectively the first unidirectional swivel bearing (5), be set with camshaft bearing sleeve (12) at piston sleeve (6) two ends, in camshaft bearing sleeve (12), be provided with the second unidirectional swivel bearing (14).

2,, it is characterized in that camshaft bearing sleeve (12) is to have cam in the periphery of bearing housing according to the described double-rotation four-cycle piston type internal-combustion engine of claim 1.

3,, it is characterized in that pair of pistons is provided with positive stop lug boss (24) therein according to the described double-rotation four-cycle piston type internal-combustion engine of claim 1.

4,, it is characterized in that on every pair of piston, being provided with and get rid of oil groove (25) according to the described double-rotation four-cycle piston type internal-combustion engine of claim 1.

5, according to the described double-rotation four-cycle piston type internal-combustion engine of claim 1, it is characterized in that on two cylinder end caps (2), being separately installed with deceleration pressure regulator (10), deceleration pressure regulator (10) is to be provided with pressure regulation piece (28) in the upper end of a column, be provided with plunger (26) in the lower end of column, be positioned between pressure regulation piece (28) and the plunger (26) at the inner chamber of column and be provided with spring (27), be connected with camshaft bearing sleeve (12) by brake pad (11) in the lower end of plunger (26).

6,, it is characterized in that the oil groove (23) that on cylinder end cap (2), is provided with bosh (19), oilhole (22) and communicates with oilhole according to the described double-rotation four-cycle piston type internal-combustion engine of claim 1.