CN201125764Y

CN201125764Y - Small-sized all-purpose petrol engine

Info

Publication number: CN201125764Y
Application number: CNU2007203028447U
Authority: CN
Inventors: 胡济荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-10-01
Anticipated expiration: 2017-12-07

Abstract

The utility model discloses a minitype all-purpose gasoline engine, including a cylinder body assembly (2), a cylinder cover assembly (15), a left and a right crankshaft cases (3, 31), a right crankcase cover (32), a crankshaft assembly (4), a connecting rod (12), a piston (13), a hand power starting device, a generator (7), a muffler (5), an empty filter (29), a cooling fan (9), wherein the bottom of the right crankshaft case (31) is provided with an oil outlet with a motor oil filter unit therein, which includes a filter core (34), a filter core spring (23) and a filter cover (33). The filter cover (33) is fixed on the oil outlet and compresses the filter core (34) through the filter core spring (23), while the top of the filter core (34) is connected with the oil inlet, with the filtering body communicated with the oil return duct. After adopting the structure, the engine overcomes the defect of the traditional minitype gasoline engine, such as large replacing difficulty, bad lubricating effect, high oil consumption, bad reliability, short durability and large volume etc.

Description

Small utility gasoline engine

Technical field

The utility model relates to a kind of petrol engine, particularly a kind of small utility gasoline engine.

Background technique

The problem that the general gasoline engines of prior art, the particularly discharge capacity small utility gasoline engine more than 100ml in use mainly exists has:

One, existing small utility gasoline engine machine oil fuel outlet operated by rotary motion covers at right crankcase, and this position not only influences the installation of generator, and operation is very difficult, and makes old machine oil stain the generator internal surface easily; Lubrication system does not have the machine oil filtering function, and lubrication effect is poor.

Two, existing small utility gasoline engine generally by splash, the mode of mist of oil is lubricated, cause a lot of lubricant housings can not obtain sufficient lubrication, mist of oil can not fully condense into oil droplet in the crankcase body of the left and right sides, the part mist of oil is run off from spiracle, causes the machine oil loss high.

Three, the firing chamber on the existing small utility gasoline engine cylinder head assembly is not carried out processing usually behind casting, volume error is bigger, can not accurately control compression ratio, its inlet and outlet passage is generally the straight air flue of die cast, there is right angle channel, cause burning insufficient, inlet and outlet efficient is low, and volumetric efficiency is little.

Four, existing small utility gasoline engine does not all possess electric start-up function, though its discharge capacity is little, it is also very convenient to pull starting, to many requirements automatically the occasion of control just can not use, limited the use field of small utility gasoline engine.

Five, existing small utility gasoline engine generally adopts conventional empty filter, is directly installed on the Carburetor, and this structure is occupied bigger space, makes machine volume be difficult for accomplishing miniaturization.

For this reason, the research and development that many institutes, manufacturer and knowledgeable people have carried out, but do not have the ideal method to solve the problems referred to above so far as yet.

Summary of the invention

For solving the problems referred to above that existing small utility gasoline engine exists, the purpose of this utility model provides that a kind of simple and reasonable, machine oil transposing convenience, high lubricating effect, machine oil loss are little, reliability and good endurance, small utility gasoline engine that volume is little.

The technological scheme that its technical problem that solves the utility model adopts, it comprises cylinder body assembly, cylinder head assembly, left and right sides crankcase body, right crankcase cover, crank assemblby, connecting rod, piston, pulls starting arrangement, generator, silencing apparatus, empty filter, cooling fan, the bottom of described right crankcase is provided with fuel outlet, be provided with the machine oil filtrating equipment in the fuel outlet, this device comprises filter core, filter element spring and filter lid, the filter lid is fixed on the fuel outlet and by filter element spring and compresses filter core, the filter core top links to each other with oil input channel, and its filter body portion communicates with back oil road.

Be provided with oil pump in the described right crankcase, oil pump is connected with crank assemblby by the oil pump chain, and the import and the oil input channel of oil pump join, and the oil road on its outlet and the right crankcase joins.

Firing chamber on the described cylinder head assembly is a spherical combustion chamber, intake duct that is connected with the firing chamber and the transition of air outlet flue continous curve.

Described right crankcase covers and is provided with electric starting device, this device comprises actuating motor, starting one-way element assembly, starting gear dish, actuating motor is fixed on right crankcase and covers, the starting gear dish is fixed on the rotor of generator, and actuating motor is by starting one-way element assembly and the engagement of starting gear dish.

The sidewall that described empty filter is close to left and right sides crankcase body is installed on the Carburetor, be provided with filter core in the empty filter, the suction port of empty filter is positioned at its bottom, and the suction port of empty filter bottom communicates with the intake duct of cylinder head assembly through filter core, Carburetor aditus laryngis, thermal baffle air flue.

After adopting said structure, mainly contain following advantage: the one, oil lubricating is effective, more drains the oil thoroughly during change engine oil, convenient, does not influence the installation of generator; When being used in particular for frequency conversion generator, fuel outlet can be located at outside the machine, is convenient to operation, exempts to unpack, and is not subject to oil pollution, neat and tidy in the case.The 2nd, realize the lubricating system that pressure splashes, accelerated lubricated speed, improved each position pearl lubrication effect, reduce the machine oil loss, and improve the durability of complete machine.The 3rd, sphere is processed in the firing chamber, the continous curve transition of inlet and outlet road, and the combustion chamber volume unanimity can accurately be controlled compression ratio, guarantees that mixed gas fully burns, and reduces inlet and outlet road resistance.The 4th, increase electric start-up function after, make it can be used for fields such as automatic control, miniature hybrid power machine.The 5th, the airintake direction of the empty filter of change makes the sky filter be close to body, and structure is more compact, realizes the miniaturization of petrol engine volume.

Description of drawings

Fig. 1 is a complete machine structure schematic representation of the present utility model.

Fig. 2 is the A-A partial sectional view of Fig. 1.

Fig. 3 is the B-B partial sectional view of Fig. 2.

Fig. 4 is the C-C partial sectional view of Fig. 2.

Embodiment

Fig. 1 is the specific embodiments of the utility model small utility gasoline engine to shown in Figure 4.It comprises cylinder body assembly 2, cylinder head assembly 15, valve mechanism cover 16, left and right

sides crankcase body

3,31, right crankcase cover 32, crank assemblby 4, connecting rod 12, piston 13, pulls starting arrangement, generator 7, silencing apparatus 5, empty filter 29, cooling fan 9, fan spiral case 11, pulling starting arrangement is made up of starting hub 8 and hand pull starting-up dish 10, left and right

sides crankcase body

3,31 cooperatively interacts, crank assemblby 4 is installed its inside, and right crankcase cover 32 covers on right crankcase 31; Above left and right

sides crankcase body

3,31, assemble cylinder body assembly 2, cylinder head assembly 15, valve mechanism cover 16 successively; The front and back of cylinder body assembly 2 and cylinder head assembly 15 are fixed with wind scooper 28; Silencing apparatus 5 is installed in the left side of left crankcase 3; Hand pull starting-up dish 10 is installed on the fan spiral case 11, and starting hub 8, cooling fan 9 are assemblied on the rotor of generator 7, and generator 7 is installed on the crank assemblby 4; The bottom of described right crankcase 31 is provided with fuel outlet, be provided with the machine oil filtrating equipment in the fuel outlet, this device comprises that filter core 34, filter element spring 23 and filter cover 33, filter cover 33 and is fixed on the fuel outlet and by filter element spring 23 and compresses filter core 34, screw off to filter to cover 33 and can drain the oil, and can take off filter element spring 23, filter core 34 cleans, filter core 34 tops link to each other with oil input channel, its filter body portion communicates with back oil road, and this device is positioned at the minimum point of petrol engine, and it is clean, thorough therefore to drain the oil; Be provided with oil pump 6 in the described right crankcase 31, oil pump 6 is connected with crank assemblby 4 by oil pump chain 35, the import and the oil input channel of oil pump 6 join, oil road on its outlet and the right crankcase 31 joins, during work, oil pump 6 is driven by crank assemblby 4, and machine oil is advanced into oil pump 6 on filter core 34, the lubricant housings of lubricated each workpiece after oil pump 6 pressurizations.

Firing chamber on the described cylinder head assembly 15 is processed as spherical combustion chamber, and compression ratio can be accurately controlled in intake duct 26 that is connected with the firing chamber and air outlet flue 27 continous curve transition, guarantees that mixed gas fully burns, and reduces inlet and outlet road resistance.

Described right crankcase cover 32 is provided with electric starting device, this device comprises actuating motor 20, starting one-way element assembly 21, starting gear dish 22, actuating motor 20 is fixed on the right crankcase cover 32, starting gear dish 22 is fixed on the rotor of generator 7, and actuating motor 20 is by starting one-

way element assembly

21 and 22 engagements of starting gear dish.

The sidewall that described empty filter 29 is close to left and right

sides crankcase body

3,31 is installed on the Carburetor 24, be provided with filter core 30 in the empty filter 29, the suction port of empty filter 29 is positioned at its bottom, the suction port of empty filter 29 bottoms communicates with the intake duct of cylinder head assembly 15 through filter core 30, Carburetor 24 aditus laryngis, thermal baffle 25 air flues, make full use of near the space of crankcase, make the petrol engine volume realize miniaturization.

The utility model working principle is as follows: when electricity starts, actuating motor 20 drives starting one-way element assembly 21 and rotates, the starting gear of starting one-way element assembly 21 stretch out drive starting gear dish 22 and with its fixing generator 7 rotor rotation, by generator 7 rotor banding dynamic crankshaft assemblies 4 rotary works, crank assemblby 4 drives timing sprocket 1 by timing chain 18 and drives valve cam 19 work, valve cam 19 drives rocking arm 17 and opens and closes by characteristics of motion control valve, finishes the inlet and outlet process of petrol engine; The control ignition mechanism makes spark plug 14 igniting in the budc of compression stroke during the rotation of generator 7 rotors, the mixed gas that ignition combustion is indoor, it is descending that pressure of explosion promotes piston 13, and drive crank assemblby 4 gyroscopic output power by connecting rod 12, thereby make petrol engine begin periodic duty.

When hand pull starting-up, pulling pulls starter panel 10, pull starter panel 10 and drive 8 rotations of starting hub, because moving starting hub 8, generator 7 rotors and crank assemblby 4 are fixing, therefore generator 7 rotors, crank assemblby 4 are with 8 rotations of starting hub, subsequent working principle is identical with the electricity startup, no longer repeats at this.

Claims

1, a kind of small utility gasoline engine, comprise cylinder body assembly (2), cylinder head assembly (15), left and right sides crankcase body (3,31), right crankcase cover (32), crank assemblby (4), connecting rod (12), piston (13), pull starting arrangement, generator (7), silencing apparatus (5), empty filter (29), cooling fan (9), it is characterized in that: the bottom of described right crankcase (31) is provided with fuel outlet, be provided with the machine oil filtrating equipment in the fuel outlet, this device comprises filter core (34), filter element spring (23) and filter lid (33), filter lid (33) is fixed on the fuel outlet and compresses filter core (34) by filter element spring (23), filter core (34) top links to each other with oil input channel, and its filter body portion communicates with back oil road.

2, multipurpose petrol engine according to claim 1, it is characterized in that: be provided with oil pump (6) in the described right crankcase (31), oil pump (6) is connected with crank assemblby (4) by oil pump chain (35), the import and the oil input channel of oil pump (6) join, and the oil road on its outlet and the right crankcase (31) joins.

3, small utility gasoline engine according to claim 1 and 2 is characterized in that: the firing chamber on the described cylinder head assembly (15) is a spherical combustion chamber, intake duct that is connected with the firing chamber (26) and air outlet flue (27) continous curve transition.

4, small utility gasoline engine according to claim 3, it is characterized in that: described right crankcase cover (32) is provided with electric starting device, this device comprises actuating motor (20), starting one-way element assembly (21), starting gear dish (22), actuating motor (20) is fixed on the right crankcase cover (32), starting gear dish (22) is fixed on the rotor of generator (7), and actuating motor (20) is by starting one-way element assembly (21) and starting gear dish (22) engagement.

5, small utility gasoline engine according to claim 4, it is characterized in that: the sidewall that described empty filter (29) is close to left and right sides crankcase body (3,31) is installed on the Carburetor (24), be provided with filter core (30) in the empty filter (29), the suction port of empty filter (29) is positioned at its bottom, and the suction port of empty filter (29) bottom communicates with the intake duct of cylinder head assembly (15) through filter core (30), Carburetor (24) aditus laryngis, thermal baffle (25) air flue.