CN100427749C

CN100427749C - Bottom oil tank type universal gasoline engine

Info

Publication number: CN100427749C
Application number: CNB2006100951924A
Authority: CN
Inventors: 尹明善; 李豫玲; 尤越
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2006-10-11
Filing date: 2006-10-11
Publication date: 2008-10-22
Anticipated expiration: 2026-10-11
Also published as: CN1932279A

Abstract

The present invention discloses a kind of fuel tank lower-mounted type universal gasoline engine. It includes the following several portions: fuel tank, crankcase, crankcase lower cover, crankcase cover and carburetor. Under the crankcase lower cover a support is set, said support is screw-connected with said crankcase lower cover, the described fuel tank is mounted in the space interior between said support and crankcase lower cover, and said fuel tank is communicated with vacuum diaphragm carburetor by means of fuel pipe. Besides, said invention also provides the extensive application range of said gasoline engine.

Description

A kind of bottom oil tank type universal gasoline engine

Technical field

The invention belongs to the technology of gasoline engine field, specifically, relate in particular to a kind of bottom oil tank type universal gasoline engine.

Background technique

At present, the structure of small utility gasoline engine such as Figure 11 and shown in Figure 12 generally are made of parts such as fuel tank 1, crankcase 19, Carburetor 4, empty filter 12 and silencing apparatuss 13.Crankcase 19 has crankcase cover and crankcase cover, connects by bolt between the three; Empty filter 12 and silencing apparatus 13 separations are in the both sides of crankcase 19.Fuel tank 1 is square, is installed in the top of crankcase 19, and its inner gasoline enters under the effect of self gravitation in the Carburetor 4, after the air mixing that enters from empty filter 12, enters work by combustion in the firing chamber, produces power.Because the overall height dimension of existing petrol engine is bigger, can't use in the occasion of setting height(from bottom) limited space systems such as small-sized scooter, thereby the using scope of the general gasoline engines of existing structure is very restricted.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of bottom oil tank type universal gasoline engine that the occasion limited in setting height(from bottom) spaces such as small-sized scooters used of being convenient to.

Technological scheme of the present invention is as follows: a kind of bottom oil tank type universal gasoline engine, comprise fuel tank, crankcase, crankcase cover, crankcase cover and Carburetor, its key is: be arranged side by side first supporting and second supporting below crankcase cover, each supporting is threaded with crankcase cover; Described fuel tank is installed in the space between supporting and the crankcase cover, this fuel tank be shaped as the abnormity that the bottom with described crankcase cover adapts, and communicate with the vacuum diaphragm carburetor by oil pipe; The two side of described fuel tank is provided with hangers, and this hangers stretches in the fuel tank hanging hole in the corresponding supporting, and fuel tank is suspended in the supporting.

The square fuel tank that the present invention will be placed on the crankcase top usually changes bottom that is contained in crankcase cover and the special-shaped fuel tank that becomes with the crankcase cover structure into, and the gasoline in the fuel tank can rely on the suction function of engine air inlet tube to enter in the Carburetor.After improving like this, by rationally utilizing the space, make the structure of petrol engine compact more, effectively reduced the overall height dimension of petrol engine, make the application area of petrol engine wider, even also can install and use in the occasion of setting height(from bottom) limited space systems such as small-sized scooter.When supporting both can be used for using petrol engine was installed on the specific machinery, can be used for fixed oil tank again; Adopts and articulate between fuel tank and the supporting, make the fuel tank fixation, easy accessibility between each parts, fast.

Above-mentioned first supporting comprises and orthogonal floor portion and dogleg section has the supporting mounting hole at two of floor portion the same side that two of floor portion opposite side has the crankcase mounting hole; Have bar shaped fuel tank hanging hole on the described dogleg section.

Above-mentioned second supporting comprises also and orthogonal floor portion and dogleg section has the supporting mounting hole at two of floor portion the same side that the floor portion opposite side has a flange near the position at middle part, has the crankcase mounting hole on this flange; Have two bar shaped fuel tank hanging holes on the described dogleg section side by side.

First supporting and the available iron plate pressing and bending of second supporting, also available foundry goods, it had both solved petrol engine installation question in use, had solved the fixation problem of fuel tank again.

In the lower end of above-mentioned crankcase cover the mouth of draining the oil that communicates with this crankcase cover inside is housed, the described mouth of draining the oil is connected with drain line by pipe clamp, and the outlet port of this drain line is provided with plug.Petrol engine hangs over when using on the unit like this, by drain the oil mouth and drain line can be easily oil change more.

Beneficial effect: the present invention is by being retrofitted to fuel tank the bottom of crankcase cover, and change the shape of fuel tank into abnormity that the bottom with described crankcase cover adapts, effectively reduced the overall height dimension of petrol engine, make the application area of petrol engine wider, it not only can be used as the power of scooter that agricultural such as water pump assembly, sprayer, reaper, sprinkler, rural area machinery and leisure ride instead of walk etc., and can be used as the perfect match power of hand-held or backpack agricultural, rural area machinery.

Description of drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 looks sectional view for the left side of Fig. 1.

Fig. 3 is the rear view of Fig. 1.

Fig. 4 is the structural representation of fuel tank among the present invention.

Fig. 5 is the plan view of Fig. 4.

Fig. 6 is the structural representation of first supporting among the present invention.

Fig. 7 is the plan view of Fig. 6.

Fig. 8 is the structural representation of second supporting among the present invention.

Fig. 9 is the plan view of Fig. 8.

Figure 10 is the structural representation of drain the oil among the present invention mouth and drain line.

Figure 11 is the plan view of prior art.

Figure 12 is the rear view of Figure 11.

Embodiment

The invention will be further described below in conjunction with drawings and Examples:

As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, crankcase 19, crankcase cover 2 and crankcase cover 3 adopt aluminium alloy compression casting to form, and connect by bolt between the three.The air inlet side of crankcase 19 upper ends is equipped with vacuum diaphragm carburetor 4, and empty filter 12 is installed in the outside of Carburetor 4; The air outlet side of crankcase 19 upper ends fixes a silencer 13, and the outside of this silencing apparatus 13 is covered with guard shield 14, and the below of guard shield 14 is an ignition switch 15.In the outside of crankcase 19 kick-starter 16 is installed, and clutch cover 17 is installed in the outside of crankcase cover 3.The below of described crankcase cover 2 is arranged side by side two supportings 5,6, and this first supporting 5 is connected with the bottom bolt of crankcase cover 2 respectively with second supporting 6; Described fuel tank 1 be installed in the supporting 5,6 and crankcase cover 2 between the space in, the bottom of the shape of this fuel tank 1 and described crankcase cover 2 adapts, be the abnormity that two upwarps, sink in the middle part, and the part that upwarps that is positioned at the same side with Carburetor 4 is provided with oiling well 1b, oiling well 1b next door has oil outlet 1c, and this oil outlet 1c communicates with vacuum diaphragm carburetor 4 by oil pipe 7.

As Fig. 6, shown in Figure 7, first supporting 5 comprises orthogonal floor portion 5a and dogleg section 5b, has supporting mounting hole 5c at two of floor portion 5a the same side, uses when the gasoline feed machine is installed; Two of floor portion 5a opposite side has crankcase mounting hole 5d, and bolt is fixed in first supporting 5 by this hole the bottom of crankcase cover 2; Have bar shaped fuel tank hanging hole 5e on the described dogleg section 5b.

As Fig. 8, shown in Figure 9, second supporting 6 also comprises orthogonal floor portion 6a and dogleg section 6b, have the supporting mounting hole 6c that uses when the gasoline feed machine is installed at two of floor portion 6a the same side, floor portion 6a opposite side has a flange near the position at middle part, have crankcase mounting hole 6d on this flange, bolt is fixed in second supporting 6 by this hole the bottom of crankcase cover 2; Have two bar shaped fuel tank hanging hole 6e on the described dogleg section 6b side by side, have the via hole 6f that wears drain line 10 between the two bar shaped fuel tank hanging hole 6e.

As among Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9 as can be known, be outward extended with hangers 1a on the two side of fuel tank 1, this hangers 1a stretches in the fuel tank hanging hole on the corresponding supporting dogleg section, and fuel tank 1 is suspended in the supporting 5,6.On bar shaped fuel tank hanging hole 5e, the 6e of supporting 5,6, beam 18 is housed, to play cushioning effect.

From Figure 10, can further find out, the mouth 8 of draining the oil that communicates with this crankcase cover 3 inside is housed in the lower end of crankcase cover 3, the described mouth 8 of draining the oil is connected with drain line 10 by pipe clamp 9, and the outlet end of this drain line 10 passes via hole 6f, and its outlet port is provided with plug 11.

Claims

1, a kind of bottom oil tank type universal gasoline engine, comprise fuel tank (1), crankcase (19), crankcase cover (2), crankcase cover (3) and Carburetor (4), it is characterized in that: be arranged side by side first supporting (5) and second supporting (6) in the below of crankcase cover (2), each supporting is threaded with crankcase cover (2); Described fuel tank (1) is installed in the space between supporting and the crankcase cover (2), this fuel tank (1) be shaped as the abnormity that the bottom with described crankcase cover (2) adapts, and communicate with vacuum diaphragm carburetor (4) by oil pipe (7); The two side of described fuel tank (1) is provided with hangers (1a), and this hangers (1a) stretches in the fuel tank hanging hole in the corresponding supporting, and fuel tank (1) is suspended in the supporting (5,6).

2, a kind of bottom oil tank type universal gasoline engine according to claim 1, it is characterized in that: described first supporting (5) comprises orthogonal floor portion (5a) and dogleg section (5b), have supporting mounting hole (5c) at two of floor portion (5a) the same side, two of floor portion (5a) opposite side has crankcase mounting hole (5d); Have bar shaped fuel tank hanging hole (5e) on the described dogleg section (5b).

3, a kind of bottom oil tank type universal gasoline engine according to claim 1, it is characterized in that: described second supporting (6) also comprises orthogonal floor portion (6a) and dogleg section (6b), have supporting mounting hole (6c) at two of floor portion (6a) the same side, floor portion (6a) opposite side has a flange near the position at middle part, has crankcase mounting hole (6d) on this flange; Have two bar shaped fuel tank hanging holes (6e) on the described dogleg section (6b) side by side.

4, a kind of bottom oil tank type universal gasoline engine according to claim 1, it is characterized in that: the mouth of draining the oil (8) that communicates with this crankcase cover (3) inside is housed in the lower end of crankcase cover (3), the described mouth of draining the oil (8) is connected with drain line (10) by pipe clamp (9), and the outlet port of this drain line (10) is provided with plug (11).