CN2263715Y

CN2263715Y - Oil return device capable of keeping carburetor oil surface height stabilized

Info

Publication number: CN2263715Y
Application number: CN 96214892
Authority: CN
Inventors: 边永安
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-06
Filing date: 1996-06-06
Publication date: 1997-10-01
Anticipated expiration: 2006-06-06

Abstract

The utility model relates to an oil return device with the function of keeping the stable height of the oil surface of the carburetor of a gasoline engine. The practicality of an existing device used for overcoming the ' fuel choke' phenomenon of a gasoline engine is very poor. The utility model comprises a container 1, a three-way valve and a floater 2 arranged in the container 1, wherein, one end of the three-way valve is communicated with the bottom of the container 1, and the other end of the three-way valve is provided with an oil storage cavity 6. The valve rod 3 of the three-way valve is connected with the bottom of the floater 2, and the upper valve core 4 and the lower valve core 5 of the three-way valve are respectively fixed on the valve rod 3. The utility model has the advantages that when a motorcar drives down or stops on a steep slope, a phenomenon that the engine of the utility model stops working can not occur.

Description

Can keep the stable oil return apparatus of Carburetor fuel head

The utility model is that a kind of gasoline engine carburetor fuel head that can make keeps stable device.

Existing gasoline engine carburetor is when the petrol pump overpressure, or oil-feed needle-valve wearing and tearing, or automobile travels at a slow speed on rugged road when producing vibration, Carburetor standard pasta is risen, cause fuel delivery too much and waste fuel, in addition because of the mixed gas overrich to making motor quit work (fuel fouling).

For addressing the above problem, notification number is that the Chinese patent literature of CN2090877U discloses a kind of " improving the Carburetor oil-controlling device ": in the indoor overflow chamber of being equipped with of carburettor float, have its lower end to be associated with the float of a cone shaped one-way valve in the overflow chamber.When oil plane, overflow chamber raise, float drove mitre velve and rises, and fuel oil flows to oil pump through return tube and tee union.There is following shortcoming in this device: when abrupt slope under the automobile or when stopping on the abrupt slope, the position of fuel tank is higher than Carburetor, and to making the fuel flow returns in the fuel tank enter the overflow chamber, the fuel oil rising oily plane that is above standard quits work motor the overflow chamber in.Therefore its practicability is very poor.

The purpose of this utility model provides a kind of device, it not only can prevent when the petrol pump overpressure, or oil-feed needle-valve wearing and tearing, or automobile travels at a slow speed on rugged road and produces vibration and make fuel delivery too much or motor is quit work, and can prevent from motor to be quit work when abrupt slope under the automobile or on the abrupt slope during parking.

The utility model comprises a float 2 and the end three-way valve that communicate with container 1 bottom, an end band shoe cream room 6 in a container 1, the container 1, the valve rod 3 of three-way valve is connected with the bottom of float 2, and the upper valve core 4 and the lower valve core 5 of three-way valve are fastened on respectively on the valve rod 3.Upper valve core 4 and lower valve core 5 can be taper, sphere or plain film shape.When the utility model uses, container 1 is fastened on the position that is lower than Carburetor standard oil plane, and the top of container 1 is communicated with at place, standard oil plane with Carburetor.One termination fuel tank of three-way valve band shoe cream room 6, an end as above speed communicate the 3rd termination fuel pump with container 1 bottom.Under the normal condition, fuel oil flows to shoe cream room 6, lower valve core 5 open access, and fuel oil is then delivered to Carburetor by oil pump, makes Carburetor obtain continuous fuel delivery.This moment, upper valve core 4 was closed path, can prevent that oil pump from sucking air.When fuel oil surpassed the standard oil plane of Carburetor, fuel oil flow in the container 1, and the fuel oil in the container 1 increases, and float 2 rises, and drove upper valve core 4 and lower valve core 5 and rose together.Lower valve core 5 is closed path, and the oil in the fuel tank can not be flowed into again.Upper valve core 4 open access make the fuel oil in the container 1 be pumped into Carburetor.Carburetor is constantly worked, and fuel oil is reducing, and the oily plane in the container 1 descends, and float 2 descends, and drives upper valve core 4 and lower valve core 5 and descends together, and lower valve core 5 open access flow into the oil in the fuel tank.Upper valve core 4 is closed path, and the fuel oil in the container 1 can not be sucked by pump.When abrupt slope under the automobile or when stopping on the abrupt slope, the position of fuel tank is higher than Carburetor and this device, and lower valve core 5 is closed path, and the oil in the fuel tank can not flow into.The utility model also can be arranged in the Carburetor, and to replace the oil-feed needle and the float of Carburetor, effect is identical, but structure is more compact.

Compare with prior art, the utility model has the advantages that when abrupt slope under the automobile or when stopping on the abrupt slope, motor out-of-work phenomenon can not occur.

Accompanying drawing is embodiment's a structural representation.

Embodiment: see accompanying drawing.Container 1 and float 2 all are cylindric.The section of the valve rod 3 of three-way valve is triangular shape.The upper valve core 4 and the lower valve core 5 of three-way valve are taper.7 is Carburetor standard oil plan-position among the figure, and 8 locate the oil pipe that is communicated with for the top that makes container 1 and Carburetor on the standard oil plane.One end of three-way valve band shoe cream room 6 is by pipeline 8 Bunker of Redelivery casees, and the pipeline that the pipeline of three-way valve Bunker of Redelivery pump 10 is 9, connect Carburetor is 11.Arrow on the pipeline is represented the fuel flow direction.

Claims

1, a kind ofly can keep the stable oil return apparatus of Carburetor fuel head, it is characterized in that comprising a float (2) and an end and container (a 1) bottom three-way valve that communicate, an end band shoe cream room (6) in a container (1), the container (1), the valve rod of three-way valve (3) is connected with the bottom of float (2), and upper valve core of three-way valve (4) and lower valve core (5) are fastened on respectively on the valve rod (3).

2, can keep the stable oil return apparatus of Carburetor fuel head as claim 1 is said, it is characterized in that container (1) and float (2) all are cylindric, the section of the valve rod of three-way valve (3) is triangular shape, and upper valve core of three-way valve (4) and lower valve core (5) are taper.