CN2537828Y - Oil saving purifier for motorcycle - Google Patents

Abstract

The utility model relates to a fuel-saving purification device for motorcycles, which comprises a fuel vapor recoverer installed between the fuel tank and a carburetor, a secondary air injector installed on the cylinder head of the engine, and an unpacking installed in the muffler. Three-way catalytic converter. Its fuel vapor recoverer and secondary air injector are respectively controlled by negative pressure pipes connected with the engine air intake. The fuel vapor recoverer comprises an activated carbon tank (1) and an air control valve (2) on the upper part of the activated carbon tank; the activated carbon tank is equipped with interphase polyurethane foam (3) and activated carbon (4). Its secondary air ejector includes a secondary air injection pipe (15), a reed valve (16), and an air stop valve (17). The utility model has the advantages of relatively simple structure, high fuel saving rate, and less harmful gas in the discharged tail gas. The harmful gas in the exhaust gas emitted by motorcycle engines is lower than that of ordinary motorcycles, which can meet the standards of national and relevant local environmental protection regulations.

Description

A motorcycle fuel-saving purification device

Technical Field The utility model relates to an additional device for an engine, in particular to a fuel-saving purification device for a motorcycle.

technical background

The fuel vapor discharged from the vent of the motorcycle fuel tank not only pollutes the atmosphere, but also causes fuel loss; the exhaust gas discharged from the motorcycle engine contains harmful gases such as carbon monoxide and hydrocarbons, which pollutes the environment even more. In order to save fuel and reduce harmful gases discharged from the engine, people have designed a variety of engine attachments. On March 28, 2001, the Chinese Patent Gazette announced a utility model patent with the patent number ZL99229032 and the name "comprehensive fuel-saving purification device for automobiles". There is a gas-supplementing strong mist device connected in series between the oil tanks, and a heat exchanger is installed on the exhaust pipe of the engine. A throttle valve, an ozone generator and an air filter are connected in series at the inlet; a suction pipe is added to the inlet of the air filter, and a condensation oil collector is connected in series on the suction pipe to be connected with the air outlet of the engine crankcase. Compared with the prior art, the patented technology improves the fuel saving rate and reduces harmful gas emissions, but its structure is relatively complicated.

The content of the invention

The purpose of the utility model is to provide a motorcycle fuel-saving purification device with relatively simple structure, high fuel-saving rate, less harmful gas in the exhaust gas, and meeting the standards of national environmental protection regulations.

A motorcycle fuel-saving purification device, including a fuel vapor recovery device installed between the fuel tank and the carburetor, a secondary air injector installed on the engine cylinder head, a three-way catalytic converter installed in the muffler, It is characterized in that: both the fuel vapor recoverer and the secondary air injector communicate with the engine inlet, and the three-way catalytic converter is arranged at the outlet of the exhaust pipe of the engine.

The fuel-saving purification device for a motorcycle, its fuel vapor recovery device includes an activated carbon tank and an air control valve on the upper part of the activated carbon tank, the activated carbon tank and the air control valve are integrated; the activated carbon tank is equipped with alternate polyurethane Foam and activated carbon; the lower end of the activated carbon tank is provided with an exhaust port and a drain port; the air control valve is composed of a valve body, a valve cover, a diaphragm, and an elastic element. The air pipe communicates with the carburetor; the negative pressure pipe communicates with the air intake of the engine; the diaphragm moves up and down under the pressure change of the negative pressure pipe communicated with the engine air intake; the combustible gas adsorbed by activated carbon is introduced into the carburetor . In this way, the pollution of hydrocarbons and nitrogen oxides in the fuel vapor to the atmosphere can be reduced, and the purpose of saving fuel can also be achieved. After testing, the fuel consumption of motorcycles per 100 kilometers can be reduced by about 10%.

The fuel-saving purification device for a motorcycle is characterized in that the secondary air injector includes a secondary air injection pipe, a reed valve, and an air shut-off valve; the reed valve is composed of a valve seat, a valve cover, and a reed; the air The stop valve is composed of air inlet seat, valve body, upper cover, valve diaphragm, valve core shaft, valve core spring and piston; one end of the secondary air injection pipe is connected to the engine exhaust pipe, and the other end is connected to the air outlet of the reed valve The air inlet of the reed valve communicates with the air outlet of the air shut-off valve, and the air inlet of the air shut-off valve communicates with the atmosphere; the negative pressure tube installed on the upper cover of the air shut-off valve communicates with the engine air inlet; The diaphragm of the control valve moves up and down, which drives the piston to open or close the air inlet of the air shut-off valve. Utilize the exhaust negative pressure to introduce fresh air into the engine exhaust port and mix with the exhaust gas to make it oxidize and reduce harmful gas emissions. It can also prevent the phenomenon of blasting when the engine is running at high speed.

The fuel-saving purification device for a motorcycle is characterized in that the surface of the three-way catalytic converter is honeycomb-shaped and coated with precious metals; its function is to convert carbon monoxide and hydrocarbons in the exhaust gas into carbon dioxide and water .

Compared with the prior art, the utility model has the advantages of relatively simple structure, high fuel saving rate, and less harmful gas in the discharged tail gas. Through experimental comparison, the harmful gas in the exhaust gas discharged by the motorcycle engine of the present utility model is lower than that of ordinary motorcycles, [CO] reaches below 2.5%, and [HC] reaches below 300ppm, which can reach the standards of national and relevant local environmental protection regulations. .

Description of drawings

Figure 1 is a schematic diagram of the installation position of the utility model.

Figure 2 is a schematic diagram of the structure of the fuel vapor recovery device.

Fig. 3 is a structural schematic diagram of the air stop valve of the secondary air injector.

Fig. 4 is a structural schematic diagram of the reed valve of the secondary air injector.

Fig. 5 is a structural schematic diagram of a three-way catalytic converter.

Detailed ways

Referring to Fig. 1, the upper part is an air control valve 2, the lower part is provided with an exhaust port 5 and a drain port 6, and the fuel vapor recovery device 31 of the activated carbon tank 1 with polyurethane foam 3 and activated carbon 4 alternated therein is installed in the Between the fuel tank 12 and the carburetor 30, the intake pipe 11 of the air control valve 2 is connected to the gas outlet of the fuel tank 12, and the gas outlet pipe 13 communicates with the carburetor 30;

Referring to Fig. 2, the valve body 7 of the air control valve 2 is integrated with the activated carbon tank 1, and an elastic element 10 and a diaphragm 9 are installed in it, sealed with a valve cover 8, and the negative pressure pipe 14 of the air control valve 2 is connected with the engine The air inlet 34 of 32 communicates, and the diaphragm 9 moves up and down under the pressure change of the negative pressure pipe 14, and the combustible gas adsorbed by the activated carbon 4 is introduced into the carburetor 30 to participate in combustion, thereby reducing the hydrocarbon and hydrogen in the fuel vapor. The pollution of nitrogen oxides to the atmosphere can also achieve the purpose of saving fuel;

Referring to Fig. 1, Fig. 3 and Fig. 4, one end of the secondary air injection pipe 15 of the secondary air injector 33 communicates with the engine exhaust pipe 35, and the other end communicates with the valve seat 18, valve cover 19 and reed 20. The gas outlet of reed valve 16 communicates, and the gas inlet of reed valve 16 is made up of gas inlet seat 21 valve body 22, loam cake 23, valve diaphragm 24, spool shaft 25, spool spring 26 and piston 27. The gas outlet of air shut-off valve 17 communicates, and the air inlet 37 of air shut-off valve 17 communicates with atmosphere, and the negative pressure pipe 28 that is contained on the loam cake 23 of air shut-off valve 17 communicates with engine air inlet 34, and controls valve membrane Sheet 24 moves up and down, drives piston 27 thereupon to open or close the air inlet of air stop valve. Utilize the exhaust negative pressure to introduce fresh air into the engine exhaust pipe 35 and mix with the exhaust gas to make it oxidize and reduce harmful gas emissions. It can also prevent the phenomenon of blasting when the engine is running at high speed.

Referring to Fig. 1 and Fig. 5, a three-way catalytic converter 29 with a honeycomb surface and coated with precious metals is installed in the muffler 36 to convert carbon monoxide and hydrocarbons in the exhaust gas into carbon dioxide and water.

Claims (4)

1, a kind of motorcycle oil-saving purifier, comprise the fuel-steam recover (31) that is installed between fuel tank (12) and the Carburetor (30), be installed in AIR Air Injector Reactor (33) on motor (32) cylinder head, be installed in the TWC Three Way Catalytic catalyst (29) in the silencing apparatus (36), it is characterized in that: fuel-steam recover (31) and AIR Air Injector Reactor (33) all communicate with engine intake (34), and TWC Three Way Catalytic catalyst (29) is located at the outlet of the outlet pipe (35) of motor (32).

2, a kind of motorcycle oil-saving purifier according to claim 1 is characterized in that fuel-steam recover (31) comprises the air shut-off valve (2) on activated carbon canister (1) and activated carbon canister top, and activated carbon canister and air shut-off valve are an integral body; Alternate polyurethane foam (3) and active carbon (4) are housed in the activated carbon canister; The lower end of activated carbon canister is provided with relief opening (5) and drain opening (6); Air shut-off valve (2) is made up of valve body (7), valve gap (8), diaphragm (9), elastic element (10), and the suction tude of air shut-off valve (11) is connected with the air outlet of fuel tank (12), and steam outlet pipe (13) communicates with Carburetor (30); Negative pressure pipe (14) communicates with the suction port (34) of motor.

3, a kind of motorcycle oil-saving purifier according to claim 1 is characterized in that AIR Air Injector Reactor (33) comprises secondary air injection tube (15), leaf valve (16), air cutoff valve (17); Leaf valve is made up of valve seat (18), valve gap (19), reed (20); Air cutoff valve is made up of with piston (27) suction port seat (21), valve body (22), loam cake (23), valve film (24), poppet shaft (25), valve core spring (26); Secondary air injection tube (15) one ends communicate with engine exhaust pipe (35), the other end communicates with the air outlet of leaf valve (16), the suction port of leaf valve (16) communicates with the air outlet of air cutoff valve (17), and the suction port of air cutoff valve (37) communicates with atmosphere; The negative pressure pipe (28) that is contained on the loam cake (23) of air cutoff valve (17) communicates with engine intake (34).

4, a kind of motorcycle oil-saving purifier according to claim 1 is characterized in that the surface of TWC Three Way Catalytic catalyst (29) is cellular, and is coated with precious metal.

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