KR200374214Y1 - Automobile fuel system using used vegetable oil and filtering station - Google Patents

Abstract

The present invention relates to a fuel supply device and a storage device for use as a fuel for automobiles and internal combustion engines that use diesel oil as a fuel in a state in which only foreign substances and moisture are filtered out without chemical treatment of waste cooking oil discarded after use at home or a restaurant. .

The present invention is a tank for storing waste cooking oil in a vehicle, a device for heating the waste cooking oil stored in the tank, a pipe for supplying the waste cooking oil to the engine, and converts the transferred waste cooking oil into a viscosity close to light oil and burns in the engine. Heater to facilitate facilitation, filter to remove foreign substances and water contained in waste cooking oil, pipe for injecting waste cooking oil into engine from fuel injector and reducing remaining cooking oil to storage tank, diesel and waste oil Alternative fuel supply device, including a switching device (three-way valve) that can be supplied to the engine, and a removal device and storage to remove foreign substances and water contained in the waste cooking oil before supplying the collected waste cooking oil to the alternative fuel tank. Relates to the provision of a device.

By using waste cooking oil as fuel instead of diesel, resources can be recycled, contributing to environmental protection by reducing soot, and users can reduce fuel costs.

Description

Fuel supply device and filtering device of diesel vehicle using waste cooking oil as fuel {AUTOMOBILE FUEL SYSTEM USING VEGETABLE OIL AND FILTERING STATION}

The present invention relates to an automobile fuel supply device using waste cooking oil. The waste cooking oil storage tank and waste cooking oil in the storage tank are stored in the existing fuel supply device to selectively use diesel fuel used as a diesel engine fuel and waste cooking oil as an alternative fuel. 3-way valve for easy selection of fuel supply by heating device, switch operation, heating device that heats waste cooking oil before supplying to diesel engine, lowers viscosity and enables easy ignition and combustion, and waste that is supplied to engine By using a fuel filter that removes foreign substances and water contained in cooking oil, it prevents the environmental pollution caused by the disposal of waste cooking oil and reduces the harmful components in combustion. A device that removes various foreign substances and water contained in waste cooking oil before supplying it to the tank. It relates to a storage device.

Recently, due to the finiteness of fossil fuels and the deterioration of air pollution, interest in alternative fuels of automobiles is focused. Furthermore, in the resource shortage situation, environmental improvement and resource recycling are considered as essential tasks, and attention is being focused on the development of alternative fuels and low-pollution fuels and resource recycling of internal combustion engines.

Waste cooking oil, which is food waste generated at homes, restaurants, and bakeries, can cause environmental pollution by itself.However, if such waste oil is used as a fuel for diesel engines, it contains about 10% of oxygen in itself. As a result, soot emissions, a major problem of diesel engine exhaust emissions, are reduced, increasing the value not only as an alternative fuel but also as a low pollution fuel.

The engine of a vehicle is provided with a fuel supply device for supplying each combustion chamber the exact amount of fuel required for driving the engine according to the load and external conditions of the engine.

Looking at the fuel supply device of a diesel engine using diesel as fuel as shown in FIG.

First, the fuel stored in the fuel tank 110 is forced to be sucked into the fuel pump 140 through the fuel supply pipe 120 and through the fuel filter 130. The fuel is pressurized to high pressure by the injection pump 150 to be supplied to each injection nozzle 160. In this process, the fuel pressure regulator 170 returns the fuel back to the fuel tank 110 through the fuel return pipe 180 when the set pressure is exceeded in order to maintain a constant fuel injection amount in response to the pressure change of the fuel.

However, with the recent interest in alternative fuels, the development of alternative fuels and the development of fuel supply devices has become necessary, and the development of automobile fuel supply devices that can selectively use diesel oil and waste cooking oil as alternative fuels. Came to be required.

The present invention for solving the problems as described above can be selectively used by the switch operation of diesel oil and diesel fuel used as fuel of the diesel engine, the high viscosity state to use such waste cooking oil as alternative fuel The purpose is to facilitate the combustion in diesel engines by converting the waste cooking oil to a suitable temperature and converting it to a viscosity close to light oil.

The present invention for achieving the above object is a tank for storing alternative fuel in the vehicle, a device for heating the waste cooking oil stored in the tank, a pipe for supplying the waste cooking oil to the engine, the conveyed waste cooking oil in a state close to the diesel A heating device that converts and facilitates combustion in the engine, a filter that removes foreign substances and water contained in the waste cooking oil, and a pipe for injecting waste cooking oil into the engine from the fuel injector and reducing the remaining cooking oil to the storage tank. And other foreign substances contained in the waste cooking oil before supplying the alternative fuel tank to the alternative fuel tank, including the alternative fuel supply device including a switching device (three-way valve) for selectively supplying diesel and waste oil to the engine. The present invention provides a removal device and a storage device for removing moisture.

1 is a schematic configuration diagram showing a fuel supply device for a vehicle using conventional diesel oil;

Figure 2 is a schematic configuration diagram showing a vehicle fuel supply apparatus using waste cooking oil according to the present invention,

3 is a waste cooking oil storage tank equipped with a heating device

Figure 4 is a replacement fuel filter with a built-in heating device of cooking oil supplied to the engine

5a and 5b is one side cross-sectional view showing the main configuration of the three-way valve of the present invention,

6 is a schematic configuration diagram of a device for removing and storing impurities and water in the collected cooking oil

<Description of the code | symbol about the principal part of drawing>

10: fuel tank 11: alternative fuel tank with a built-in heating device

20: engine 21,22,23: coolant circulation pipe

30,31: fuel supply pipe 40: fuel filter

41: alternative fuel filter with built-in heating device

50: fuel pump 51: injection pump

60, 61: 3-way valve 70: Injection nozzle

80: fuel pressure regulator 90,91: return pipe

Referring to the configuration and operation according to an embodiment of the present invention by the accompanying drawings as shown in Figures 2 and 3, 4, 5a, 5b, 6.

As shown in FIG. 2, when diesel is used as a fuel, fuel stored in the fuel tank 10 passes through the fuel supply pipe 30, passes through the fuel filter 40, and is forced into the fuel pump 50. The fuel is pressurized to a high pressure by the injection pump 51 is supplied to each injection nozzle (70). In this process, the fuel pressure regulator 80 returns the fuel back to the fuel tank 10 through the fuel return pipe 90 when the set pressure is exceeded in order to maintain a constant fuel injection amount in response to the pressure change of the fuel.

On the other hand, in the case of using alternative fuel as a fuel, the waste cooking oil stored in the alternative fuel tank 11 is heated by the heating device 12 in the tank, and the fuel replacement pipe 31 has a heating device built therein. ), Impurities and moisture in the fuel are removed. The alternative fuel from which impurities are removed is forcibly sucked into the fuel pump 50 while passing through the three-way valve 60 and transferred to the injection pump 51. The alternative fuel pressurized at high pressure in the injection pump 51 is injected into each injection. It is transferred to the nozzle 70. At this time, when the alternative fuel exceeds the set pressure, it is returned to the alternative fuel tank 11 through the three-way valve 61 and the return pipe 91 through the fuel pressure regulator 80 to flow.

The three-way valve of the vehicle fuel supply device using the waste cooking oil of the present invention is selectively opened and closed the inlet of the three-way valve according to the signal value of the selection switch. First, the three-way valve 60 installed between the fuel filter 40 and the fuel pump 50 has the solenoid valve A 60a closed and the solenoid valve B 60b open from the fuel tank 10 when light oil is used. The introduced fuel is transferred to the injection nozzle 70. In addition, the three-way valve 61 installed between the fuel pressure regulator 80 and the fuel tank 10 closes the solenoid valve D 61d so that light oil returned by the excess pressure can be circulated back to the fuel tank 10. The solenoid valve C 61c is opened.

On the contrary, when the fuel is used as waste cooking oil in diesel, the three-way valves 60 and 61 operate according to the signal value of the selector switch. That is, the three-way valve 60 installed between the fuel filter 40 and the fuel pump 50 has the solenoid valve A 60a open and the solenoid valve B 60b closed to flow in from the alternative fuel tank 11. The fuel is transferred to the injection nozzle 70 and the fuel stored in the fuel tank 10 is closed. Similarly, the three-way valve 61 installed between the fuel pressure regulator 80 and the alternative fuel tank 11 has the solenoid valve D 61d open and the solenoid valve C 61c closed to return the excess fuel returned by the excess pressure. Can be introduced back into the alternative fuel tank (11).

The fuel pressure in the fuel pressure regulator 80 is maintained in order to maintain a constant fuel injection amount during the fuel supplied through the fuel pump 50 is injected from the injection pump 51 to the combustion chamber through each injection nozzle 70. When the set pressure is exceeded, the fuel return pipes 90 and 91 return to the fuel tanks 10 and 11 again.

In this process, the alternative fuel is heated while the heated cooling water passing through the engine 20 circulates the heating device 12 and the heating device 42 of the alternative fuel filter 41 in the alternative fuel tank 11.

Therefore, the automobile fuel supply device using the waste cooking oil of such a configuration is an alternative fuel tank, an alternative fuel filter, and a three-way valve in the existing fuel supply device to selectively use diesel fuel used as a diesel engine fuel and waste cooking oil as an alternative fuel. It is possible to easily select the feed fuel by installing a switch.

Looking at the storage device for removing impurities and water in the waste cooking oil of the present invention as shown in Figure 6, the waste cooking oil tank 210 and filter 220 and the waste cooking oil storage device 230 from which impurities are removed ) And the discharge valve (240, 270, 280), the air pressure pump 250 and the heating device (260).

As described above, the present invention operates a switch by installing an alternative fuel tank, an alternative fuel filter, and a three-way valve in an existing fuel supply device to selectively use diesel oil used as fuel of a diesel engine and waste cooking oil, which is an alternative fuel. It is possible to easily select the fuel to be supplied.In order to use such waste cooking oil as a fuel, waste fuel oil is improved by using an alternative fuel heating device to reduce the viscosity of the fuel so that it can be easily ignited and combusted in a diesel engine. To prevent the cost and pollution of disposal, and the harmful components such as soot during combustion is reduced by the oxygen contained in the waste cooking oil burning itself to prevent environmental pollution.

The present invention is not limited to the above embodiments and may be variously modified and implemented by those skilled in the art without departing from the technical gist of the present invention.

Claims (6)

A fuel tank 10 storing fuel, a fuel filter 40 for filtering impurities, an injection pump 51 for pressurizing the fuel at a constant pressure, an injection nozzle 70 for injecting fuel into the combustion chamber, and the fuel tank ( 10) to the fuel supply apparatus of the existing diesel vehicle consisting of a supply pipe 30 for transporting fuel to the injection nozzle 70 and a return pipe 90 for transporting the fuel returned by the fuel pressure regulator 80. In this case, a three-way valve (60) and the fuel pressure regulator (80) and the fuel tank (41) installed between the alternative fuel tank (11) with a heating device, the fuel filter (41) with a heating device, and the fuel pump (50) Car fuel supply using waste cooking oil, characterized in that the three-way valve 61 provided between the fuel tank 11 and the return pipe 91 for returning the excess fuel to the alternative fuel tank 11 is provided. Device. The heating device (42) according to claim 1, wherein the heating device (42) is disposed between the heating device (12) and the three-way valve (60) in the replacement fuel tank (11) for heating the alternative fuel by circulating the heated coolant while passing through the engine (20). Automotive fuel supply apparatus using waste cooking oil, characterized in that the filter is further provided with a built-in replacement fuel (41). The fuel tank according to claim 1, wherein the alternative fuel storage tank (11) is provided with an alternative fuel tank (10) equipped with a heating device (12) for circulating the heated coolant while passing through the engine (20) to heat the alternative fuel. According to claim 1, wherein the three-way valve 60 is provided with a solenoid valve (60a) toward the supply pipe 31, the solenoid valve (60b) is provided toward the supply pipe 30, the fuel pressure regulator (80) Next, the three-way valve 61 is provided with a solenoid valve 6Ic toward the return pipe 90 and a solenoid valve 61d toward the return pipe 91. Device. The fuel filter (41) of claim 1, further comprising an alternative fuel heating device (42) for circulating the heated coolant while passing through the engine (20) to heat the alternative fuel. The waste cooking oil tank 210, the filter 220, and the waste cooking oil storage device 230, the discharge valves 240, 270, 280, and the air pressure pump 250, which are collected to filter the collected waste cooking oil as an alternative fuel, are removed. And cooking oil filtration and storage device consisting of a heating device (260)