WO2013085155A1

WO2013085155A1 - Heating system of a fuel filter used in a diesel engine

Info

Publication number: WO2013085155A1
Application number: PCT/KR2012/009552
Authority: WO
Inventors: 이영훈; 백광열; 김진원
Original assignee: Lee Young Hun; Back Kwang Yeol; Kim Jin Won
Priority date: 2011-12-06
Filing date: 2012-11-13
Publication date: 2013-06-13
Also published as: KR101325626B1; KR20130063154A

Abstract

Disclosed is the heating system of a fuel filter used in a diesel engine. The heating system includes: a heating block including a detachable case closely attached to the outer surface of a fuel filter used in a diesel engine and a heating part installed on the inner surface of the case closely attached to the outer surface of the fuel filter; and a controller electrically connected to the heating part of the heating block to control temperature. The heating system may be easily detached or attached to the outer surface of a filter cartridge exposed to the outside of the heating system. Furthermore, the heating system may effectively prevent diesel fuel from being frozen.

Description

Heating system of fuel filter for diesel engine

The present invention relates to a heating system installable on a fuel filter of a diesel engine, and more particularly, to a fuel filter heating system of diesel fuel installed outside the fuel filter to prevent freezing of the diesel fuel.

Internal combustion engine vehicles using diesel fuel are widely used as engines for various industrial fields and transportation vehicles requiring high power due to high thermal efficiency, high torque, and high fuel efficiency, compared to vehicles using gasoline fuel. However, diesel fuel, a diesel engine, has a freezing point of minus 16 degrees Celsius, which results in a decrease in winter fluidity and exposure to the atmosphere at low temperatures, causing fuel to freeze over long periods of time.

Currently, the fuel filter of diesel vehicles is installed in the middle of the fuel pipe connected from the fuel tank to the fuel injection device mounted on the engine, and is used to remove water and foreign substances in the fuel. However, the diesel engine fuel filter is mounted on the outer wall of the engine room for small trucks, vans and diesel passenger cars, and is mounted on the vehicle frame in the case of medium and large trucks and is always exposed to the atmosphere.

As such, the fuel filter may be frozen inside the fuel filter when the fuel filter is installed at a long distance in winter or when the temperature decreases, thereby preventing the vehicle from being supplied with fuel.

In the case of existing diesel vehicles, a heating device is integrally installed and installed on the upper part of the fuel filter module. However, this method cannot effectively prevent freezing of diesel fuel in cold weather conditions, especially in a vehicle in which the fuel filter is exposed to the outside. There is no guarantee that the engine will run in cold weather.

The present invention is to solve the above-mentioned problems, while effectively preventing the fuel filter using a diesel engine freezes in cold weather, while being easily applicable to fuel filters having various shapes and dimensions, and at the same time installing the device and It is an object of the present invention to provide a heating system of a diesel engine fuel filter that is easy to dismantle.

The heating system of the fuel filter for a diesel engine according to the present invention includes a case in close contact with the outer surface of the fuel filter of the diesel engine and detachable and attachable; And a heating unit installed on an inner surface of the case that is in close contact with the outer surface of the fuel filter. The heating block may include a controller that is electrically connected to the heating unit of the heating block and controls a temperature.

Here, the heating unit may be any one of a urethane rubber heating wire, a heating film or a ceramic heating element. Furthermore, the case may be formed of any one of stainless steel, plastic resin, or monolium.

In addition, the controller is connected to the battery of the diesel engine, the operating voltage of the controller is set to be greater than the rated voltage of the battery within the generator voltage range of the battery, the voltage applied from the battery during operation of the diesel engine When the operating voltage is equal to or greater than the operating voltage, power may be applied to the heating unit.

Further, the controller is connected to the start key switch of the diesel engine, when the start key switch is in the start-on state, the controller may apply power to the heating unit.

The heating block may further include a temperature sensor. In this case, the controller may cut off the power applied to the heating unit when the temperature detected from the temperature sensor is greater than or equal to a set temperature.

In addition, the controller may further include a vibration sensor, the controller may apply power to the heating unit when the vibration of the diesel engine is detected by the vibration sensor.

Heating system according to the present invention can be easily attached and detached to the filter cartridge outer surface of the fuel filter exposed to the outside. In addition, it is possible to manufacture a heating block of various dimensions and appearance to match the dimensions and appearance of the fuel filter. Furthermore, even without using a fuel preheater having a complicated structure as in the related art, freezing of diesel fuel can be effectively prevented.

1 is a top view of a heating block according to the present invention.

2 is a front view of the heating block according to the present invention.

3 is a block diagram of a heating system according to the present invention.

4 is a front view showing a state in which the heating block according to the present invention mounted on the fuel filter.

5 to 7 are views showing another embodiment of the heating block according to the present invention.

Hereinafter, a heating system of a diesel engine fuel filter according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, the heating system of the fuel filter for a diesel engine according to the present invention may include a heating block 100 and a temperature control controller 180. Here, the heating block 100 may include a case disposed to be in close contact with the outer surface of the fuel filter of the diesel engine, and a heating unit installed at the inner surface of the case to be in close contact with the outer surface of the fuel filter. The controller may be electrically connected to the heating unit of the heating block to control the temperature.

1 and 2, the detailed configuration of the heating block 100 will be described. The case of the heating block 100 may include, for example, a first case member 110 and a second case member 120, which may be in close contact with the outer surface of the fuel filter. One end of the first and

second case members

110 and 120 may be rotatably coupled to each other by the hinge unit 160. The other ends of the first and

second case members

110 and 120 may be fixed to each other by separate fastening means 150. By the hinge portion 160 and the fastening means 150, the first and

second case members

110 and 120 closely adhere to the filter cartridge outer surface 210 (see FIG. 4) of the fuel filter 200 (see FIG. 4). But it can be installed to be removable and attached. Here, the shapes of the first and

second case members

110 and 120 may have substantially the same shape as the filter cartridge outer surface 210 of the fuel filter 200. In general, since the filter filter of the fuel filter has a cylindrical shape having a circular cross section, the first and

second case members

110 and 120 may be formed to have a shape in which a cylindrical hollow is formed therein.

In addition, the case may be formed of various materials. In particular, the case can be formed of stainless steel (Stainless Steel), stainless steel has the advantage of maintaining a constant strength and durability without rust or deformation due to external foreign matter even when exposed to the atmosphere. Therefore, if the case is made of stainless steel, it is possible to protect the installed heating portion without damage even when the vehicle is impacted from the external rigid body during installation.

In addition, the case may be formed of a plastic resin material, in this case, the manufacturing cost is lower than that of stainless steel, it is advantageous in that there is no rust when exposed to the atmosphere. In addition, when the plastic resin case is used, it can be manufactured in various colors when forming a product, thereby improving the aesthetics of the device and at the same time gaining the additional weight of the entire device.

Furthermore, the case may be formed of a monolium material. Monolium case has the advantage of being lightweight, high degree of freedom of shape, and can save time and cost in manufacturing. In particular, unlike the case made of stainless steel or plastic resin, the monolium case is more easily mounted on the fuel filter even in a fuel filter in a location where it is difficult to secure a mounting space for the heating block. That is, it can be easily fastened to fuel filters of various dimensions and shapes, and it is possible to secure the adhesion with one case without having to separate the two cases to secure the adhesion to the outer surface of the filter cartridge. In other words, when fastening, for example, a fastening means such as a velcro band can be employed, the detachment and attachment of the case is quick and easy.

For reference, FIGS. 5 to 7 illustrate a heating block composed of a monolium case. Here, the heating part 130a may be internally provided in the monolium case 110a. In addition, a pair of

velcro bands

150a and 150b may be provided at both ends of the monolium case 110a as fastening means. The heating block of such a structure can provide an integrated case and heating unit structure due to the flexibility of the monolium case compared to the case of other materials. In particular, as shown in Fig. 5c, since the installation can be performed only by detaching and attaching the pair of

velcro bands

150a and 150b, it is quicker and easier to detach and attach to the filter cartridge of the fuel filter.

On the other hand, the heating unit, for example, when the case is composed of the first and second case member (110, 120) may be composed of the first and second heating unit (130, 140) so that they can be installed separately. In particular, the

heating unit

130, 140 is preferably installed on the inner surface of each of the case (110, 120) in close contact with the outer surface of the fuel filter. The heating unit may be electrically connected to the controller 180 by

terminals

170a and 170b formed on the outer surface of the case, and may be controlled by the controller 180. In this case, the

terminals

170a and 170b may be provided in the form of a terminal socket 170, for example, as shown in FIG. 5.

In addition, the heating unit may be formed of any one of a urethane rubber heating wire, a heating film or a ceramic heating element. Here, the urethane rubber heating wire is surrounded by a urethane rubber covering the heating wire, has excellent durability to withstand frequent vibration and external shocks of the vehicle, and also ensures the safety of the heating wire itself by blocking the inflow of oil, foreign substances, etc. from the outside. Is possible, and is easy to install and maintain. In the case of using a urethane rubber heating wire, it is preferable to wrap the inside of the case with a neoprene material, which is an organic compound, in order to increase the thermal conductivity due to heating and adhesion when the fuel filter is mounted. In addition, it is preferable to form a groove having a width * thickness (1.2 * 0.3) cm in the inner surface of the case so that the heating heating wire can be inserted. In particular, the urethane rubber heating heating wire is easy to bend, the round arrangement of the heating wire and the molding of the groove to be mounted is simple and free. In addition, there is an advantage that there is no problem of electrical interference and insulation even when the heating heating wires are overlapped several times.

The heating unit may be formed of a film heating wire, and the heating film heating wire may be attached to the inner surface of the case to surround the fuel filter. Here, the film heating wire may be bent and processed to the same size as the case, and the heating film heating wire may be disposed outside the fuel filter as a whole, thereby improving heating performance. In particular, it is more advantageous when using a vehicle battery as a power source of the heating system according to the present invention.

In addition, the heating unit may be composed of a ceramic heater using a ceramic heating element, and in the case of using the ceramic heating element, there is an advantage in that high temperature heat may be generated in a short time and thermal conductivity is high.

Next, as shown in FIG. 3, the controller 180 is electrically connected to a heating unit installed in the heating block 100. Here, the controller 180 may include a diode or a vibration sensor. When controlling the temperature of the heating unit using a diode, it is preferable to use the battery 300 of the vehicle as a power source. For example, in a diesel vehicle using a battery having a rated voltage of 12V as a power source, the battery voltage during operation of the vehicle is maintained at 12V to 13.8V by the generator voltage (generator steady state). In this case, by controlling the operating power of the 12V heating system to 12.5V, the power is not applied to the heating system when the vehicle is not running, but only when the voltage is 12.5V or more when the vehicle is started and operated. Can be designed to work. Likewise, in the case of a diesel engine using a battery having a rated voltage of 24V as a power source, since the battery voltage is maintained at 24V to 24.5V according to the generator voltage (generator normal state), the 24V heating system does not operate the power supply. Controlled to 24.5V, it can be designed to operate with power only at higher voltage.

On the other hand, when controlling the temperature of the heating unit by using the vibration sensor, by installing the vibration sensor in the middle of the heating power connection portion attached to the vehicle body or the battery outer surface to detect the vibration of the vehicle when starting the engine so that the power is applied to the heating unit. have.

In addition, when the driver puts the key switch 310 in the "start-on" state to start the engine, the start key signal line is connected to the controller 180 of the heating system so that the start key switch is turned on. It is also possible to control the heating device to generate heat unconditionally. Furthermore, when the heating block is provided with a temperature sensor (not shown), the controller 180 receives the feedback signal from the temperature sensor and configures the controller 180 to cut off the power when the temperature detected by the temperature sensor is 20 degrees or more. It may be. Here, the temperature sensor may be separately mounted to the heating block 100, or may use a temperature sensor provided in the heating unit itself.

For reference, FIG. 4 illustrates a state in which the heating block 100 according to the present invention is installed in the fuel filter 200 for the diesel engine. As shown in FIG. 4, the heating block 100 according to the present invention is easily detachable and attachable to the filter cartridge outer surface 210 of the fuel filter 200 exposed to the outside. In addition, heating blocks of various dimensions and shapes may be manufactured to match the dimensions and appearance of the fuel filter 200. Furthermore, even without using a fuel preheater having a complicated structure as in the related art, freezing of diesel fuel can be effectively prevented.

Although a preferred embodiment of the present invention has been described so far, those skilled in the art will be able to implement in a modified form without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention described herein are to be considered in descriptive sense only and not for purposes of limitation. Should be interpreted as being included in.

Claims

A case close to the fuel filter outer surface of the diesel engine and detachable and attachable; And a heating unit installed on an inner surface of the case that is in close contact with the outer surface of the fuel filter.

And a controller electrically connected to the heating part of the heating block and controlling a heat generation temperature of the heating part while applying power to the heating part.
The method of claim 1,

The heating unit is a heating system of a fuel filter for a diesel engine, characterized in that any one of urethane rubber heating wire, heating film or ceramic heating element.
The method of claim 1,

The case is a heating system of a fuel filter for a diesel engine, characterized in that formed of any one of stainless steel, plastic resin, or monolium.
The method of claim 1,

The controller is connected to the battery of the diesel engine, the operating voltage of the controller is set to be greater than the rated voltage of the battery within the generator voltage range of the battery, the voltage applied from the battery when the diesel engine is running The heating system of a diesel engine fuel filter, characterized in that the power is applied to the heating unit when the operating voltage or more.
The method of claim 1,

The controller is connected to the ignition key switch of the diesel engine, when the ignition key switch is in the start-on state, the controller supplies a heating system for a diesel engine fuel filter, characterized in that for supplying power to the heating unit. .
The method of claim 1,

The heating block further comprises a temperature sensor, wherein the controller cuts off the power applied to the heating unit when the temperature detected from the temperature sensor is higher than the set temperature, characterized in that the heating system of the fuel filter for the diesel engine.
The method of claim 1,

The controller further comprises a vibration sensor, the controller is a heating system of the fuel filter for a diesel engine, characterized in that to apply power to the heating unit when the vibration of the diesel engine is detected by the vibration sensor.