KR100296644B1 - Apparatus for preheating fuel of vehicle - Google Patents

Abstract

PURPOSE: An apparatus for preheating a fuel of a vehicle is provided to reduce a contamination due to an exhaust gas by preheating a fuel supplying from a fuel tank to an engine to scheme a completed combustion at the engine. CONSTITUTION: A body(10) of a soot reduction apparatus is a bombe type and comprises an inlet(3) and an outlet(4). The inlet(3) for introducing a high temperature of cooling water via an engine is formed at a top side of the body, and the outlet(4) for discharging the cooling water to radiator is formed at a low side of the body(10), in which the cooling water is introduced to the inlet, is performed a heat exchange at the body and is discharged to radiator. A large/medium/small preheat vessels(2a,2b,2c) having each of fuel nozzle(1a,1b,1c) are contained at the body, and the each of fuel nozzle(1a,1b,1c) are connected to an exhausting port of an oil pump. A filter housing(5) is installed at a bottom side of the body and is connected to a discharging terminal of the fuel nozzle(1a,1b,1c). A solenoid valve is operated so that the fuel is passed optionally through the large/medium/small preheat vessels(2a,2b,2c).

Description

Vehicle fuel preheater

The present invention relates to a vehicle fuel preheating device which helps the complete combustion by preheating the fuel supplied to the engine by heat exchange with the coolant, and in particular, a vehicle having improved fuel preheating efficiency by selecting a fuel preheating time according to seasonal atmospheric temperature. A fuel preheater.

The fumes of automobiles contain harmful substances that pollute the air. Such automobile exhaust is mainly caused by incomplete combustion of fuel. Incomplete combustion of fuel is particularly severe in winter. This is because the temperature of the fuel entering the engine is low.

In this regard, researches for reducing vehicle smoke are being conducted at various angles. As part of such an effort, a fuel preheater using cooling water of JP-A No. 94-25038 is proposed. The temperature of the fuel varies from season to season. Therefore, the preheating temperature of fuel should be lower in summer than in winter. However, the prior art has a low preheating efficiency because it is impossible to control the preheating temperature and the preheating time of the fuel at the atmospheric temperature, which is seasonally different.

The present invention is to provide a vehicle fuel preheating device that can improve the preheating efficiency of the fuel by the adjustment of the fuel preheating time according to the atmospheric temperature according to the season.

The present invention is configured to be equipped with a fuel preheater on the cooling tube from the engine to the radiator to preheat the fuel with the heat energy of the supplemental water to be supplied to the engine.

The fuel preheater is configured to have three preheaters having different sizes in a cylindrical body having an inlet and an outlet so that heat can be exchanged with hot coolant while fuel is selectively passed according to the atmospheric temperature.

1 is a perspective view of a vehicle fuel preheater according to the present invention

2 is a longitudinal sectional view of a vehicle fuel preheater

3 is a layout view of a vehicle fuel preheater

4 is a longitudinal sectional view of the filter;

<Explanation of symbols for main parts of the drawings>

1a-c: Fuel nozzle 2a-c: Preheater

3: db inlet 4: outlet

5: filter 10: body

10a: solenoid valve 10b: injection pump

20: engine 30: oil tank

40: radiator

In FIG. 1, the smoke reduction device main body 10 is a bomb type, and the upper surface has an inlet port 3 through which the high-temperature cooling water flowing through the engine 20 flows in. There is an outlet 4 for discharging hot cooling water to the radiator 40.

In Fig. 2, each of the main body 10 has built-in large, medium and small preheating cylinders 2a-c with fuel nozzles 1a, b and c connected to the discharge port side of the oil pump. The filter housing 5 is connected to the discharge end of the nozzles 1a, b, and c.

The size of the preheating cylinders (2a-c) is divided into large, medium, and small in order to adjust the preheating time according to the external temperature. That is, when the outside temperature is high, the temperature may be increased only a little, so the fuel passes through the large preheating cylinder 2c, and when the outside temperature is low, the fuel must be quickly heated to pass the fuel through the small preheating cylinder 2a. In the spring or autumn, the medium preheater (2b) is operated to pass the fuel.

The selective fuel passage of the large, medium and small preheating cylinders 2a-c is realized by the solenoid valve 10a having a sensor function for sensing an external temperature on the oil pump. In summer, the solenoid valve 10a is operated so that the fuel passes through the large preheater 2c, and the solenoid valve 10a is controlled so that the fuel flows in the small preheater 2a during the winter season.

In FIG. 4, heat is absorbed from the high temperature cooling water passing through one of the preheating cylinders 2c and filtered before the heated fuel is supplied to the engine. The filter has a nickel-mesh filter 5a embedded in the filter housing 5 above and below the magnetic filter 5b, and is configured to filter impurities such as fine metal mixed with the preheated fuel and supply it to the engine.

The fuel preheater having such a configuration bisects the hose H ₁ connecting the engine 20 and the radiator 40 to the solenoid valve 10a-mounted separation engine 98 as illustrated in FIG. The inlet (3) of the main body 10 is connected to the branch end of the (8), and the hose (H ₂ ) connected to the outlet (4) is connected to the beginning of the hose (H ₁ ) using another branch pipe (9). Connect to the radiator 40 side.

The fuel nozzles 1a-c exposed out of the main body 10 are connected to the oil pump 30a, and on the fuel nozzles 1a-c, the fuel nozzles 1a- are in accordance with a timer for controlling the supply speed of fuel and a change in external temperature. Install solenoid valve 12 to selectively open and close c).

When the coolant rises to a predetermined temperature, such as 75 ° C, after the engine 20 is operated, the summer start 20a is operated to induce hot coolant to flow toward the preheater main body 10.

At the same time, in the fuel tank 20, when the outside air temperature is sensed by a sensor and reaches a proper temperature, the solenoid valve 12 opens the corresponding nozzle in the fuel nozzles 1a-c to preheat the cylinder belonging to the nozzle ( Allow fuel to pass through 2a-c).

The fuel in the preheating cylinders 2a-c is preheated to and from 55 ° C, which is advantageous for complete combustion by heat exchange with hot cooling water and then supplied to the engine.

As described above, the present invention may maximize the preheating efficiency of the fuel by supplying the engine after preheating the fuel to a temperature suitable for the atmospheric temperature by varying the heat exchange time with the high temperature cooling water according to the atmospheric temperature.

Claims (1)

A main body 10 having an inlet port 3 connected to a coolant pipe from the engine to the radiator and an outlet port 4 for injecting a high temperature coolant and a discharge port 4 which deprives heat while circulating inside and flows to the radiator; Large, medium and small preheating cylinders 2a-c built in the main body 10 with 1a-c); Vehicle mounted to the oil pump (30a) characterized in that consisting of a solenoid valve (10a) for selectively opening and closing the fuel nozzle (1a-c) according to the temperature detection signal of the temperature sensor 13, which senses the external temperature Fuel preheater.

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