KR101290976B1 - Ethanol Temperature Rising System - Google Patents

Abstract

The present invention relates to an ethanol temperature rise system, comprising a fuel rail of an engine using ethanol fuel, a glow plug connected to the fuel rail, and an injector connected to the glow plug, wherein the glow plug is a fuel rail It provides an ethanol temperature raising system, characterized in that the temperature of the fuel flowing from the rising to pass to the injector.

Ethanol, temperature, rise, system, glow plug

Description

Ethanol Temperature Rising System

1 is a perspective view showing the structure of the present invention ethanol temperature rise system.

2 is a simplified schematic drawing of the critical system of the present invention.

3 is an operational flowchart of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: fuel rail 20: glow plug

30: Injector 100: ECU

The present invention relates to an ethanol temperature rise system. More specifically, in an automobile using ethanol as a fuel, a glow plug is mounted on an engine and the glow plug increases the temperature of the ethanol at start-up so that the ethanol can be easily vaporized.

In modern societies where cars are widespread, interest in fuel prices is increasing day by day.

In response to the ever-increasing price of gasoline fuel, the development of vehicles using ethanol fuel is also active in North America.

By the way, the ethanol fuel has a high octane number, the output is good, but the ethanol has a characteristic that the evaporation is not well evaporated at low temperatures, if the evaporation is not good, the atomization does not properly start during the injection of ethanol fuel, it is difficult to start the problem. This is a problem that occurs equally in all vehicles using ethanol fuel.

Conventionally, in order to solve the above problems, the fuel injection amount is increased at start-up to start the engine in a very rich fuel injection state, but in this case, there is a problem that adversely affects the exhaust gas emission.

And even in this case there is a problem that often does not start properly in the low temperature winter.

On the other hand, another method used to solve the above problems is to make a separate small gasoline fuel tank in the engine room and apply it to the vehicle.

However, in this case, a lot of space is required for the engine room, and there is a risk of fire in the event of a collision, in particular, there is a problem that results in an increase in the part cost.

The present invention has been invented to solve this problem, to provide an ethanol fuel temperature raising system that can be easily vaporized fuel at the initial start-up by providing a device for increasing the temperature of the ethanol fuel in a vehicle using ethanol fuel There is.

In order to achieve the above object, the present invention comprises a fuel rail of an engine using ethanol fuel, a glow plug connected to the fuel rail, and an injector connected to the glow plug, wherein the glow plug is introduced from the fuel rail. It provides an ethanol temperature raising system, characterized in that to raise the temperature of the fuel to be delivered to the injector.

The present invention also provides an ethanol temperature raising system comprising a step of turning on an ignition switch, a temperature and fuel information determining step, a lamp on step, and determining whether a glow plug-on is required.

In addition, when it is determined that the glow plug is required in the glow plug-on determination step, it may include a glow plug operation time determining step, a glow plug-on step and a fuel vaporization step.

The glow plug may not be turned on in the determining whether the glow plug needs to be turned on, or may be configured to undergo a ramp-off step after the fuel vaporization step.

And when the driver starts between the ramp on stage and the ramp off stage, the starter relay may be off until the ramp off stage, and the glow plug off only after the engine idle is stabilized even after the ramp off stage. It can be a step.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a perspective view showing the structure of the ethanol temperature rise system of the present invention, FIG. 2 is a schematic diagram briefly showing an important system of the present invention, and FIG. 3 is an operational flowchart of the present invention.

As shown in FIG. 1, the ethanol temperature raising system of the present invention includes a fuel rail 10, a glow plug 20 connected to the fuel rail 10, and an injector connected to the glow plug 20 of an engine using ethanol fuel. 30).

In addition, as shown in an enlarged view of the portion “A” of FIG. 1, a heating rod 22 is provided inside the glow plug 20 to increase the temperature of the fuel introduced therein. The heating rod 22 may have a shape of a heating coil or a heating rod ( 22 may have a shape in which the heating coil is connected.

The ethanol temperature raising system of the present invention having the structure as described above injects fuel after the glow plug 20 raises the temperature of the ethanol fuel flowing from the fuel rail 10 through the process of various steps described below. To 30).

Meanwhile, as shown in FIG. 2, the ethanol temperature raising system of the present invention is based on information obtained by the ECU (Electronic Control Unit) 100, which is an engine control unit, from the temperature sensor 200 and the fuel sensor 300. 410, a glow plug 420, a lamp 430, and an injector 440.

The temperature sensor 200 includes an engine temperature sensor (WTS: WATER TEMPERATURE SENSOR) 210, an oil temperature sensor (OTS: OIL TEMPERATURE SENSOR) 220, and an air temperature sensor (ATS: AIR TEMPERATURE SENSOR) 230. It includes.

In addition, the fuel sensor 300 is a sensor for measuring the content ratio of ethanol used as fuel as the ethanol sensor.

Referring to the operation flowchart of the present invention as shown in Figure 3 as follows.

The ethanol temperature raising system of the present invention includes a first step 500 in which an ignition switch is turned on, a second step 510 of determining temperature and fuel information that proceeds after the first step 500 passes, And a third step 520, which is a lamp on process that proceeds after the second step 510 has elapsed, and a fourth step 600 for determining whether a glow plug on is required. do.

And a fifth step 610 of determining a glow plug operation time when it is determined that a glow plug is needed in the fourth step 600, the determination of whether the glow plug on is necessary. A seventh step 620 in which a glow plug is turned ON for a time determined in the fifth step 610 and a fuel vaporization step in which fuel is vaporized by the sixth step 620. Step 630 may be configured.

On the other hand, it is determined that the glow plug does not need to be turned on or the glow plug needs to be turned on in the fourth step 600, which is a step of determining whether the glow plug on is necessary, After going through the seventh step 630, it is configured to go through the eighth step 700 of the lamp OFF (LAMP OFF).

When the lamp is turned off after the eighth step 700 in which the lamp is turned off, the ninth step 710, which is a driver starting step in which the driver starts, is performed, and the starter relay is performed by the ninth step 710. A tenth step 800, which is a starter relay on step, is turned on, and an eleventh step 810, which is a start-up step, is started by the tenth step 800.

In addition, after a predetermined time elapses after the eleventh step 810, which is the start-up step, the engine idle is stabilized, and a twelfth step 820 becomes a glow plug. A thirteenth step 830 in which GLOW PLUG OFF is performed is performed.

Therefore, there is an effect of allowing the glow blog to be turned off only after the engine idle is stabilized so that the engine state can be optimally maintained.

Meanwhile, when the driver starts the motor operation between the third step 520 at which the lamp is turned on and the eighth step 700 at the lamp off, the step 3-1 900 is performed. In operation 3-2, the starter relay is turned off (STARTER RELAY OFF) until the eighth step 700 of the lamp OFF is performed. In operation 910, a third step 920 of determining whether the lamp is turned off is performed.

If it is determined that the lamp is turned off in the third step 920, since the third step 900 in which the driver is already started is in progress, the ninth step 710 which is the driver starting step. It is connected to the tenth step 800, which is the starter relay on step without going through).

Therefore, according to the present invention, even if the driver starts before the eighth step 700, the driver can respond appropriately.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, the present invention has the effect of raising the temperature of the ethanol fuel by using a glow plug.

In addition, even if the driver starts while the lamp is on, the starter relay is kept off until the lamp is turned off.

In addition, the glow blog is turned off only after the engine idle is stabilized, so that the engine state can be optimally maintained.

Claims (6)

delete Turning on the ignition switch; A temperature and fuel information determination step of measuring the temperature of the fuel and the ethanol content of the fuel; A lamp on step; Determining whether glow plug-on is required; And, When it is determined that the glow plug is necessary in the step of determining whether the glow plug on is necessary, it comprises a glow plug operation time determining step, a glow plug on step and a fuel vaporization step, The glow plug does not need to be turned on in the step of determining whether the glow plug on, or after the fuel vaporization step is configured to go through a ramp off step, And the starter relay is in an off state until the ramp is turned off when the driver starts the ramp between the ramp on and ramp off stages. delete delete delete The method according to claim 2, And a glow plug-off step only after the engine idle is stabilized even after the ramp-off step.

Images