KR100271098B1 - Fuel expense reduction device of vehicle - Google Patents

Abstract

PURPOSE: A reducing device for a fuel consumption ratio of a vehicle is provided to generate a high output regardless of a small amount of fuel supply through supplying external air to an intake manifold. CONSTITUTION: A device for reducing a fuel consumption ratio is formed by a negative pressure operating line(100) connected to an EGR(Exhaust Gas Recirculation) valve operating line(50) for obtaining a negative pressure generated at a front direction of a throttle valve(22); an upper valve body(110) having a negative pressure operation port(11) and an upper chamber(112); a lower valve body(120) combined to the upper valve body while interposing a diaphragm(130); a connector(140) combined to the surge tank while having an intake port(141) and a discharge port(142); a spool(150) fixed to the diaphragm for opening and closing the intake port and the discharge port; a compressing spring(160) elastically pushing the diaphragm for the spool to close the ports of the connector; and an adjusting bolt(180) combined to a cover(170) assembled on an upper portion of the upper valve body.

Description

Fuel economy reduction device of vehicle

The present invention generates a negative pressure in the surge tank during the high-speed operation of the vehicle to the intake device of the vehicle to additionally supply the outside air to the intake manifold, thereby exhibiting a relatively high output relative to the amount of fuel supplied thereby reducing fuel consumption. It relates to a fuel economy reduction device of.

Generally, crankshaft gains rotational force by high temperature and high pressure explosion force generated by ignition of spark plug after air and fuel are mixed and sucked into the cylinder of engine through intake manifold. I use it.

As such, a proper mixing ratio of fuel and air is required for supplying a mixer necessary for an engine of a vehicle, which has been solved by an electronically controlled fuel injection device.

That is, the fuel injection device is configured to mix the fuel injected from the injector of the fuel system into the intake manifold by supplying the outside air sucked from the intake system and the injection signal controlled by the control system to be supplied into the cylinder of the engine.

In other words, the control system calculates the amount of intake air detected by the air cleaner and various sensors such as the water temperature sensor, the intake temperature sensor, the throttle position sensor, and the like. A predetermined amount of fuel is injected into the intake manifold through an injector connected to the line.

At the same time, in the intake cylinder, the intake air passing through the air cleaner is introduced into the intake manifold through the open valve and the surge tank of the throat body to form a fuel and a mixer.

Thus, the mixer required for the conventional vehicle engine is supplied by adjusting the mixing ratio through the electronically controlled fuel injection device in accordance with the operating state of the engine.

However, when the opening amount of the throttle valve is opened largely to obtain a large output of the engine by the high speed operation, the amount of fuel introduced into the cylinder of the engine was larger than the amount of air introduced.

Therefore, when the accelerator pedal is pressed to obtain high power while driving, unnecessary fuel consumption is followed.

Therefore, the present invention generates a negative pressure in the surge tank during high-speed operation of the vehicle to allow the outside air to be additionally supplied to the intake manifold, thereby exhibiting a relatively high output relative to the amount of fuel supplied, thereby reducing fuel consumption of the vehicle. The purpose is to provide.

In order to achieve the above object, a specific means of the present invention, after introducing the outside air filtered in the air cleaner 10 into the throttle body 20, the air corresponding to the opening amount of the throttle valve 22 surge tank 30 In the air intake apparatus of a vehicle to be supplied to the intake manifold 40 through,

In order to obtain a negative pressure generated in front of the throttle valve 22 opened during the acceleration of the vehicle running, the negative pressure operation line 100 and one end connected to the EBR valve operation line 50, the other end of the negative pressure operation line 100 An upper valve body 110 having a negative pressure action port 111 and an upper chamber 112 connected thereto, and an upper valve body having a diaphragm 130 interposed therebetween to have a lower chamber 121 in the upper valve body 110. The lower valve body 120 coupled to the body, and the bottom surface of the lower valve body 120 is screwed to the suction port 141 for introducing outside air into the surge tank 30 and the surge tank in communication therewith ( 30 has a discharge port 142 for introducing outside air into the connector 140 screwed to the surge tank 30, the passage of the suction port 141 and the discharge port 142 of the connector 140 Fixed diaphragm fixed to the diaphragm 130 to open and close at the same time Pressing the pool 150 and the diaphragm 130 with a predetermined elastic force, the spool 150 to block the intake and exhaust ports of the connector 140, and the maximum amount of lifting of the spool 150 It characterized in that it comprises an adjusting bolt 180 for adjusting.

1 is a block diagram of a fuel and air supply system of an engine in which a fuel economy device of a vehicle according to an embodiment of the present invention is installed.

Figure 2 is an operating state of the fuel economy of the vehicle applied to an embodiment of the present invention.

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

20: throttle body 22: throttle valve

30: surge tank 40: intake manifold

50: EV valve operation line 100: negative pressure operation line

110: upper valve body 111: negative pressure action port

112: upper chamber 120: lower valve body

121: lower chamber 130: diaphragm

140: connector 141: suction port

142 discharge port 150 spool

160: compression spring 170: cover

180: adjusting bolt

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As illustrated in FIGS. 1 and 2, after introducing the outside air filtered by the air cleaner 10 into the throttle body 20, air corresponding to the opening amount of the throttle valve 22 is introduced through the surge tank 30. In the vehicle air intake device to be supplied to the fold 40,

EVR valve operation line 50 connecting the throttle body 20 and the EBR valve 70 (EGR: exhaust gas recirculation device) to obtain a negative pressure generated in front of the opened throttle valve 22 when the vehicle accelerates while driving. One end of the negative pressure operation line (100) is connected, and the other end of the negative pressure operation line (100) is connected to the upper valve body (110) having a negative pressure action port (111) and an upper chamber (112).

That is, when the throttle valve 22 is out of the range of the inlet 50a of the EV valve operation line 50 by stepping on the accelerator pedal (not shown), the EBR is set in the upper chamber 112 on the upper valve body 110 side. The negative pressure is acted on through the negative pressure operation line 100 connected to the valve operation line 50.

In addition, the upper valve body 110 has a lower valve body 120 coupled to the upper valve body 110 with the diaphragm 130 interposed therebetween to have the lower chamber 121.

Two suction ports 141 are screwed to the bottom surface of the lower valve body 120 to introduce outside air into the surge tank 30, and the outside air is introduced into the surge tank 30 screwed in communication therewith. A connector 140 having a discharge port 142 is provided, and air filters 145 and 146 which filter suction air are attached to the suction port 141 of the connector 140.

The spool 150 is fixed to the diaphragm 130 to simultaneously open and close the passages of the suction port 141 and the discharge port 142 of the connector 140.

In addition, the upper portion of the spool 150 has a short shaft portion 151 placed upwards to prevent the diaphragm 130 from being in surface contact with the lower end of the adjustment bolt 160 to be described later by the negative pressure in the upper chamber 112. Formed.

A cover 170 is screwed to the upper surface of the upper valve body 110, and an adjusting bolt 180 is screwed to the center of the cover 170 to adjust the maximum amount of lift of the spool 150. .

That is, as the adjustment bolt 180 is lowered, the height at which the spool 150 can rise is decreased, and as a result, the height at which the spool 150 can rise as the adjustment bolt 180 is raised is increased.

In addition, when the diaphragm 130 is pressed with a predetermined elastic force between the cover 170 and the diaphragm 130 and the negative pressure in the upper valve body 110 is not applied, the spool 150 is connected to the connector 140. Compression springs 160 for blocking the intake and exhaust ports 141 and 142 are provided.

The compression spring 160 is compressed by the diaphragm 130 is lifted upward in proportion to the load pressure applied in the upper chamber 112 of the upper valve body (110).

Reference numeral 2 is a water temperature sensor, 4 is a thermo valve, 5 is a fixing ring, 7 is a lock nut, 300 is an injector, 301 is an engine, 400 is a canister.

The operating state of this embodiment configured as described above will be described.

First, when the opening amount of the throttle valve 22 is small, that is, in a state in which the negative pressure does not act on the EBR valve operation line 50, the upper chamber 112 in the upper valve body 110 connected to the negative pressure operation line 100 is operated. The pressure is in the same state as atmospheric pressure.

Accordingly, the spool 150 is pressed downward by the elastic force of the compression spring 160 to simultaneously block the suction port 141 and the discharge port 142 of the connector 140 connected to the surge tank 30. )

This condition is the case where the engine is operated at the initial start-up or at a low speed, and at this time, the control of fuel supply and air intake is usually performed by an electronic automatic injection device.

On the other hand, when the road or high-speed driving that wants high output of the engine, the accelerator pedal is further stepped up to increase the output of the engine. In this case, as shown in FIG. 1, the inlet 50a of the EBR valve operation line 50 is exceeded. The throttle valve 22 is rotated as shown by the dashed-dotted line.

In this case, a negative pressure is applied to the inlet portion 50a of the EBR valve operation line 50, and this negative pressure is applied to the upper chamber of the upper valve body 110 through the negative pressure operation line 100 connected to the EVR valve operation line 50. And acts on (112).

Accordingly, the compression spring 160 is compressed as shown in FIG. 2 by the negative pressure applied in the upper chamber 112, and the center portion of the diaphragm 130 is lifted upward. At this time, the volume in the upper chamber 112 is reduced, and conversely, the volume of the lower chamber 121 is increased.

By lifting upward of the diaphragm 130, the spool 150 connected to the diaphragm 130 is also raised at the same time, and the amount of the spool 150 is increased in proportion to the negative pressure acting on the upper chamber 112 and the compression spring is increased. Inversely proportional to the constant value of 160, the maximum lift is limited by the adjustment bolt 160.

When the spool 150 is completed in this way, the suction port 141 and the discharge port 142 of the connector 140 are opened. At this time, the opening amount of the suction port 141 is increased by the increased movement amount of the spool 150.

As a result, the negative pressure in the surge tank 30 acts as an open suction port 141 while the new external suction air passes through the air filters 145 and 146 through the suction port 141 and the discharge port 142. After being sucked into, it is supplied to the intake manifold 40.

As such, when the accelerator pedal is stepped over a predetermined range to obtain a high output of the engine, new air is supplied to the intake manifold 40 at no load through the apparatus of the present invention, and the injector 300 is provided in the cylinder of the engine 310. The lean mixer is fed with fuel injected through the reactor.

That is, when the throttle valve 22 is opened beyond a certain rotation range (when negative pressure is applied to the negative pressure operation line 100), sufficient air is supplied to make the mixer lean, which is, at high speed of the engine, Compared to supplying air by opening the throttle valve 22 a lot (in this case, the consumption of fuel is increased), a large amount of air can be supplied even with a small opening amount of the throttle valve 22, so that a high output can be achieved even with relatively low fuel consumption. You can get it.

In addition, the combustion of the lean mixer has an advantage of reducing the generation of harmful gases such as carbon monoxide causing environmental pollution.

On the other hand, when the stepped amount of the accelerator pedal is reduced or decelerated in such a state so that the negative pressure does not act on the EBR valve operation line 50, the upper chamber (in the upper valve body 112 connected to the negative pressure operation line 100) The pressure in 112 is at atmospheric pressure.

Therefore, the spool 150, which is upwardly raised, is pressed downward by the elastic restoring force of the compression spring 160 to simultaneously block the suction port 141 and the discharge port 142 of the connector 140 connected to the surge tank 30. In this case, the outside air is supplied only from the air cleaner 10 side.

On the other hand, the present invention may be configured to connect the negative pressure operation line 100 to the braking power distribution device not shown in order to obtain the negative pressure in the upper valve body (110).

As described above, according to the present invention, when the accelerator pedal is pressed to obtain a high output requiring high speed rotation of the engine, the amount of air is increased compared to the amount of fuel supplied, thereby reducing the concentration of the mixer supplied to the intake manifold. High speed rotation of the engine is possible. That is, as a conventional engine, a large amount of fuel is supplied in proportion to the amount of intake air during high speed rotation of the engine, thereby providing sufficient output even with a small amount of fuel, thereby reducing fuel consumption.

Claims (1)

After introducing the outside air filtered by the air cleaner 10 to the throttle body 20, the air corresponding to the opening amount of the throttle valve 22 is supplied to the intake manifold 40 through the surge tank 30. In the air intake apparatus of a vehicle, In order to obtain a negative pressure generated in front of the throttle valve 22 opened during the acceleration of the vehicle running, the negative pressure operation line 100 and one end connected to the EBR valve operation line 50, the other end of the negative pressure operation line 100 An upper valve body 110 having a negative pressure action port 111 and an upper chamber 112 connected thereto, and an upper valve body having a diaphragm 130 interposed therebetween to have a lower chamber 121 in the upper valve body 110. The lower valve body 120 coupled to the body, and the bottom surface of the lower valve body 120 is screwed to the suction port 141 for introducing outside air into the surge tank 30 and the surge tank in communication therewith ( 30 has a discharge port 142 for introducing outside air into the connector 140 screwed to the surge tank 30, the passage of the suction port 141 and the discharge port 142 of the connector 140 Fixed diaphragm fixed to the diaphragm 130 to open and close at the same time Pressing the pool 150 and the diaphragm 130 with a predetermined elastic force, the spool 150 to block the intake and exhaust ports of the connector 140, and the maximum amount of lifting of the spool 150 Fuel economy reduction device for a vehicle, characterized in that it has an adjustment bolt 180 screwed to the cover 170 is installed installed on the upper portion of the upper valve body 120 to adjust.