WO1986000959A1

WO1986000959A1 - Supercharger for internal combustion engine

Info

Publication number: WO1986000959A1
Application number: PCT/JP1984/000374
Authority: WO
Inventors: Sumio Takada
Original assignee: Mituoka, Mitinari; Mituoka, Tokunari; Motoyama, Akinari
Priority date: 1984-07-23
Filing date: 1984-07-23
Publication date: 1986-02-13

Abstract

A supercharger for an internal combustion engine provided on, for example, an automobile. The technical subject of the supercharger of the present invention is to make up for the shortage of air sucked by the vacuum in a cylinder by an air supply fan (1). To this end, a discharge tubular portion (11) is formed on a casing (2) of the air supply fan (1) driven by an electric motor and is fitted with one of the openings of a duct (15) with a predetermined air gap (19) kept in relation to the outer peripheral surface of the discharge tubular portion (11).

Description

Description Overlined internal combustion engine

Technical field

The present invention relates to an internal combustion engine equipped in an automobile or the like.

Background art

Recently, automobiles have been equipped with exhaust turbine driven overlined machines. This exhaust turbine drive line has an exhaust turbine installed in the exhaust gas path, uses the power of the exhaust gas to convert the exhaust turbine, and the rotation of the exhaust turbine causes the engine's intake system path to rotate. The compressor, which is installed in the building, is driven and pressurized to obtain high output. However, this turbocharger driven by an exhaust gas turbine (hereinafter abbreviated as “turbo”) is originally equipped for applications that operate continuously for a long period of time under constant rotation and constant load conditions, such as in aeronautics and large tankers. It has excellent performance under such conditions. It is unsuitable for engines such as automobile engines in which the number of turns changes significantly due to repeated starting, running, and stopping. In other words, since the turbo has a compressor in the intake system, the resistance of intake air to be increased by the cylinder's food pressure increases, and the turbo is installed in the exhaust system. Exhaust turbine increases exhaust resistance. The negative effects of the turbocharger and the exhaust system only become effective when the engine speed reaches or exceeds 300 rpm Rm (80 to 100 Oknih per hour). It is canceled because it becomes II above. However, the engine is not imaged at such a low speed during normal driving, so the minus is larger. Therefore, by installing the turbo, conversely, the output decreases and the fuel consumption decreases.费 It has caused a decline.

Disclosure of the invention

The present invention provides an output and fuel efficiency improvement at both normal driving and high speed driving. The purpose of the present invention is to provide an internal combustion engine that is capable of realizing an exhaust gas, and is provided with a lined air fan and a duct driven by an electric motor, and supplies air for a combustion engine from the lined air fan through the duct. A discharge cylinder portion is formed in a casing of a lined air fan, and one opening of a duct is formed in the discharge cylinder portion with respect to an outer peripheral surface of the discharge cylinder portion. When the amount of air supplied from the air supply fan to the internal combustion engine is excessive, the excess air is released from the above-mentioned air gap, and the EI When the amount of air supplied from the air supply fan is insufficient for the rotation, the air can be sucked from the gap by the suction force of the internal combustion engine.

That is, the supercharger according to the present invention is completely different from the conventional turbocharger, in that a low-pressure air is supplied to the combustion engine by driving a blank air fan by a battery of an automobile or the like, and the internal combustion engine The cylinder's negative pressure and the air supplied by the air supply fan send air (low pressure) sufficient to completely burn the fuel to the engine, and the amount of air supplied from the line air fan (line) When the air fan and the amount of air blown by the cylinder negative pressure) no longer match the cultivation of the internal combustion engine, the air is sucked and exhausted through the air gap between the outlet of the air supply fan casing and the duct opening. This is to maintain balance. Thus, the turbocharger of the present invention is completely different from a turbocharger, in view of the fact that the suction air generated by the negative pressure in the cylinder is not enough to completely burn the fuel, and the insufficient air is removed. However, it is intended to make up for this by supplying extremely low-pressure air to the electric air-lined fan, thereby achieving a surprising effect. In other words, before and after the overlined machine is equipped, the output will be significantly different, and the fuel economy will also differ by 30 to 40%. In addition, the exhaust was black smoke before the equipment, but became light purple immediately after the equipment and became transparent immediately.

_ ΟΜΡΙ

WIPO — Amazing impeachment can also be obtained in terms of harm prevention. In particular, this effect is greater when low-pressure air is sent than when high-pressure air is sent from the air supply fan. No. This difference appears as a difference in the burden on the internal combustion engine. In addition, the overlined machine of the present invention drives the air supply fan by means of an electric motor, so that even when the fuel engine is running at low speed, the air can be efficiently lined up. During a face roll, the compressor does not function due to insufficient output of the exhaust turbine, and the blades warp to prevent the intake air from obstructing. In other words, the overly-lined Kishi can achieve the above-mentioned excellent effects even at low speeds, and this point is also significantly different from the turbo. Further, the overlined machine of the present invention, as described above, discharges the casing of the lined air fan when the amount of air supplied from the lined air fan does not balance with the rotation and rotation of the internal combustion engine. The air is sucked and exhausted through the gap between the section and the duct opening to automatically maintain the balance. \ Excessive air phenomenon at low speed (knocking etc.) and air depletion at high speed (supercharged The effect of the equipment does not occur), and the effect can be exhibited in a wide range from low speed to high speed.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an overall perspective view of one embodiment of the present invention, FIG. 2 is an enlarged exploded perspective view of an essential part thereof, FIG. 3 is an attached state diagram thereof, and FIGS. It is.

The best form for carrying out KIKI

The present invention will be described based on an embodiment.

FIG. 1 is an overall perspective view of an embodiment in which the present invention is applied to a turbocharger for a gasoline engine of an automobile, FIG. 2 is an enlarged exploded perspective view of a main part thereof, and FIG. FIG. In these figures, reference numeral 1 denotes an air supply fan, which is erected from the cylindrical mounting base 3 of the casing 2 內 The center hole of the motor built-in impeller 5 is fitted to the bolt 4 and screws 6 are tightened. The air supply fan 1 is attached to the engine room of the automobile by a screw 7 so as to be freely attached. Reference numeral 8 denotes a wire mesh for the intake port 9 of the air supply fan 1 and is attached and fixed by screws 10 1 is a discharge cylinder section provided at a lower portion of the casing 2, and serves to suck air sucked from the intake port 9. Discharge. In this case, the cylindrical column fitting 3 acts as a guide so that the air sucked into the casing 2 by the rotation of the impeller 5 can smoothly reach the discharge port 11 along the outer periphery. A narrow cylinder 12 having a larger diameter than the discharge cylinder 11 is fixed to the outer peripheral surface of the discharge cylinder 11 via a spacer 13. The opening at one end of the duct 15 whose one end 14 has a large diameter is fitted to the second. The other end 16 of the duct 15 is fitted to an intake port 18 of an air cleaner 17 (see FIG. 3) of the automobile. A gap (see FIG. 2) 19 between the outer peripheral surface of the discharge cylinder portion 11 and the inner peripheral surface of the narrow cylinder 12 serves as an air intake / exhaust port for the duct. In this case, the diameter of the discharge cylinder 11 and the diameter of the small diameter section 15a of the duct 15 are set to be the same, and the air discharged from the discharge cylinder 11 does not diffuse and remains as it is. To go through Duct 15. The connecting portion 15b between the large-diameter end portion 14 and the small-diameter portion 15a of the duct 15 is formed on a tapered surface, and the duct-side end of the narrow cylinder 12 is discharged. When the duct 15 is fitted, the duct side edge of the narrow cylinder 12 contacts the tapered surface 15b when the duct 15 is fitted. So that the tip of the discharge cylinder 11 is in close contact with the tapered surface 15b so as not to block the intake / exhaust port 19. As a result, the intake and exhaust from the duct 15 can be performed smoothly. The impeller 5 is controlled by a controller (not shown) that detects the number of revolutions of the engine based on the number of ignitions of a spark plug and the like and controls the start according to the number of images. Start at around 700 rpm

OMPI

The crane It is designed to rotate at a constant speed (270 rpm). However, in the supercharger of the present invention, since the excess air is eliminated, the impeller 5 may be started simultaneously with the start of the engine. Further, the rotation speed may be controlled by the rotation speed of the engine.

The overlined vehicle according to the present invention is configured as described above. At the start of the vehicle, the impeller 5 is stopped by the controller, and only air by the cylinder and the negative pressure is supplied to the engine. Flow and the introduction of excess air is prevented. When the engine speed exceeds 700 rpm, the impeller 5 rotates in H direction, and extremely low-pressure air is sent from the lined air fan 1 to the air cleaner 17 in addition to the intake air due to the negative pressure inside the cylinder. Can be In this manner, the engine is supplied with sufficient air to completely burn the fuel by the negative pressure in the cylinder and the air blown by the lined air fan 1. When the rotational speed is just over 700 rpm, the required air is too small and the excess air phenomenon tends to occur, but in such a case, as shown in Fig. 4, a lined air fan Ventilation from 1 escapes through the intake / exhaust port 19 to the outside (because the air cleaner 17 and the duct 15 are filled with air), eliminating the adverse effects of excess air. In this case, since the portion between the large-diameter end portion 14 and the small-diameter portion 15a of the duct 15 is formed as a tapered surface at the intake / exhaust port 19, the air flows out smoothly to the outside. When the rotation speed rises further, the air from fan 1 flows as shown in Fig. 5. Furthermore, when the rotation speed increases and the amount of supplied air becomes insufficient with only the air blown from the lined air fan 1, the air is exhausted by the cylinder 內 negative pressure at the high speed rotation of the engine. As shown in Fig. 6, the air is sucked into the duct 15 from the intake / exhaust port 19, so that the intake air replenishes the shortage of air, and the air deficiency phenomenon at high speeds The occurrence is prevented. In this case, as described above, the diameter of the discharge cylinder 11 and the diameter of the small-diameter part 15a of the duct 15 are set to be the same, and the discharge cylinder 11

OMPI The air discharged from the tubing does not diffuse and keeps the flow velocity as it is, and proceeds along duct 15 1 (exhibiting the outside air suction action), and the large-diameter end 14 and small-diameter 15a of duct 15 Is formed on the Taber surface 15b having a small inflow resistance, so that the air is smoothly sucked into the duct 15. In this way, according to this super-lined machine, the extremely low-pressure air is sent by the electric lined air fan 1 in addition to the intake air by the negative pressure in the cylinder, so that the fuel is completely burned to the engine. As the amount of air supplied becomes sufficient, the mixture becomes closer to the stoichiometric air-fuel ratio of 1:15, which significantly increases the combustion impairment rate and feeds it into the cylinder. More than 96% of the fuel used will be burned (only 55 to 65% of a normal reciprocating engine burns). As a result, the power output will be greatly improved, the fuel consumption will be remarkable, and the revolutionary effect of extremely clean exhaust will be obtained. As a result, the supply of air by the air supply fan 1 causes a delay in fuel intake and a more uneven distribution of gasoline to each cylinder as compared to engines that are not equipped with the present invention. As a result, the problem such as engine fluctuation due to combustion imbalance between cylinders and uneven operation of the twin carburetor does not occur. In addition, the effect of reducing the amount of carbon can be obtained. In particular, since the lined fan drives the lined fan 1 by the electric motor, the above-described excellent effects can be obtained even at a low speed. In addition, when the amount of supplied air from the lined air fan 1 does not match the rotation of the engine by the intake and exhaust ports 19, intake and exhaust are automatically performed, and fuel is always supplied to the engine. Since sufficient air is supplied to completely burn the fuel, excellent results can be obtained at all speeds without controlling the rotation speed of the fan 1 according to the engine speed. You can get it. In addition, since this turbocharger can be detachably mounted, inspection and repair can be easily performed.

_ O FI Next, the lined machine of the present invention, which is set so that the lined air fan 1 is driven at a voltage of 12 V (truck is 24 V) at a constant cultivation of 2700 rpm, is applied to various vehicles. An experimental example equipped is shown. Note that the starting point of the lined kimono fan 1 was set at an engine speed of 700 rpm.

(The following margin)

As is clear from the above table, it can be seen that the provision of the overlined machine of the present invention can achieve a fuel saving of 30% or more on all roads regardless of the type of vehicle.

Although the above-described embodiment uses the electric-powered built-in impeller 5 for the air supply fan 1, a motor in which the electric motor and the impeller are separated may be used. Further, the above embodiment describes a supercharger for an automobile engine, but the supercharger of the present invention is not limited to this and can be applied to any internal combustion engine.

Industrial applicability

With this configuration, Kishiaki's internal combustion engine is capable of improving power, fuel consumption and exhaust over a wide range from low to high speeds. Compared to the fact that the conventional turbo is rather a negative factor in the low-speed range, it can be seen that the present invention's over-filled 璣 is remarkably superior. Moreover, the overlined air of the present invention sends extremely low-pressure air by an electric lined air fan, and does not send air at a high compression like a turbo. There is no burden. In addition, when the amount of air supplied from the air supply fan no longer matches the image of the internal combustion engine due to the gap between the discharge cylinder of the air supply fan casing and the duct opening, it is automatically sucked. Because the exhaust is exhausted and the balance is maintained, an excellent effect is obtained in that it is not necessary to control the Ml rotation speed of the air supply fan according to the rotation speed of the internal combustion engine. Therefore, it is suitable for use in internal combustion engines such as automobiles.

O PI

y IPO

Claims

The scope of the claims

(1) Equipped with a lined air fan and duct driven by an electric motor, the air for internal combustion is supplied from the lined air fan to the combustion engine via the duct. As a result, a discharge cylinder is formed in the casing of the air supply fan, and one opening of the duct is fitted in this discharge cylinder in a state in which a certain gap is maintained with respect to the outer peripheral surface of the discharge cylinder. If the amount of air supplied from the air supply fan is excessive with respect to the rotation of the fuel engine, the excess air is released from the air gap, and the amount of air supplied from the line air fan to the image of the internal combustion engine. The supercharging of the internal combustion engine is characterized in that when the fuel is insufficient, the insufficient air is sucked from the above-mentioned gap by the suction force of the internal combustion engine. -

(2) The lined air fan is a lined air fan that rotates at a constant speed. When the engine speed reaches a predetermined value, the electric motor is switched on and the lined air fan is driven to rotate. A supercharger for an internal combustion engine according to claim 1.

(3) The other opening of the duct is fitted to the intake port of the air cleaner, so that the supply air from the lined air fan is supplied to the internal combustion engine via the air cleaner. 3. The supercharger for an internal combustion engine according to claim 1 or 2.