JPS60201025A - Suction system structure of engine with pressure wave supercharger - Google Patents

Abstract

PURPOSE:To make the most use of the performance of a pressure wave supercharger, by sucking the air through an air cleaner whose mesh is coarse into the pressure wave supercharger so that the suction resistance may be reduced, and sucking the air discharged from the pressure wave supercharger into an air cleaner whose mesh is fine into an engine so that the cleaness of the air is further enhanced. CONSTITUTION:After the air sucked from the atmosphere is filtered by a first air cleaner 17 whose mesh is coarsed so that dust having, for example, a size of 60-80mum or more may be removed and therefore damage to a pressure wave supercharger can be avoided, the air is sucked from a suction introduction port into the pressure wave supercharger 4. After the sucked air that is pressurized in the pressure wave supercharger 4 is filtered by a second air cleaner 18 whose mesh is fine so that dust having a size of, for example, 20mu or below is removed so as not to hinder the performance of the engine, and then the air is cooled in an intercooler 16 and is sucked into the engine 1.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to the structure of an intake system in an engine equipped with a pressure wave supercharger, and particularly relates to the arrangement groove end of an air cleaner provided in the intake system.

(Prior Art) A pressure wave supercharger has been known as one of the superchargers for supercharging intake air to an engine (Japanese Patent Publication No. 38-1
See Publication No. 153>. This pressure wave supercharger includes a rotor that is rotatably supported in a case and has a number of partition walls arranged radially to form a number of small chambers, and an intake air intake formed in the case at one end of the rotor. The intake port and the intake outlet, and the exhaust inlet and exhaust outlet formed in the case on the other end of the When the intake air is drawn into the small chamber of the rotor, the exhaust gas is introduced into the small chamber from the exhaust gas 1'', and the air is compressed and accelerated due to the pressure difference between the two, and is then discharged from the intake outlet. By transmitting air pressure horn wave energy to the intake air, the intake air is supercharged, while
Some devices repeatedly perform scavenging by discharging the exhaust gas remaining in the small chamber from the IJI air outlet and introducing intake air into the small chamber from the intake inlet.

By the way, in the above-mentioned engine equipped with a pressure wave supercharger, when the intake negative pressure of the intake air taken into the pressure wave supercharger is large, the intake air of the pressure wave supercharger is small. As a result of insufficient air flow, exhaust gas gets mixed into the intake air, worsening the combustion performance of the engine, and at the same time, the cooling effect of the intake air into the pressure wave supercharger decreases. do. Therefore, in order to fully demonstrate the performance of the pressure wave supercharger, it is necessary to reduce as much as possible the intake resistance that causes the intake negative pressure.

As a measure to reduce this intake resistance by +1, the resistance of the air cleaner installed upstream of the pressure wave supercharging can be reduced. In particular, the scavenging effect of the exhaust gas by intake air and Ll- In order to obtain a cooling effect in the evening, 40 to 50% more air is taken in than in a normal engine.Relationship 1-1■ Since the accelerator is large, it is effective and desirable to reduce its resistance.However, On the other hand, even if air creep resistance is reduced, the air cleaner element becomes coarse, and the intake air is not sufficiently purified, resulting in a relatively large amount of dust entering the engine. If inhaled, engine performance will be affected.

(Objective of the Invention) The present invention has been made in view of the above points, and the object of the present invention is to provide a J3 engine equipped with a pressure wave supercharger as described above to meet the demands from the pressure wave supercharger. In order to meet the demands from the engine, we installed two air cleaners to reduce intake resistance and purify the intake air. The purpose is to prevent problems with engine performance.

(Structure of the Invention) In order to achieve the above object, the solving means of the present invention transmits pressure wave energy of 1 atmosphere to the intake air as the rotor rotates as described above to supercharge the intake air (j). In an engine equipped with a pressure wave supercharger, the intake inlet of the pressure wave supercharger is communicated with the air intake through a coarse air cleaner, and the air intake discharge [1] is connected to the air creep gap 1 of the pressure wave supercharger. It is configured so that it passes through the engine through the air cleaner.

As a result, by inhaling air into the pressure horn wave supercharger through a coarse-mesh cleaner, it is possible to maintain the cleanliness of the intake air to the horn wave supercharger while maintaining its intake resistance. While keeping the intake air as small as possible, the intake air discharged from the pressure wave supercharger is sucked into the engine through a fine-mesh air cleaner. I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I'I''I'm increasing the amount of melon and removing relatively large dust.

(Effect of the invention) Therefore, according to the present invention, in a pressure wave supercharging engine, intake air is drawn into the pressure wave supercharging unit through a coarse air cleaner to reduce the intake resistance. However, since the intake air discharged from the pressure wave supercharger is drawn into the engine through a fine-mesh air cleaner to improve the cleanliness of the intake air, the performance of the pressure wave supercharger can be fully demonstrated. At the same time, it is possible to reliably remove relatively large dust particles and prevent them from interfering with engine performance.Moreover,
The above two air cleaners can be easily integrated into one.
It is possible to reduce the size of the device, and it also eliminates restrictions on installation space.

(Example) Hereinafter, embodiments of the present invention will be explained based on the drawings.

1 to 3 show a first embodiment of the present invention, and 1 is a first embodiment of the present invention.
-A four-cylinder engine with four cylinders 1a to 1d on the right, 2 has an upstream end that is open to the front, and a downstream end that opens to the engine 1's Aiki III 1a to 1d through branch passages 2a to 2d. An intake passage 3 is a flow 92 that supplies intake air to each cylinder 'l a to 1d of the engine 1, which opens to the air 1 of the engine 1 through branch passages 38 to 3d to Ha to 1d at the downstream end. is a passageway through which 4j1 air from each cylinder 1a to 1d of 1 carrot 1 is discharged directly to the atmosphere.

Reference numeral 4 denotes a pressure wave supercharging system which is disposed across the intake passages 2 and 1) and the air passage 3, and is rotationally driven by the engine 1.
The pressure wave supercharger 4 is shown in FIG.
It has a rotor 6 rotatably supported within a case 5, and a number of partition walls 7, 7 are provided around the outer periphery of the rotor 6.
... are arranged in an open pattern, and J:
There are many small chambers 8.8 in the circumferential direction on the outer periphery of the rotor 6.
is formed. An intake inlet 9 and an intake discharge [110] are formed in the case 5 at one end of the rotor 6. is the pressure wave supercharger 4 in the intake passage 2
There is communication C on the downstream side. Further, in the case 5 on the other end side of the rotor 6, an exhaust gas introduction [111] and an exhaust gas discharge n i 2 are formed (J-3, each with an exhaust passage 3
Pressure wave supercharging (four upstream and downstream) is passed through. However, as the taro rotates, a high pressure loss is introduced into the small chamber 8 where the low pressure intake air is trapped.
11, a pressure wave (compression shock wave) is generated due to the pressure difference and propagates inside the small chamber 8, and 1 no 1 pressure wave energy is transmitted to the intake air.The intake air is compressed, The air is accelerated and discharged from the hair suction and discharge port 1O to supercharge the intake air, and then the exhaust gas flowing into the small chamber 8 is discharged from the exhaust discharge port 1.
The structure is such that the suction air is repeatedly drawn from the small chamber 8 through the air introduction port 9 and the exhaust air is scavenged. Here, the amount of intake air into the pressure wave supercharging 1 m 4, that is, the amount of intake air into the engine 1, is determined to be sufficient to scavenge the exhaust air by suctioning the intake air. In order to cool the engine in one minute, the air intake amount is set to 1/1.0 to 150% compared to the intake air amount of a normal engine without a pressure wave supercharger.
In Figure 2, 13 is a compression pocket recessed in the tray link side of the case 5 on one end side (intake side) of the Ll-6 and the intake 1BI output of 110 in the direction of the daily rotation (direction of the arrow in the figure). This is to increase the supercharging effect (!) in the low speed range of the rotor 6 (engine 1). Also, 1/I is to increase the supercharging effect (! on the exhaust side) of the rotor 6 (!! Case 5 has J3 and 1J [gas pocket recessed on the leading side in the rotor rotational direction of the air inlet 11, 15 is an expansion recessed in case 5 on the intake side and recessed on the leading side of the rotor rotational direction of the intake outlet 10. Pocket, both pockets 1
4. Due to the interaction of '15, the entire operating range C low pressure of engine 1 is turned to low pressure (1j1).

Furthermore, 16 is an air-cooled intercooler installed downstream of the pressure wave supercharger 4 in the intake passage 2, and is used to absorb the dry intake air supercharged from the Etsunoha supercharger 4. There is something that cools the vehicle by exchanging heat with the outside air (driving wind).

Therefore, a rough first air cleaner 17 of [1 is interposed in the flow of the above-mentioned J: pressure wave supercharger 4 in the intake passage 2, which is equipped with a pressure wave supercharger 4. C1
The air intake inlet 9 of the pressure wave supercharger 4 is connected to the air inlet 9 through the 11th cleaner 7. on the other hand,
Intake passage 2 pressure wave supercharger 4 + flow one intercooler'
In the 16L flow, a 21st aculina '18, which is the same as the above-mentioned 1st aculina 17J: Rimo I, is interposed.
The air intake/discharge port 10 of the pressure wave supercharger 4 is connected to the engine through the second near cleaner 18.

The first air cleaner J3 and the second air cleaner 17, 18 are integrally formed as shown in FIG. In other words,
Upper and lower ζ half-shaped case member 1 that is joined to each other on the upper and lower sides
9.20 and both sides! 7119.

20 into the first chamber 21 and the second chamber 22) "The partition member 23 that partitions the space between -24
and a fine second L element 2F5 of, for example, 20μ or less installed in the second chamber 22, and the first chamber 21.
A first inlet 20 and a first outlet 27 opened at 19°20 in the case 1-10 so as to communicate with the flow of the first member 1-24, respectively, and the second The second inflow 1-12ε'S J3 and the second outflow L were connected to the 1-1-1 upstream of the 2nd section 1-1 noment 25 of the chamber, respectively, in order to communicate with the upstream side of the 2nd section 1-1 noment 25 of the chamber. 29 and T
: A1, the above-mentioned first inflow D 2 (intake air (popular) flowing in from 5 is filtered through the first lumen 24 with a rough mouth, and then is discharged through the second outflow L29, thereby forming the 11th inflow D2).
It constitutes the accrep 17 and the second inlet 2
The intake air flowing in from 8 is passed through the fine second element 2.
The 21st acleaner 18 is constructed by filtering the water through the filter 5 and then flowing it out through the second outlet [129].

Therefore, in J3 of the first embodiment, the intake air taken in from the air is filtered by the coarse 11th acleaner 17 (first element 24) to prevent damage to the pressure wave supercharger 4. For example, after dust of 60 to 80μ or more is removed, it is sucked into the pressure wave supercharger 4 from the intake air introduction D9, and the pressure wave of the exhaust air is transferred to the pressure wave supercharger 4 to the intake air (intake air). The intake air is pressurized by the transfer of energy and is discharged from the intake outlet 10.Then, this pressurized intake air is passed through the fine-mesh 21st acleaner 18 (
After being filtered by the second element 25) and removing even dust of, for example, less than 2 oli, so as not to impede engine performance, the air is cooled to an appropriate humidity by an intercooler 1G, and then sucked into the engine 1.

In that case, since the intake air into the pressure wave supercharger 4 is performed through the first air cleaner 17 with coarse mesh, the pressure wave supercharger 4 can be prevented from being damaged by dust. The intake resistance of the intake air to the pressure wave supercharger 4 becomes small, so that the scavenging and cold N by the intake air of the pressure wave supercharger 4 are sufficiently performed, and the performance of the force wave supercharger 4 is not fully demonstrated. . However, the subsequent suction of the supercharged air from the pressure wave supercharger 4 into the engine 1 is carried out by the fine-mesh 21st cleaner 1.
Relatively large dust particles are removed reliably and do not interfere with engine performance.

In addition, the first a3 and the second second I near cleaner 17'18 can be easily formed into an integrated structure as shown in FIG. 3, and their size can be reduced. The installation space can be made more advantageous.

4 and 5 are the second and third embodiments of the present invention, respectively.
This embodiment is designed to assist the cooling performance of the intercooler 16, and descriptions of the same parts as in the first embodiment will be omitted. In the second embodiment shown in FIG. 4, one end of C1 opens forward facing the rear surface of the intercooler 16 with respect to the upstream opening end of the intake passage 2, that is, the air intake port 30, and the other end opens forward. An auxiliary air intake 3'1 connected directly downstream of the air intake 30 of the intake passage 2 is installed. A plurality of normally closed butterfly valves 32, 32... are installed in the wind ml Lf-, and a plurality of normally closed butterfly valves 32, 32... are installed at the connection part of the auxiliary air intake 31 to the intake passage 2 when the vehicle stops A switching valve 33 is installed to open the auxiliary air intake port 31.
) Dashino desu. As a result, when the vehicle is running (1 o'clock, the butterfly valve 32, 32...
By passing the running air from the intercooler 16 through the butterfly valves 32, 32, etc., sufficient cooling performance of the intercooler 1G is ensured, while when the vehicle is stopped, 1. - Set the switching valve 33 to "1".
1, by taking intake air from the auxiliary air intake 1'3'1, the intercooler 16 is cooled by the intake flow of this intake air, and the cooling performance of the air-cooled intercooler 1G when the vehicle 1ε1[ t) There is a way to ensure that C.

Further, according to FIG. 5, in the third embodiment, a second air cleaner 18' is disposed within the first air cleaner '17' on the upstream side of the first air cleaner 24', so that the air flows into the S first air cleaner 17'. By cooling the high-humidity supercharged intake air flowing through the 21st air cleaner 18' with the flowing intake air, the cooling performance of the intercooler 16 is assisted and the cooling performance of the supercharged intake air is increased. This is what I did.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention, and FIGS. 1 to 3 show the first embodiment, FIG. 1 is an overall schematic diagram, and FIG. 2 shows pressure horn wave supercharging with the rotor expanded. Schematic diagram of the machine, 3rd
The figure is a perspective view of the integrated type 1 accrep, and FIG. 4 and FIG. 5 are views corresponding to FIG. 1, respectively, corresponding to the second embodiment and the third embodiment. 1... Engine, 2... Intake passage, 3... Exhaust passage, 4... Pressure horn wave supercharger, 5... Case, 6...
- Rotor, 7... Partition wall, 8... Small chamber, 9... Intake inlet, 1o... Intake discharge port, 11... Exhaust inlet, 12... Exhaust discharge fco, 17. 17'...1st
Air cleaner, 18.18'...Second air cleaner.

Claims (1)

[Claims] (1) A rotor that is rotatably supported within a case and has a number of radially arranged partition walls forming a number of small chambers, and an intake inlet and an intake outlet formed in the case at one end of the rotor. The rotor has an exhaust inlet 33 and an exhaust outlet formed in the case on the other end side, and supercharges the intake air by transmitting n-horn wave energy of the exhaust air to the intake air as the rotor rotates. If you have a J3 engine equipped with a pressure wave supercharger, the air intake inlet of the pressure wave supercharger is
A pressure wave supercharger (=l engine Intake system structure.