JPS6114429A - Turbocharger for multicylinder engine - Google Patents

Abstract

PURPOSE:To make connection between exhaust pipes performable ever so easy even in the case where a turbocharger is attached to whichever positions in and around an engine, by installing plural pieces of exhaust inlets in a turbine housing, while making exhausts to be entered from each of these inlets so as to be put together inside the turbine housing. CONSTITUTION:Exhausts being led into a turbine housing 2 each from exhaust inlets get together as one body inside a turbine housing 2 and, after rotating turbine wheel 17, are discharged to an exhaust muffler by way of an exhaust outlet installed in the central part. The turbine wheel 17 operates a coaxial compressor whereby pressure suction air is fed to each of cylinders 8 and 9 by way of the suction pipe provided with a carburetor.

Description

[Detailed Description of the Invention] LiL Five Five-Face Power■ The present invention aims to increase the filling efficiency and increase the output of a multi-cylinder engine such as a motorcycle by pressurizing the intake air by using the exhaust energy of the engine. Is there a PA in the turbocharger installed in the car? It's from lb.

Conventionally, turbochargers have often been used as engines for automobiles or motorcycles. A turbocharger uses engine exhaust energy to turn an exhaust turbine and uses this power to drive a compressor to precompress engine intake air.The exhaust pipes from each cylinder of the engine - is connected to the turbine of iJ'3, and the exhaust gas is discharged from the turbine to the muffler through the C exhaust.

Turbocharging for the engine (・-take (= J position (
6 is determined by considering the effective use of space in the vehicle in which the engine is to be installed, the structural relationship with the vehicle body, or the overall balance of the engine. The exhaust pipes from each cylinder are then combined into one pipe before entering the turbine, and this single exhaust pipe is connected to the turbine housing, so that the exhaust pipes from each cylinder are connected to the turbine housing. The housing has only one entrance.

Li1i is about to open up, but with a conventional turbocharger like this, depending on the mounting position, the trachea of the 1st no. 1 trachea from each cylinder can sometimes be difficult to route. In one row, place the turbocharger as close to the cylinders as possible, such as in the space between each cylinder of a V-type engine, at the same level as the IC.
The heat loss that occurs before the exhaust gas reaches the turbine, resistance 10
In order to minimize losses and improve efficiency and response, it is a good idea to collect the exhaust pipes into a single pipe within a short distance from the lift platform and cylinder to the turbine and connect this to the turbine. Therefore, the mounting position of the turbocharger V-jar was often restricted due to the exhaust pipe layout.

The present invention improves the conventional turbocharged V- as mentioned above, and improves the exhaust pipe arrangement. The purpose is to obtain a turbo charge 17- that is not caused by the turbo charge.

For this reason, the turbocharger V-jar of the present invention has a plurality of exhaust inlets in the turbine housing so that the exhaust gas entering from each of these inlets is collected and concentrated inside the turbine housing.

Since the turbocharger of the present invention has a plurality of IJI air inlets in the turbine housing as described in (G),
The 111 trachea from each cylinder can be individually connected to each exhaust inlet. Therefore, the placement of the exhaust pipe will not be difficult depending on the position of the C turbo engine, and conversely, the installation of the turbo engine will not be difficult due to problems with the tracheal piping. There are no restrictions on location.

Maru - 凰ichi counterfeit An embodiment of the present invention will be described below.

FIG. 1 is a side view of a turbo device 1 according to the present invention viewed from the turbine side, and 2 is a turbine housing. The turbine housing 2 has two exhaust inlets 3.
4 is provided. 5 Hiroshi 2r 1 goo 1-valve.

FIG. 2 shows a motorcycle 6 to which the turbocharged V-jar 1 of FIG. The turbocharger 1 is installed above the space between the cylinder 9 and the cylinder 9.

The exhaust pipe 10 of the 60-part cylinder 8 is connected to the exhaust port 3 of the turbocharger 1; : Exhaust pipe 1 of rear cylinder 9
1 are connected to the exhaust port 4 through n'J connections, respectively.

Figure m3 is a schematic diagram showing a vertical cross section of the engine and turbocharger arranged in this way, and in the figure, 12 indicates screws 1 to 1.
13 is a connecting rod, 14 is a crank pin, 15 is an exhaust valve, and 16 is an intake valve. The IJI air introduced into the turbine housing 2 during the IJI flow gathers and becomes one body inside the turbine housing 2, and when the turbine wheel 17 is rotated, it passes through the exhaust outlet 18 provided in the center. It is discharged to the exhaust muffler 19 (Fig. 2). The turbine wheel 17 operates a compressor, which will be described later, which is coaxial with the turbine wheel 17, and the intake air pressurized by the compressor is sent to the carburetor 2.
The air is supplied to each cylinder 8.9 through an intake pipe 21 with a 0 interposed therebetween.

Figure 4 shows a horizontal cross section of the turbocharger 1, and 1
It is a schematic diagram showing intake and exhaust pipes between this turbocharger 1 and each cylinder 8.9. As shown in the figure, the turbine wheel 17 is integrally connected to a combination twin bellows 23 via a drive shaft 22, and the turbine housing 2 is connected to a combo housing 25 via a center housing 24. ing.

The turbine housing 2 is connected to the U1 trachea 10.1 as described above.
1 is connected to each grip air port 26 of the front cylinder 8d5 and rear cylinder 9, and the lJ+air outlet [118 is connected to the knee t exhaust muffler.

The air intake 27, which is pulled in the center of the side of the combrella housing 25, is connected to an air cleaner (not shown), and the air introduced from the intake air 27 via the air cleaner is caused by the rotation of the impeller 23 It is compressed and pressurized by centrifugal force and sent to the intercooler 28.Then, from the intercooler 28, each intake pipe 211.2
12 and carburetors 201, 212 to the front air vJ8 and each intake air [ ] 29 of the rear cylinder 9.

In this embodiment, as shown in the figure, the turbine housing 2 is located behind the front cylinder 8 and in front of the rear cylinder 9, at a position sandwiched between the two cylinders 8.9, and close to the fitting 1198.9. Due to the arrangement or with two jJl air inlets 3.4, both cylinders 8.
9 can be easily connected.

This arrangement of the turbine housing 2 i(j (fl) is close to the cylinder 8.9, and since the running wind is blocked by the front cylinder 8, the cooling effect of the running air is strong, and the ambient temperature is relatively low. The location is high.Therefore, the amount of heat generated by the exhaust gas while flowing from the cylinder 8.9 to the turbine housing 2 is small.
Exhaust energy can be used effectively.

On the other hand, the compression housing 25 is
8.

Since the compressor is disposed at a position that extends laterally from the line connecting the numerals 9 and 30 and is located at a position where the cooling effect of the traveling wind is relatively large, as indicated by the arrow 30 in FIG. 4, the compression efficiency of the compressor is improved. In addition, the intercooler 28 is also arranged at the same position, and the intake pipes 211 and 212 circulate through even sides of air in 8°9 and
Since it is connected to the air intake r'29 of 8.9, the running wind 3
0 is these intercooler 28as and intake pipe 21
．． 222 and 7i+ to sufficiently cool the intake air, improving engine charging efficiency.

In this example, the turbocharger 11-1 is arranged in the J direction of 1. The efficiency of the turbine side and the efficiency of the compressor tree side are simultaneously increased in the direction 1.
i, 3-1! can be done.

As described above, in the present invention, a plurality of exhaust inlets are provided in the turbine housing, and the exhaust gases entering from each of these inlets are collected inside the turbine housing. Since the trachea 1-11 from each cylinder of the multi-cylinder engine is connected individually to each of the four inlets of the turbine housing, the turbocharger P- can be placed at any position near the engine. The exhaust pipe can be connected extremely easily even with the J'i pipe.

Therefore, the position of the turbocharged V-position is not limited by the difficulty of arranging the trachea, and, for example, the turbine can be placed between the front and rear cylinders of a V-type engine,'' Nbrelli said. J located jutting out to the both cylinder side bushes J;
It is possible to place a turbocharger (・- to improve the efficiency and responsiveness of the turbocharger, etc., by placing a turbocharger V・− at the 4-m position f=Jt). be.

[Brief explanation of drawings]

Fig. 1 is a side view of the turbocharger V1 according to the present invention, and Fig. 2 is a side view of the turbocharger V1 according to the present invention.
- A side view of the wheeled vehicle. Fig. 3 is a schematic longitudinal cross-sectional view of the engine and turbo engine 17 shown in Fig. 2, and Fig. 4 is a schematic horizontal cross-sectional view of the same. 1...turbocharger, 2...turbine housing, 3, 4...JJ+air inlet.

Claims (1)

[Claims] A turbocharger for a multi-cylinder engine, characterized in that a turbine housing is provided with a plurality of exhaust inlets, and exhaust gas entering from each of these inlets is collected inside the turbine housing.