JPS5867957A - Intake device of engine with turbocharger - Google Patents

Abstract

PURPOSE:To improve a supercharge effect of intake air, in an engine intake system, by reducing resistance of the intake air from an air cleaner to a turbocharger compressor. CONSTITUTION:An air cleaner 14 is directly connected to a suction port 13 of a compressor b2 in a turbocharger b, and an outside air intake port 20 of the air cleaner 14 is provided to a tangential direction corresponding to a direction of rotation of an impeller 12 in the compressor b2. Then a device is constituted in such a manner as to reduce resistance of intake air from the air cleaner 14 to the compressor b2. In this way, an intake system route from the air cleaner 14 to the compressor b2 is decreased, while the outside air, introduced from the outside air intake port 20, flows in a same direction as the direction of rotation of the impeller 12 in a casing 17, from there the air flows through in an element 18, and is smoothly introduced into a casing 11 of the compressor b2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intake system for a turbocharged engine.

A turbocharged engine has its intake system
Medium (= equipped turbocharger mount?
Ward: Therefore, an air cleaner is usually connected upstream of this compressor so that the intake air to the engine is supercharged.

Therefore, the supercharging effect of the intake air by the turbocharger 6 is determined by the supercharging pressure of the intake air and the intake resistance in the intake system. Since it is not possible to secure more than a predetermined amount regardless of the intake resistance, the magnitude of the latter intake resistance greatly influences the supercharging effect.

The present invention was made in view of the price issue 1.The purpose of the present invention is to reduce the intake resistance from the engine intake system to the compressor of the turbocharger at 441 V%, and to improve the supercharging effect of the intake air. It's about improving.

An example of the implementation of the present invention will be described from Drawing C: Motorcycle 4: Two intake systems for an engine equipped with a turbocharger. ! (N is the body frame, ml is the engine, and d is the turbocharger.

The above engine (1 is plural, for example, 4 Qi 1 @ (lLx)
t', and the exhaust ports (exhaust pipes 11 and 2) of each of the cylinders (a,) are connected to each other.

These exhaust pipes (2) each extend rearward from the exhaust port (1) to one side of the engine (a) and the vehicle body frame while being gently inclined upward.

The exhaust pipes 31 are gathered together on the downstream side, and the gathering part (the downstream side C turbocharger (3B) is connected to the downstream side).

It is driven by the exhaust energy ζ2 from the turbocharger (4 is the exhaust pipe Q) and supercharges the intake air to the engine (ml). Air system C of a): consists of the complex 1) (ba) provided, and is surrounded by the seat rail (4), the seat pillar duplex 6) and the width of the pub at the middle 111t knee of the vehicle body frame. σroni is arranged.

The turbine (b□) has its entrance (8) at the exhaust pipe C.
(9) is the outlet 1G+ of the turbine (bl): the connected master It's a fuller.

On the other hand, the compressor f (be) is a body-side volute pump, which is equipped with a volute chamber (lla) t', and is made up of a two-impeller (the above-mentioned turbine)/(b).
C: is provided coaxially with l) and driven integrally with it.

And the compressuna (b leak) is its inlet (13) c
An air cleaner 0φ is connected, and a discharge port (15) 4 and a discharge tank aO are connected.

The air cleaner (14) is housed in a casing (17) and has an outlet (19).
is directly connected to the intake port (13) of the complex f(ba).

(The sword is the outside air intake of the air cleaner (14), and this outside air intake (e) is installed in the rotation direction ζ of the impeller (12) in the compressor (b,) t; It is being

Specifically, the casing ([11 upper outer periphery C=a duct pipe C2j extending rearward from there by a substantially horizontal direction C2 is connected, and the rear open end of the duct pipe 42'D is an outside air intake port 2).

Therefore, the outside air introduced from the outside air intake port (■) flows through the impeller (12) of the compressor (BS) within the casing (17).
) flows in the same direction as the rotation direction of the element (
18) t-passes smoothly (: introduced into the casing (11) circle of the compressor (ba).

In addition, the air cleaner (in the figure) has two intake ports (13) for the compressuna (b,), and one in the air cleaner (1◇) (to).
4s = facing funnel, this funnel (22)
The outside air that has passed through element 00 is led into the casing (ID) of the compressor (b).

On the other hand, the surge tank (16) is connected to the discharge port aSt of the compressor (bm) via the pipe (23), and serves the function of temporarily storing the intake sound from the compressor (b). ;Each cylinder of engine (a) (&
l) Each C: Each independently provided vaporizer (the wholesaler is connected to it).

Therefore, such an intake device has air 9- + (14)'
i-turbocharger (koji compressor (b)
When outside air is introduced into l), the outside air or fuzzy air is forced from the compressor (ba) to the surge tank (15) &
: From a2, each cylinder (a) of the engine (a) is sent.
1 air is supercharged to X).

The present invention connects the intake air cleaner 't' of the compressor in the turbocharger C as above, and connects the outside air intake of the air cleaner in the rotational direction (two corresponding tangential directions) of the impeller in the compressor. Since the engine's intake system (secondly, the intake line from the air cleaner to the above-mentioned compressor is shortened), the outside air introduced into the air cleaner is rotated in the same direction as the impeller inside the compressor. The flow f'LY is smoothly introduced into the complex.

Therefore, it is possible to reduce the intake resistance from the air cleaner to the compressor and improve the supercharging effect of intake air to the engine, which is the intended purpose! It can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a T side view showing a motorcycle equipped with the device of the present invention;
FIG. 2 is a schematic explanatory diagram of the intake device, and FIG. 3 is an enlarged sectional view of the main parts. In the figure (4)...Vehicle frame (ml...Engine (b)...Turbocharger (b□)...Turbine (b,)...Completuna t2...Impeller 13
-0. Inlet (10・-Air cleaner (E)
・・・Outside air intake

Claims (1)

[Claims] In an engine with a turbocharger, an air cleaner is directly connected to the compressor inlet of the turbocharger, and the outside air intake hole of the air cleaner is connected to the rotary direction of the impeller in the pump receptacle in the corresponding tangential direction. 1; Intake device provided towards.