JPS6317833U

JPS6317833U -

Info

Publication number: JPS6317833U
Application number: JP10992986U
Authority: JP
Priority date: 1986-07-16
Filing date: 1986-07-16
Publication date: 1988-02-05

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係るエンジンの排気
装置の要部縦断面図、第２図は第１図の―要
部横断面図、第３図は第１図の―矢視図、第
４図は第１図の―要部縦断面図、第５図は第
４図に示したバイパスポートの変形例を示す縦断
面図、第６図は従来のエンジンの排気装置の要部
縦断面図、第７図は第６図の―矢視図である
。１……エンジン本体、２……排気マニホールド
、３……排気ターボ過給機、４……タービン、５
……ブロア、６……タービンブレード、８……排
気導入部、１１，１２……排気通路、２０……ウ
エストゲート弁、２５……アクチユエータ、３１
，３２……ウエストゲート、３３……バイパスポ
ート。 1 is a vertical cross-sectional view of a main part of an engine exhaust system according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of FIG. 1, and FIG. 3 is a view taken along the arrow in FIG. Fig. 4 is a vertical sectional view of the main part of Fig. 1, Fig. 5 is a longitudinal sectional view showing a modification of the bypass port shown in Fig. 4, and Fig. 6 is a longitudinal sectional view of the main part of a conventional engine exhaust system. The top view, FIG. 7, is a view taken along the - arrow in FIG. 1...Engine body, 2...Exhaust manifold, 3...Exhaust turbo supercharger, 4...Turbine, 5
... Blower, 6 ... Turbine blade, 8 ... Exhaust introduction section, 11, 12 ... Exhaust passage, 20 ... Waste gate valve, 25 ... Actuator, 31
, 32...Westgate, 33...Bypassport.

Claims

[Scope of utility model registration request]

The turbine of an exhaust turbo supercharger having a turbine and a blower is connected to the exhaust outlet end of an exhaust manifold attached to the engine body, and a plurality of exhaust passages are connected from the exhaust manifold to the turbine blades of the turbine. The exhaust system for an engine is divided into a plurality of exhaust passages, and a wastegate is formed in each of the plurality of exhaust passages, and each of the wastegates is opened and closed by a common wastegate valve, wherein the wastegate valve The valve shaft is attached to a valve shaft arranged in a direction along the passage direction, and the valve shaft is further connected via a lever mechanism to an actuator arranged in a direction substantially perpendicular to the direction of the exhaust passage, and the actuator moves the valve shaft. The wastegate valve is configured to open and close the plurality of wastegates by rotating the wastegate valve, and the diameter of each of the plurality of wastegates is set to be inversely proportional to the distance from the valve shaft. An engine exhaust system characterized by: