JPH0457640U

JPH0457640U -

Info

Publication number: JPH0457640U
Application number: JP9897490U
Authority: JP
Priority date: 1990-09-25
Filing date: 1990-09-25
Publication date: 1992-05-18

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す排気過給機付
エンジンの排気制動装置の概略図、第２図は第１
図中のコントロールユニツトの制御ロジツク図、
第３図は上記制御ロジツクのフローチヤート、第
４図および第５図は従来例を示す排気過給機付エ
ンジンの排気制動装置の概略図である。図中、１は排気系、２はタービン、４は可変ノ
ズル、６はスライド弁、１１はバタフライ弁、１
５はコントロールユニツトである。 Fig. 1 is a schematic diagram of an exhaust braking device for an engine equipped with an exhaust supercharger, showing one embodiment of the present invention, and Fig. 2 is a schematic diagram of an exhaust braking device for an engine with an exhaust supercharger.
The control logic diagram of the control unit in the figure,
FIG. 3 is a flowchart of the above-mentioned control logic, and FIGS. 4 and 5 are schematic diagrams of a conventional exhaust braking system for an engine equipped with an exhaust supercharger. In the figure, 1 is an exhaust system, 2 is a turbine, 4 is a variable nozzle, 6 is a slide valve, 11 is a butterfly valve, 1
5 is a control unit.

Claims

[Scope of utility model registration request]

In an exhaust braking device for an engine equipped with an exhaust supercharger, the exhaust system is provided with a turbine of an exhaust supercharger, and the exhaust inlet of the turbine is provided with a variable nozzle for adjusting the exhaust flow velocity. A control unit is provided with a slide valve for opening and closing the passage, and a butterfly valve for restricting the exhaust pipe on the downstream side of the turbine, and the control unit closes the butterfly valve during warm-up of the engine and closes the slide valve during exhaust braking. An exhaust braking device for an engine equipped with an exhaust supercharger.