JPS6436626U

JPS6436626U -

Info

Publication number: JPS6436626U
Application number: JP13258687U
Authority: JP
Priority date: 1987-08-31
Filing date: 1987-08-31
Publication date: 1989-03-06

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す排気ブレーキ
の消音用吸気路開閉弁と兼用にされる機械式過給
機の切換弁の、排気ブレーキ及び機械式過給機非
作動時の概略構成図、第２図は同上弁の、排気ブ
レーキ作動時の概略構成図、第３図は同上弁の、
機械式過給機作動時の概略構成図、第４図は排ガ
ス式過給機と機械式過給機とを備えた過給エンジ
ンの概略構成図である。１…排ガス式過給機、１ａ…コンプレツサー、
１ｂ…タービン、２…エンジン、４…切換弁、６
…機械式過給機、３０…吸気路、５０…排気ブレ
ーキの消音用吸気路開閉弁と兼用の機械式過給機
の切換弁。 FIG. 1 shows a schematic configuration of a mechanical supercharger switching valve that also serves as an exhaust brake noise-muffling intake passage opening/closing valve when the exhaust brake and mechanical supercharger are not operating, showing an embodiment of the present invention. Figure 2 is a schematic configuration diagram of the same valve when the exhaust brake is activated, and Figure 3 is a schematic diagram of the same valve when the exhaust brake is activated.
Schematic configuration diagram when mechanical supercharger is in operation. FIG. 4 is a schematic configuration diagram of a supercharged engine equipped with an exhaust gas type supercharger and a mechanical supercharger. 1...Exhaust gas type supercharger, 1a...Compressor,
1b...Turbine, 2...Engine, 4...Switching valve, 6
... Mechanical supercharger, 30... Intake path, 50... Mechanical supercharger switching valve that also serves as an intake path opening/closing valve for muffling the exhaust brake.

Claims

[Scope of utility model registration request]

An exhaust gas supercharger that blows engine exhaust gas onto a turbine and rotates the turbine, thereby rotating a compressor coaxially with the turbine and sending boost pressure to the engine; A mechanical supercharger that further pressurizes the air pressurized by the charger based on the operating state of the engine, and a mechanical supercharger that further pressurizes the air pressurized by the exhaust gas supercharger, and A supercharged engine having a switching valve that opens and closes the intake passage of the engine so as to send the air to either side.
The switching valve is provided in the exhaust passage of the engine, and an exhaust passage opening/closing valve is provided in the exhaust passage of the engine to block the exhaust brake, and the exhaust brake is provided in the intake passage of the exhaust brake and operates in conjunction with the exhaust passage opening/closing valve. When the exhaust brake is activated, the switching valve is slightly opened, and when the mechanical supercharger is activated,
A switching valve for a mechanical supercharger, characterized in that the switching valve is fully closed, and is fully opened when the exhaust brake is not operating and the mechanical supercharger is not operating.