JPS6340535U

JPS6340535U -

Info

Publication number: JPS6340535U
Application number: JP13431686U
Authority: JP
Priority date: 1986-09-03
Filing date: 1986-09-03
Publication date: 1988-03-16

Description

[Brief explanation of the drawing]

第１図は排気ターボチヤージヤの排気タービン
の側面断面図、第２図は第１図の―線に沿つ
てみた断面図である。１…排気タービン、３…タービンホイール、５
…主スクロール室、７…薄肉隔壁、８…副スクロ
ール室、９，１０，１１，１２，１３…連通開孔
、１５，１６，１７，１８，１９…フラツパ、２
２…主開閉弁、２５…副開閉弁。 FIG. 1 is a side sectional view of an exhaust turbine of an exhaust turbocharger, and FIG. 2 is a sectional view taken along the line -- in FIG. 1... Exhaust turbine, 3... Turbine wheel, 5
...Main scroll chamber, 7...Thin wall partition, 8...Sub scroll chamber, 9, 10, 11, 12, 13...Communication opening, 15, 16, 17, 18, 19...Flapper, 2
2...Main on-off valve, 25...Sub-on/off valve.

Claims

[Scope of utility model registration request]

A sub-scroll chamber having a smaller cross-sectional area than the main scroll chamber is formed adjacent to the main scroll chamber that extends along the entire outer circumference of the exhaust turbine, and a plurality of communication openings are formed in a thin partition wall separating the main scroll chamber and the sub-scroll chamber. forming a hole and providing a flapper for opening and closing the communication aperture in each communication aperture, providing a main on-off valve at the exhaust gas inlet of the main scroll chamber, and providing an auxiliary on-off valve at the exhaust gas inlet of the sub-scroll chamber; Exhaust turbocharger scroll that closes the main on-off valve and opens the auxiliary on-off valve and flapper when the engine is running at low speeds, and opens the main on-off valve and closes the auxiliary on-off valve and flapper when the engine is running at high speeds. Room.