The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1988
Filed:
Nov. 01, 1985
Satoshi Suzuki, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An exhaust gas turbine type supercharger in which a casing of a turbine is divided into two chambers along a flow direction of the exhaust gas to form an open scroll and a closed scroll. The open scroll feeds the turbine with the exhaust gas over a full operational range of the engine. The closed scroll is opened to increase a flow rate of the exhaust gas to the turbine when the supercharged pressure is high as in a high load/high speed operation of the engine. A port is formed through a partitioning wall between the open scroll and a downstream exhaust gas passage of the turbine and an opening/closing valve is interposed thereat to thereby bypass the exhaust gas to a downstream portion of the turbine with the port being opened, when the supercharged pressure becomes high.