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:
Dec. 21, 1993
Filed:
Mar. 25, 1992
Toshiro Kawakami, Obu, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, KR;
Abstract
A turbocharged engine includes intake passage and an exhaust passage connected with the engine, a compressor rotor of a turbocharger inserted in the intake passage, a turbine rotor of the turbocharger inserted in the exhaust passage and connected with the compressor rotor, a bypass passage connecting an upstream side of the turbine rotor and a downstream side thereof in parallel with the exhaust passage, an opening formed between the exhaust passage and the bypass passage, a first port formed at a downstream side of the compressor rotor in the intake passage and supplying a first signal pressure, a second port formed at a scroll portion of the turbocharger in the compressor rotor side and supplying a second signal pressure, a waste gate valve opening or closing the opening according to the first or second signal pressure, and a 3-way valve connecting the signal pressure chamber to the first port or second port selectively. When a revolution number of the engine is low, the 3-way valve connects the signal pressure chamber the second port and when a revolution number of the engine is high, the 3-way valve connects the signal pressure chamber to the first port.