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:
Aug. 16, 1988
Filed:
Jun. 19, 1986
Applicant:
Inventor:
Philip C Franklin, Huddersfield, GB;
Assignee:
Holset Engineering Company Limited, Turnbridge, GB;
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
60602 ;
Abstract
A pneumatic control system for the variable area turbine inlet of a turbocharger of an internal combustion engine. The variable turbine inlet is actuated by a pneumatic actuator having a first connection to compressor boost pressure and a second connection to turbine inlet pressure. The actuator increases turbine inlet area in response to an increase in pressure and a one way valve in the compressor boost connection causes the actuator pressure to be the higher of compressor boost or turbine inlet pressure. As a result, turbine pumping losses during high engine rpm low power conditions are minimized.