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:
Nov. 22, 1988
Filed:
Jun. 26, 1987
Heinz Dorsch, Weissach, DE;
Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Stuttgart, DE;
Abstract
An arrangement for controlling the charging pressure of an exhaust gas turbocharger in which the turbine driving the compressor is adapted to be regulated by means of a by-pass valve that is acted upon with control pressure by an electromagnetic timing valve. The timed cycle duration variable by a control apparatus in dependence on the deviation from the desired charging pressure of the internal combustion engine. For reasons of operating safety, two control lines with slightly different pressure levels and each consisting of a control apparatus, of a timing valve and of a control pressure line are connected with a shifting valve, from which a common control pressure line leads to the by-pass valve.