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:
Jan. 03, 2012
Filed:
Aug. 25, 2005
Karl-ernst Hummel, Bietigheim-Bissingen, DE;
Ralf Herrmann, Sachsenheim, DE;
Karl-Ernst Hummel, Bietigheim-Bissingen, DE;
Ralf Herrmann, Sachsenheim, DE;
Mann+Hummel GmbH, Ludwigsburg, DE;
Abstract
An internal combustion engine with a system for secondary air charging has a combustion unit, an intake air conduit connected to the combustion unit, and an exhaust gas conduit connected to the combustion unit. A throttle is arranged in the intake air conduit. A turbo-engine is connected to the intake air conduit by a supply conduit upstream of the throttle and by a discharge conduit downstream of the throttle. A compressor is provided wherein the turbo-engine is connected operatively to the compressor and wherein the compressor is connected by a connecting line to the exhaust gas conduit. A valve is arranged in the discharge conduit. A vacuum cell actuates the valve. An electro-pneumatic converter is operatively connected to the vacuum cell. The vacuum cell, when reaching a defined differential pressure, opens the valve suddenly so that a vacuum pulse is generated that acts on the turbo-engine.