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:
Jun. 19, 2001
Filed:
Dec. 27, 1999
Ernst Wild, Oberriexingen, DE;
Roland Herynek, Oetisheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An internal combustion engine (,), especially for a motor vehicle is described, which is provided with a regulating valve (,) arranged in an intake pipe (,), through which air is fed to a combustion chamber (,). Furthermore the internal combustion engine (,) is provided with an exhaust gas feedback valve (,), through which exhaust gas is fed to an intake pipe (,). The internal combustion engine has a control unit (,) which determines the mass flow (msdk) through the regulating valve (,) and the mass flow (msagr) through the exhaust gas feedback valve (,). The determined mass flow (msagr) through the exhaust gas feedback valve (,) is divided into an inert gas portion (msagr′) and an air portion (msl) according to the air/fuel ratio (Lambda).