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. 18, 2003
Filed:
Jul. 12, 2002
Burkhard Hiller, Oberriexingen, DE;
Andreas Glenz, Kernen I.R., DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method and an apparatus for posttreatment of exhaust gases of internal combustion engines after an engine operation includes an intake system and an exhaust gas treatment system with an exhaust gas catalytic converter. Secondary air that originates in an air source can be delivered to the exhaust gas treatment system at a first secondary air inlet. After an engine operation, with the exhaust gas catalytic converter at operating temperature, the throttle device in the intake system is closed. After the engine operation, the engine is shut off in a phase relationship in which inlet/outlet valves of at least one combustion chamber of the engine are open. By means of the air source, an air flow is generated, which discharges at a further inlet point in the intake system of the engine and flows through or bathes the components in the direction of the exhaust gas catalytic converter at operating temperature in the exhaust gas treatment system.