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. 12, 2001
Filed:
Mar. 10, 2000
Werner Aschner, Ulm, DE;
Ralf Binz, Sindelfingen, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A method and apparatus regulates the pressure in the intake duct of an internal combustion engine. The internal combustion engine has a control unit, in which a desired pressure value is determined. The current pressure in the intake duct is adjusted to the desired value by a valve device, and the valve device is acted upon by an actuating signal from the control unit. In order to build up the pressure in the intake duct with a suitable dynamic response for each load state, particularly when using a number of valve devices, the actuating signal is used as a control signal, as a function of a relative desired pressure valve, from a control characteristic map stored in the control unit. A controller signal produced in a controller is superimposed on the control signal if required.