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:
Jul. 12, 2005
Filed:
Mar. 05, 2002
Eberhard Schoeffel, Bamberg, DE;
Hans Braun, Stuttgart, DE;
Josef Seidel, Breitenguessbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
For measuring the injection quantity (Vm) of injection systems (), in particular in internal combustion engines, test fluid () is injected by the injection system () into a measurement chamber (). To increase the precision and stability of the measurement, the volume of the measurement chamber () is kept constant during the injection. Moreover, a gas volume (Vg) is present in the measurement chamber (). The injected volume (Vm) of test fluid () is ascertained from the pressure change (dP) in the measurement chamber () that occurs upon an injection of test fluid (). The ascertainment of the injected volume (Vm) is done by means of the state equation for ideal gases.