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. 04, 2014
Filed:
Apr. 01, 2011
Ottmar Raeymaeckers, Saltsjö-Boo, SE;
Anders Larsson, Tullinge, SE;
Eva Geijer, Stockholm, SE;
Leif Lundin, Stockholm, SE;
Ottmar Raeymaeckers, Saltsjö-Boo, SE;
Erik Geijer Lundin, Stockholm, SE;
Anders Larsson, Tullinge, SE;
Scania CV AB, , SE;
Abstract
A pump system that includes a pump, an injector and a regulator with a calculation unit. The regulator controls the pump to pump a liquid through a hose to the injector which opens and closes in response to an injector control signal, the time for an opening and closing cycle being called injector cycle and designated T, and the injector's open period being designated γ. The injector has a pressure sensor to measure the pressure of the liquid in the injector and to deliver to the calculation unit a pressure sensor signal representing the pressure amplitude in the injector. The calculation unit calculates the hose's rigidity B as a function of measured pressured amplitudes A in the injector, the injector cycle Tand the injector's open period γ, and the regulator determines the basis of B the control signal to the pump.