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. 20, 2021
Filed:
Mar. 16, 2018
Volvo Truck Corporation, Gothenburg, SE;
David Carlson, Mölndal, SE;
Staffan Lundgren, Hindås, SE;
VOLVO TRUCK CORPORATION, Göteborg, SE;
Abstract
The invention relates to a method () for estimating a cylinder pressure (CP) in an internal combustion engine arrangement (), the method comprising the steps of: initiating () an opening of a valve by an actuator during an expansion stroke; monitoring () the valve to determine a point in time (Tp) when the valve opens; determining () a differential pressure (DP) between the combustion cylinder and a position in a fluid medium exhaust passage () downstream said valve at the point in time (Tp); receiving () data being indicative of a pressure (EP) in the fluid medium passage at the point in time (Tp); and determining () the cylinder pressure (CP) at the point in time (Tp) based on the determined differential pressure (DP) and the data indicative of the pressure in said fluid medium passage.