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:
May. 12, 2015
Filed:
Feb. 14, 2014
Volvo Car Corporation, Gothenburg, SE;
Rob J. Otterspeer, Torslanda, SE;
Ingvar Akesson, Gothenburg, SE;
Volvo Car Corporation, , SE;
Abstract
A method and a device are provided for operating a pre-lubrication system for an internal combustion engine of a hybrid electrical vehicle after vehicle start up, wherein the hybrid electrical vehicle also comprises. The electric engine is turned on at vehicle start up and the internal combustion engine is turned on at vehicle start up or after a period of time after vehicle start up. The pre-lubrication system comprises an engine control function for controlling the internal combustion engine, monitoring the torque requested by a driver and storing information regarding when the driver requests torque equal to or higher than a predetermined torque threshold. The cranking operation of the internal combustion engine, in order to build up oil pressure and fill the oil circuit with oil, is initiated based on the stored information or when the electrical hybrid vehicle reaches a predetermined vehicle speed threshold.