Abstract: A method is provided for operating a hybrid vehicle after a stationary state of the hybrid vehicle having an electric machine and an internal combustion engine with a circulating oil lubrication system. The electric machine and the internal combustion engine can be operated independently of one another and their output shafts can be operatively connected to one another via a clutch and/or a transmission for a separate or common drive. The method includes: starting the electric machine and starting the hybrid vehicle with pure electric drive; connecting the drive shafts during the electric drive and cranking the internal combustion engine without inputting fuel until a defined oil pressure is built up in the circulating oil lubrication system; uncoupling the output shafts; continuing to operate the hybrid vehicle with pure electric drive until the internal combustion engine is started.

Abstract: For a process for fracture separating the bearing cover of a multi-part bearing arrangement, particularly in crankcases of internal-combustion engines, by means of a half-mandrel in a bearing bore partially bounded by the bearing cover, for separating integrally constructed fastening flanges of the bearing cover from the remaining part of the bearing arrangement, it is suggested for producing fracture separating surfaces in planes sloping with respect to one another that the pairs of corresponding fracture separating surfaces of the bearing cover and the remaining part of the bearing arrangement are produced in separating areas which together enclose an obtuse angle (.alpha.) having a case-side vertex by at least one half-mandrel whose curvature radius, as a function of the respective obtuse angle (.alpha.), is selected to be by 0.5% to 5% smaller than the constant radius of the bore receiving the half-mandrel.