Other

Hirschvogel Umformtechnik Gmbh

Mahle Gmbh

Volvo Powertrain Corporation

Armin Ihle

Gerhard Berr

Lars Olof Lundin

Magnus Horn

Henk Ravenshorst

Thomas Brücher

Lars Lundin

Henk Ranvenshorst

The present invention relates to a multi-piece, in particular at least two-piece, piston () for an internal combustion engine having a longitudinal axis (L), comprising a piston outer part () having a closed piston head (), which in the fitted state defines a combustion chamber, and a piston body () extending axially away from the piston head (), and a piston inner part (), which in the fitted state is connected to a connecting rod. An outer surface () radially defining the piston () is formed exclusively by at least one portion of the piston body () of the piston outer part (). The piston inner part (), viewed in an axial direction, is arranged radially entirely inside the piston body () or its circumferential surface.

Segmented piston for internal combustion engine

In a multipart cooled piston ( ) for a combustion engine with a piston upper part ( ) of steel comprising a combustion bowl ( ) and a ring wall ( ) with ring belt ( ), and with a piston lower part ( ) comprising a piston skirt ( ), pin bosses ( ) for receiving the piston pin connecting the piston ( ) to the connecting rod, and pin boss supports ( ) connected to the piston skirt ( ), and in a method for manufacture of such a piston ( ), inexpensive manufacture and good form stability are to be achieved in that a cooling channel ( ) formed inside the piston upper part ( ) has forged supporting ribs ( ) in its area extending to the combustion bowl ( ), which each form sections of an all-round ring rib ( ) with a connection surface radially to the longitudinal piston axis (K), in that the piston lower part ( ) has an annular and all-round carrier rib ( ) with a connection surface connected to the pin boss supports ( ), and in that the piston upper part ( ) and the piston lower part ( ) are non-detachably connected by means of the connection surfaces of the ring rib ( ) and the carrier rib ( ).

Multipart cooled piston for a combustion engine and method for manufacture thereof

Growing community of inventors

Munich, Georgia

Armin Ihle