Segmented piston for internal combustion engine
AssigneeHirschvogel Umformtechnik GmbH
InventorsArmin Ihle, Thomas Brücher
Life of this patent
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Abstract
The present invention relates to a multi-piece, in particular at least two-piece, piston (1) for an internal combustion engine having a longitudinal axis (L), comprising a piston outer part (10) having a closed piston head (11), which in the fitted state defines a combustion chamber, and a piston body (13) extending axially away from the piston head (11), and a piston inner part (20), which in the fitted state is connected to a connecting rod. An outer surface (2) radially defining the piston (1) is formed exclusively by at least one portion of the piston body (13) of the piston outer part (10). The piston inner part (20), viewed in an axial direction, is arranged radially entirely inside the piston body (13) or its circumferential surface.
Claims17
Multi-piece piston (1) for an internal combustion engine having a longitudinal axis (L), comprising:
- a piston outer part (10) having a closed piston head (11), which in the fitted state defines a combustion chamber, and a piston body (13) extending axially away from the piston head (11);
- and
- a piston inner part (20), which in the fitted state is connected to a connecting rod;
- wherein an outer surface (2) radially defining the piston (1) is formed exclusively by at least one portion of the piston body (13) of the piston outer part (10), wherein the piston inner part (20), viewed in an axial direction, is arranged radially entirely inside the piston body (13),
- wherein an end of the piston body (13) axially remote from the piston head (11), comprises multiple piston skirt areas (150, 151) distributed over the circumference,
- wherein the piston skirt areas (150, 151), at their opposite ends (150a, 150b, 151a, 151b), viewed in a circumferential direction, comprise reinforcing lands (152, 153) projecting radially towards the longitudinal axis (L), and
- wherein the piston inner part (20) comprises a radially outward facing support face (240, 250), which is, at least in part, in flat contact with a radially inward facing support face (154, 155) of reinforcing lands (152, 153).
Dependencies are inferred from the claim text.