Back to results
US 5,671,710 AGranted
Pistons for internal combustion engines and method of manufacturing same
AssigneeUnisia Jecs Corporation
InventorMasato Sasaki
Life of this patent
Estimating the term…
Abstract
A piston for an internal combustion engine comprises a wear resisting annulus disposed on a top ring groove and made of aluminum alloy containing SiC particulates and an interface between the wear resisting annulus and the top ring groove, the interface being remelted and solidified.
Claims19
A piston for an internal combustion engine, comprising:
- a main body made of aluminum alloy;
- groove means for defining a plurality of piston ring grooves on an outer periphery of said main body;
- wear resisting means for resisting wear of said groove means, said wear resisting means being made of aluminum alloy containing predetermined particulates;
- and
- interface means for interconnecting said groove means and said wear resisting means, said interface means including surfaces of said groove means and said wear resisting means, said surfaces being remelted by a heat source and solidified.
2 more elements
A piston for an internal combustion engine comprising:
- a main body made of aluminum alloy;
- groove means for defining a plurality of piston ring grooves on an outer periphery of said main body;
- an annulus disposed on said groove means for resisting wear of said groove means, said annulus being made of aluminum alloy containing predetermined particulates;
- and
- interface means for interconnecting said groove means and said annulus, said interface means including surfaces of said groove means and said annulus, said surfaces being remelted by a heat source and solidified.
2 more elements
A method of manufacturing a piston for an internal combustion engine having a main body and at least one ring groove, the method comprising the steps of:
- forming a wear resisting annulus out of aluminum alloy containing predetermined particulates;
- casting molten aluminum alloy for the main body of the piston around said wear resisting annulus, said wear resisting annulus being positioned to correspond to the ring groove of the piston;
- and
- remelting and solidifying an interface between said wear resisting annulus and the main body of the piston.
1 more element
Dependencies are inferred from the claim text.