Patent · US Expired

Insulation material and method of applying the same to a component in a combustion engine

US4862865A · kind A · utility

8Cited by

6References

7Claims

0Family size

Assignee

AB Volvo · SE

Inventors

Lars Dahlén · Gothenburg, SE
Lars E. Larsson · Köping, SE
Bo L. A. Othzen · Älvängen, SE

Key dates

Filing date	Feb 9, 1988
Grant date	Sep 5, 1989
Priority date	—
Expiry date	Feb 9, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2201/0448
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A thermal insulating material for combustion engine components, which are subjected to combustion gases, e.g. pistons. The insulation consists of a metal layer sintered under low pressure so as to have a porosity of about 25-50% and which is bonded to the engine component by casting of the component onto the porous sintered layer. The exposed or wear-receiving surface of the sintered layer is machined, which not only achieves accurate dimensioning but also closes the pores of the surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.