Patent · US Expired

Cylinder head threaded connection arrangement

US5463991A · kind A · utility

7Cited by

1References

9Claims

0Family size

Assignee

Ing. h.c. F. Porsche Aktiengesellschaft · DE

Inventors

Peter Krotky · Simmozheim, DE
Markus Bauhofer · Rutesheim, DE
Walter Heinzelmann · Odenthal, DE

Key dates

Filing date	Jul 25, 1994
Grant date	Nov 7, 1995
Priority date	—
Expiry date	Jul 25, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2201/021
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An annular gap formed between a shaft of a cylinder head bolt and adjacent components is filled with a wire knit for example to increase the heat transfer. The improved heat transfer reduces the increase in bolt force, especially after a cold start of the internal combustion engine.

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