Patent · US Active

Piston of an internal combustion engine

US9670829B2 · kind B2 · utility

4Cited by

34References

20Claims

0Family size

Assignee

Caterpillar Energy Solutions GmbH · DE

Inventors

Robert Böwing · Innsbruck, AT
Enrico Drehobl · Reilingen, DE
Christian Drexel · Lambsheim, DE
Manfred Rapp · Ubstadt-Weiher, DE

Key dates

Filing date	Apr 12, 2013
Grant date	Jun 6, 2017
Priority date	—
Expiry date	Jul 27, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfill the following condition with respect to the wall height H: 0.05 H<=T<=0.5H.

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