Patent · US Active

Internal combustion engine air spring system arrangement

US8375903B2 · kind B2 · utility

1Cited by

8References

25Claims

0Family size

Assignee

BRP-POWERTRAIN GMBH & CO KG · AT

Inventors

Michael Dopona · Bad Hall, AT
Johann Neuboeck · Wels, AT
Christian Berger · Schwanenstadt, AT
Roland Ennsmann · Fallsbach, AT
Stefan Leiber · Wels, AT
Gerd Ohrnberger · Rutzenmoos, AT
Rene Vormuendl · Bad Hall, AT

Key dates

Filing date	Jan 20, 2010
Grant date	Feb 19, 2013
Priority date	—
Expiry date	Jan 7, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2800/01
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine has at least one intake valve and at least one exhaust valve. A first spring biases the at least one intake valve to a closed position. A second spring biases the at least one exhaust valve to a closed position. At least one of the first and second springs is an air spring. An air compressor is disposed inside the cylinder head and fluidly communicates with the air spring to supply air to the air spring. The air compressor being disposed between a crankshaft and a cylinder head cover in a direction parallel to a cylinder axis is also disclosed.

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