Patent · US Active

Internal combustion engine

US8235013B2 · kind B2 · utility

1Cited by

11References

15Claims

0Family size

Assignee

Dr. Ing. h.c. F. Porsche AG · DE

Inventors

Leo Spiegel · Sharon, US
Van-Khanh Tran · Rutesheim, DE
Hartmut Voss · Schriesheim, DE
Dietmar Schwarzenthal · Ditzingen, DE

Key dates

Filing date	Feb 18, 2010
Grant date	Aug 7, 2012
Priority date	—
Expiry date	Oct 31, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine with a plurality of cylinders, which are each assigned an inlet valve, an outlet valve and a combustion space, with an inlet camshaft connected to a camshaft adjuster, with an outlet camshaft connected to a camshaft adjuster, with a switchable inlet-valve drive which has a plurality of inlet cams for actuating the respective inlet valve, with a switchable outlet-valve drive which has a plurality of outlet cams for actuating the respective outlet valve, and with an exhaust-gas system. The internal combustion engine is operated with compression ignition or with spark ignition as a function of the operating point. For this purpose, for the compression ignition, a specific residual exhaust-gas quantity is set in the combustion space. Furthermore, the internal combustion engine is operated as a function of the operating point by means of an outlet cam.

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