Patent · US Active

Method for operating a spark ignition engine

US8100115B2 · kind B2 · utility

1Cited by

5References

12Claims

0Family size

Assignee

Daimler AG · DE

Inventor

Thomas Koch · Remchingen, DE

Key dates

Filing date	Jan 12, 2009
Grant date	Jan 24, 2012
Priority date	—
Expiry date	May 6, 2030

Classification

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

Abstract

In a method for operating a spark ignition engine, wherein the inlet valves of the spark ignition engine are closed very early or very late, and a combustion air flow which is supplied to the spark ignition engine is compressed by means of a charger, and, under full load operation, the inlet valves are closed either early or late to avoid knocking of the engine, a partial flow of re-circulated exhaust gas is supplied to the combustion air flow supplied to the engine also during full load engine operation.

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