Patent · US Active

Method for operating an internal combustion engine

US10066521B2 · kind B2 · utility

0Cited by

10References

18Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Christian Eberle · Lonsee, DE
Markus Weinig · Winnenden, DE
Claus Naegele · Stuttgart, DE
Mark Reichler · Winnenden, DE

Key dates

Filing date	Jul 21, 2014
Grant date	Sep 4, 2018
Priority date	—
Expiry date	Jan 31, 2035

Classification

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

Abstract

An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f1). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f2, f3, f4) which is coordinated with the first frequency (f1). In a second operating state, the second valve is opened independently of the first frequency (f1).

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