Invention Grant
- Patent Title: Fuel-metering arrangement having an electromagnetic fuel valve
-
Application No.: US12591670Application Date: 2009-11-27
-
Publication No.: US10024272B2Publication Date: 2018-07-17
- Inventor: Karsten Schmidt , Andreas Hägele
- Applicant: Karsten Schmidt , Andreas Hägele
- Applicant Address: DE Waiblingen
- Assignee: Andreas Stihl AG & Co. KG
- Current Assignee: Andreas Stihl AG & Co. KG
- Current Assignee Address: DE Waiblingen
- Agency: Walter Ottesen, P.A.
- Priority: DE102008059289 20081127
- Main IPC: F02M7/12
- IPC: F02M7/12 ; F02M1/04 ; F02M17/04

Abstract:
The invention relates to a fuel-metering arrangement for the mixture-forming unit (2) of an internal combustion engine (10) in a portable handheld work apparatus. The mixture-forming unit comprises a fuel store (30), a switchable valve (40) and a fuel channel (20) which opens into an intake region of the engine (10). The valve (40) has an inflow port (41) which is connected to the fuel store (30) and an outflow port (42) which is connected to the fuel channel (20). A fuel column is mechanically moved by the switching of the valve. In order to compensate for this fuel column, the outflow port (42) is connected via a bypass channel (45) to the inflow port (41) and a flow valve (46) is mounted in the bypass channel (45). The flow valve (46) opens in flow direction (49) from the outflow port (42) to the inflow port (41) and blocks in the direction opposite thereto.
Public/Granted literature
- US20100126467A1 Fuel-metering arrangement having an electromagnetic fuel valve Public/Granted day:2010-05-27
Information query