Pre-chamber gas valve

Patent metadata

Field	Value
Publication number	US-2016252005-A1
Application number	US-201615050820-A
Country	US
Kind code	A1
Filing date	Feb 23, 2016
Priority date	Feb 27, 2015
Publication date	Sep 1, 2016
Grant date	—

Abstract

A pre-chamber gas valve including a valve body, at least one valve spring and at least one valve needle, wherein the valve body has a lower space which is acted upon with gas in the operating condition and an upper space in which the valve spring is arranged, wherein the upper space is closed by way of a pressed plug.

First claim

1 . A pre-chamber gas valve including a valve body, at least one valve spring and at least one valve needle, wherein the valve body has a lower space which is acted upon with gas in the operating condition and an upper space in which the valve spring is arranged, wherein the upper space is closed by way of a pressed plug.

2 . A pre-chamber gas valve as set forth in claim 1 , wherein the valve body is configured as one piece from the valve seat in the cylinder head to the end of the valve seat facing away from the pre-chamber gas valve.

3 . A pre-chamber gas valve as set forth in claim 1 , wherein provided for bracing the valve needle with respect to a valve seat is a cap which can be introduced into the valve body of the pre-chamber gas valve and which is connected to the valve needle.

4 . A pre-chamber gas valve as set forth in claim 3 , wherein the cap bears in a condition of abutment against the valve body in the opened condition of the pre-chamber gas valve.

5 . A pre-chamber gas valve as set forth in claim 1 , wherein the valve body is in one piece.

6 . A pre-chamber gas valve as set forth in claim 5 , wherein guidance of the valve needle is effected by the valve body itself, which at the same time also forms the housing of the pre-chamber gas valve.

7 . A pre-chamber gas valve as set forth in claim 1 , wherein provided between the seat of the valve head of the pre-chamber gas valve and the mouth opening of the pre-chamber gas valve into a pre-chamber or between the seat of the valve head of the pre-chamber gas valve and the mouth opening of the pre-chamber gas valve into a passage is a space.

8 . A pre-chamber gas valve as set forth in claim 7 , wherein the space is of a substantially pear-shaped configuration which narrows towards the pre-chamber.

9 . A pre-chamber gas valve as set forth in claim 1 , wherein at its outside contour the pre-chamber gas valve has at least one projection whose flank that is towards an annular passage also delimits the annular passage and against the other flank of which bears a sealant for sealing off the pre-chamber gas valve with respect to a wall of a cavity accommodating the pre-chamber gas valve.

10 . A process for producing a pre-chamber gas valve, preferably a pre-chamber gas valve as set forth in claim 1 , including a valve body, wherein the valve body has a lower space acted upon with gas in the operating condition and an upper space in which a valve spring is arranged, wherein to close the upper space a plug is connected to the valve body by means of a press connection or a screw connection.

11 . A process for producing a pre-chamber gas valve including a valve spring for bracing a valve needle with respect to a valve seat, preferably a pre-chamber gas valve as set forth in claim 1 , wherein a cap bracing the valve spring with respect to the valve seat is connected to the valve needle of the pre-chamber gas valve by way of a beam welding.

Assignees

• Ge Jenbacher Gmbh & Co Og

Inventors

• Jacob Raphael

Classifications

• F16K1/126

  actuated by fluid · CPC title

• F16K15/028

  the valve member consisting only of a predominantly disc-shaped flat element · CPC title

• F02B19/108 Primary

  with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber · CPC title

• Y02T10/30

  Use of alternative fuels, e.g. biofuels · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title