Ignition plug with pre-chamber and device for flushing pre-chamber

Abstract

Described is an ignition plug (1) comprising an outer wall (3) comprising a combustion chamber-side region (7) configured to be arranged in a combustion chamber (15), a longitudinal axis (2), a combustion chamber-side end (5) in the longitudinal direction and a combustion chamber counter-end (6), at least one pre-combustion chamber (8) being arranged at the combustion chamber-side end (5), and thepre-combustion chamber (8) has at least one combustion chamber-side opening (4) for conducting the mixture that has been ignited in the pre-combustion chamber into the combustion chamber (15). The outer wall (3) is at least partially surrounded in the circumferential direction by a support (12), at least one flow channel (20, 25) for flushing the pre-chamber extends through the support (12) and the outer wall (8) in the region of the pre-chamber (8), the at least one flow channel fluidically connecting the pre-chamber (8) to the combustion chamber-side region (7), wherein the flow channel (20, 25) for flushing the pre-chamber is configured to be opened and closed by means of a displacement of the bracket (12) relative to the cylinder head (11) in an installed state within the cylinder head (11).

Description

technical field [0001] The invention relates to a glow plug with a prechamber, a method for operating a glow plug with a prechamber, an internal combustion engine and a vehicle, such as a motor vehicle. Background technique [0002] Glow plugs with pre-chambers improve combustion under certain conditions, but there are certain risks. A challenge here is to thoroughly flush out the hot combustion gases in the pre-chamber, especially in the area between the separator and the casing in the upper area of ​​the pre-chamber. Without adequate flushing, premature ignition can occur in these areas. Furthermore, the ignition electrodes arranged in the pre-chamber are difficult to cool, in particular because they are surrounded by hot combustion gases most of the time. [0003] Document DE 10 2005 017 186 A1 describes a method for flushing the pre-chamber of a glow plug, as far as possible and including flushing into the region of the ignition electrode. In this case, the residual g...

AI Technical Summary

Problems solved by technology

[0002] Glow plugs with pre-chambers improve combustion under certain conditions, but there are certain risks

Here, a challenge is to thoroughly flush the hot combustion gases in the pre-chamber, especially in the area between the separator and the casing in the upper area of ​​the pre-chamber

Images