| 摘要 |
The invention relates to a valve which is intended for internal combustion engines and which comprises a valve-head (2) which has formed thereon a circular abutment surface for sealing coaction with a valve seat (9). The valve-head (2) has connected therewith a valve-stem (3) by means of which the valve is moveably journalled in a valve-guide (10). According to the invention, the valve-head (2) has a relatively small wall-thickness, and the valve-stem (3) has provided thereon a collar (16) which on the side thereof distal from the valve-plate (2) has an abutment surface (17) for abutment with a fixed abutment surface. |
