2results about How to "Increase surface pressure" patented technology

The present invention relates to a fuel valve assembly for controlling the injection of fuel into a combustion chamber of a two-stroke internal combustion engine, comprising a first valve part and a second valve part, where one of said valve parts comprises a portion at least partly surrounding a portion of the other valve part, wherein the one of said valve parts comprising a portion at least partly surrounding a portion of the other valve part has an outer face, the fuel valve assembly further comprising a hole extending from a first imaginary point of the outer face towards a second imaginary point of the outer face, intersecting the first valve part and the second valve part, and a fixation part arranged in the hole, engaging the first valve part and the second valve part and connecting the first valve part and the second valve part. The invention also relates to an internal combustion engine comprising a fuel valve assembly.

This utility model discloses an engine and its cylinder head gasket. The cylinder head gasket of this utility model includes a cylinder head gasket body, and a groove is provided on the upper surface of the cylinder head gasket body. Sealing parts are provided on both the inner and outer sides of the groove, respectively defined as an inner sealing part and an outer sealing part. The groove on the upper surface of the cylinder head gasket body reduces the area of ​​the upper surface, increases the surface pressure of the sealing surfaces of the inner and outer sealing parts, and reduces cylinder head gasket deformation caused by heat conduction. The cylinder head gasket of this utility model has good sealing performance and can effectively improve the sealing performance of the high-temperature and high-pressure combustion chamber of medium and large engines, ensuring the normal operation of the engine.