The invention relates to a thermally and/or mechanically stressed component wall (5) of a fluid-conducting and/or gas-conducting component, in particular a cylinder head (1) of an internal combustion engine, with at least one area at risk of cracking due t...

A sealing structure which is able to reduce an inserting load, while enhancing a sealing performance is provided. The sealing structure is characterized in that an annular groove (211) has a step on its groove bottom, and is provided with a primary annular...

A cylinder head (1) includes a water jacket (4) formed around an ignition plug mounting hole (5). Upper surfaces (12 to 14) of portions of the water jacket (4) between intake ports (7) and the ignition plug mounting hole (5) and between exhaust ports (8) a...

The first aspect of the present invention is a cylinder head containing a water jacket in which a passage for EGR gas is disposed, and the EGR gas passage has a hollow pipe that is disposed in the hollow pipe and through which the EGR gas passes and an end...

In an engine 70 including an EGR apparatus 91 which refluxes a portion of exhaust gas from an exhaust manifold 71 to an intake manifold 73 as EGR gas, it is an object of the present invention of the application to improve assembling operability of a differ...

An engine includes a head cover covering an upper part of a cylinder head to accommodate a valve gear mechanism and an injector. The head cover is separatable into a lower cover body and an upper cover body detachable from and attachable to the lower cover...

The cylinder head (1) has several screw pipes for the fastening of the cylinder head to the cylinder casing, and several outer walls which define the cylinder head. The screw pipes (3) and the outer walls (2) are enclosed by a frame structure (4) which is ...

The cylinder head (1) for an internal combustion engine with several combustion chambers (4) has between two adjacent combustion chambers in the region of greatest proximity a space for a relief groove (8). The relief groove has a length at right angles to...