JPH0124331Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for fixing the vicinity of the outlet side of an exhaust manifold connected to a cylinder head of an internal combustion engine.

Conventionally, in this type of fixing mechanism, a boss 3 is installed near the outlet side of an exhaust manifold 2 connected to a cylinder head 1 of an internal combustion engine, as shown in FIG.
A boss 5 is also provided on the cylinder block 4 side, and the boss 3 and the boss 5 are connected through a bracket 6 to be fixed. However, in the conventional fixing mechanism described above, when the outlet side of the exhaust manifold 2 needs to be moved from a predetermined position toward the front of the internal combustion engine due to layout reasons, the boss 5 on the cylinder block 4 side is moved inside the exhaust manifold 2. In such a case, it becomes impossible to connect the boss 5 and the boss 4 on the exhaust manifold 2 side with the bracket 6.

The purpose of this invention is to solve the above-mentioned conventional problems and to make the fixed position near the outlet side of the exhaust manifold variable in the longitudinal direction. The main feature is that the water suction pipe is fixed to the cylinder block so as to be slidable in the axial direction of the water suction pipe.

The present invention will be described with reference to an embodiment shown in FIG. 2 and below. A boss 3 is provided near the outlet side of an exhaust manifold 2 connected to a cylinder head 1. On the other hand, the cylinder block 4 has a bracket 7,
A water suction pipe 9 is attached and fixed via 8. The brackets 7 and 8 surround the outer periphery of the water suction pipe 9 and are attached to the bolt 1.
7, 18 to boss 1 of cylinder block 4.
It is fixed at 2,13. Exhaust manifold 2
A bracket 10 is placed between the boss 3 and the water suction pipe 9 to fix the vicinity of the outlet side. The bracket 10 is fixed to the boss 3 by bolts 16, and is fitted around the outer periphery of the water suction pipe 9 with bolts 14 and nuts 15.
It is fixed by tightening the water suction pipe 9.

In the above configuration, when the internal combustion engine is operating, vibrations are transmitted from the cylinder block 4 to the exhaust manifold 2 via the cylinder head 1, and the vibrations are not maximized near the outlet 11 of the exhaust manifold 2. By extending the bracket 10 between the boss 3 and the water suction pipe 9, the vicinity of the outlet 11 of the exhaust manifold 2 is fixed to the water suction pipe 9, and furthermore, the water suction pipe 9 is fixed to the water suction pipe 9. Since the exhaust manifold 2 is fixed to the bosses 12 and 13 of the cylinder block 4 via the fixing mechanisms 7 and 8, vibrations of the exhaust manifold 2 are suppressed and reduced by such a fixing mechanism. The position of the bracket 10 relative to the axial direction of the water suction pipe 9 can be adjusted by loosening the bolt 14 and nut 15 so that the bracket 10 can be slid in the axial direction. Therefore, the fixed position of the exhaust manifold 2 can be adjusted in the longitudinal direction. Further, the bracket 10 can be rotated around the water suction pipe 9 when the bolt 14 and nut 15 are loosened, and the fixing position of the exhaust manifold 2 can also be adjusted in the vertical direction within that range. Therefore, even if the outlet side of the exhaust manifold 2 moves in the front-rear direction, it can be fixed easily and without difficulty, and positional and shape errors between the exhaust manifold 2 and the internal combustion engine can be easily absorbed to reduce mounting stress. It can be reduced.

As described above, the present invention allows the vicinity of the outlet side of the exhaust manifold connected to the cylinder head of an internal combustion engine to slide in the axial direction of the water suction pipe that is attached and fixed to the cylinder block. Therefore, even if the outlet side of the exhaust manifold moves in the longitudinal direction, the outlet side can be easily fixed by sliding and adjusting the fixing position, and the connection between the exhaust manifold and the internal combustion engine can be easily fixed. Positional and geometrical errors can also be easily accommodated by sliding the fixed position as described above, and thus the fixed exhaust manifold suppresses and reduces vibrations during operation of the internal combustion engine.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional example, Fig. 2 and the following show an embodiment of the present invention; Fig. 2 is a side view;
FIG. 3 is a sectional view taken along line AA in FIG. 2. In the figure, 1... cylinder head, 2... exhaust manifold, 3... boss, 4... cylinder block, 9... water suction pipe, 10...
...Bracket.

Claims (1)

[Scope of utility model registration request] The exhaust manifold connected to the cylinder head of the internal combustion engine is fixed near the outlet side to the water suction pipe attached and fixed to the cylinder block so as to be slidable in the axial direction of the water suction pipe. Exhaust manifold fixing mechanism.