JPS6340528U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of a V-type engine showing an embodiment of the present invention. FIG. 2 is an enlarged side view of the intake manifold portion shown in FIG. 1. Figure 3 is a view of the intake manifold after assembly, viewed from the cooling water pipe side. Figure 4 is a vertical sectional view of Figure 2. FIG. 5 is a perspective view showing the state of the intake manifold shown in FIG. 2 before being joined. FIG. 6 is a plan cross-sectional view showing the connection portion between the cooling water pipe, the collecting member, and the common pipe. FIG. 7 is a view of the upstream joint seat seen from the side of the branch pipe. 8th
The figure is a sectional view taken along the line in Figure 7. FIG. 9 is a simplified plan view showing the mating surfaces of the upper joint seats of the assembled intake manifold. FIG. 10 is a simplified bottom view showing the mating surfaces of the lower joint seats of the assembled intake manifold. Z: Engine, 1: Cylinder block, 2A,
2B: Bank, 3A, 3B: Cylinder head, 4
A, 4B: Intake port, 6: Surge tank, 7,
8: Intake pipe, 9: Manifold assembly, 2
0: First intake manifold, 21A to 21C: Branch pipe, 25A to 25C: Upper joint seat, 26A to 26
C: Lower joint seat, 40: Second intake manifold, 4
1A to 41C: branch pipe, 45A to 45C: upper junction, 46A to 46C: lower junction.

Claims (1)

[Claims for Utility Model Registration] In a V-type engine in which left and right banks are arranged in a V-shape, a first intake manifold connected to the left bank and a second intake manifold connected to the right bank are provided. intake manifolds are formed separately and independently from each other, and are arranged in a central space of the V bank formed between the two banks with their branch pipes intersecting each other, and both the first and second intake manifolds A plurality of lower joint seats and upper joint seats are formed at intervals in the cylinder arrangement direction at each downstream end of the manifold and at the upstream end where the branch pipes intersect with each other. and the upper joint seats are joined to each other, the mating surfaces of the lower joint seats are formed so as to abut each other from the left and right directions, and the mating surfaces of the upper joint seats are connected to both the first and second intake manifolds. An intake manifold structure for a V-type engine, characterized in that the intake manifold structure is formed to be inclined with respect to the cylinder arrangement direction so as not to interfere with the branch pipes when the branch pipes cross each other from left and right.