JPS6375556U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a first embodiment of the present effect, Fig. 2 is a sectional view showing a second embodiment, Fig. 3 is a sectional view showing another embodiment of the outlet pipe, and Fig. 4 is a sectional view showing a second embodiment of the present effect. FIG. 5 is a sectional view taken along line - in FIG. 4, FIG. 6 is a sectional view showing the fourth embodiment, and FIG.
The figure is a sectional view taken along the line - in Fig. 6, Fig. 8 is a side view seen from the direction of the arrow in Fig. 6, Fig. 9 is a schematic diagram showing the position of the fuel injection valve in the surge tank, and Fig. 10 is a schematic diagram showing the position of the fuel injection valve in the surge tank. This figure is a sectional view showing another embodiment of the outlet passage, and FIG. 11 is a sectional view taken along the line - - in FIG. 10. 10... Engine body, 21 _2n , 22 _2n , 23
_2n , 24... Intake port, 30... Intake manifold, 31 _2n , 32 _2n , 33 _2n , 3
4...Branch pipe, 41 _2n , 42 _2n , 43 _2n ,
44...opening, 50...surge tank, 60...
...Exhaust gas recirculation pipe, 61...Outlet pipe, 62...Outlet section.

Claims (1)

[Scope of utility model registration request] An intake manifold having branch pipes connected to intake ports arranged in a row in the engine body, a surge tank communicating with each branch pipe, and an exhaust recirculation pipe connecting the engine exhaust passage and the surge tank. In the intake system for a multi-cylinder internal combustion engine, the openings of the branch pipes to the surge tank are arranged in two or more rows along the arrangement direction of the intake ports, and the tip end of the exhaust recirculation pipe on the surge tank side An intake system for a multi-cylinder internal combustion engine, characterized in that the is located in the center of a surge tank.