Intake pipe of internal combustion engine

Details Intake pipe of internal combustion engine Intake pipe of internal combustion engine

2011-03-22

2011-03-22

Kamen, Noah (Department: 3741)

Internal-combustion engines

Intake manifold

C123S184310

Reexamination Certificate

active

07909010

ABSTRACT:
An intake pipe of an internal combustion engine includes a main flow passage allowing air introduced into the engine to flow therethrough, an upper branch flow passage branching off from the main flow passage and communicating with #2 cylinder, #4 cylinder, and #6 cylinder, a lower branch flow passage branching off from the main flow passage and communicating with #1 cylinder, #3 cylinder, and #5 cylinder, and a partition wall allowing the upper branch flow passage and the lower branch flow passage to be apart. The partition wall has an end portion that faces the main flow passage. The end portion is formed of a spherical surface. With such a configuration, the intake pipe of the internal combustion engine, which intake pipe provides sufficient improvement in intake efficiency, is provided.

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