Intake system for multi-cylinder engine

Details Intake system for multi-cylinder engine Intake system for multi-cylinder engine

1990-02-28

1991-05-07

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

123 52MC, F02M 3510

Patent

active

050127713

ABSTRACT:
An intake system is incorporated in a multi-cylinder internal combustion engine having a plurality of cylinders. The intake system includes an intake manifold having a plurality of discrete intake passages connected to the plurality of cylinders, respectively, and two intake pipes, each intake pipe being arranged in such a way as to descend substantially vertically downwardly from a communicating portion where the intake pipe communicates with each of two groups of the intake passages, turns to extend horizontally in one longitudinal direction of the engine body and then turns back to extend in the opposite longitudinal direction of the engine body surrounding the discrete intake passages. The two groups of the discrete intake passages are connected to two groups of the cylinders which in each and the same group are not intended to be fired one after another.

REFERENCES:
patent: 4643138 (1987-02-01), Ruf et al.
patent: 4932368 (1990-06-01), Abe et al.

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