Fuel intake system for multi-cylinder internal combustion engine

Gas and liquid contact apparatus – Fluid distribution – Systems

Patent

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Details

261 41D, 261121A, 123 52M, F02M 308

Patent

active

042645352

ABSTRACT:
For a multi-cylinder internal combustion engine having at least two sets of engine cylinders, a fuel intake system comprises at least first and second intake passages communicated to the engine cylinders of the respective sets and through which respective primary combustible mixtures are supplied into the engine cylinders of the sets. First and second connecting passages are provided for communication between the first and second intake passage at respective positions downstream of throttle valves in the intake passages. The first connecting passage has an intermediate portion communicated to an idle and low-speed fuel circuit for distributing uniformly an idling mixture into the first and second intake passages and has an effective cross sectional surface area smaller than that of the second connecting passage.

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