Air and fuel supply control systems for internal combustion engi

Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine

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Details

60601, F02B 3712

Patent

active

050902032

ABSTRACT:
An air and fuel supply control system for an internal combustion engine comprises a plurality of superchargers including a turbosupercharger, an intake air cutoff valve operative selectively to be open and closed respectively for opening and closing one of separated intake passages in which a compressor of the turbosupercharger is disposed, a cutoff valve controller operative to control the intake air cutoff valve to be closed so that the turbosupercharger is restrained from supercharging the engine when intake air mass flow fed to the engine is to be relatively small and to control the intake air cutoff valve to be open so that the turbosupercharger works for supercharging the engine when the intake air mass flow fed to the engine is to be relatively large, and air flow sensor for detecting intake air mass flow passing through an intake passage from which the separated intake passages are branched, a fuel supply controller operative to control quantity of fuel supplied to the engine in accordance with a detection output obtained from the air flow sensor, and a fuel supply revising device operative to revise the quantity of fuel supplied to the engine when the intake air cutoff valve is caused to be open and closed selectively.

REFERENCES:
patent: 4512152 (1985-04-01), Asaba
patent: 4849897 (1989-07-01), Ciccarone
patent: 4982567 (1991-01-01), Hashimoto

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