START ENRICHMENT CIRCUIT FOR INTERNAL COMBUSTION ENGINE FUEL CONTROL SYSTEM

摘要

EEC 76-12 START ENRICHMENT CIRCUIT FOR INTERNAL COMBUSTION ENGINE FUEL CONTROL SYSTEM Disclosed herein is a start enrichment circuit for an electronic fuel control system when the engine temperature is above or below its nominal operating temperature range. The circuit produces a start enrichment signal having an initial temperature dependent value while the starter is being energized which decay as a function of time after the engine starts. The preferred embodiment also provides a start enrichment signal within the nominal engine temperature range when the exhaust gas recirculation valve is in an activated state.