FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND AIR/FUEL RATIO CONTROLLER THEREFOR

摘要

A fuel injection system for an internal combustion engine includes a fuel injection pump (38) and an air/fuel ratio controller (52). The controller has a lever (54) that is connected to the pump lever (50). An aneroid (58) moves lever (54) as a function of changes in intake manifold vacuum to maintain a constant air/fuel ratio to the mixture charge. A fuel enrichment linkage (60) is provided that modifies the movement of the fuel flow control lever (54) by the aneroid in response to changes in manifold gas temperature levels and exhaust gas recirculation to maintain the constant air/fuel ratio. A manual override (122) is provided to obtain a richer air/fuel ratio for maximum acceleration.