Fuel injection system of IC engine - has regulation for max. efficiency and parallel branch in supply pipe linking chambers of valve and servo control

摘要

The fuel injection system for an internal combustion engine with continuous suction in the suction pipe. The supply of fuel is switched off when the vehicle is running downhill and the air-fuel mixture is only slightly enriched during the heating up phase and during idling or running at constant speed. The air-fuel mixture is enriched when the vehicle is accelerated. The fuel pipe (21) contains a parallel branch (22) which links the lower chambers (7,8) and the upper chambers (5,6) of the differential pressure valves (3,4). The bypass valve starts upstream of the choke. The cross-section of the bypass valve is closed by a regulator controlled by a servo system when the vehicle is travelling downhill. The upper chambers will therefore be shut off w.r.t the lower chambers.