VEHICLE FUEL INJECTION CONTROL METHOD, DEVICE AND SYSTEM

摘要

A vehicle fuel injection control method comprises: determining if an engine is in the flameout state (S101); if the engine flameout is determined, identifying the fuel used in the engine flameout (S102); if the fuel used in the engine flameout is identified as combustible gas, controlling an fuel injector of the vehicle to inject fuel for a first preset time after the engine flameout (S103). Injecting fuel enables small fuel droplets to atomize and form an oil film on the cylinder wall and the throttle valve, acting as a lubricant in the next starting of the engine. Abrasion between the engine piston and cylinder wall is reduced compared with that in the combustible gas injection, and therefore the service life of the engine is prolonged. A vehicle fuel injection control device and a vehicle fuel injection control system are also provided.