METHOD AND SYSTEM FOR GASEOUS AND LIQUID FUEL INJECTION

摘要

Methods and systems are provided for injecting liquid and gaseous fuel, such as propane, to an engine. In one example, under a first condition, liquid fuel from a bottom of a fuel tank is injected; under a second condition, liquid fuel from a the bottom of the fuel tank is vaporized and injected to the engine as vaporized liquid fuel; and under a third condition, gaseous fuel from a top of the fuel tank is injected to the engine.

主权项

1. A method for operating an engine, comprising:
under a first condition, injecting liquid fuel to the engine; under a second condition, injecting vaporized liquid fuel to the engine; and under a third condition, injecting gaseous fuel to the engine.