METHOD FOR CONTROLLING FUEL SWITCHING IN BI-FUEL VEHICLE

摘要

A method for controlling fuel switching of a fuel switching system in a vehicle via a controller configured to receive one or more measured signals in order to issue a fuel shortage warning or in order to control fuel switching is disclosed. The system includes an LPG rail pressure sensor for measuring a pressure in an LPG rail, and a bombe pressure sensor for measuring a pressure in the bombe. The method includes a first LPG rail pressure determining step of determining whether the pressure in the LPG rail is lower than a second reference value or not and a first bombe pressure determining step of determining whether the pressure in the bombe is lower than a third reference value or not. If at least one of the first pressure determining steps is positive, the method further includes switching the fuel to gasoline.

主权项

1. A method for controlling fuel switching of a fuel switching system in a vehicle via a controller configured to receive one or more measured signals in order to issue a fuel shortage warning or in order to control fuel switching, the system including an LPG level sensor for measuring an LPG level in a bombe, an LPG rail pressure sensor for measuring a pressure in an LPG rail, and a bombe pressure sensor for measuring a pressure in the bombe, the method comprising:
determining whether the LPG level is lower than a first reference value or not; if the LPG level is higher than the first reference value, maintaining running of the vehicle on LPG; a first LPG rail pressure determining step of determining whether the pressure in the LPG rail is lower than a second reference value or not if the LPG level is lower than the first reference value; and a first bombe pressure determining step for determining whether the pressure in the bombe is lower than a third reference value or not if the LPG level is lower than the first reference value.