Method and apparatus for preventing engine stall of vehicle

An apparatus for preventing an engine stall of a vehicle, comprising:

• a fuel injection device for pressurizing fuel stored in a fuel tank by a high-pressure fuel pump to transmit the fuel to a common rail, and injecting the fuel temporarily stored in the common rail into an engine through an injector;
• a high-pressure fuel pressure sensor for measuring high-pressure fuel pressure at a downstream side of the high-pressure fuel pump;
• and
• an engine control unit for determining whether or not a drift occurs in an output signal of the high-pressure fuel pressure sensor, and upon occurrence of the drift, performing a fuel pressure control by replacing a high-pressure fuel pressure value with a predetermined pressure value based on the output signal of the high-pressure fuel pressure sensor.

An apparatus for preventing an engine stall of a vehicle, comprising:

• a fuel injection device for pressurizing fuel stored in a fuel tank by a high-pressure fuel pump to transmit the fuel to a common rail, and injecting the fuel temporarily stored in the common rail into an engine through an injector;
• a high-pressure fuel pressure sensor for measuring high-pressure fuel pressure at a downstream side of the high-pressure fuel pump;
• and
• an engine control unit for determining whether or not a drift occurs in an output signal of the high-pressure fuel pressure sensor, and upon occurrence of the drift, performing a fuel pressure control through a low-pressure control based on low-pressure fuel pressure at an upstream side of the high-pressure fuel pump without using the output signal of the high-pressure fuel pressure sensor.