| 摘要 |
A method for measuring initial hydrocarbon concentration in a canister, a fuel injection quantity control method using the same and a system thereof are provided to measure hydrocarbon concentration stored in the canister by flowing hydrocarbon absorbed to the canister into an engine through a purge control solenoid valve. A method for measuring initial hydrocarbon concentration in a canister comprises: a state decision module(210) which is connected to sensors(175,70,80,55,115) and determines the transport condition of a vehicle; a hydrocarbon inflow module(220) flowing the hydrocarbon of a canister into an engine; a hydrocarbon concentration calculation module(230) calculating the initial hydrocarbon concentration of the canister and air volume flowed in the cylinder base on the amount of oxygen included in the measured value and exhaust gas of the sensors; and a spray amount control module(250) controlling the injection rate of the fuel base on the transport condition of the vehicles, the initial hydrocarbon concentration of the canister and the air volume flowed in the cylinder.
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