Patent ID: 9145857
Filing Date: 2015-09-29
Classification: F02D,F02M

Abstract:
1. An evaporative emission control device comprising: a control unit; a connecting passage that connects an intake passage of an internal combustion engine and a fuel tank; a canister that absorbs a fuel evaporative gas existing in the connecting passage; a connecting passage opening/closing unit, controlled by the control unit, that opens/closes connection between the connecting passage and the intake passage; a canister opening/closing unit, controlled by the control unit, that opens/closes the canister so that the canister is connected to or disconnected from the connecting passage; and a tank opening/closing unit, controlled by the control unit, that opens/closes the fuel tank so that the fuel tank is connected to or disconnected from the connecting passage, wherein the control unit carries out (a) a predetermined purge in which the canister and the fuel tank are closed by switching the canister opening/closing unit and the tank opening/closing unit to a closed position, and the fuel evaporative gas existing in the connecting passage is supplied to the internal combustion engine by switching the connecting passage opening/closing unit to an open position, and then, (b) the control unit switches the connecting passage opening/closing unit to a closed position and the canister opening/closing unit to an open position so that the canister is opened to the connecting passage.