Patent ID: 8347691
Filing Date: 2013-01-08
Classification: F02M

Abstract:
1. An apparatus for checking leakage of fluid from a fuel vapor processing apparatus including a canister capable of communicating with a fuel tank of an automobile via a communication passage, comprising: a passage interrupting device provided in the communication passage; a first pressure detecting device capable of detecting a first pressure, the first pressure being a pressure within the canister or a pressure equivalent to the pressure within the canister; and a second pressure detecting device capable of detecting a second pressure, the second pressure being a pressure within the fuel tank or a pressure equivalent to the pressure within the fuel tank; wherein in the state that the first pressure is negative and the second pressure is positive, the passage interrupting device can interrupt communication between a side of the canister and a side of the fuel tank for checking leakage of fluid from the fuel vapor processing apparatus.