CPC F02D 41/222 (2013.01) [F02D 41/0037 (2013.01); F02D 41/0045 (2013.01); F02M 25/0836 (2013.01); F02D 2041/223 (2013.01); F02D 2041/228 (2013.01)] | 20 Claims |
7. A system, comprising:
a fuel tank;
a first canister coupled to the fuel tank via a fuel vapor conduit;
a second canister arranged between the first canister and a third canister, the third canister arranged between the second canister and a hydrocarbon sensor;
a first canister bypass coupled to the fuel vapor conduit and a first junction between the first canister and the second canister;
a second canister bypass coupled to the first junction and a second junction between the second canister and the third canister;
a third canister bypass coupled to the second junction and the hydrocarbon sensor;
a first bypass valve arranged in the first canister bypass, a second bypass valve arranged in the second canister bypass, and a third bypass valve arranged in the third canister bypass; and
a controller comprising instructions stored on non-transitory memory thereof that when executed cause the controller to:
execute a diagnostic to determine a condition of a fuel tank pressure transducer (FTPT) in response to feedback from the hydrocarbon sensor.
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