A method and apparatus for controlling engine torque during an in-service test

摘要

houses an evaporative control valve module that closes a canister purge valve during system diagnostics. A torque determination module determines a change in torque for an end of the system diagnosis. A torque adjustment module changes engine torque to a changed torque that corresponds to the change in torque. The evaporative control valve module opens the purge valve at the end of the diagnosis.