EVAPORATIVE EMISSIONS LEAK CHECK MODULE WITH INTEGRATED CONTROL AND COMMUNICATION SYSTEM

    公开(公告)号:US20230095906A1

    公开(公告)日:2023-03-30

    申请号:US17882055

    申请日:2022-08-05

    Abstract: A leak detection module (LDM) includes a housing, a canister valve solenoid (CVS) that is arranged within the housing and in fluid communication along a first fluid passageway between first and second ports. The module also includes a pump that is arranged within the housing and is in fluid communication with the first and second ports, and a pressure sensor that is in fluid communication with at least one of the first and second ports. A first controller is arranged in the housing and is in communication with the pump, the CVS and the pressure sensor. The first controller runs a test procedure using the pump and operating the CVS between open and closed positions to monitor a pressure within the module. The first controller communicates a result based upon the monitored pressure to a second controller that is arranged outside the housing and remotely from the module.

    Low stiction vane pump for evaporative emissions system

    公开(公告)号:US12085045B1

    公开(公告)日:2024-09-10

    申请号:US18364098

    申请日:2023-08-02

    CPC classification number: F02M25/0836

    Abstract: A vane pump includes a housing that provides a bore in fluid communication with an inlet passageway and an outlet passageway, and a rotary assembly that is arranged within and configured to rotate relative to the bore. The rotary assembly includes a rotor that is mounted to a shaft and has multiple slots. The rotor has a first and second faces that engage the housing. A vane is received in each of the slots, each vane has first and second surfaces that extend a length in a longitudinal direction from a first end portion to a second end portion. The first end portion is received in its respective slots. The rotary assembly includes a recess on at least one of the first face, the second face, the first surface of the first portion, and the second surface of the first portion.

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