{
  "$type": "site.standard.document",
  "description": "A leak detection module may include a housing and a canister valve solenoid (CVS) arranged within the housing and in fluid communication along a first fluid passageway between canister and atmospheric ports. The leak detection module may include a second fluid passageway in parallel with the first…",
  "path": "/patents/1374390",
  "publishedAt": "2026-06-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M25/0809",
    "STONERIDGE ASIA PACIFIC ELECTRONICS (SUZHOU) CO. LTD."
  ],
  "textContent": "A leak detection module may include a housing and a canister valve solenoid (CVS) arranged within the housing and in fluid communication along a first fluid passageway between canister and atmospheric ports. The leak detection module may include a second fluid passageway in parallel with the first fluid passageway and fluidly connected to the canister and atmospheric ports. A CVS check valve is arranged in the second fluid passageway and a volatile organic compound (VOC) gas sensor is arranged in one of the first and second passageways, configured to measure the concentration of hydrocarbons (HC) therethrough. A mass flow meter is arranged in one of the first and second passageways to determine a mass flow rate from the canister port to the atmospheric port. A controller measures the quality of the emissions by monitoring the HC and communicates the result to a base station.",
  "title": "Evaporative emissions leak check module with VOC measurement"
}