| US 7,614,387 B2 | ||
| External fuel vapor emission adjusting device for fuel tank | ||
| Aaron Wang, Taoyuan (Taiwan); and Chun-Chao Huang, Taoyuan (Taiwan) | ||
| Assigned to Sentec E & E Co., Ltd., Taoyuna (Taiwan) | ||
| Filed on Jul. 02, 2007, as Appl. No. 11/772,245. | ||
| Claims priority of application No. 96117649 A (TW), filed on May 17, 2007. | ||
| Prior Publication US 2008/0283127 A1, Nov. 20, 2008 | ||
| Int. Cl. F02M 33/02 (2006.01) | ||
| U.S. Cl. 123—519 [123/520] | 4 Claims |
| 1. A fuel vapor adjusting device comprising:
an expansion chamber at a top portion of a fuel tank;
an oil spill trip valve being connected to the expansion chamber, which can turn off when there's spilling oil or the fuel
tank is fell down; and
at least two canisters, each comprising a fuel vapor entrance port, a fuel vapor outlet port, and a fuel vapor recycling vent,
the fuel vapor entrance port and the fuel vapor outlet port forming a fuel vapor filtering passage, and the fuel vapor entrance
port and the fuel vapor recycling vent forming a fuel vapor recycling passage;
wherein the oil spill trip valve, the at least two fuel vapor filtering passages connect in series, and the oil spill trip
valve, the at least two fuel vapor recycling passages connect in parallel.
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