US 7,591,252 B1
Gas vapor control system
Yong Jung Park, Suwon (Korea, Republic of)
Assigned to Hyundai Motor Company, Seoul (Korea, Republic of)
Filed on Nov. 12, 2008, as Appl. No. 12/269,635.
Claims priority of application No. 10-2008-0043039 (KR), filed on May 08, 2008.
Int. Cl. F02M 33/02 (2006.01)
U.S. Cl. 123—520  [123/519] 17 Claims
OG exemplary drawing
 
1. A gas vapor control system that controls gas vapor that is generated in a fuel tank, the system comprising:
a canister in which gas vapor is captured;
a throttle valve that is mounted in an intake passage through which air passes;
a gas vapor passage connecting the fuel tank to a portion of the intake passage displaced before the throttle valve, wherein the canister is positioned at the gas vapor passage;
a purge control valve that is mounted on the gas vapor passage; and
a controller that stops an engine in an idle stop condition, and that closes the throttle valve and opens the purge control valve to flow the gas vapor of the canister into the intake passage when a canister load value (CL) is higher than a predetermined value.