A tank vapor vent valve assembly mounted to the top of the tank wall has a piston actuated by a source of engine vacuum which maintains a fill vapor exit closed until the gas cap is removed to relieve the vacuum and allow the piston to open.
申请公布号
USRE34518(E)
申请公布日期
1994.01.25
申请号
US19920905589
申请日期
1992.06.26
申请人
GENERAL MOTORS CORPORATION
发明人
COVERT, CHARLES H.;TURNER, KENNETH W.;SHERWOOD, CARL H.;GIFFORD, WILLIAM E.;WAGNER, RICHARD W.
