Patent ID: 6357415
Filing Date: 2002-03-19
Classification: F02M,Y10T

Abstract:
A fuel shut-off device for an internal combustion engine comprising:a cylindrical body having a fuel inlet, a fuel passage inside said cylindrical body, a fuel outlet, and a valve seat disposed between said fuel inlet and fuel outlet; a piston having a slide portion disposed to slide in said fuel passage, a valve body integrated with said slide portion and extending axially therefrom to shut off said fuel passage when it is seated on said valve seat, a center bore connected to said fuel inlet, and a restriction aperture connecting said center bore and said fuel passage between said slide portion and said valve seat; and a biasing means, disposed between said slide portion and said valve seat, for biasing said piston to unseat said valve body from said valve seat, wherein said valve body has a cylindrical surface having an outside diameter smaller than said slide portion, said slide portion has a shoulder formed between said slide portion and said valve body to support an end of said coil spring around said valve body, and said restriction aperture is formed at said valve body.