Patent ID: 8151761

Claim:
A vehicle engine ( 10 ) comprising: a cylinder ( 20 ) which defines therein a combustion chamber ( 21 ) and defines thereon a valve seat ( 22 ); a spark plug ( 30 ) which is disposed at the cylinder near the valve seat ( 22 ); an intake port ( 40 ) which is connected to the cylinder ( 20 ) to be in fluid communication with the combustion chamber; an intake valve body ( 50 ) which is provided within the intake port and includes at one end portion thereof a valve seat face ( 51 ) being inclined corresponding to the valve seat and having an opening ( 52 ) thereon; a hollow intake valve ( 60 ) which is housed in the intake valve body and is provided with an outlet ( 61 ) extending to the opening ( 52 ) of the valve seat face; and wherein said outlet ( 61 ) and said opening ( 52 ) of the valve seat face are configured and arranged so that fluid passing there through passes without impediment.