초록 ▼

The improved fuel injection valve assembly includes a valve body adapted for mounting in a cylinder head of a reciprocating gas engine including a valve seat sealing between the cylinder head and the valve body; a valve stem with a frustoconical end portion sealingly engaging the valve seat with ste

The improved fuel injection valve assembly includes a valve body adapted for mounting in a cylinder head of a reciprocating gas engine including a valve seat sealing between the cylinder head and the valve body; a valve stem with a frustoconical end portion sealingly engaging the valve seat with stem threads at the opposite end for a tappet nut; a spring biasing the frustoconical end portion into sealing engagement with the valve seat; a stem piston guiding the valve stem within the valve body; an annular seal sealing the annulus between the valve body and the stem piston; an oil permeable bushing with a lubricating fluid reservoir positioned between the stem piston and the valve body; a rocker arm pivotally mounted on a rocker arm support mounted on the cylinder head; a push rod engaging one end of the rocker arm; and a tappet button positioned on the opposite end of the rocker arm. This improved fuel injection valve assembly allows lateral removal of the tappet button from the rocker arm to allow the rocker arm to pivot to a first position allowing disconnection of the push rod from the rocker arm which allows the rocker arm to pivot to a second position allowing the fuel injection valve to be serviced in place or removed from the cylinder head for replacement without removing the rocker arm or rocker arm support.

대표청구항 ▼

A fuel injection valve assembly for use in a reciprocating gas engine, comprising: a valve body adapted for mounting in a cylinder head of a reciprocating gas engine, said cylinder head communicating with a combustion chamber in said engine; a valve seat sealing between said cylinder head and said v

A fuel injection valve assembly for use in a reciprocating gas engine, comprising: a valve body adapted for mounting in a cylinder head of a reciprocating gas engine, said cylinder head communicating with a combustion chamber in said engine; a valve seat sealing between said cylinder head and said valve body; a valve stem with a frustoconical end portion sealingly engaging said valve seat and stem threads at the opposite end of said valve stem from said frustoconical end portion; a spring maintaining said frustoconical end portion of said valve stem in sealing engagement with said valve seat, a stem piston annularly disposed between said valve stem and said valve body, guiding said valve stem within said valve body; said stem piston and said valve body defining an annular volume therebetween to receive an annular seal sealing the annulus between said valve body and said stem piston, said annular seal positioned to allow the incoming fuel flow to cool the lower portion of said stem piston and said annular seal adjacent thereto. A method for servicing a pushrod actuated fuel injection valve mounted in cylinder head of a reciprocating gas engine without removing a rocker arm or a rocker arm support, comprising the steps of: (a) removing a tappet button laterally from said rocker arm, (b) pivoting said rocker arm to a first position allowing disconnection of a pushrod from said rocker arm, (c) pivoting said rocker arm to a second position allowing said fuel injection valve to be serviced or removed from said cylinder head for replacement.