Natural gas fuel metering assembly and engine with same

The present invention relates to a natural gas fuel metering assembly for a natural gas engine and in particular to a metering assembly that is conveniently mounted to an engine block and has temperature and pressure sensors positioned in the fuel stream immediately before the fuel injectors to provide pressure and temperature sensing of the fuel at the point of metering. A fuel metering assembly for a natural gas fuel engine having an engine block from a diesel engine with a diesel engine injector pump flange integrally cast as part of the engine block. The metering assembly has inlet and outlet manifolds for fuel and a plurality of fuel injectors therebetween. The manifolds are held in a fixed position relative to one another by a plate on one end that fits to the injector pump flange on the engine block to mount the metering assembly to the existing flange. In addition, the inlet manifold includes pressure and temperature sensors inside the inlet manifold to sense pressure and temperature at the point of metering.