Patent ID: 7299780

Claim:
A mounting block for a supplementary lube-oil pump in a diesel-engine fuel injection system that supplements a basic lube-oil pump held mounted by a base structure of the diesel engine, adapted for interposing between matching flange surfaces respectively of the base structure and an overhead reservoir that are capable of being mated together to form a sealed joint without said mounting block interposed therebetween; said mounting block comprising: spaced endwalls spacing elongated first and second sidewalls between top and bottom flange surfaces that are adapted for mating the flange surfaces of the overhead reservoir and base structure respectively and hence form respective upper and lower sealed joints; said mounting block being formed with: a vertical lube-oil supply passage extending between openings in the top and bottom flange surfaces and adapted for providing transit to either an upflow of lube oil originating in the base structure that supplies the reservoir or a downflow from the reservoir; a wheel-cavity in communication with other openings in the top and bottom flange surfaces and adapted for providing a drive wheel clearance to spin; a horizontal shaft-cavity originating in an opening in the first sidewall and terminating in the wheel-cavity and adapted for providing a drive shaft of the supplementary pump clearance to extend and attach to the drive wheel in the wheel-cavity therefor; and an outflow passageway originating in the vertical supply passage and terminating in an out-take opening accessible from the first sidewall and adapted for feeding the supplementary pump an intake of lube-oil; wherein the first sidewall is adapted for providing the supplementary pump a surface to mount thereto and seal the opening in the first sidewall for the shaft-cavity, with the drive shaft extended in the shaft-cavity and the drive wheel in the wheel-cavity attached thereto such that driving the drive wheel from a source in the base structure energizes the supplementary pump for pumping the feed of lube-oil taken from the out-take opening and thereby produce a pumped output; and, wherein the basic pump has a branch line for subtracting a branch flow off the output thereof for regulation purposes, which branch line in part is formed in the base structure and has an outlet formed in the flange surface thereof to mate with an inlet opening therefor in the reservoir's mating flange surface, said mounting block being further formed with a series of internal passageways originating in the bottom flange surface thereof and terminating in the top flange surface thereof to provide a sealed conduit between the base structure and reservoir for the branch flow of lube-oil therebetween.