Inline multi pump coupling system

Abstract

This invention pertains to an inline pump coupling system for use with a diesel engine, designed to place an additional high pressure oil pump behind the existing high pressure oil pump for the diesel engine, and which doubles the high pressure oil volume output from the pumps to the diesel engine injectors. The pump coupling system consists of a replacement shaft portion, the pump coupler that fits intermediate the pair of aligned pumps, and a shaft coupler portion, for coupling the shafts of the inline pumps together. The replacement shaft has a shaped back end that matingly engages within the shaft coupler of the back pump, to provide for simultaneous rotation of the pump shafts during generation of the high hydraulic oil pressure developed from a simultaneous operation of the pair of inline pumps.

1 . An inline multi pump coupling system, for coupling a pair of injector oil pumps axially, said pair of pumps including a front pump and a back pump, comprising: 
 a pump coupler having a front and an opposite rear, and a cavity provided within said front, said cavity designed for accommodating the mating and sealed engagement of the rear of said front pump therein, said pump coupler locating between said front pump and said back pump, and said front pump mating with said front of said pump coupler; and,    a replacement shaft provided for locating through said front pump, which when operated furnishes rotation of said replacement shaft and turning of the pumping components of said front pump, and coupling with the rotor of said back pump to attain simultaneous rotation of said front pump and said back pump, and to pressurize oil from said front pump and said back pump for supplying the injectors of a diesel engine.    
   
   
       2 . The inline multi pump coupling system of  claim 1  further comprising: 
 a shaft coupler having two opposed ends, a shaped cavity provided in one end for accommodating the insertion of said replacement shaft therein, and fastening means provided upon a back end of said shaft coupler for engagement within the rotor of said back pump, so that as said replacement shaft rotates, the rotor of said back pump simultaneously rotates, to provide for simultaneous rotation of said front pump and said back pump.    
   
   
       3 . The inline multi pump coupling system of  claim 1  further comprising: 
 said pump coupler having a plurality of passages for the admission of oil into said back pump and for the release of pressurized oil from said back pump as said front pump axially couples to said back pump, said passages locating outwards of said cavity.    
   
   
       4 . The inline multi pump coupling system of  claim 3  further comprising: 
 said pump coupler having an inlet port and an adjacent secondary inlet port for receiving oil from said diesel engine then connecting to said passages for communicating oil into said back pump, and an outlet port for releasing oil from said back pump into said diesel engine.    
   
   
       5 . The inline multi pump coupling system of  claim 1  further comprising: 
 said replacement shaft having a generally cylindrical form, a fore end and an aft end, said aft end locating in the direction of said back pump; and,    said aft end connecting to said shaft coupler.    
   
   
       6 . The inline multi pump coupling system of  claim 5  further comprising: 
 said aft end having a male tang for insertion into said cavity of said shaft coupler.    
   
   
       7 . The inline multi pump coupling system of  claim 5  further comprising: 
 said cavity of said shaft coupler having a plurality of internal teeth; and,    said aft end having a plurality of external teeth, said aft end connecting to said cavity in a spline.    
   
   
       8 . The inline multi pump coupling system of  claim 1  further comprising: 
 said shaft coupler having a front side and an opposite rear side, said font side having a cavity for receiving said replacement shaft, and said rear side having a male protrusion for engaging the rotor of said back pump.    
   
   
       9 . The inline multi pump coupling system of  claim 8  wherein said replacement shaft has a tang upon one end, said front side has a slot the provides a pinch fit upon said tang when said tang is inserted into said cavity.  
   
   
       10 . The inline multi pump coupling system of  claim 1  further comprising: 
 said shaft coupler having a stud portion and a coupler portion;    said stud portion having a threaded stud coaxial with a head having greater width than said stud, said stud and said head being threaded; and,    said coupler portion having a generally cylindrical form with a cavity for receiving said replacement shaft and a threaded opening opposite said cavity for connecting to said head.