Patent ID: 7047929

Claim:
An engine of a fuel injection pump specification which interlockingly operates a pump ( 39 ) for feeding fuel under pressure, by power of a crank shaft ( 1 ), the engine comprising: a gear attaching shaft ( 32 ) having an end to which a pair of gears ( 32 a ) and ( 32 b ) is arranged to be mounted; both of the paired gears ( 32 a ) and ( 32 b ) mounted to the gear attaching shaft ( 32 ); one gear ( 32 a ) of the paired gears ( 32 a ) and ( 32 b ) which serves as a basic gear and the other gear ( 32 b ) which serves as a second gear, the basic gear ( 32 a ) forming a basic gear train ( 14 a ) with a crank gear ( 1 ), the second gear ( 32 b ) defining a second gear train ( 14 b ) with an injection pump input gear ( 34 a ), the basic gear train ( 14 a ) and the second gear train ( 14 b ) constituting a gear train ( 14 ) of a double-layer structure, through which the power of the crank shaft ( 1 ) is transmitted to the fuel injection pump ( 39 ); wherein the second gear train ( 14 b ) has a gear module smaller than a gear module of the basic gear train ( 14 a ).