| 摘要 |
A fuel supply pump, which is simple in construction and easy to produce and is capable of efficiently pressurizing a high flow rate of fuel, is provided. The fuel supply pump ( 50 ) includes a housing ( 52 ), a plunger barrel ( 53 ), a plunger ( 54 ) for pressurizing fuel, which is installed in the plunger barrel ( 53 ) so as to be allowed to move up and down, a cam ( 60 ) installed in rotation way below the plunger ( 54 ), a tappet structure body ( 6 ) installed between the cam ( 60 ) and the plunger ( 54 ) to transmitting the turning force, serving as a lifting force, from the cam shaft ( 3 ) to the plunger ( 54 ), a tappet structure body ( 6 ) installed between the cam ( 60 ) and the plunger ( 54 ) and provided for transmitting a upward or downward movement of the cam ( 60 ) caused by the rotation of the camshaft ( 3 ) to the plunger ( 54 ); and a return spring ( 68 ) for setting lowering force to the plunger ( 54 ), which is installed between the tappet structure body ( 6 ) and the plunger barrel ( 53 ).
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