Claims:1. A fuel injection pump (100) for an internal combustion engine, the
fuel injection pump (100) comprising a low pressure inlet valve (102) and
at least a high pressure outlet valve (103), the low pressure 5 inlet valve
(102) in fluid communication with the inlet (101) of the fuel pump , the
low pressure inlet valve (102) having a ball (1021) placed on a low
pressure valve seat, the high pressure outlet valve (103) in fluid
communication with outlet (104) of the fuel pump , the high pressure
10 outlet valve (103) having another ball (1021) placed on a high pressure
valve seat, characterized in that fuel pump: the valve seat (1022)having a
diamond like carbon (DLC) coating.
2. The fuel injection pump (100) for an internal combustion engine as
claimed in claim 1, where the low pressure valve seat (1022) has a
diamond like carbon (DLC) coating.
3. The fuel injection pump (100) for an internal combustion engine as
claimed in claim 1, where the high pressure valve seat (1022) has a
diamond like carbon (DLC) coating.
4. The fuel injection pump (100) for an internal combustion engine as
claimed in claim 1, where both the low pressure valve seat (1022)and the high pressure valve seat (1022) have a diamond like carbon (DLC)
coating. , Description:The present disclosure proposes a fuel injection pump (100). The fuel
injection pump (100) comprises a low pressure inlet valve (102) and at
least a high pressure outlet valve (103). The low pressure 5 inlet valve (102)
has a ball (1021) placed on a low pressure valve seat. The high pressure
outlet valve (103) has another ball (1021) placed on a high pressure valve
seat. The fuel pump is characterized by the valve seat (1022) having a
diamond like carbon (DLC) coating. In a first embodiment of the present
10 invention, the low pressure valve seat (1022) has a diamond like carbon
(DLC) coating. In a second embodiment of the present invention, the high
pressure valve seat (1022) has a diamond like carbon (DLC) coating. In a
third embodiment of the present invention, both the low pressure valve
seat (1022) and the high pressure valve seat (1022) have a diamond like
15 carbon (DLC) coating.

Figure 1.