Claims:1. A common-rail fuel injection system (100) for an engine, comprising:
- a fuel supply pump (102) adapted to pressurize drawn fuel and discharge the
fuel from common rail (110) through a plurality of the injectors (105),
- a fuel tank (108) connected to the fuel supply pump (102), by way of the filter
(106) and adapted to accumulate the fuel at high pressure;
characterized in that, the fuel supply pump (102) comprises:
- a suction valve (112) located at the top end of the fuel supply pump (102),
wherein the suction valve is adapted to meter the fuel quantity at the top of
the fuel pump (102).
2. The common-rail fuel injection system (100) as claimed in claim 1, wherein said
suction valve (110) is an electrically actuated suction valve (e-valve).
3. The common-rail fuel injection system (100) as claimed in claim 1, the system
(100) further comprises an electronic control unit (ECU) (104) connected to said
fuel supply pump (102), wherein said ECU (104) adapted to control at least one
operation of said suction valve (112).
4. The common-rail fuel injection system (100) as claimed in claim 1, wherein said
fuel supply pump (102) further comprises an inlet connector (114) is provided
with an overflow valve (116).
5. The common-rail fuel injection system (100) as claimed in claim 3, wherein said
inlet connector (114) and overflow valve (116) adapted to maintain pressure in
front of the suction valve (112). , Description:A common-rail fuel injection system (100) for an engine is provided. The system (100)
comprises a fuel supply pump (102) adapted to pressurize drawn fuel and discharge
the fuel from common rail (110) through a plurality of the injectors (105). Further, the
system (100) comprises a fuel tank (108) connected to the fuel supply pump (102), by
way of the filter (106) and adapted to accumulate the fuel at high pressure.
Furthermore, the fuel supply pump (102) comprises a suction valve (112) located at
the top end of the fuel supply pump (102). The suction valve is adapted to meter the
fuel quantity at the top of the fuel pump (102). Further, the system (100) comprises an
electronic control unit (ECU) (104) connected to the fuel supply pump (102). The ECU
(104) adapted to control at least one operation of the suction valve (112).