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US 2016/0108875 A1Published application
High pressure pump for a fuel injection system
AssigneeRobert Bosch GmbH
InventorsMarco Lamm, Friedrich Boecking
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AssigneeRobert Bosch GmbH
InventorsMarco Lamm, Friedrich Boecking
Estimating the term…
The invention relates to a high pressure pump for a fuel injection system, in particular a common rail injection system, comprising a housing part (1) with a bore (2), in which a pump piston (3) is received such that it can be moved with a reciprocating movement, which pump piston (3) is supported via a tappet assembly (4) on a cam (5) or eccentric and delimits a pump working chamber (6) in the axial direction, which pump working chamber (6) can be filled with fuel via an upstroke valve (7) which is integrated into the high pressure pump. According to the invention, a feed bore (8) is configured in the housing part (1) in order to supply the upstroke valve (7) with fuel, which feed bore (8) is connected to a bore (11) of a further housing part (12), which bore (11) connects a pump interior chamber (9) and a tappet chamber (10).
A high pressure pump for a fuel injection system, comprising a housing part (1) with a bore (2), in which a pump piston (3) is accommodated in such a way that the pump piston can be moved with a reciprocating motion, which pump piston (3) is supported via a tappet assembly (4) on a cam (5) or eccentric and delimits a pump working chamber (6) in an axial direction, which pump working chamber (6) is configured to be filled with fuel via a suction valve (7), which is integrated into the high pressure pump, characterized in that a feed bore (8) is formed in the housing part (1) in order to supply the suction valve (7) with fuel, which feed bore (8) is connected to a further bore (11) of a further housing part (12), which further bore (11) connects a pump interior chamber (9) and a tappet chamber (10).
Dependencies are inferred from the claim text.