Injection pump for a piston engine
AssigneeWäRtsilä Finland Oy
InventorsMatti Koivunen, Matts Friis, Thomas Hägglund
Life of this patent
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Abstract
A fuel injection pump for a piston engine, the pump comprising a cylinder element having a pressure plenum provided with an outlet chamber for removing pressurized fuel from the pressure plenum, a piston arranged to reciprocate inside the pressure plenum, an inlet chamber arranged outside the pressure plenum and at least one inlet channel arranged between the pressure plenum and the inlet chamber. At least one fill channel provided with a non-return valve is arranged between the pressure plenum and the inlet chamber, the valve allowing fuel flow from the inlet chamber to the pressure plenum but preventing flow from the pressure plenum to the inlet chamber.
Claims11
A fuel injection pump for a piston engine, the pump comprising:
- a cylinder element having a pressure plenum provided with an outlet channel for removing pressurized fuel from the pressure plenum,
- a piston arranged to reciprocate in the pressure plenum,
- an inlet chamber arranged outside the pressure plenum, and
- at least one inlet channel arranged between the pressure plenum and the inlet chamber,
- wherein at least one fill channel provided with a non-return valve is arranged between the pressure plenum and the inlet chamber, the non-return valve allowing fuel flow from the inlet chamber to the pressure plenum but preventing flow from the pressure plenum to the inlet chamber.
A fuel injection pump for a piston engine, the pump comprising:
- a cylinder member defining a pressure plenum, an outlet chamber for removing pressurized fuel from the pressure plenum, an inlet chamber outside the pressure plenum, at least one inlet channel providing communication between the inlet chamber and the pressure plenum, and at least one fill channel for supplying fuel from the inlet chamber to the pressure plenum, and
- a piston fitted in the pressure plenum to reciprocate therein,
- and wherein each fill channel is provided with a non-return valve that allows fuel flow from the inlet chamber to the pressure plenum but prevents flow from the pressure plenum to the inlet chamber.
Dependencies are inferred from the claim text.