Plug-in pump for a common-rail system and engine arrangement having an internal combustion engine, having a common-rail system and having a plug-in pump
View Patent ↗A plug-in pump for a common-rail system has a pump housing having a cylinder formed therein and a piston guided in the cylinder, a fuel inlet, and a fuel outlet. The pump housing also includes a plug-in section for inserting the pump housing into an opening of an engine component, and a flange that delimits the plug-in section, for fastening the pump housing to the engine component. To cool the plug-in pump, the pump housing has at least one flow duct with a separate fluid inlet and a separate fluid outlet. The fluid inlet is connectable to a fluid-discharging line of the internal combustion engine, and the fluid outlet is connectable to a fluid-receiving line of the internal combustion engine.
1. A plug-in pump for a common-rail system, the plug-in pump comprising:
a pump housing having a cylinder formed therein,
a piston guided in the cylinder,
a fuel inlet, and
a fuel outlet,
wherein the pump housing further includes:
a plug-in section configured to be inserted into an opening in an engine component, and
a flange that delimits the insertion of the plug-in section into the opening in the engine component,
at least one flow duct having a flow duct fluid inlet and a flow duct fluid outlet,
wherein the flow duct fluid inlet is configured for connection to a fluid-discharging line of the internal combustion engine and the fluid outlet is configured for connection to a fluid-receiving line of the internal combustion engine; and
a first fluid connection of the fluid-discharging line in a connecting region on the engine component,
wherein the fluid inlet is disposed on the flange and aligned to the first fluid connection when the plug-in pump is mounted on the engine component.
2. The plug-in pump of claim 1 , wherein the fluid inlet has a hole which is arranged in a region which is averted from the flange and which can be connected to a connection structure.
3. The plug-in pump of claim 1 , wherein the fluid outlet is a hole which is arranged in a region which is averted from the flange and which can be connected to a connection structure.
4. The plug-in pump of claim 1 , wherein the flow duct has an at least partially circumferential groove which can be sealed off by a circumferential seal over the flange on the engine component.
5. The plug-in pump of claim 1 , wherein a second fluid connection is arranged in a connecting region on the engine component, said second fluid connection being in alignment with a fluid outlet on the flange when the plug-in pump is mounted on the engine component.
6. An engine arrangement, comprising:
an internal combustion engine, and
a common-rail system, comprising:
a plug-in pump comprising:
a pump housing having a cylinder formed therein,
a piston guided in the cylinder,
a fuel inlet, and
a fuel outlet,
wherein the pump housing further includes:
a plug-in section configured to be inserted into an opening in an engine component, and
a flange that delimits the insertion of the plug-in section into the opening in the engine component,
at least one flow duct having:
a flow duct fluid inlet connected to a fluid-discharging line of the internal combustion engine, and
a flow duct fluid outlet connected to a fluid-receiving line of the internal combustion engine; and
a first fluid connection of the fluid-discharging line in a connecting region on the engine component,
wherein the fluid inlet is disposed on the flange and aligned to the first fluid connection when the plug-in pump is mounted on the engine component.
7. The engine arrangement of claim 6 , wherein the fluid-discharging line and the fluid-receiving line are constituent parts of a cooling circuit of the engine.
8. The engine arrangement of claim 6 , wherein the fluid-discharging line and the fluid-receiving line are components of an oil circuit of the internal combustion engine.
9. The engine arrangement of claim 6 , wherein the fluid inlet has a hole which is arranged in a region which is averted from the flange and which can be connected to a connection structure.
10. The engine arrangement of claim 6 , wherein the fluid outlet is a hole which is arranged in a region which is averted from the flange and which can be connected to a connection structure.
11. The engine arrangement of claim 6 , wherein the flow duct has an at least partially circumferential groove which can be sealed off by a circumferential seal over the flange on the engine component.
12. The engine arrangement of claim 6 , wherein a second fluid connection is arranged in a connecting region on the engine component, said second fluid connection being in alignment with a fluid outlet on the flange when the plug-in pump is mounted on the engine component.