Pump device and fuel supply device for internal combustion engines, in particular for motor vehicles

A fuel supply and pump device technology, applied in the field of motor vehicle pump devices and mixing devices

Active Publication Date: 2021-04-20
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So, for example, the fuel flowing through the low-pressure outlet is not compressed by means of the high-pressure fuel pump

Method used

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  • Pump device and fuel supply device for internal combustion engines, in particular for motor vehicles
  • Pump device and fuel supply device for internal combustion engines, in particular for motor vehicles
  • Pump device and fuel supply device for internal combustion engines, in particular for motor vehicles

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 A pump arrangement according to a first embodiment is shown in a schematic sectional view, which is indicated as a whole as 11 . The pump arrangement 11 includes a high pressure fuel pump 10 . Taking into account the drawings together with Figure 7 , it can be seen that the pump device 11 and thus the high-pressure fuel pump 10 is a constituent part of the fuel supply device, denoted 12 in its entirety, by means of which fuel, in particular liquid fuel, can be supplied to the internal combustion engine. For example, the fuel may be diesel fuel or gasoline. For example, internal combustion engines are used to drive motor vehicles, in particular passenger motor vehicles, wherein the internal combustion engine can be designed as a reciprocating piston internal combustion engine.

[0047] Internal combustion engines have combustion chambers in the form of a plurality of cylinders into which fuel is fed. In addition, air is fed to the combustion chambers so tha...

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PUM

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Abstract

The invention relates to a pump device (11) for an internal combustion engine, in particular a motor vehicle, having a high-pressure fuel pump (10) for supplying fuel to a first injection device (14) of the internal combustion engine; said pump device comprises : at least one low-pressure inlet (31), via which fuel can be delivered from the low-pressure fuel pump (28) to the high-pressure fuel pump (10); at least one low-pressure outlet (37) for delivering by means of the low-pressure fuel pump (28) and the fuel delivered to the high-pressure fuel pump (10) via the low-pressure inlet (31) is led from the high-pressure fuel pump (10); and at least one low-pressure connection (39) for the fuel delivered by means of the low-pressure fuel pump (28) The fuel is led to a second injection device (20) provided in addition to the first injection device (14), wherein the pump device is provided with at least one mixing zone (64) for mixing the Fuel is fed to the mixing zone (64) from the low pressure fuel pump (28) upstream of the high pressure fuel pump (10), wherein the low pressure port (39) is fluidly connected to the mixing zone (64) and from the mixing zone (64 ) of fuel can be supplied to the low pressure inlet (31).

Description

technical field [0001] The invention relates to a pump device, a fuel supply device and a mixing device, in particular for motor vehicles. Background technique [0002] A pump device of this type and a fuel supply device of this type for an internal combustion engine, in particular for a motor vehicle, have already appeared, for example, in US 2012 / 0312278 A1 and are therefore known therefrom. The fuel supply device is used to supply fuel, in particular liquid fuel, to the internal combustion engine. The fuel supply device includes a first injection device for enabling direct injection of fuel. This means that the internal combustion engine has at least one combustion chamber into which fuel can be injected directly by means of the first injection device. [0003] Furthermore, in addition to the first injection device, the fuel supply device includes a second injection device provided for enabling intake manifold injection of fuel. During intake manifold injection of fuel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M53/00F02M59/44F02M63/02F02D41/30F02M55/02B01F3/00B01F23/00
CPCF02M63/029F02M53/00F02D41/3094F02M55/02F02D41/3854F02M63/0001F02D2041/3881F02M37/043F02M53/043F02M59/16F02M69/02F02M69/462F02M2200/315
Inventor Y.库尔特M.毛尔
Owner VTESCO TECH GMBH
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