KR101967700B1

KR101967700B1 - System for the delivery of a fluid

Info

Publication number: KR101967700B1
Application number: KR1020147021483A
Authority: KR
Inventors: 페터 보이그; 토마스 슈미츠바우어; 람쿠마르 바라타라잔; 센틸 쿠마르 셀바라즈
Original assignee: 콘티넨탈 오토모티브 게엠베하
Priority date: 2011-12-30
Filing date: 2012-12-18
Publication date: 2019-04-10
Also published as: EP2769080A1; KR20140108589A; EP2769080B1; WO2013098114A1

Abstract

The system for transferring fluids comprises a pump body 101 and a piston 102 which are axially movable within the pump body 101 and which have a first portion 103 arranged in the pump body 101, Pressure pump (100) having a piston and a second portion (104) arranged outside the pump body (101), the pump body (101) being able to couple with a combustion engine, A second portion 104 of the pump body 102 extends into the combustion engine and the pump body 101 includes a single fluid outlet 122 and a fluid distributor 123, Wherein the fluid dispenser includes a fluid inlet and wherein the fluid inlet is coupled to a fluid outlet of the pump and the dispenser includes a combustion engine The same number of fluid outlets 105, 106 and 107 as the cylinders which are connected to the pipe 108, 109, 110 to direct the respective fluid outlets 105, 106, 107 to the injection device for each cylinder of the combustion engine.

Description

SYSTEM FOR FOR DELIVERY OF A FLUID [0002]

The present invention relates to a system for transferring fluids.

In modern automotive engine systems, the need for low cost, direct injection is increasing. In common rail injection systems, fuel is transported from the fuel tank to the fuel rail by a high-pressure pump, which serves as a storage reservoir for the fuel. The fuel is under high pressure in the fuel rail (or common rail) and can be injected directly into the cylinders through the injection valves connected to the rail.

It is desirable to provide a system for cost-effective delivery of fluids.

According to one aspect of the invention, the system for delivering fluids comprises a high pressure pump. The high-pressure pump includes a pump body. The high-pressure pump further includes a piston. The piston is axially movable within the pump body and includes a first portion and a second portion. The first portion is arranged in the pump body and the second portion is arranged outside the pump body. The pump body is coupled to the combustion engine such that the second portion of the piston extends into the combustion zone. The pump body includes one single fluid outlet.

The system further includes a fluid distributor connected directly to the pump body. The fluid dispenser includes a fluid inlet coupled to a fluid outlet of the pump. The dispenser is provided with the same number of fluid outlets as cylinders included in the combustion engine. The dispenser is designed to directly couple each fluid outlet to one cylinder of the combustion engine via a pipe.

The pump body is capable of coupling with a combustion engine, in particular a cylinder head or engine block of a combustion engine, and when the pump body is coupled with a combustion engine, the second part of the piston is axially As shown in Fig. The high-pressure pump is a plug-in pump. The high-pressure pump can be coupled directly to the engine block and can be mounted on the engine block.

According to further aspects, the piston is capable of coupling with the roller tappet. The roller tappet is capable of coupling with a balancer shaft or crank or cam of a combustion engine. The balancer shaft or crank or cam is arranged to move the roller tappet and piston. The roller tappet is in direct contact with the opening of the engine block. The roller tappet slides over the walls of the opening. At the opening in the engine block, it ensures axial movement of the roller tappet.

Since the pump body is provided primarily for guiding the fluid, not for guiding the piston, the high pressure pump is provided with less weight and is very compact. In addition, the pump is cost effective. By means of a high-pressure pump, direct coupling of the pump with the injector for the injection of fluid into the combustion chambers is possible.

There is no hydraulically arranged common rail between the injectors and the pump. The pump is designed such that each jetting device includes its own fluid delivery path from the pump to the jetting device. On the outside of the pump, the injectors are hydraulically independent from one another.

According to a further aspect of the present invention, a fluid distributor encloses one single fluid inlet and two or three fluid outlets. Each of the fluid inlet and fluid outlets are hydraulically coupled to each other.

According to further aspects, the pump includes a pressure sensor coupled with a fluid distributor for determining the value of the fluid pressure at the fluid outlets. Accordingly, the pump is precisely arranged to provide the value given for the pressure for the injection devices.

According to further aspects of the invention, the pump is coupled upstream by an electrically driven pump. For example, an electrically driven pump is an in-tank pump arranged inside a fluid tank. For example, the system does not include additional internal transfer pumps.

This system is a low-cost, low-weight, compact pump system. There is no need for a common rail between the high-pressure pump and the injectors. The injectors are fed directly by the pump. The pump is designed such that each jetting device includes its own fluid delivery path from the pump to the jetting device. Outside the pump, the injectors are independent of the hydraulic pressure from each other. Because the high-pressure pump and the fluid distributor are separate parts, one layout of the pump can be composed of different types of combustion engines due to the fluid distributor.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments, examples of which are illustrated in the accompanying drawings. The same elements, elements of the same type, and elements having the same effect may be provided with the same reference numerals in the drawings.

Figures 1A and 1B schematically illustrate a system for transferring fluids according to one embodiment.
Figure 2 schematically illustrates a system for delivery of fluid according to one embodiment.

1A and 1B schematically illustrate a system for fluid transfer with a high-pressure pump 100 according to one embodiment.

The high-pressure pump 100 includes a pump body 101 surrounding openings for guiding the fluid. The pump body 101 includes a fluid inlet 112. The fluid inlet is capable of coupling with an electric pump. The electric pump supplies the fluid to the inlet 112 of the pump body 101. The digital inlet valve 130 is coupled to the pump body 101.

The piston 102 is axially movable with respect to the pump body 101 within the piston chamber 111. Fluid is sucked into the pump body 101 through the inlet 112 and discharged through the fluid outlet 122 due to the movement of the piston 102 relative to the pump body 101.

The piston includes a first portion (103) arranged in the pump body (101). The first portion 103 is at least partially in contact with the fluid during operation of the pump 100. The piston 102 includes a second portion 104 arranged on the outer side of the pump body 101.

The second portion 104 is coupled to the roller tappet 117. The roller tappet 117 is coupled to the drive shaft 127 of the combustion engine. The drive shaft 127 may be a cam or crank or balancer shaft for axial movement of the roller tappet 117 and the piston 102 relative to the pump body 101.

The pump body 101 is coupled to the engine block 129 of the combustion engine. The engine block 129 surrounds the opening 128. The second portion 104 of the piston 102 and the roller tappet 117 are arranged in the opening 128. The roller tappet 117 is in direct contact with the engine block 129. The roller tappet 117 and the drive shaft 127 are lubricated with engine oil.

The pump 100 includes one single fluid outlet 122 directly connected to the fluid distributor 123. Fluid distributor 123 includes one fluid inlet 124. Fluid distributor 123 includes the same number of fluid outlets 105, 106, 107 as the combustion engine includes cylinders. For example, the fluid dispenser 123 includes one outlet 105. According to further aspects, the fluid dispenser 123 includes two fluid outlets 105, 106. According to further aspects, the fluid dispenser 123 includes three fluid outlets 105, 106, According to further aspects, the fluid dispenser 123 includes more than three fluid outlets 105, 106, 107, e.g., four or more fluid outlets.

Each fluid outlet 105, 106, 107 is connectable to a pipe. Each pipe is coupled with an injector. The pump 100 delivers the fluid to the injectors through the fluid distributor 123. The injectors are arranged to inject fluid into the combustion chambers of the combustion engine.

The injectors of one of the injectors are each arranged in one combustion chamber. There is no common rail between the fluid distributor 123 and the injectors. Each of the injectors is coupled directly to the fluid distributor 123 through the pipes.

The fluid dispenser 123 is screwed directly onto the pump housing 101 by a coupling nut 126. The coupling connector 125 hydraulically connects the fluid distributor 123 and the pump housing 101. The pressure sensor 116 is arranged in a fluid distributor 123 for determining the value of the fluid pressure at the fluid outlets 105, 106,

Each fluid outlet 105, 106, 107 is connected to a pipe as illustratively shown for the three outlets in Fig. Each pipe 108, 109, 110 is coupled with an injector 113, 114, 115. The pump 100 delivers the fluid to the injectors 113, 114 and 115. The injectors are arranged to inject fluid into the combustion chamber of the combustion engine. In the example of Figure 2, the combustion engine comprises three combustion chambers.

One of the injectors 113, 114, and 115 is individually arranged in one combustion chamber. There is no common rail between the pump 100 and the injectors 113, 114 and 115. Each of the injectors 113, 114 and 115 is directly coupled to the pump 100 via pipes 108, 109 and 110.

According to further aspects, the pump 100 includes a volume control valve for controlling the volume of fluid delivered to the combustion engine.

The pump 100 is installed directly in the engine block 129. The roller tappet 117 slides over the walls of the engine block 129 at the opening 128. The opening 128 ensures axial movement of the roller tappet 117. This provides a lighter and more compact system for transporting fluids. Because there is no need for common rail, this system is cost effective. The internal delivery pump can be replaced by an in-tank pump that is hydraulically coupled to the inlet 112 of the pump body 101.

According to a further aspect, the pump 100 includes a volume control valve for controlling the volume of fluid delivered to the combustion engine.

The pump 100 is installed directly in the engine block 129. The roller tappet 117 slides over the walls of the engine block 129 at the opening 128. The opening 128 ensures axial movement of the roller tappet 117. Thereby, a lighter and more compact system for transporting fluids is provided. Since there is no need for a common rail, the system is cost effective. The internal delivery pump can be replaced by an in-tank pump that is hydraulically coupled to the inlet 112 of the pump body 101. The high pressure pump 100 and the dispenser 123 form an inseparable assembly in ready for use. The high pressure pump 100 is directly integrated into the fluid distributor 123, so that the high pressure pipeline connecting the pump and the distributor can be omitted.

Claims

A system for fluid delivery,
A pump body 101, and
A piston 102 movable in an axial direction within the pump body 101 and having a first portion 103 arranged in the pump body 101 and a second portion 103 arranged outside the pump body 101, (100) including a portion (104), wherein the piston-pump body (101) is not provided for guiding the piston (102)
The pump body 101 can be coupled with a combustion engine such that the second portion 104 of the piston 102 extends into the combustion engine,
The pump body 101 comprises a single fluid outlet 122,
And a fluid dispenser 123 connected directly to the pump body 101. The fluid dispenser includes a fluid inlet 124 which is connected to a fluid outlet 122 of the pump 100, And the distributor 123 is further provided with the same number of fluid outlets 105, 106 and 107 as the cylinders included in the combustion engine,
The distributor 123 is designed to directly couple the respective fluid outlets 105, 106, 107 with the injector for each cylinder of the combustion engine via pipes 108, 109,
Fluid transport system.

The method according to claim 1,
And a coupling nut (125) and a coupling nut (126) for connecting the distributor (123) and the pump body (101)
Fluid transport system.

3. The method according to claim 1 or 2,
The pump body 101 and the distributor 123 are separate components,
Fluid transport system.

The method according to claim 1,
And a pressure sensor (116) coupled to a dispenser (123) for determining the value of the fluid pressure at the fluid outlets (105, 106, 107)
Fluid transport system.