CN103216369A - Fuel pump with integrated pressure sensor - Google Patents
Fuel pump with integrated pressure sensor Download PDFInfo
- Publication number
- CN103216369A CN103216369A CN2013100186523A CN201310018652A CN103216369A CN 103216369 A CN103216369 A CN 103216369A CN 2013100186523 A CN2013100186523 A CN 2013100186523A CN 201310018652 A CN201310018652 A CN 201310018652A CN 103216369 A CN103216369 A CN 103216369A
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- China
- Prior art keywords
- fuel
- petrolift
- pressure
- valve retainer
- delivery valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Disclosed is a fuel pump with an integrated pressure sensor. The fuel pump includes a pump body. The pump body includes a first pump drive end and a second fuel delivery end. The fuel pump has at least one fuel inlet positioned by a neighbor first pump drive end. The fuel pump is characterized in that: a delivery valve holder (18) is mounted on the fuel delivery end, and the pressure sensor is integrated in the delivery valve holder.
Description
Technical field
The present invention relates to a kind of petrolift with integrated pressure transducer.
Background technique
Common rail fuel injection system is one of the fuel injection system of the present advanced person who uses in modern diesel engines.The major advantage of common rail fuel injection system is: it can change the sequential and the endurance of spraying in wide scope.This realizes by pressure is produced with the fuel injection of separation.The member of common rail fuel injection system can be divided into two main classifications.The first category of member is a classification from the fuel supply operation to the low voltage side of system that carry out, and second classification comprises the high pressure member.
The first category of member comprises from the member of fuel pot to the petrolift fueling.The high pressure side of common rail system comprises high-pressure service pump, and described high-pressure service pump increases to system pressure with the pressure of fuel.Fuel under high pressure is flowed through high-voltage tube and is collected in the fuel rail.Described rail is connected to sparger by high-voltage tube again.When the nozzle of sparger is opened, in the cylinder of the injected motivation of setting out of fuel.The pump action of high-pressure service pump, sparger start sequential and are controlled by electronic control unit.Various sensors are used to carry out far-ranging control operation, with the performance that obtains.Sensor provides important system information, calculates suitable injection sequential and endurance being used to.
In system, use different sensors to guarantee the proper functioning of common rail fuel injection system.One of them is rail pressure sensor (RPS).As its name suggests, the rail pressure sensor is installed on the rail usually, to measure and to monitor the pressure of the fuel in the rail.In being total to the rail accumulator injection system, the pressure in the rail pressure sensor measurement fuel rail.Sensing element in the sensor is a Steel Diaphragm, the distortion resistor with the form vapor deposition of bridge circuit to described Steel Diaphragm.When pressure was applied on the surface of diaphragm, the resistance of bridge resistance device was owing to diaphragm deformation changes.
Because the rail pressure sensor is designed to snugly be assembled in the fuel rail of common rail fuel injection system, so the rail pressure sensor is assembled on the fuel rail routinely.The problem that the rail pressure sensor groups is installed on the rail is: machining and assembly manipulation are vital.In the machining and assembly manipulation of rail pressure sensor, even small error also can cause the variation of pressure in the rail.The variation of pressure can cause the interference to the spraying cycle of motor in the rail.Because this key property of positioning rail pressure transducer on rail, machining and assembly manipulation are very expensive and time-consuming.
Under the situation of the low-cost automobile in modern times, its main purpose is to reduce the cost of automobile, and the mounting rail pressure transducer can be crossed the highland on rail increases cost, because of rather than feasible selection.And, to use than small capacity, for example in the automobile of the motor of a cylinder or two cylinders, the use of rail itself has increased the cost of automobile.Yet, fuel pressure measurement of force and the monitoring that is sent to fuel injector is absolutely necessary again.
Summary of the invention
The objective of the invention is to overcome the narrow limitation of the conventional method of positioning rail pressure transducer.
It below is the advantage of the present invention described in independent claims.Pressure transducer is integrated in the petrolift makes and no longer need accumulator/rail that this has reduced the cost of the fuel injection system in the automobile.Pressure transducer still continues to measure and monitor the pressure of the fuel that is sent to fuel injector.This has guaranteed not reduce in the function aspects of pressure transducer and fuel injection system.
Description of drawings
Different mode of execution of the present invention quilt in the embodiment part is at length open, and is illustrated in the accompanying drawings:
Fig. 1 shows the schematic diagram according to petrolift of the present invention;
Fig. 2 a shows the detailed schematic representation according to the delivery valve retainer of petrolift of the present invention; And
Fig. 2 b shows the sectional view according to the delivery valve retainer of petrolift of the present invention.
Embodiment
Fig. 1 shows the schematic diagram of the petrolift 10 that uses in fuel injection system.Petrolift 10 comprises the pump housing 12, and the described pump housing 12 comprises the first pump drive end 14 and the second fuel delivery end 16.Petrolift 10 comprises at least one import, the first pump drive end, 14 location of the contiguous petrolift 10 of described import.Delivery valve retainer 18 is installed in fuel delivery end 16 places, and pressure transducer 20 is integrated in the delivery valve retainer 18.Pressurized fuel is sent to fuel injector 22 from petrolift 10 by high-pressure fuel line 24.
Fig. 2 a shows the detailed schematic representation according to the delivery valve retainer of petrolift of the present invention.Delivery valve retainer 18 has an import 26 and two outlets 28.The import 26 of described delivery valve retainer 18 and two outlet 28 outer surfaces along them have screw thread.The screw thread that is positioned on the outer surface of import 26 makes delivery valve retainer 18 be fixed to the fuel pump housing 12 at fuel delivery end place securely.Shown in Fig. 2 b, the axis along alphabetical Y representative in import 26 is provided with axial bore 30, and the axis along alphabetical X representative in outlet 28 is provided with axial bore 32.
The working procedure of petrolift 10 with integrated pressure transducer 20 is soluble as follows.The fuel that petrolift 10 receives from fuel pot with certain pressure.Petrolift comprises piston, and described piston is cam follower normally.Piston is to-and-fro motion in the pump housing, thereby has increased the pressure that receives the fuel that comes from fuel pot.Pressurized fuel is sent to the second fuel delivery end 16.Pressurized fuel enters axial bore 30 import 26 that is located at delivery valve retainer 18 from fuel delivery end 16.Pressurized fuel flows to the axial bore 32 of the outlet 28 that is arranged in delivery valve retainer 18 then from axial bore 30.Integrated pressure transducer 20 is measured the pressure of fuel.Pressure-dependent information is sent to electronic control unit.If the pressure of fuel is enough high, then the high-pressure fuel line of this fuel under high pressure by as shown in Figure 1 is sent to sparger.
A most important aspect according to petrolift 10 of the present invention is that described petrolift 10 can be used in the automobile of less engine capacity effectively.In addition, in the automobile of the fuel system that requires less pressure sensitivity, also can use petrolift effectively with integrated pressure transducer.Pressure transducer 20 is integrated in another advantage of the petrolift in the delivery valve retainer and is according to the present invention: reduced the number of the member that uses in fuel injection system, thereby reduced the cost of whole system.Another advantage that pressure transducer is integrated into petrolift is: compare with mounting rail pressure transducer on rail, it is more shirtsleeve operation that pressure transducer is integrated into petrolift.
Should be understood that the embodiment of Xie Shiing only is exemplary in the above description, and does not limit the scope of the invention.Described scope is only limited by the scope of claim.The relevant many modifications that pressure transducer are integrated into the measure of petrolift all are susceptible to and belong to scope of the present invention.
Claims (6)
1. a petrolift (10) comprising:
(i) pump housing (12), it comprises the first pump drive end (14) and the second fuel delivery end (16);
(ii) at least one fuel inlet, its contiguous described first pump drive end (14) location;
It is characterized in that:
-delivery valve retainer (18) is installed in described fuel delivery end (16) and locates; And
-pressure transducer (20) is integrated in the described delivery valve retainer (18).
2. petrolift as claimed in claim 1 (10) is characterized in that, described delivery valve retainer (18) has import (26) and axial bore (30), and described axial bore (30) is suitable for receiving the pressurized fuel from fuel delivery end (16).
3. petrolift as claimed in claim 1 (10) is characterized in that, described delivery valve retainer (18) has at least one outlet (28) and axial bore (32), and described axial bore (32) is suitable for fuel under high pressure is transported at least one sparger.
4. petrolift as claimed in claim 1 (10), it is characterized in that described pressure transducer (20) is integrated in the described delivery valve retainer (18) and makes described pressure transducer (20) can measure the pressure of the fuel in the described axial bore (32).
5. petrolift as claimed in claim 1 (10) is characterized in that, plug-in housing (34) is installed in that place, end away from the end of the second fuel delivery end (16) that petrolift (10) is installed on the delivery valve retainer (18).
6. petrolift as claimed in claim 5 (10) is characterized in that, plug-in housing (34) comprises and is suitable for making the device that communicates between described pressure transducer (20) and the electronic control unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN214/CHE/2012 | 2012-01-19 | ||
| IN214CH2012 | 2012-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216369A true CN103216369A (en) | 2013-07-24 |
Family
ID=48814453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100186523A Pending CN103216369A (en) | 2012-01-19 | 2013-01-18 | Fuel pump with integrated pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461105A (en) * | 2014-05-08 | 2017-02-22 | 罗伯特·博世有限公司 | Valve arrangement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4227893A1 (en) * | 1991-10-18 | 1993-04-22 | Bosch Gmbh Robert | Differential pressure sensor e.g. for vehicle fuel tank - contains two semiconducting membranes with sensor elements on upper sides in common reference chamber, lower sides exposed to different pressures |
| US20030221675A1 (en) * | 2002-05-29 | 2003-12-04 | John Washeleski | Vehicle fuel management system |
| CN1487188A (en) * | 2002-10-02 | 2004-04-07 | ������������ʽ���� | Fuel pump assembly and internal pressure sensor in fuel oil tank for vehicle |
| CN101080571A (en) * | 2004-12-28 | 2007-11-28 | 罗伯特·博世有限公司 | Piston pump in particular a high-pressure fuel pump for an internal combustion engine on a motor vehicle |
| CN101868610A (en) * | 2007-11-19 | 2010-10-20 | 罗伯特·博世有限公司 | Fuel liquid and vapor pressure sensor |
-
2013
- 2013-01-18 CN CN2013100186523A patent/CN103216369A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4227893A1 (en) * | 1991-10-18 | 1993-04-22 | Bosch Gmbh Robert | Differential pressure sensor e.g. for vehicle fuel tank - contains two semiconducting membranes with sensor elements on upper sides in common reference chamber, lower sides exposed to different pressures |
| US20030221675A1 (en) * | 2002-05-29 | 2003-12-04 | John Washeleski | Vehicle fuel management system |
| CN1487188A (en) * | 2002-10-02 | 2004-04-07 | ������������ʽ���� | Fuel pump assembly and internal pressure sensor in fuel oil tank for vehicle |
| CN101080571A (en) * | 2004-12-28 | 2007-11-28 | 罗伯特·博世有限公司 | Piston pump in particular a high-pressure fuel pump for an internal combustion engine on a motor vehicle |
| CN101868610A (en) * | 2007-11-19 | 2010-10-20 | 罗伯特·博世有限公司 | Fuel liquid and vapor pressure sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461105A (en) * | 2014-05-08 | 2017-02-22 | 罗伯特·博世有限公司 | Valve arrangement |
| CN106461105B (en) * | 2014-05-08 | 2019-09-17 | 罗伯特·博世有限公司 | Valve module |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |