CN207526600U

CN207526600U - A kind of position model electronic control dispensing pump

Info

Publication number: CN207526600U
Application number: CN201721202902.9U
Authority: CN
Inventors: 龚松青; 张振廷
Original assignee: Nanjing Weifu Jinning Coltd
Current assignee: Nanjing Weifu Jinning Coltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2018-06-22
Anticipated expiration: 2027-09-18

Abstract

The utility model discloses a kind of position model electronic control dispensing pumps, including engine, injection pump, the first control module, the second control module, fuel temperature sensor, fuel-flow control module, timing solenoid valve, into solenoid, oil mass slip ring position sensor and timing stroke sensor, wherein, the first control module setting is on the engine, the signal input part of first control module is connect with engine speed electric signal and vehicle signal, the signal input part connection of signal output end and the second control module；Second control module is arranged on injection pump, its signal input part is connect with the fuel temperature sensor, oil mass slip ring position sensor and timing stroke sensor, fuel-flow control module, timing solenoid valve on the signal output end and injection pump of the second control module and is connected into solenoid.

Description

A kind of position model electronic control dispensing pump

Technical field

The utility model is related to position model electronic control dispensing pumps.

Background technology

With the propulsion of national energy-saving emission reduction regulation, the kernel component fuel system as diesel engine also exists always Upgrading, such as the application of electric control fuel system on a diesel engine are more and more extensive.Electronic control dispensing pump fuel system is a kind of at present The electric control fuel system scheme of diesel emission upgrading is solved, formula electronic control dispensing pump system, core are mainly controlled by position It is position model electronic control dispensing pump and engine control module（ECU）And fuel injector.But existing position model electric control fuel system exists There are some risks on homogeneity of product and system reliability, especially in the application ring harsh to reliability requirement such as non-rice habitats Border.

Existing position model electronic control dispensing pump is mainly by distributive value regulating mechanism, injection timing regulating mechanism, pump oil component With distribution member（Plunger）Deng composition, it forms electronic control dispensing pump fuel system with ECU, fuel injector and related sensor.With The upgrading of emission regulation, it is higher and higher to the conformity of production requirement of injection pump.And traditional position model electronic control dispensing pump due to The scattered error of component of machine processing can not ensure the consistency of oil mass under every speed.In addition to this, due to ECU and automatically controlled point With being connected between pump by the engine of relatively long distance or overall wire sheaves, the connector on these harness often goes out in actual use The integrity problem that existing loose contact or circuit are burnt.

Position model electronic control dispensing pump is mainly used on diesel engine, it and control unit of engine（ECU）, fuel injector form Fuel system is responsible for diesel oil from low pressure oil way sucking, and in due course, suitable is ejected into combustion chambers burn.It is existing domestic and international Solution：The position model electronic control dispensing pump of Wei Fujinning companies including Bosch, Jack Sai Er and the country, the solution party provided Case is all the upper integrated electronic fuel-flow control module of pump, by the sliding sleeve on the module drive plunger, so as to control the size of distributive value.

There are most important deficiency it is since the scattered error of machine-building and electric parts is asked in current electric control fuel system Topic causes distributive value of each pump in similary rotating speed, similary slip ring position that cannot be consistent, so as to cause engine power The scattered error of torque can not increasingly meet the national legislation being gradually increased to discharging the requirement with homogeneity of product.For example, work as Under some operating mode, fuel system prepares the oil mass of injection 10cc.Because distributive value is related to rotating speed, oil mass slip ring position, ECU will Drive position of the oil mass actuator turns on injection pump to 23%.But the problem of crucial, is, the position model oil spout of each manufacture Pump the scattered error processed due to component of machine, same rotating speed between different injection pumps, the distributive value on oil mass slip ring position not phase Together, for example, it is corresponding at 23% position be 10 ± 1cc.

In existing position model electronic control dispensing pump control system scheme, vehicle/complete machine, engine and oil spout pumping system phase The sensor signal of pass fully enters a unique control unit of engine（ECU）On, and vehicle/whole is carried out by the ECU The control of all actuators of different parts on machine.By taking distributive value controls as an example, its realizing route is introduced.ECU is according to receiving The signals such as engine, rotating speed calculate the distributive value of target；Then ECU goes out further according to the value computation of table lookup of rotating speed and distributive value Fuel-flow control is realized in the oil mass slip ring position of target finally by the oil regulator on driving injection pump.As shown in Figure 2.By In in actual use, to facilitate installation, ECU and injection pump are not complete use.So rotating speed SP, spray in Fig. 2 Relationship between oil mass Q and oil mass slip ring position S is to take the oil spout Pump data of intermediate state or average state, it is only a kind of flat Data in mean value meaning.Therefore when different ECU is matched from different injection pumps, it just will appear the inconsistent phenomenon of oil mass.

In addition, the stability problem of system.Due to having oil mass position signal, injection advance angle on position model electronic control dispensing pump Signal, oil mass actuator driven, timing solenoid-driven etc., signal is more, as ECU with injection pump apart from distant and intermediate Connector it is relatively more in the case of, in the presence of a harsh environment, especially the temperature such as non-rice habitats, vibration it is larger in the case of, easily Occur contacting undesirable situation between ECU and injection pump, cause the ill effects such as engine shutdown.

Utility model content

For above-mentioned technical problem, the utility model proposes a kind of position model electronic control dispensing pumps, can solve pump oil amount, carry Anterior angle consistency problem and the probability for greatly reducing failure on harness improve the reliability of system.

In order to realize above-mentioned technical purpose, the utility model is using following specific technical solution：

A kind of position model electronic control dispensing pump, including engine, injection pump, the first control module, the second control module, fuel oil Temperature sensor, fuel-flow control module, timing solenoid valve, into solenoid, oil mass slip ring position sensor and timing stroke Sensor, wherein,

The first control module packet is set on the engine, the signal input part and engine speed of the first control module The signal input part connection of electric signal and the connection of vehicle signal, signal output end and the second control module；

The fuel temperature sensor is arranged on injection pump, for detecting the fuel oil temperature signal value on injection pump；

The oil mass slip ring position sensor obtains oil mass slip ring position feed back signal for detecting；

The timing stroke sensor, for detecting and obtaining the timing travel feedback signal of injection advance Angle Position；

Second control module is arranged on injection pump, signal input part and the fuel temperature sensor, oil mass Slip ring position sensor and timing stroke sensor connect, the oil mass on the signal output end and injection pump of the second control module Adjustment module, timing solenoid valve and into solenoid connect.

First control module is ECU, the second control module is PCU, between the ECU and PCU by CAN bus into Row communication；PCU is directly placed in the fuel-flow control module of injection pump, and is sensed with the oil mass position feedback of fuel-flow control module Device and temperature sensor are integrated in one, are cooled down by the fuel oil in injection pump.

Covered with three proofings gel coating outside the PCU.

The beneficial effects of the utility model are：

The utility model has the advantages that following relative to existing position model electronic control dispensing pump：

Firstth, due to intelligent object（PCU）On injection pump, and contain memory in intelligent object, so each Platform injection pump can there are ECU is supplied to read on the pump oneself personalized oil mass, injection advance angular data.So as to solve Pump oil amount, advance angle consistency problem.

Secondth, since intelligent object is on injection pump, it can directly be connected directly with the electric component on pump, with ECU Between circuit there was only power supply and connection, greatly reduce the probability of failure on harness, improve the reliability of system.

Description of the drawings

Fig. 1 is the system functional block diagram of the utility model position model electronic control dispensing pump；

Fig. 2 is the oil mass realizing route figure of the utility model position model electronic control dispensing pump；

Fig. 3 is the utility model position model electronic control dispensing pump system control scheme schematic diagram；

Fig. 4 adjusts procedure chart for distributive value；

Fig. 5 adjusts procedure chart for injection advance angle.

Specific embodiment

With reference to the accompanying drawings of the specification and specific embodiment to the utility model a kind of skill of position model electronic control dispensing pump Art scheme is described in further detail.

Every when pumping out factory, the basic oil mass MAP of oil mass, rotating speed, fuel oil temperature and oil spout magnitude relation is solidificated in PCU As its dedicated oil mass basis MAP.Because carrying memory on PCU, so all there are one dedicated oil masses for each injection pump Basic MAP (i.e. distributive value Q, rotating speed SP, fuel oil temperature T and oil mass slip ring position S relation table) can have PCU on pump On.In this case, the realizing route of system distributive value is as shown in Figure 2.

As shown in Figure 1, the utility model discloses a kind of position model electronic control dispensing pump, including engine, injection pump, first Control module, the second control module, fuel temperature sensor, fuel-flow control module, timing solenoid valve, into solenoid, oil mass Slip ring position sensor and timing stroke sensor, wherein,

Further, as the preferred embodiment of Tthe utility model system, first control module is ECU, the second control Module is PCU, is communicated between the ECU and PCU by CAN bus；PCU is directly placed at the fuel-flow control mould of injection pump In block, and one is integrated in the oil mass position feedback transducer and temperature sensor of fuel-flow control module, by injection pump Fuel oil cooled down.

Further, it as the preferred embodiment of Tthe utility model system, in order to which PCU is enable to immerse in the oil, needs to make Chip surface is covered with three proofings glue, prevents electronic component from being corroded by diesel oil, aqueous mixtures.

Separately in order to enhance the reliability of system and convenience, PCU is with pumping the rat tail of upper sensor, actuator as possible It is short, and connected using independent connector；The interface of PCU and ECU is connected using additional connector.

Troubleshooting and fault message feedback on injection pump：

Sensor, actuator failures on injection pump are divided into two-stage according to hazard rating, and one kind is catastrophe failure, will be caused Engine mounted longitudinally racing；Another kind is conventional fault.When conventional fault occur in the sensor on pump or actuator, PCU is relevant Fault message is timely feedbacked by bus to ECU in the form of error code.When there is catastrophe failure, PCU will directly control pass It closes into solenoid and sends fault message simultaneously to ECU.

The method of work of the utility model position model electronic control dispensing pump is：

Step S1, described first control module acquisition present engine rotating speed electric signal and vehicle signal calculate Target oil spout magnitude, the injection advance angle value of target, the expectation state signal value of the enterprising solenoid of injection pump and engine turn Fast signal value, and the aforementioned four signal value calculated is transferred to the second control module；

Step S2, the second control module is dynamic according to following three of the aforementioned four signal value progress that the first control module transmits Make, be respectively：

Distributive value is adjusted：Engine rotational speed signal value that second control module is transmitted according to the first control module, target spray Oil mass value and combination calculate the oil mass slip ring of target received from the temperature signal that fuel temperature sensor on injection pump acquires Position, then by the target oil mass slip ring position of above-mentioned gained and received from the oil mass slip ring position sensor signal one on injection pump It rises, calculates suitable driving current, drive the oil regulator on injection pump, oil regulator is made to reach the oil of target Measure slip ring position；

Injection advance angle is adjusted：The target injection advance angle signal that second control module is transmitted according to the first control module, With reference to received from the timing stroke sensor signal on injection pump, suitable driving current is calculated, drives timing electromagnetism Valve makes injection advance angle reach target location；

Oil inlet solenoid valve control：The enterprising electromagnetic oil of injection pump that the reception of second control module is transmitted from the first control module The enterprising solenoid of injection pump is driven to open or close after the expectation state signal value of valve.

In step S1, the vehicle signal includes：Accelerator pedal signal, admission pressure temperature signal, engine coolant Temperature signal, speed signal, key switch signal and brake switch signal.

In step S2, pid control algorithm is used when driving the oil regulator on injection pump.

In step S2, driving timing solenoid valve carries out using pid control algorithm during oil spout.

Claims

1. a kind of position model electronic control dispensing pump, which is characterized in that including engine, injection pump, the first control module, the second control Module, fuel temperature sensor, fuel-flow control module, timing solenoid valve, into solenoid, oil mass slip ring position sensor and Timing stroke sensor, wherein,

On the engine, the signal input part of the first control module is electrically believed with engine speed for the first control module setting Number and the connection of vehicle signal, the signal input part connection of signal output end and the second control module；

Second control module is arranged on injection pump, signal input part and the fuel temperature sensor, oil mass slip ring Position sensor and timing stroke sensor connect, the fuel-flow control on the signal output end and injection pump of the second control module Module, timing solenoid valve and into solenoid connect.

2. position model electronic control dispensing pump according to claim 1, which is characterized in that first control module is ECU, the Two control modules are PCU, are communicated between the ECU and PCU by CAN bus；PCU is directly placed at the oil mass of injection pump In adjustment module, and one is integrated in the oil mass position feedback transducer and temperature sensor of fuel-flow control module, passes through spray Fuel oil in oil pump is cooled down.

3. position model electronic control dispensing pump according to claim 2, which is characterized in that covered with three proofings glue outside the PCU Coating.