CN109236452A - Control engine coolant fluid temperature (F.T.) - Google Patents

Abstract

Disclose the example of the technology of the temperature of the coolant fluid of the inlet for controlling internal combustion engine.In one exemplary embodiment, a kind of method includes: that the total burning fuel data for indicating the total amount by the fuel of combustion in IC engine are received by processing unit.Method further comprises: the engine speed data of the engine speed of instruction internal combustion engine is received by processing unit.Method further comprises: being based at least partially on total burning fuel data and engine speed data by processing unit to calculate radiator flow velocity, to obtain the temperature set-point of the inlet of engine.Method further comprises: being based at least partially on radiator flow velocity by processing unit to adjust radiator flow.

Description

Control engine coolant fluid temperature (F.T.)

Introduction

The disclosure relates generally to internal combustion engines, and relate more specifically to control the coolant fluid of the inlet of internal combustion engine Temperature.

Such as the vehicle of the automobile of car, motorcycle or any other type can be equipped with internal combustion engine, to be vehicle Provide power source.Power from engine may include that machine power (enabling the vehicle to move) and electric power (make in vehicle Electronic system, pump etc. can work).When the engine operates, engine and its associated components generate heat, if be allowed to Unsight words, this can damage engine and its associated components.

In order to reduce in-engine heat, it is logical that coolant system makes coolant fluid cycle through in-engine cooling Road.Coolant fluid absorbs heat from engine, and when coolant fluid pumps out from engine and enters radiator, leads to The heat exchange crossed in radiator is cooled.Correspondingly, coolant fluid turns cold, and is then recycled back into through engine, with cooling Engine and its associated components.

Summary of the invention

In one exemplary embodiment, based on a kind of temperature by controlling the coolant fluid of the inlet of internal combustion engine Calculation machine implementation method includes: that the total burning fuel number for indicating the total amount by the fuel of combustion in IC engine is received by processing unit According to.This method further includes the engine speed data that the engine speed of instruction internal combustion engine is received by processing unit.This method into One step includes that total burning fuel data and engine speed data are based at least partially on by processing unit to calculate radiator Flow velocity, to obtain the temperature set-point of engine inlet.This method further include be based at least partially on by processing unit it is scattered Hot device flow velocity adjusts radiator flow.

In some embodiments, adjusting radiator flow further includes the flow and reduction for increasing coolant fluid to radiator The flow that coolant fluid passes through radiator bypass.In some embodiments, adjusting radiator flow further includes reducing coolant Fluid to radiator flow and increase flow of the coolant fluid by radiator bypass.In some embodiments, it adjusts cold But the radiator flow of agent fluid further includes control valve, to adjust the radiator flow of coolant fluid.In some embodiments In, radiator flow velocity, which is calculated, with the temperature set-point for obtaining the inlet of engine is also based at least partially on radiator temperature. In some embodiments, it calculates radiator flow velocity and is also based at least partially on engine export temperature.In some embodiments, it counts It calculates radiator flow velocity and is also based at least partially on environmental pressure.

In another exemplary embodiment, the system for controlling the temperature of the coolant fluid of the inlet of internal combustion engine It include: the memory comprising computer-readable instruction, and the processing unit for executing computer-readable instruction, the computer Readable instruction is used for implementation method.In this example, method includes that instruction is received by processing unit by the fuel of combustion in IC engine Total amount total burning fuel data.This method further includes that starting for the engine speed for indicating internal combustion engine is received by processing unit Machine rotary speed data.This method further comprises that total burning fuel data and engine turn are based at least partially on by processing unit Fast data calculate radiator flow velocity, to obtain the temperature set-point of engine inlet.This method further includes being filled by processing It sets and is based at least partially on radiator flow velocity to adjust radiator flow.

In some embodiments, adjusting radiator flow further includes increasing coolant fluid to the flow of radiator and subtracting Few flow of the coolant fluid by radiator bypass.In some embodiments, adjusting radiator flow further includes reducing cooling Agent fluid to radiator flow and increase flow of the coolant fluid by radiator bypass.In some embodiments, it adjusts The radiator flow for saving coolant fluid further includes control valve, to adjust the radiator flow of coolant fluid.In some realities It applies in example, calculates radiator flow velocity and be also based at least partially on radiator temperature.In some embodiments, radiator flow velocity is calculated Also it is based at least partially on engine export temperature.In some embodiments, radiator flow velocity is calculated also to be based at least partially on Environmental pressure.

In yet another exemplary embodiment, for controlling the computer of the temperature of the coolant fluid of the inlet of internal combustion engine Program product includes: the computer readable storage medium with the program instruction with its realization, wherein computer-readable storage medium Matter is not temporary signal, which can be executed by processing unit so that processing unit implementation method.In this example, side Method includes total burning fuel data of the total amount for the fuel that instruction is received by processing unit by combustion in IC engine.This method is also wrapped Include the engine speed data that the engine speed of instruction internal combustion engine is received by processing unit.This method further comprises passing through place Reason device is based at least partially on total burning fuel data and engine speed data to calculate radiator flow velocity, to be started The temperature set-point of machine inlet.This method further includes that radiator flow velocity is based at least partially on by processing unit is scattered to adjust Hot device flow.

In some embodiments, adjusting radiator flow further includes increasing coolant fluid to the flow of radiator and subtracting Few flow of the coolant fluid by radiator bypass.In some embodiments, adjusting radiator flow further includes reducing cooling Agent fluid to radiator flow and increase flow of the coolant fluid by radiator bypass.In some embodiments, it adjusts The radiator flow for saving coolant fluid further includes control valve, to adjust the radiator flow of coolant fluid.In some realities It applies in example, calculates radiator flow velocity and be also based at least partially on radiator temperature, engine export temperature and environmental pressure.

In conjunction with attached drawing, according to described in detail below, the features above and advantage of the disclosure and other feature and advantage general It becomes apparent.

Detailed description of the invention

Other feature, advantages and details, which are only used as in example detailed description below, to be occurred, and detailed description refers to attached drawing, Wherein:

Fig. 1 shows vehicle motor according to an embodiment of the present disclosure comprising for controlling the inlet of internal combustion engine Coolant fluid temperature inlet temperature controller；

Fig. 2A, Fig. 2 B and Fig. 2 C show the curve graph of coolant boiling performance according to an embodiment of the present disclosure；

Fig. 3 shows according to an embodiment of the present disclosure for controlling the temperature of the coolant fluid of the inlet of internal combustion engine Method flow chart；

Fig. 4 shows according to an embodiment of the present disclosure for controlling the temperature of the coolant fluid of the inlet of internal combustion engine Method flow chart；And

Fig. 5 shows the block diagram of the processing system according to an embodiment of the present disclosure for realizing technique described herein.

Specific embodiment

It is described below and is substantially merely exemplary, it is not intended to limit the disclosure, its application or purposes.It should be understood that It is that throughout the drawings, corresponding appended drawing reference indicates identical or corresponding part and feature.As it is used herein, term Module refers to may include specific integrated circuit (ASIC), the electronic circuit, processing for executing one or more softwares or firmware program Processing circuit, the combinational logic circuit of device (shared, dedicated or groups of) and memory, and/or described function is provided Other components appropriate.

Technical solution described herein provides the temperature of the coolant fluid of the inlet for controlling internal combustion engine.It is modern Engine becomes more efficiently in terms of burning fuel, this leads to the increase of the running temperature of engine.By controlling coolant The temperature of fluid can operate engine at as high temperature as possible, without the hardware integrity including engine.This will be mentioned High engine and fuel efficiency, while preventing engine failure.

This technology adjusts the coolant by radiator based on the coolant fluid temperature measured in engine inlet Fluid flow.Temperature control is based primarily upon the coolant fluid stream by radiator to the function as inlet temperature set point The management of amount.The target temperature of engine inlet changes according to engine working point, and engine working point is total burning combustion The function of material and engine speed.In order to compensate for the thermal power in the combustion chamber for being introduced into engine, inlet temperature controller is calculated Radiator flow velocity (that is, rate of the coolant flow from radiator) is to obtain the temperature set-point of engine inlet.Entrance Temperature controller calculates radiator flow according to total burning fuel and engine speed.Inlet temperature controller can also compensate for dissipating Hot device temperature, engine export temperature and environmental pressure etc..

Fig. 1 shows vehicle motor 100 according to an embodiment of the present disclosure comprising for controlling the entrance of internal combustion engine The inlet temperature controller 102 of the temperature of the coolant fluid at place；Vehicle motor 100 includes at least main coolant pump (" pump ") 104, engine cylinder body 110, engine cylinder cover 112, other engine components 114 (such as turbocharger, exhaust gas recirculator Deng), main rotary valve 130, engine oil heater 116, transmission oil heater 118 and radiator 120.Main rotary valve 130 Including with first entrance 141, second entrance 142 and the first valve 140 for exporting 143.Main rotary valve 130 further includes with entrance 151, the second valve 150 of first outlet 152 and second outlet 153.According to embodiment, all parts of vehicle motor 100 are such as It connects and arranges shown in Fig. 1, the solid line between component indicates fluidly connecting between component, and arrow indicates the flowing side of fluid To.

Main rotary valve 130 including the first valve 140 and the second valve 150 is controlled by inlet temperature controller 102.Specifically, Inlet temperature controller 102 can make the first valve 140 guidance flowing through from first entrance 141 and/or second entrance 142 Outlet 143 flow to engine motor oil heater 116 and transmission oil heater 118.Similarly, inlet temperature controller 102 can So that the guidance of the second valve 150 flows through first outlet 152 and second from engine cylinder body 110 and engine cylinder cover 112 Outlet 153 flows into radiator 120 and/or radiator bypass 122.

Coolant fluid is cooled down by radiator 120, and is pumped out from radiator 120 by pump 104, and engine cylinder is returned to Body 110, engine cylinder cover 112 and other component 114 (being referred to as engine " entrance ").The flowing of management outflow radiator 120 Cold coolant can be mixed with the coolant of heat, to provide the coolant at desired temperature to vehicle motor 100.

Inlet temperature controller 102 controls the temperature of the coolant fluid of internal combustion engine inlet.Enter to control engine Mouthful at temperature, inlet temperature controller 102 calculated based on total burning fuel and engine speed radiator flow velocity (that is, come From the rate of the coolant flow of radiator), to meet inlet temperature set point.This is the combustion chamber for introducing vehicle motor 100 In thermal power provide compensation.Inlet temperature controller can also compensate for radiator temperature, engine export temperature and environment Pressure etc..

Radiator flow velocity is the function of engine speed and total burning fuel, not have to overcome vehicle motor 100 Component limitation in the case where obtain vehicle motor 100 best combustion efficiency.For example, radiator flow velocity turns with engine The increase of fast and total burning fuel and increase.Radiator flow velocity is calculated, to maintain temperature set-point for vehicle motor 100.

Temperature set-point during the low power run condition of vehicle motor 100 is very close to vehicle motor 100 Hardware limitation.This is a feature of diesel engine, because diesel engine can be run at very high temperatures.But It is that the temperature set-point during high power operation condition is lower than the temperature set-point under the conditions of low power run.That is, being The hardware limitation for avoiding vehicle motor 100, when heat must be removed from vehicle motor 100, in high power operation item Temperature set-point during part is reduced from the temperature set-point under lower-wattage service condition.This can observe in fig. 2, Coolant boiling performance curve graph 200A according to the embodiment is shown.Particularly, curve graph 200A is indicated, in low-power It is acceptable for 110 degrees Celsius in operation, but the temperature may be increased to hardware limitation or more in high power operation.Curve Figure 200 A show the coolant pressure as unit of kPa to by DEG C as unit of coolant saturation temperature relational graph.Low During Power operation, radiator flow velocity is lower than flow velocity when high power operation.

It continues to refer to figure 1, inlet temperature controller 102 is it is also conceivable to radiator temperature information, engine export temperature Information and environmental pressure information.For example, by observation radiator temperature, inlet temperature controller 102 can compensate radiator 120 Cooling capacity.In view of the cooling capacity of radiator 120, which directly acts on the calibration of inlet temperature controller 102. For example, coolant fluid temperature is lower in radiator 120, inlet temperature controller 102 can make a response to cooling request It is slower.

Inlet temperature controller 102 can also compensate for the variation caused by ageing component (for example, injector, valve etc.).By It is nearby run in vehicle motor 100 close to critical-temperature (that is, temperature that component may break down), so relative to it There may be the changes of unexpected temperature for the component (for example, injector, valve etc.) of calibration under normal operation, drift or aging Change.This can be observed in fig. 2b, and coolant boiling performance curve graph 200B according to the embodiment is shown.Especially Ground, curve graph 200B is indicated, as components aging as a result, hardware limitation can achieve.Curve graph 200B is shown is with kPa The coolant pressure of unit to by DEG C as unit of coolant saturation temperature relational graph.This feature allows to reduce engineer and is setting The engineering nargin that must be taken into consideration when meter vehicle motor 100 and its cooling system.

In addition, continuing to refer to figure 1, inlet temperature controller 102 (can not shown by observing by ambient pressure sensor The ambient pressure data collected compensates environmental pressure out).This make it possible to according to the pressure oscillation caused by height above sea level come Adjust radiator flow velocity.Moreover, in this case, if operating vehicle on certain height above sea level and the environment at uncompensation height above sea level The operating temperature of pressure, vehicle motor 100 may be harmful to engine.This can be observed in fig. 2 c, wherein showing Coolant boiling performance curve graph 200C according to the embodiment is gone out.Particularly, curve graph 200C shows in higher height above sea level On, the pressure ratio of coolant system is low at sea level, and therefore needs to compensate.It is single that curve graph 200C, which is shown with kPa, Position coolant pressure to by DEG C as unit of coolant saturation temperature relational graph.This feature allows to reduce engineer and is designing The engineering nargin that must be taken into consideration when vehicle motor 100 and its cooling system.

It continues to refer to figure 1, in embodiment, inlet temperature controller 102 can be the combination of hardware and programming.Programming can To be stored in the processor-executable instruction in tangible memory, and hardware may include the place for executing those instructions Manage device.Therefore, system storage can store program instruction, which realizes when being executed by processing unit and retouch herein The function of stating.Also other engine/module/controllers can be used, to include other features described in other examples of this paper And function.Alternatively, or in addition, inlet temperature controller 102 may be implemented as specialized hardware, such as one or more collection At circuit, specific integrated circuit (ASIC), dedicated special processor (ASSP), field programmable gate array (FPGA) or any use In the combination of the aforementioned exemplary for the specialized hardware for executing technology described herein.

Fig. 3 shows the method according to the embodiment for controlling the temperature of the coolant fluid of the inlet of internal combustion engine 300 flow chart.Method 300 can for example by the inlet temperature controller of Fig. 1, by the processing system 500 of Fig. 5 (under Described in the text) or realized by another suitable processing system or equipment.

At frame 302, the total fuel data and indicate by vehicle motor that instruction is burnt by vehicle motor 100 are received The data of the engine speed of the vehicle of 100 operations.At frame 304, coolant inlet temperature set point is calculated (that is, being set as The temperature value of the preferred temperature of the coolant fluid of engine input).At frame 304, coolant inlet temperature set point root Reduce according to environmental pressure.At frame 306, inlet temperature set point is adjusted to compensate the error in tracking, such as by drift portion Error caused by part.

At frame 308, it is more than limitation that speed restrictor, which is applied to inlet temperature set point, to prevent radiator flow velocity.? At frame 310, calculated by using the current coolant fluid temperature of actual entry temperature set-point and engine input into Mouth temperature tracking error.At frame 312, using tracking error, by the nominal dynamic one group of calibration factor for determining controller It calculates radiator flow velocity, and at frame 314, receive outlet tank temperature and is applied to the coefficient of controller, with Determine the radiator flow velocity dynamic response using the compensation of actual radiator cooling capacity.

Then the second valve 150 of main rotary valve 130 is adjusted, to provide the radiator flow velocity calculated.For example, the second valve 150 First outlet 152 and second outlet 153 be opened/closed to obtain determining radiator flow velocity.As radiator flow velocity increases Add, first outlet valve 153 is opened to increase the flow for flowing through radiator 120.Meanwhile first outlet 152 can be closed to reduce Pass through the flow of radiator bypass 122.Similarly, as radiator flow velocity reduces, first outlet valve 153 is closed, to reduce stream Cross the flow of radiator 120.Meanwhile first outlet 152 can be opened, to increase the flow for passing through radiator bypass 122.

Fig. 4 shows the method according to the embodiment for controlling the temperature of the coolant fluid of the inlet of internal combustion engine 400 flow chart.Method 400 can for example by the inlet temperature controller of Fig. 1, by the processing system 500 of Fig. 5 (under Described in the text) or realized by another suitable processing system or equipment.

At frame 402, inlet temperature controller 102 receives instruction and is fired by total burning of the total amount of the fuel of combustion in IC engine Expect data.At frame 404, inlet temperature controller 102 receives the engine speed data of the engine speed of instruction internal combustion engine.

At frame 406, inlet temperature controller 102 is based at least partially on total burning fuel data and engine speed number According to calculating radiator flow velocity.In accordance with an embodiment of the present disclosure, inlet temperature controller 102 can also be counted using additional data Calculate radiator flow velocity, such as radiator temperature, engine export temperature and environmental pressure.

At frame 408, inlet temperature controller 102 is based at least partially on radiator flow velocity to adjust coolant fluid Radiator flow velocity.According to one or more embodiments, adjusting radiator flow includes the stream for increasing coolant fluid to radiator The flow measured and reduce coolant fluid by radiator bypass.On the contrary, in one or more embodiments, adjusting radiator stream Amount includes reducing coolant fluid to the flow of radiator and increasing flow of the coolant fluid by radiator bypass.

Other process can also be included, and should be understood that the process described in Fig. 4 only indicates to illustrate, and And other processes can be added in the case where not departing from the scope of the present disclosure and spirit, or can remove, modify or again Arrange existing process.

It should be understood that the disclosure can be in conjunction with the calculating environment reality of any other type currently known or develop later It is existing.For example, Fig. 5 shows the block diagram of the processing system 500 for realizing technique described herein.In this example, processing system 500 have one or more central processing unit (processor) 21a, 21b, 21c etc. (jointly or be referred to as processor 21 with/ Or processing unit).In in terms of the disclosure, each processor 21 may include Reduced Instruction Set Computer (RISC) micro process Device.Processor 21 via system bus 33 be coupled to system storage (for example, random access memory (RAM) 24) and it is various its His component.Read-only memory (ROM) 22 is coupled to system bus 33, and may include the certain bases for controlling processing system 500 The basic input/output (BIOS) of this function.

Further illustrate input/output (I/O) adapter 27 and network adapter 26 for being coupled to system bus 33.I/ O adapter 27 can be the small-sized meter communicated with hard disk 23 and/or another memory driver 25 or any other like Calculation machine system interface (SCSI) adapter.I/O adapter 27, hard disk 23 and storage device 25 are herein collectively referred to as mass storage 34.Operating system 40 for executing in processing system 500 can store in mass storage 34.Network adapter 26 System bus 33 and external network 36 are interconnected, enable processing system 500 with other as system communicated.

Display (such as the display monitor) 35 is connected to system bus 33 by display adapter 32, the display adapter 32 may include graphics adapter to improve graphic intensive using the performance with Video Controller.In one aspect of the present disclosure In, adapter 26,27 and/or 32 may be coupled to via centre bus bridge (not shown) be connected to one of system bus 33 or Multiple I/O buses.For connect such as hard disk controller, network adapter and graphics adapter etc peripheral equipment it is suitable I/O bus generally include the common protocol of such as peripheral component interconnection (PCI) etc.Additional input-output apparatus is shown It is shown as being connected to system bus 33 via user interface adapter 28 and display adapter 32.Keyboard 29, mouse 30 and loudspeaker 31 can be interconnected to system bus 33 via user interface adapter 28, and user interface adapter 28 may include for example will be multiple Device adapter is integrated into the Super I/O chip in single integrated circuit.

In some aspects of the disclosure, processing system 500 includes graphics processing unit 37.Graphics processing unit 37 is special The electronic circuit of door design, is designed as operating and changing memory, to accelerate the frame buffer for being output to display The creation of middle image.In general, graphics processing unit 37 is very efficient in terms of operation computer graphical and image procossing, and have There is the structure of highly-parallel, so that it is more more effective than universal cpu for concurrently handling the algorithm of chunk data.

Therefore, as this paper is configured, processing system 500 includes including being with the processing capacity of the form of processor 21 The storage capacity of system memory (such as RAM 24) and mass storage 34, such as input unit of keyboard 29 and mouse 30, And the fan-out capability including loudspeaker 31 and display 35.In some aspects of the disclosure, system storage (such as RAM 24) a part and the common storage program area of mass storage 34, with various parts shown in Coordination Treatment system 500 Function.

The various exemplary descriptions of the disclosure have been presented for purposes of illustration, but are not intended to exhaustive or limitation In the disclosed embodiments.In the case where not departing from the scope and spirit of described technology, many modifications and variations for Those skilled in the art will be apparent.Selecting term as used herein is to best explain this technology Principle, practical application or technological improvement are better than the technology found in the market, or those skilled in the art is enable to manage Solve presently disclosed technology.

Although describing above disclosure by reference to exemplary embodiment, it will be appreciated, however, by one skilled in the art that Various changes can be made and its element can be replaced with equivalent without departing from its range.It is repaired furthermore it is possible to make many Change so that specific condition or material adapt to the introduction of the disclosure, without departing from its base region.Therefore, it is intended that this technology is unlimited It in disclosed specific embodiment, but will include all embodiments fallen within the scope of the present application.

Claims (10)

1. a kind of for controlling the computer implemented method of the temperature of the coolant fluid of the inlet of internal combustion engine, the method packet It includes:

The total burning fuel data for indicating the total amount by the fuel of the combustion in IC engine are received by processing unit；

The engine speed data for indicating the engine speed of the internal combustion engine is received by processing unit；And

Total burning fuel data and the engine speed data are based at least partially on by the processing unit to count Radiator flow velocity is calculated, to obtain the temperature set-point of the inlet of the engine；And pass through the processing unit at least portion Ground is divided to adjust radiator flow based on the radiator flow velocity.

2. computer implemented method according to claim 1, wherein adjusting the radiator flow further comprises increasing The coolant fluid to radiator flow and reduce flow of the coolant fluid by radiator bypass.

3. computer implemented method according to claim 1, wherein adjusting the radiator flow further comprises reducing The coolant fluid to radiator flow and increase flow of the coolant fluid by radiator bypass.

4. computer implemented method according to claim 1, wherein adjusting the radiator stream of the coolant fluid Amount further includes control valve, to adjust the radiator flow of the coolant fluid.

5. computer implemented method according to claim 1, wherein calculating the radiator flow velocity also at least partly ground In radiator temperature.

6. computer implemented method according to claim 1, wherein calculating the radiator flow velocity also at least partly ground In engine export temperature.

7. computer implemented method according to claim 1, wherein calculating the radiator flow velocity also at least partly ground In environmental pressure.

8. a kind of system for controlling the temperature of the coolant fluid of the inlet of internal combustion engine, the system comprises:

Memory including computer-readable instruction；And

Processing unit, for executing the computer-readable instruction for implementing a kind of method, which comprises

The total burning fuel data for indicating the total amount by the fuel of the combustion in IC engine are received by the processing unit；

The engine speed data for indicating the engine speed of the internal combustion engine is received by processing unit；And

Total burning fuel data and the engine speed data are based at least partially on by the processing unit to count Radiator flow velocity is calculated, to obtain the temperature set-point of the inlet of the engine；And pass through the processing unit at least portion Ground is divided to adjust radiator flow based on the radiator flow velocity.

9. system according to claim 8, wherein adjusting the radiator flow further comprises increasing the coolant Fluid to radiator flow and reduce flow of the coolant fluid by radiator bypass.

10. a kind of for controlling the computer program product of the temperature of the coolant fluid of the inlet of internal combustion engine, the calculating Machine program product includes:

Computer readable storage medium has the program instruction embodied with it, wherein the computer readable storage medium sheet Body is not temporary signal, and described program instruction can be executed by processing unit, so that it includes following step that the processing unit, which executes, Rapid method:

The total burning fuel data for indicating the total amount by the fuel of the combustion in IC engine are received by the processing unit；

The engine speed data for indicating the engine speed of the internal combustion engine is received by processing unit；And

Total burning fuel data and the engine speed data are based at least partially on by the processing unit to count Radiator flow velocity is calculated, to obtain the temperature set-point of the inlet of the engine；And pass through the processing unit at least portion Ground is divided to adjust radiator flow based on the radiator flow velocity.