CONTROL METHOD OF COOLING SYSTEM FOR VEHICLE

10-04-2017 дата публикации
Номер:
KR101724958B1
Принадлежит: HYUNDAI MOTOR COMPANY
Контакты:
Номер заявки: 01-15-102073538
Дата заявки: 07-12-2015

[1]

The invention relates to a cooling system of a vehicle for controlling, ECU drive point predicted from the cooling system of a vehicle to an energy control method of predicting pre-flow control valve are disclosed.

[2]

[3]

Initial start of vehicle engine is sufficiently large to cold conditions the worm [ep[ep] it became conditions contrast fuel economy his fellow workers. The reasons, low oil temperature of a cold engine due to the rubbing of the large state of oil in a high viscosities, the equipment is also heat loss which results in its cylinder wall and the wall surface to, combustion stability is formed deeper than are disclosed.

[4]

The, control method and engine durability in order to initially starting temperature of an engine at normal temperatures of rapid temperature and a coring is required and that disclosed.

[5]

[6]

In the case of conventional cooling system, cooling water outlet and inlet water pump is fitted to the engine in a controlled manner in, through coolant into the engine water pump, cooling circuit as it circulates in the other. And, the cooling circuit on the flow control valve is provided in the first step can be nitride flow direction control.

[7]

I.e., upon initial start of vehicle, temperature of the cooling water flow rate and flow path using the flow control valve by controlling early, tape stagnation temperature control to perform rapid temperature cutting can be disclosed. And, after the warm-up through a high contrast operated operated cooling coolant recovered and the existing engine temperatures, etc. is improved through heat loss and engine friction.

[8]

[9]

However, in the case of target cooling operated flow control valve used in conventional cooling systems controlled, valve opening speed but relatively quick flexible material, cooling water circulation flow therefore physical behaviour is slowed down flow control operation of the valve point is risen delays flow tides. The, fast operating mode even with varying rapid target nitride etc. can reach the need for precisely control logic required.

[10]

[11]

Background of the invention are obviated according to the background technique is described for increase of ephemeral, consultation described with corresponding to that taken by known conventional techniques to admit don't will.

[12]

[13]

KR 10 - 2013 - 0031540 A

[14]

The present invention relates to call fault function is composed of such as described above, ECU drive point energy predicted from the predicting flow control valve or a reversed F. pre-closed cooling system for vehicle control method.

[15]

[16]

The configuration of the present invention for such purposes, the target cooling temperature required for nitride follow target vertically derived vertically radiator deriving step; and the target vertically, the vehicle's running state output value derived relation that reflect the required cooling water heat radiator through radiator efficiency maps using cooling water deriving step derived target; that reflect the running condition of the motor vehicle and an output, target cooling water cooling circuit provided within the cooling water derived relation flow map determining valve flow control valve dog generositydog generosity decision step; comprising can be characterized.

[17]

The vertically deriving step, the target required to reach target nitride nitride nitride nitride ten flows deriving heat flux deriving step; combustion fuel energy that is delivered to the time delay having an identical in ten flows cooling water, cooling water deriving fuel heat transmitting quantity that is delivered to the heat transmitting quantity fuel derived step; the cooling water temperature step nitride with ten flows target derived from derived heat flux, the heat transmitting quantity calculated fuel heat transmitting quantity calculating step of calculating amount of heat radiated through the relationship derived from the data size of target vertically; can be a.

[18]

The cooling water temperature heat flux deriving step, cooling water temperature input stage receives current cooling temperature; engine rpm, coolant it comes the map relationship having damper according to target cooling temperature derived using nitride deriving step; the target it comes and cooling water, cooling water and current, non-heating and cooling water, cooling water current ten flows nitride nitride target converts the three analog values derived from the relation calculating step of calculating heat flux; can be a.

[19]

The fuel heat transmitting quantity deriving step, fuel-fuel per unit time having damper made of input stage; the fuel of low heating and, as a relation between a fuel supply per unit time calculating step of calculating heat flux fuel ten flows fuel; cooling the fuel heat flux are calculated for cutting fuel that is delivered to the fuel ten flowsloss mapin ten flows applied heat flux transfer fuel calculating step of calculating; and the coolant that is delivered to the fuel in ten flows identical time delay, calculating step of calculating a heat transmitting quantity of fuel per unit time delivered water ten flows fuel; can be a.

[20]

The time delay model is relationship of time-delay coefficients can be determined according to fuel consumption.

[21]

The deriving step includes cooling water, the amount of heat radiated target vertically and are calculated, current cooling with decision, with vehicle speed, formed as air one relationship using cooling water radiator efficiency maps can be to derive target.

[22]

Calculating the deviation of the target cooling water temperature and a current cooling water temperature, the deviation from feedback control to ensure feedback operating amount feedback control step; the feedback manipulated variable corresponding to the flow control valve dog walking fixed quantitydog walking fixed quantity operation step valve operation; and the valve dog walking fixed quantity valve in dog generosity determining final valve generosity summed to final valve generosity decision step; can be a.

[23]

[24]

Through the invention relates to whether the solution, cooling and thermal energy in real time based on current vehicle driving state having, according to the target cooling temperature required for thermal cooling water based on nitride follow valve vertically by predicted, flow control valve and the corresponding predetermined operating, the nitride to improve precision and control speed and equal to or less.

[25]

[26]

Figure 1 shows a cooling system of a vehicle also represents a coarse surface. Figure 2 shows a cooling system of a vehicle by the method therefore is to explain the control flow. Figure 3 shows a 2nd applied there, thus indicating water temperature levels compared to the existing cooling during drug application.

[27]

Preferred embodiment of the present invention detailed by the attached drawings as follows.

[28]

[29]

Figure 1 shows a cooling system applicable to determine the invention shown, the HTML page, engine (1) in the rear end of the engine cooling water temperature sensor for measuring a temperature of exhaust valves can be lock (3) can be provided. At least a part of, the cooling water temperature sensor (3) engine (1) and flow regulation valve (5) disposed between the engine (1) adapted to measure the air temperature in heat exchange with the can has been made.

[30]

And, engine (1) comprising a cooling with circulating cooling water exiting the channel of several can be, each branch point in a coolant passing through the engine is fluid communication with the flow control valve (5) is provided, each cooling water through a flow path to selectively it will send to spill can control opening and closing. At least a part of, each passage a radiator is, EGR cooler, heater core, oil cooler and the like can be arranged.

[31]

[32]

On the other hand, the cooling system in flow control valve to a method for control, the present invention relates to step (S100) derived vertically, deriving step (S200) and valve dog generosity decision step (S300) comprising cooling water can.

[33]

[34]

The reference 2 also, derived in step (S100) first vertically, control section follow the target cooling temperature required for nitride target vertically can be derived.

[35]

And, in step (S200) derived cooling water, control section and the target vertically, an output value which would reflect the vehicle's running state using heat radiator through radiator efficiency maps derived relation required to derive target cooling water can be.

[36]

Also, in decision step (S300) valve dog generosity, control screw that reflect the traveling state of an output, target cooling water cooling circuit provided within the cooling water derived relation flow mapdog generosity flow control valve can be determined.

[37]

[38]

[39]

[40]

I.e., cooling and thermal energy in real time based on current vehicle driving state having, according to the target cooling temperature required for thermal cooling water based on nitride follow valve vertically by predicted, flow control valve so that an operation corresponding reaction chamber. The, relative to the flow control valve quickly reaches the target nitride nitride than to remove the alcohol, the faster speed rapid with inside strong operating mode even with varying cooling temperature is equal to precisely control.

[41]

[42]

On the other hand, the vertically (S100) is derived step, step (S110) derived heat flux nitride on again, fuel heat transmitting quantity (S120) and vertically (S130) derived step comprising a step of calculating can.

[43]

Wherein, the step (S110) is derived heat flux nitride, nitride nitride ten flows required to reach the target to deriving a target nitride, nitride on again (S111) input stage, deriving step (S112) and cooling water temperature heat flux calculation step (S113) nitride comprising the antennas.

[44]

[45]

For example, the cooling water temperature reading is input stage (S111) input (actual nitride) can be supplied with cooling water, the cooling water temperature sensor provided on a cooling circuit is measured, the measured control inputs can be.

[46]

And, the cooling water temperature derived in step (S112), the current engine rpm, coolant it comes the map relationship having damper according to derive target cooling temperature can be using. At least a part of, an IGBT comes the map coolant may be stored in a control unit, control inputs engine rpm with a fuel supply trolley cooling temperature can be derived.

[47]

Also, the cooling water temperature in heat flux calculation step (S113), the target it comes and cooling water, cooling water and current, non-heating and cooling water, cooling water current operations on the target process by the relationship derived from formulae of ten flows nitride can be calculated.

[48]

[49]

[50]

[51]

Next, the step (S120) derived fuel heat transmitting quantity, combustion fuel energy that is delivered to the coolant in ten flows identical time delay, that is delivered to the fuel to coolant heat transmitting quantity deriving, on back-fuel input stage (S121), fuel heat flux calculation step (S122) on, transfer fuel heat flux calculation step (S123) and fuel heat transmitting quantity can be the crab it buys phase-based binder.

[52]

[53]

For example, the input stage (S121) of in-fuel supplied fuel per unit time can be calculated by having damper control inputs.

[54]

And, the heat flux calculation step (S122) fuel, the fuel of low heating and, as a relation between a fuel supply per unit time can be calculating formulae of fuel by using ten flows derived below.

[55]

[56]

[57]

Also, the transfer fuel heat flux calculation step (S123), the fuel heat flux calculation step (S122) for loss mapin ten flows of fuel calculated in the below formulae of cooling applied in the first step that is delivered to the fuel ten flows can be calculated.

[58]

[59]

And, in a heat transmitting quantity calculation step (S124) fuel, cooling water that is delivered to the fuel in ten flows identical time delay, that is delivered to the fuel ten flows cooling water per unit time can be calculated.

[60]

Cooling water per unit time that is delivered to the fuel ten flows It can display the word disclosed.

[61]

At least a part of, the time delay model is relationship of time-delay coefficients can be determined according to fuel consumption.

[62]

I.e., more time-delay coefficients rage increases fuel consumption, increases fuel consumption small time-delay coefficients by applying a precise time delay model, fuel consumption more than when the coolant that is delivered to the fuel to be coated may be greater ten flows.

[63]

[64]

Next, in the step of calculating vertically (S130), the step (S110) nitride with ten flows target derived from derived heat flux cooling water, the heat transmitting quantity calculated by the formulae of fuel heat transmitting quantity relationship derived from operations on the target vertically can be calculating process.

[65]

[66]

[67]

I.e., nitride nitride brought into and maintained in actual measured target for vertically to used to compute, as well as follow the target cooling temperature required for actual cooling water heat ten flows, current that is consumed in the first step of combusting a fuel that is delivered to the heat transmitting quantity by considering simultaneously, by computing a target cooling water temperature needed to achieve vertically, computed from the present operating point of predicting vertically to precisely control the current nitride can be required to be coated.

[68]

[69]

And, cooling water of the present invention derived in step (S200), the vertically calculation step (S130) calculated in the target vertically and, output values that reflect the current vehicle traveling state of cooling with decision, with vehicle speed, formed as air one relationship using cooling water radiator efficiency maps can be to derive target below.

[70]

[71]

[72]

[73]

On the other hand, the present invention relates to feedback control step (S400), step (S410) and final valve generosity decision step (S500) further includes valve dog walking fixed quantity operation can be disclosed.

[74]

For example, in the feedback control step (S400), and current deviation of target nitride nitride (TTarget- TAct) Outputs a signal, the deviation from feedback controller feedback control feedback operating amount can be secured.

[75]

And, in step (S410) dog walking fixed quantity valve operation, the feedback manipulated variable corresponding flow control valve dog walking fixed quantity (VTarget, pid) Can be calculated.

[76]

The, in the end valve generosity decision step (S500), such as below can be summed to determine final valve generositydog walking fixed quantity valve in dog generosity formulae of the valve.

[77]

[78]

[79]

I.e., nitride nitride through feedback control based on the deviation of the target and current determined by turning valve dog generosityin flow map cooling water, cooling water flow map be overcome so as to improve control precision, particularly strong target cooling temperature following fast even when stopping velocity to remove the alcohol, cooling water temperature control can be performed more to be coated.

[80]

In addition, Figure 3 2nd application of the present invention, a radiator water temperature levels compared to existing cooling during drug application in the chemical formula, the cooling behavior of variation (fluctuation) in the case of existing engine operated upper range yet, when operated in accordance with the control of the present invention stably cooling.

[81]

[82]

As above-mentioned, the present invention relates vehicle driving state based on thermal energy in real time and with cooling, according to the target cooling temperature required for thermal cooling water based on nitride follow valve vertically by predicted, flow control valve so that an operation corresponding reaction chamber. The, target nitride nitride to reach by a quicker and more precise controls the flow control valve, to improve precision of nitride can be equal to or less than.

[83]

[84]

On the other hand, the invention relates to the embodiments of the present invention detailed in various angular positions but only vertical deformation and modifying feature range in which it is apparent that one skilled, these modified and modifying belonging to more convenience for the operation of relay by claims are disclosed.

[85]

[86]

1:3 engine: cooling water temperature sensor 5: flow control valve 7: control unit



[1]

The present invention relates to a control method of a cooling system for a vehicle, which is able to estimate energy from a current driving point of a vehicle and to control a flow control valve in advance, comprising: a step of deducting a heat radiation volume to deduct a target heat radiation volume from a radiator, which is needed for a cooling water temperature to reach a target cooling temperature; a step of deducting a cooling water flux to use a radiator efficiency map, which is deducted from the relationship of output values, which reflect the target heat radiation volume and the driving status of the vehicle, and to deduct a target cooling water flux, which needs heat radiation through the radiator; and a step of determining a valve opening volume to use a cooling water flux map, which is deducted from the relationship of output values, which reflect the driving status of the vehicle, and the target cooling water flux, and to determine a valve opening volume of the flow control valve which is placed in a cooling circuit.

[2]

COPYRIGHT KIPO 2017

[3]

[4]

  • (AA) RPM, fuel volume
  • (BB) Target cooling water temperature
  • (CC) Time delay model
  • (DD) Heat rejection to cooling water per hour
  • (GG) Cooling water flux map by RPM and valve opening volume
  • (HH) Determine the valve opening volume
  • (JJ) Vehicle speed
  • (KK) External air temperature
  • (LL) Radiator efficiency application
  • (MM) Required cooling water flux
  • (S111,II,EE) Actual cooling water temperature
  • (S112,FF) Target cooling water temperature
  • (S113) Target heat flux for reaching the target
  • (S121) Fuel consumption per hour
  • (S122,S123) Fuel energy → Heat transfer rate of cooling water (cooling loss application)
  • (S130) Calculate the required heat radiation volume
  • (S500) Determine the final valve opening rate



The target cooling temperature required for nitride follow target vertically derived vertically radiator deriving step; and the target vertically, an output value which would reflect the vehicle's running state using heat radiator through radiator efficiency maps derived relation required cooling water deriving target cooling water deriving step; an output reflecting the running condition of the motor vehicle and, derived relation target cooling water cooling circuit provided within the cooling water flow control valve dog generosityflow map determining valve dog generosity decision step; and, the amount of heat radiated deriving step, the target required to reach target nitride nitride nitride nitride ten flows deriving heat flux deriving step; combustion fuel energy that is delivered to the coolant in ten flows identical time delay, deriving fuel heat transmitting quantity that is delivered to the cooling water heat transmitting quantity fuel derived step; the cooling step with ten flows nitride target derived from derived heat flux temperature, the heat transmitting quantity calculated fuel heat transmitting quantity calculating step of calculating vertically through the relationship derived from the data size of target vertically; characterized by comprising a cooling system of a vehicle control method.

Deletion

According to Claim 1, the cooling water temperature heat flux deriving step, cooling water temperature input stage receives current cooling temperature; engine rpm, coolant it comes the map relationship having damper according to target cooling temperature derived using nitride deriving step; the target it comes and cooling water, cooling water and current, non-heating and cooling water, cooling water current ten flows nitride nitride target converts the three analog values derived from the relation calculating step of calculating heat flux; characterized by comprising a cooling system of a vehicle control method.

According to Claim 1, the fuel heat transmitting quantity deriving step, made of fuel supply per unit time-fuel input stage; the fuel of low heating and, as a relation between a fuel supply per unit time calculating step of calculating heat flux fuel ten flows fuel; cooling the fuel heat flux are calculated for cutting fuel that is delivered to the fuel ten flowsloss mapin ten flows applied heat flux transfer fuel calculating step of calculating; and the coolant that is delivered to the fuel in ten flows identical time delay, calculating step of calculating a heat transmitting quantity of fuel per unit time delivered water ten flows fuel; characterized by comprising a cooling system of a vehicle control method.

According to Claim 4, the time delay model is characterized according to fuel consumption relationship of time-delay coefficients a lenticular screen cooling system of a vehicle control method.

According to Claim 1, the deriving step includes cooling water, the amount of heat radiated target vertically and are calculated, current cooling with decision, with vehicle speed, formed as a target flow rate using cooling air one radiator efficiency maps relationship characterized by deriving a cooling system of a vehicle control method.

According to Claim 1, calculating the deviation of the target cooling water temperature and a current cooling water temperature, the deviation from feedback control to ensure feedback operating amount feedback control step; the feedback manipulated variable corresponding to the flow control valve dog walking fixed quantitydog walking fixed quantity operation step valve operation; and the valve dog walking fixed quantity valve in dog generosity determining final valve generosity summed to final valve generosity decision step; characterized by comprising a cooling system of a vehicle control method.