CN102205843B - For controlling the devices and methods therefor of electric water pump of hybrid vehicle - Google Patents
For controlling the devices and methods therefor of electric water pump of hybrid vehicle Download PDFInfo
- Publication number
- CN102205843B CN102205843B CN201010563109.8A CN201010563109A CN102205843B CN 102205843 B CN102205843 B CN 102205843B CN 201010563109 A CN201010563109 A CN 201010563109A CN 102205843 B CN102205843 B CN 102205843B
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- Prior art keywords
- water pump
- motor driven
- driven water
- speed
- vehicle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/14—Safety means against, or active at, failure of coolant-pumps drives, e.g. shutting engine down; Means for indicating functioning of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/12—Cabin temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/66—Vehicle speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
Abstract
The present invention relates to a kind of pump control unit and control method thereof of hybrid electric vehicle.Exemplary means according to the present invention comprises: the calorstat determining the circulating path of cooling system conditioner; Coolant temperature sensor; Be configured to the Motor driven water pump of pumping coolant; And control part, when vehicle enters EV pattern or engine idle stop mode, if coolant temperature exceeds predetermined temperature value, then control Motor driven water pump with circulating coolant.Illustrative methods of the present invention comprises: if coolant temperature is lower than predetermined value, then suspend the operation of Motor driven water pump until cooling fan work, and controls the actuating speed of Motor driven water pump according to the load of cooling fan in operation.
Description
Technical field
The present invention relates to the Motor driven water pump being applied to vehicle, particularly hybrid electric vehicle.
Background technology
Hybrid electric vehicle developed and day by day volume production thus sell and driven by user.There is different types of hybrid electric vehicle at present.Typical hybrid electric vehicle generally includes driving engine and electrical motor.When hybrid electric vehicle is in electric vehicle mode (EV pattern), only electrical motor work.Alternatively, when hybrid electric vehicle is hybrid electric vehicle pattern (HV pattern), electrical motor and driving engine are all in work.
It is battery charging that hybrid electric vehicle is generated electricity by regenerative brake usually, and reduces consumption of fuel and waste gas by ISG (idle speed stop-start) system.Hybrid electric vehicle by force circulating coolant to prevent engine overheat.Therefore, if hybrid electric vehicle enters EV pattern or ISG pattern when coolant temperature is high, then quit work by the water pump of power operation, cooling system conditioner is not circulated.Due in engine idle stop mode and HV pattern, driving engine repeats to restart with high temperature coolant, if therefore engine loading increases fast after driving engine is restarted, then cooling system conditioner may be overheated.
If user requires to use heating system in EV pattern or engine idle stop mode, then can produce hot coolant not in the problem of heating system Inner eycle.In addition, EV pattern and engine idle stop mode can not perform, until engine preheating in cryogenic coolant situation.
Above-mentioned information disclosed in background technology is only the understanding for strengthening background technology of the present invention, and therefore can containing not forming prior art well known by persons skilled in the art.
Summary of the invention
The present invention makes efforts to provide a kind of device for controlling electric water pump of hybrid vehicle.Particularly, these apparatus and method have engine coolant temperature high and perform EV pattern or engine idle stop (idleenginestopmode) pattern time, the coolant temperature of driving engine is reliably controlled, to make the advantage that driving engine can not be overheated by operating Motor driven water pump by force.
The invention provides a kind of Motor driven water pump, it continuous working with circulating coolant thus reliably can operate heating device in car.In addition, the invention provides the variable control to Motor driven water pump.Motor driven water pump can be changed according to the factor value (factorvalue) of speed of a motor vehicle mapping by application when coolant temperature is high.
The present invention can also by until the load of cooling fan radiator cooling fan works after an engine cold start according to stopping at Motor driven water pump, controlling Motor driven water pump, providing the cooling effectiveness of optimization changeably.
According to one embodiment of the present invention, the Motor driven water pump control setup of hybrid electric vehicle comprises: calorstat, determines the circulating path of cooling system conditioner; Coolant temperature sensor, is used for detecting coolant temperature; Motor driven water pump; Be configured to pumping coolant; And control part, when hybrid electric vehicle enters EV pattern or engine idle stop mode, if coolant temperature exceeds predetermined temperature, then control Motor driven water pump circulating coolant.
In another embodiment, if need heating device work under EV pattern or engine idle stop mode, then control part can drive Motor driven water pump.In another embodiment, if when coolant temperature exceeds predetermined temperature value, vehicle enters engine idle stop mode, then control part can change the actuating speed of Motor driven water pump according to the speed of a motor vehicle.
In a further embodiment, if mistake detected from cooling system, then control part can enter limp-home mode (limphomemode), output alarm message, and drives Motor driven water pump with circulating coolant.
The present invention also provides a kind of Motor driven water pump control method of hybrid electric vehicle.In an embodiment of the invention, the method comprises the following steps: determine whether hybrid electric vehicle enters EV pattern or engine idle stop mode; If hybrid electric vehicle enters EV pattern or engine idle stop mode, then determine whether coolant temperature exceeds predetermined value; If coolant temperature exceeds predetermined value, drive Motor driven water pump, if coolant temperature is lower than predetermined value, close Motor driven water pump; If the speed of a motor vehicle is greater than predetermined value in the driven situation of Motor driven water pump, then change the actuating speed of Motor driven water pump according to the speed of a motor vehicle.
In another embodiment, if need to operate heating device in EV pattern or engine idle stop mode, then Motor driven water pump can be driven with circulating coolant.
In yet another embodiment, the Motor driven water pump control setup of hybrid electric vehicle can comprise: calorstat, determines the circulating path of cooling system conditioner according to the coolant temperature of discharging from driving engine; Be used for distributing the radiator of the heat absorbed in cooling system conditioner; Be arranged in the cooling fan that radiator side is used for drying; Be arranged on the Motor driven water pump of circulating coolant between driving engine and calorstat; With the control part carrying out switch Motor driven water pump according to cooling fan live load.
In one embodiment, control part can the environmental aspect of monitoring engine and driving situation, if mistake detected from monitor data, enters limp-home mode to operate Motor driven water pump.
In another embodiment, if coolant temperature is lower than predetermined temperature value, then control part can stop the operation of Motor driven water pump until first time operates cooling fan after ignition start.
In another embodiment, if cooling fan slow running, then control part second speed can drive Motor driven water pump; If cooling fan is closed, then control part is to be less than the First Speed of second speed to drive Motor driven water pump.
In another embodiment, if with high-speed driving cooling fan, then control part can be greater than the third speed of second speed to drive Motor driven water pump.In a further embodiment, if the speed of a motor vehicle exceeds predetermined speed, then control part increases the actuating speed of monitored water pump according to speed of a motor vehicle factor value.
In another embodiment, the Motor driven water pump control method of hybrid electric vehicle also can comprise: when coolant temperature is lower than predetermined value, suspends the operation of Motor driven water pump, until cooling fan work; And when cooling fan works, control the step of the actuating speed of Motor driven water pump according to the load of cooling fan.
In another embodiment, when with driven at low speed cooling fan, Motor driven water pump can be driven with second speed.
In yet another embodiment, when cooling fan stops, can be less than the First Speed of second speed to drive Motor driven water pump.
In a further embodiment, if determine that cooling fan is with high-speed operation, and determine that driving engine is in high load condition based on fixed coolant flow, then can be greater than the third speed of second speed to drive Motor driven water pump.
In one embodiment, if cooling fan is with high-speed operation, the speed of a motor vehicle exceeds preset vehicle speed value, and determines that driving engine is at a high speed and high load condition, then can apply the factor value corresponding to the speed of a motor vehicle to be greater than the speed drive Motor driven water pump of third speed.
In another embodiment, under the high speed or high load condition of driving engine, the speed of Motor driven water pump can be changed according to the speed of a motor vehicle, make the speed of Motor driven water pump increase pari passu or reduce.
In yet another embodiment, cooling system conditioner optimally can circulate according to driving condition and the speed of a motor vehicle, to make driving engine can not be overheated or excessively cold.
In another embodiment, when vehicle enters EV pattern or engine idle stop mode, Che Nei can be heated by temperature booster.
Accompanying drawing explanation
More easily understand how to make and use apparatus and method of the present invention for making those skilled in the art, the preferred embodiment of the present invention describes the present invention in detail with reference to accompanying drawing below, wherein:
Fig. 1 is schematic diagram, and the Motor driven water pump control setup of the hybrid electric vehicle according to apparatus of the present invention embodiment is shown;
Fig. 2 is the diagram of circuit corresponding with schematic diagram shown in Fig. 1, and the Motor driven water pump rate-determining steps of the hybrid electric vehicle according to the inventive method embodiment is shown;
Fig. 3 is schematic diagram, and the control of the Motor driven water pump of the hybrid electric vehicle according to another embodiment of apparatus of the present invention is shown;
Fig. 4 is the diagram of circuit corresponding with schematic diagram shown in Fig. 3, and the Motor driven water pump rate-determining steps of the hybrid electric vehicle of another embodiment according to apparatus of the present invention is shown; And
Fig. 5 is the diagram of curves corresponding with diagram of circuit shown in Fig. 4, and the Control timing sequence of the Motor driven water pump of hybrid electric vehicle is according to an embodiment of the invention shown.
The explanation of Reference numeral
100: driving engine
110: calorstat
120: radiator
121: cooling fan
130: coolant temperature sensor
140: Motor driven water pump
150: control part
Detailed description of the invention
In the following detailed description, in order to the object explained, only illustrate and illustrate some not routine property embodiment of the present invention.
Those skilled in the art should understand that, without departing from the spirit and scope of the present invention, described embodiment can also have that other is multi-form, and accompanying drawing and illustrative in nature should be deemed to be illustrative, but not scope of the present invention is limited to specific embodiment as herein described.
Get back to Fig. 1 below, Fig. 1 illustrates the Motor driven water pump control setup of the hybrid electric vehicle according to one embodiment of the present invention.The present invention includes driving engine 100, calorstat 110, radiator 120, coolant temperature sensor 130, Motor driven water pump 140 and control part 150.
According to this exemplary embodiment, calorstat 110, according to the temperature of the cooling system conditioner of discharging from driving engine 100, determines the circulating path of cooling system conditioner to bypass circuit or radiator 120.
The heat of cooling system conditioner is dispersed in air by the area of contact in the middle part of radiator by radiator 120, and cooling fan is arranged in side in the middle part of radiator based on the travel conditions of coolant temperature and vehicle, to dry by force in the middle part of radiator.
Coolant temperature sensor 130 detects the coolant temperature by radiator 120 or bypass circuit inflow engine 100, and by the Signal transmissions that detects to control part 150.
Motor driven water pump 140 is arranged between driving engine 100 and calorstat, and by switch.Operating speed is by determining whether that the control signal of circulating coolant controls.
The one of Motor driven water pump 140 normally in clutch-type or power type.
Control part 150 determines whether vehicle enters EV pattern or the engine idle stop mode from HV pattern.If vehicle enters into EV pattern or engine idle stop mode when coolant temperature exceedes predetermined value, then control part 150 drives Motor driven water pump 140 so that by driving engine 100 circulating coolant.In this case, have nothing to do with the operation of driving engine 100, Motor driven water pump 140 drives cooling system conditioner to circulate, and makes driving engine can not be overheated.
In addition, control part 150 can drive Motor driven water pump 140 thus periodic cycle cooling system conditioner, and the situation making vehicle interior temperature can enter EV pattern or engine idle stop mode based on vehicle heats.
According to one embodiment of the present invention, if the temperature of the cooling system conditioner detected by temperature sensor 130 exceedes predetermined value, be typically about 90 DEG C-96 DEG C, vehicle enters engine idle stop mode or EV pattern, then control part 150 applies the factor value mapped according to the speed of a motor vehicle, so that change controls Motor driven water pump 140 and provides the cooling effectiveness of optimization.If the coolant temperature detected by temperature sensor 130 is lower than predetermined value, then control part 150 closes Motor driven water pump 140.
And in further embodiment, if mistake detected from cooling system, then control part 150 exports alarm signal and enters limp-home mode, so that continuous handling Motor driven water pump 150, can circulate within the engine to make cooling system conditioner simultaneously.
With reference to the step in figure 2, control part 150 analyzes the drive singal (step S101) detected by sensor, diagnosis cooling system (step S102), and determines diagnostic result whether normal (step S103).
If determine that cooling system is in abnomal condition in step s 103, then control part 150 exports alarm signal with preordering method, and enter limp-home mode, so that continuous handling Motor driven water pump 150, to make cooling system conditioner reliably by cycle of engine (step S104).
If determine that cooling system is in normal condition in step s 103, then control part 150 identifies the state (step S105) be switched on or switched off of heater switch, to determine whether heating arrangement is unlocked (step S106).
If determine that heating device is unlocked in step s 106, then regardless of the temperature of cooling system conditioner, Motor driven water pump 140 is all driven (step S107), so that circulating coolant makes vehicle interior temperature raise (step S108).
If do not open heating device in step s 106, then determine drive pattern (step S109), then determine whether vehicle enters into EV pattern or engine idle stop mode (step S110) from HV pattern.
If determine that hybrid electric vehicle enters into EV pattern or engine idle stop mode in step s 110, then determine whether the temperature of cooling system conditioner exceeds predetermined value (about 90 DEG C-96 DEG C) (step S111, step S112).
Then, if coolant temperature is less than predetermined value in step S112, then Motor driven water pump 140 closes the load, minimizing consumption of fuel (step S113) that reduce driving engine 100 or battery.
If coolant temperature exceeds predetermined value in step S112, then average rate drives Motor driven water pump 140, with circulating coolant (step S114).
Although Motor driven water pump 140 is actuated to circulating coolant, but need determine whether the speed of vehicle exceeds predetermined value (step S115).
If determine that the speed of a motor vehicle exceeds predetermined value in step sl 15, then will be applied to the operating speed of Motor driven water pump 140 according to the predetermined factor value of the speed of a motor vehicle, and determine this operating speed (step S116).
After this, control part 150 controls Motor driven water pump 140 with the speed variable determined by the speed of a motor vehicle, thus by cycle of engine cooling system conditioner (step S117).In this case, it is expected to the speed of a motor vehicle higher, the operating speed of Motor driven water pump is faster.
Therefore, in the situation that the patterns of change of hybrid electric vehicle according to the present invention kills engine, the opening and closing of Motor driven water pump are controlled according to coolant temperature, stably to improve the operating efficiency of driving engine.
And, if whether driving engine is opened all open heating device, then by Motor driven water pump circulating coolant to heat interior space, thus improve the reliability of hybrid electric vehicle.
Fig. 3 is schematic diagram, and the Motor driven water pump control setup of the hybrid electric vehicle according to another illustrative embodiments of the present invention is shown.
Embodiments of the present invention comprise: as driving engine 100, calorstat 110, radiator 120, the Motor driven water pump 140 of propulsion source, and control part 150.
At this, calorstat 110 determines the circulating path of cooling system conditioner to bypass path or radiator 120 according to the temperature of the cooling system conditioner of discharging from driving engine 100, is circulated by driving engine 100 to make cooling system conditioner.
The coolant temperature sensor 130 being used for detecting coolant temperature is arranged in the inside of calorstat, and the coolant temperature detected by coolant temperature sensor 130 is transferred to control part 150.
Radiator 120 increases cooling system conditioner with the area of contact by the air in the middle part of radiator to be spread in air by the heat energy of cooling system conditioner.
Cooling fan 121 is arranged in the side of radiator 120, by force air is blown over radiator 120.Based on coolant temperature whether higher than predetermined value, control part 150 according to coolant temperature and riving condition with low speed or high-speed operation cooling fan 121.
Motor driven water pump 140 is arranged in so that according to the control signal transmitted from control part 150 by switch between driving engine 100 and calorstat 110, to control the operating speed of control part 150 changeably thus the circulation of optimization cooling system conditioner.
Usually, Motor driven water pump 140 is one of clutch-type or power type.
Control part 150 is configured to determine coolant flow according to the load of the cooling fan 121 of by force air being blown over radiator 120.Control part is opened or is closed Motor driven water pump 140, and controls the operating speed of Motor driven water pump 140 changeably.
In this embodiment, the coolant temperature that control part 150 can be determined external temperature, engine speed and be detected by coolant temperature sensor 130, to determine driving condition and the ambient conditions of driving engine 100.If mistake detected from diagnostic state, then driving engine 100 exports alarm signal and enters limp-home mode to make cooling system conditioner by Motor driven water pump 140 continuous circulation simultaneously.
In order to shorten the preheating time of driving engine and the soak time of exhaust gas catalyst when engine cold starting, control part 150 stops the operation of Motor driven water pump 140 until cooling fan 121 is operated with cooling radiator 120.
If cooling fan 121 first time work after ignition start, then control part 150 is according to determined coolant flow, drives Motor driven water pump 140 with the second actuating speed.If cooling fan 121 again stops after operation first, then Motor driven water pump 140 operates with circulating coolant until cooling fan task more evenly with the first actuating speed.
When cooling fan 121 high-speed operation, control part 150 according to fan speed determination coolant flow to drive Motor driven water pump 140 with the 3rd actuating speed.If the speed of a motor vehicle exceeds predetermined value, then control part 150 applies the actuating speed that the factor value corresponding to the speed of a motor vehicle compensates Motor driven water pump 140, increases to make coolant flow.
With reference to figure 4, according to a further embodiment of the invention, control part 150 detects ambient-air temperature, engine speed by coolant temperature sensor 130, and coolant temperature (step S101), determines driving engine 100 whether preheating (step S102).
If determine that driving engine 100 is in cold conditions in step s 102, then control part 150 stops the operation of Motor driven water pump 140 with warm-up the engine (step S103).In this case, the water jacket of driving engine 100 is used as thermal bottle (themos) to help driving engine 100 rapidly pre-warming.
When Motor driven water pump 140 is closed, control part 150 monitors the serviceability of cooling fan 121, so that by blow air to radiator 120 (step S104), and determines that whether cooling fan is in work (step S105).
If cooling fan 121 keeps its "Off" state in step S105, then turn back to the operation of step S103 to repeat above-mentioned steps.If determine that cooling fan 121 is with predetermined low loaded work piece, then determine necessary coolant flow (step S106) by the load of cooling fan 121, control part drives Motor driven water pump 140 with circulating coolant with second speed, reliably makes cooling fan maintain low loading condition (step S107) to make driving engine 100.
Then, determine whether cooling fan 121 quits work (step S108).
If determine that in step S108 cooling fan 121 is in work, then this operation turns back to step S107, to drive Motor driven water pump 140 thus circulating coolant with second speed.If determine cooling fan 121 shut-down operation in step S108, then control part 150 drives Motor driven water pump 140 with First Speed, and this First Speed is determined by repeating to test.In this case, First Speed is less than second speed, to make coolant flow lower than the flow (step S109) when cooling fan works.
When with First Speed continuous drive Motor driven water pump 140, determine that whether cooling fan 121 is with high-speed operation (step S110).
If determine that cooling fan 121 is with high-speed operation in step s 110, then determine necessary coolant flow (step S111), control part drives Motor driven water pump 140 with a large amount of cooling system conditioner that circulates with third speed, reliably to control the temperature (step S112) of driving engine 100.
When as mentioned above with third speed driving Motor driven water pump 140, determine whether the speed of a motor vehicle exceeds predetermined value (step S113).In one embodiment, predetermined vehicle speed value is about 80Km/h.
If the speed of a motor vehicle does not exceed predetermined value in step S113, then return the operation of step S112 thus drive Motor driven water pump 140 with third speed.If the speed of a motor vehicle exceeds predetermined value, then control part is according to the high speed application factor value (step S114) of vehicle, determine the final flow rate of cooling system conditioner, and compensate the actuating speed of Motor driven water pump 140 to carry out circulating coolant (step S115) according to the high speed of driving engine and high capacity.
Describe operation of the present invention in detail below with reference to Fig. 5, comprise above-mentioned functions.
With reference to figure 5, if driving engine 100 starts, then close Motor driven water pump (EWP load) in order to rapidly pre-warming driving engine, do not circulate to make cooling system conditioner.If with driven at low speed cooling fan, then control part drives Motor driven water pump (EWP load) with second speed P2, thus circulating coolant.
Afterwards, because coolant temperature reduces because of the work of cooling fan, therefore close cooling fan for keeping coolant temperature equably, and drive Motor driven water pump (EWP load) with circulating coolant with First Speed P1.
And, if with high-speed operation cooling fan, then determine that driving engine is in high load condition, and in order to the cooling system conditioner of the more that circulates, control part drives Motor driven water pump (EWP load), stably to control engine temperature with third speed P3.
In one embodiment, in the high capacity work according to driving engine with third speed P3 driving Motor driven water pump (EWP load), if determine that the speed of a motor vehicle exceeds predetermined vehicle speed value, then control part application speed of a motor vehicle factor determines final coolant flow, and with the speed being greater than third speed to drive Motor driven water pump, reliably control engine temperature by a large amount of circulations of cooling system conditioner.
When high speed and high capacity drive, the speed of Motor driven water pump changes according to the speed of a motor vehicle, increases pro rata to make the internal circulating load of cooling system conditioner or reduces.
When driving engine is with cold starting, the invention provides preheating time of reduction and the soak time of exhaust gas catalyst, the entirety of the EV pattern of reduction and the entry time of engine idle stop mode, the consumption of fuel of reduction and exhaust mass improves.
In addition, circulate to provide cooling system conditioner owing to the present invention is based on drive condition, therefore can avoid engine overheat and improve the stability and reliability of driving.
Although describe the present invention in conjunction with the current exemplary embodiment being considered to practicality above, but should be appreciated that, the present invention is not limited to the disclosed embodiments, but intention contains and is included in various modification in spirit and category that the claims in the present invention limit and equivalent structure.
Claims (17)
1. a Motor driven water pump control setup for hybrid electric vehicle, comprising:
Calorstat, determines the circulating path of cooling system conditioner;
Coolant temperature sensor, is used for detecting coolant temperature;
Motor driven water pump, is configured to pumping coolant; And
Control part, when coolant temperature exceeds predetermined temperature value, if vehicle enters electric vehicle mode or engine idle stop mode, then controls described Motor driven water pump with circulating coolant,
Wherein when coolant temperature exceeds predetermined temperature value, if vehicle enters engine idle stop mode, then described control part changes the actuating speed of described Motor driven water pump according to the speed of a motor vehicle.
2. Motor driven water pump control setup according to claim 1, wherein under described electric vehicle mode or engine idle stop mode, if need heating device work, then described control part drives described Motor driven water pump.
3. Motor driven water pump control setup according to claim 1, if wherein mistake detected, then described control part enters limp-home mode, output alarm message, and drives described Motor driven water pump with circulating coolant.
4. a Motor driven water pump control method for vehicle, comprising:
Determine whether vehicle enters electric vehicle mode or engine idle stop mode;
If vehicle is in described electric vehicle mode or engine idle stop mode, then determine whether coolant temperature exceeds predetermined value;
If coolant temperature exceeds predetermined temperature value, then drive Motor driven water pump;
If coolant temperature is lower than predetermined temperature value, then close described Motor driven water pump; And
When described Motor driven water pump work, if the speed of a motor vehicle is greater than predetermined vehicle speed value, then change the actuating speed of described Motor driven water pump according to the speed of a motor vehicle.
5. Motor driven water pump control method according to claim 4, if wherein need heating device work in described electric vehicle mode or engine idle stop mode, then described Motor driven water pump is actuated to circulating coolant.
6. a Motor driven water pump control setup for hybrid electric vehicle, comprising:
Calorstat, determines the circulating path of cooling system conditioner according to the temperature of the cooling system conditioner of discharging from driving engine;
Radiator, distributes the heat absorbed from cooling system conditioner;
Cooling fan, is arranged in the side of described radiator to dry;
Motor driven water pump, is placed between described driving engine and described calorstat with circulating coolant; And
Control part, changes the switching mode of described Motor driven water pump according to the service load of described cooling fan,
If wherein coolant temperature is lower than predetermined temperature value, then described control part makes Motor driven water pump shut-down operation until first time operates cooling fan after firing.
7. Motor driven water pump control setup according to claim 6, wherein said control part is monitored to the environment of driving engine and is driven the data that situation is relevant, if mistake detected from monitor data, then enters limp-home mode to operate described Motor driven water pump.
8. Motor driven water pump control setup according to claim 6, if wherein cooling fan described in low-speed handing, then described control part drives described Motor driven water pump with second speed.
9. Motor driven water pump control setup according to claim 8, if wherein described cooling fan is closed, then described control part is to drive described Motor driven water pump lower than the First Speed of described second speed.
10. Motor driven water pump control setup according to claim 6, if wherein cooling fan described in high-speed driving, then described control part is to be greater than the third speed of second speed to drive described Motor driven water pump.
11. Motor driven water pump control setups according to claim 10, if wherein the speed of a motor vehicle exceeds predetermined vehicle speed value, then described control part increases the actuating speed of described Motor driven water pump according to the factor value of the speed of a motor vehicle.
The Motor driven water pump control method of 12. 1 kinds of hybrid electric vehicles, comprising:
When coolant temperature is lower than predetermined temperature value, suspend the operation of Motor driven water pump, until cooling fan work; And
When cooling fan works, control the actuating speed of Motor driven water pump according to the load of cooling fan.
13. Motor driven water pump control methods according to claim 12, wherein with described in driven at low speed during cooling fan, described Motor driven water pump is driven with second speed.
14. Motor driven water pump control methods according to claim 13, if wherein determine that cooling fan stops again, then to drive described Motor driven water pump lower than the First Speed of described second speed.
15. Motor driven water pump control methods according to claim 13, if wherein determine that cooling fan is with high speed operation, then to be greater than the third speed of described second speed to drive described Motor driven water pump, and determine that driving engine is in high load condition based on the coolant flow value determined.
16. Motor driven water pump control methods according to claim 15, if wherein described cooling fan is by high-speed driving, the speed of a motor vehicle exceeds predetermined value, the factor value that then application is corresponding to the speed of a motor vehicle, to be greater than the speed of third speed to drive Motor driven water pump, and determine that described driving engine is at a high speed and high load condition.
17. Motor driven water pump control methods according to claim 12, wherein under the high speed of driving engine or the state of high capacity, the actuating speed of described Motor driven water pump changes pro rata according to the speed of a motor vehicle.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0028562 | 2010-03-30 | ||
| KR1020100028562A KR20110109023A (en) | 2010-03-30 | 2010-03-30 | Apparatus for control electric water pump of hybrid vehicle and method thereof |
| KR10-2010-0040328 | 2010-04-29 | ||
| KR1020100040328A KR101241206B1 (en) | 2010-04-29 | 2010-04-29 | Apparatus for control electric water pump of hybrid vehicle and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102205843A CN102205843A (en) | 2011-10-05 |
| CN102205843B true CN102205843B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010563109.8A Expired - Fee Related CN102205843B (en) | 2010-03-30 | 2010-11-29 | For controlling the devices and methods therefor of electric water pump of hybrid vehicle |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20110246007A1 (en) |
| CN (1) | CN102205843B (en) |
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| CN105799493A (en) * | 2014-12-29 | 2016-07-27 | 上海大郡动力控制技术有限公司 | A battery electric vehicle water pump control method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102205843A (en) | 2011-10-05 |
| US20110246007A1 (en) | 2011-10-06 |
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