CN103770600B - Vehicle - Google Patents
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- CN103770600B CN103770600B CN201310492045.0A CN201310492045A CN103770600B CN 103770600 B CN103770600 B CN 103770600B CN 201310492045 A CN201310492045 A CN 201310492045A CN 103770600 B CN103770600 B CN 103770600B
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- cooling agent
- heat exchanger
- vehicle
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- 239000002826 coolant Substances 0.000 claims abstract description 104
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 230000004044 response Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 230000001809 detectable Effects 0.000 abstract 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 21
- 230000005611 electricity Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 241000709691 Enterovirus E Species 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001568 sexual Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007374 clinical diagnostic method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 210000000056 organs Anatomy 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 102100009933 PRND Human genes 0.000 description 1
- 101700057804 PRND Proteins 0.000 description 1
- 108060007803 SPC25 Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 101700061660 calL Proteins 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000031070 response to heat Effects 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
Abstract
A kind of vehicle is disclosed, the vehicle has the multiple coolant paths selected by controlling triple valve, wherein, the position of valve is detectable.Disclose a kind of method for the position of detection valve during fault condition.The vehicle has heating system, and heating system includes the first coolant circuit with heating source, water pump and heater core.Heating system also has the second coolant circuit, and the second coolant circuit in addition to including the element of the first coolant circuit except further including engine and the second water pump.Temperature sensor is located in each coolant circuit.Triple valve failure is detected in response to the behavior of the state of the position and heating source of triple valve by monitoring temperature sensor.
Description
Technical field
The present invention relates to a kind of vehicle more particularly to a kind of vehicles that can carry out heater core isolating valve position detection.
Background technology
In order to provide passenger compartment comfort, vehicle has the ability that passenger compartment is heated or cooled.Traditional vehicle
Use unique heat source of the waste heat from engine as heating passenger compartment.With pure electric vehicle（BEV）Appearance, just not
Any further available waste heat, so as to need to heat the other methods of passenger compartment.Electric heater can be used to preheat in typical BEV
Passenger compartment.Similarly, hybrid electric vehicle（HEV）Different problems are met with, this is because engine may not be frequent
It operates and generates waste heat to be used for heating system.Plug-in hybrid electric vehicle（PHEV）Due in engine in big portion
It operates in the case of being closed in time segment and exacerbates this problem.In order to provide optimal fuel economy benefit, it is expected
Passenger compartment is heated in the case of engine exhaust heat need not be relied only on.
In heating system, can have for changing the valve flowed by the cooling agent of system.These valves can pass through control
Device is activated to desired position.In the normal operation period, valve actually will be in as enabling position set by controller.
Under fault condition, valve can be at a certain position rather than in the position that controller has been selected.It is expected to detect these feelings
Condition is operated by ensuring system in a manner of consistent with the physical location of valve.
The content of the invention
In illustrative embodiment, hybrid electric vehicle includes engine, electric heater, heater core and valve, the valve
Being arranged to makes coolant flow through at least one in engine and electric heater.Show that sexual system further includes controller, it is described
Controller is configured in response to heat request and carrys out control valve, so that coolant flow is through engine and heater core.Illustrative system
System is with the ability for making the heater circuit operation independently of engine-radiator loop.Show that although sexual system can provide one
A little system component failures also provide the steady ability of heating.Show that sexual system may also provide to improve heating passenger compartment
The operation mode of efficiency.For example, the failure of the diagnosable valve of system, and system can be made to be carried out in a manner of the position consistency with valve
Operation.
A kind of vehicle is disclosed, the vehicle includes engine, heat exchanger or heater core, electric heater and valve system
Cooling agent is optionally directed to heat exchanger by system, valve system from engine.Valve system can be based on inflow heat exchanger
The temperature of cooling agent and the temperature of the cooling agent flowed out from engine detect the position of valve.It opens and starts in electric heater
When organ closes, the cooling agent from engine and heat exchanger fluid are separated and inflow heat exchanger when valve is arranged to
The Wen Sheng of cooling agent when being more than the temperature of the cooling agent flowed out from engine and rising, valve system can detect the operation of correct valve.When
The Wen Sheng of the cooling agent of inflow heat exchanger is more than first threshold and the Wen Sheng of the cooling agent from engine outflow is less than second
During threshold value, correct valve position can detect.When order valve with heat exchanger fluid separates the cooling agent from engine
When, cooling agent is actually but directed to heat exchanger by valve from engine, and valve system can detect out of order valve operation.Work as stream
Enter the temperature for the cooling agent that the rise of the temperature of the cooling agent of heat exchanger at any time is flowed out less than first threshold or from engine
When the rise of degree at any time is more than second threshold, abort situation can detect.System, which is also configured to generate, represents that valve is in
The output of abort situation simultaneously stores diagnostic code.
In another embodiment, disclose a kind of vehicle, the vehicle include engine, heat exchanger or heater core,
Cooling agent is optionally directed to electric heater by electric heater and valve system, valve system from engine.Valve system being capable of base
In the temperature of the cooling agent flowed out from electric heater change with time and from engine flow out cooling agent temperature at any time
Variation detect valve position.Opened in electric heater and during tail-off, when valve is arranged to will be from the cold of engine
But the temperature change for the cooling agent that agent and electric heater fluidly separate and flow out from electric heater, which is more than from engine, flows out
Cooling agent temperature change when, valve system can detect the operation of correct valve.When the temperature of the cooling agent flowed out from electric heater
When the temperature change of cooling agent of the degree variation more than first threshold and from engine outflow is less than second threshold, it can detect just
True valve position.When order valve fluidly separates the cooling agent from engine and electric heater, valve actually but will be cold
But agent is directed to electric heater from engine, then valve system can detect out of order valve operation.When what is flowed out from electric heater
When the temperature change of cooling agent of the temperature change of cooling agent less than first threshold or from engine outflow is more than second threshold,
It can detect abort situation.System, which is also configured to generate, represents that valve is in the output of abort situation and stores diagnostic code.
A kind of vehicle is disclosed, the vehicle includes engine, the heat exchanger for being configured to heating cabin, is configured to
Heating is used for the electric heater and valve system of the cooling agent of heat exchanger, and the valve system includes valve, and valve is configured to select
Property cooling agent is directed to electric heater from engine, and the temperature change based on the cooling agent flowed out from engine with from electricity
The relation of the temperature change of the cooling agent of heater outflow detects valve position.
Valve system is configured to：It receives to be arranged to start by valve in electric heater unlatching and tail-off
After the order that machine and electric heater fluidly separate, the temperature change of the cooling agent in response to being flowed out from electric heater be more than from
The temperature change of the cooling agent of engine outflow, detects that cooling agent is not directed to the position of electric heater by valve from engine.
The temperature change of the cooling agent flowed out from thermoelectric heater is more than first threshold, and the cooling agent flowed out from engine
Temperature change be less than second threshold.
Valve system is configured to：It receives to be arranged to start by valve in electric heater unlatching and tail-off
After the order that machine and electric heater fluidly separate, in response to the temperature change of cooling agent that is flowed out from electric heater and from hair
Cooling agent is directed to the abort situation of electric heater by the temperature change of the cooling agent of motivation outflow, detection valve from engine.
Disclose a kind of method for detecting valve position.It the described method comprises the following steps：Enable pump；Order valve guides
The heated source of coolant flow, and heating source with engine fluid is separated；Enable heating source；In response, when starting organ
When closing, based on the variation with the relevant coolant temperature of heating source and the variation with the relevant coolant temperature of engine, output
Indicate the signal of valve position.In one embodiment, before test position, engine can close predetermined hold-time section.When
Variation of the variation less than first threshold or with the relevant coolant temperature of engine with the relevant coolant temperature of heating source
During more than second threshold, the abort situation that cooling agent is directed to heating source in valve by valve position from engine can detect.When
When detecting abort situation, the output for representing failure can be generated.When the variation with the relevant coolant temperature of heating source is more than the
One threshold value or when being less than second threshold with the variation of the relevant coolant temperature of engine, it may be determined that valve position will not in valve
Cooling agent is directed to the correct position of heating source from engine.It is electric when having been detected by valve in another possible embodiment
During failure, the detection of valve position can perform.
Description of the drawings
Fig. 1 is the diagrammatic representation of vehicle；
Fig. 2 is that the schematic diagram for the vehicle assembly for implementing climate control strategy represents；
Fig. 3 is the flow chart of valve position diagnosis.
Specific embodiment
As requested, specific embodiments of the present invention are disclosed；It should be appreciated, however, that disclosed embodiment is only
The example of the present invention, these examples can be used various and optional form and implement.Attached drawing is not necessarily drawn to scale；It may
Exaggerate or minimize some features, to show the details of specific component.Therefore, concrete structure disclosed herein and functional details
Should not be construed as limited to, and as just for instruct those skilled in the art in various ways using the present invention generation
Table basis.
Vehicle can have two or more propulsion devices, such as the first propulsion device and the second propulsion device.For example, such as
Known in the art, vehicle can have engine and motor, fuel cell and other of motor or propulsion device group
It closes.Engine can be compression-ignited or spark ignition type internal combustion engine or external-burning engine, and be expected these engines
Various fuel can be used.In one example, vehicle is hybrid electric vehicle（HEV）, in addition vehicle, which can have, is connected to outside
The ability of power grid, such as plug-in hybrid electric vehicle（PHEV）.It is constructed in the accompanying drawings using the PHEV, and uses and be somebody's turn to do
PHEV constructs to describe following various embodiments；It is contemplated, however, that using have it is commonly known in the art its
The vehicle of the combination of his propulsion device or propulsion device implements various embodiments.
Plug-in hybrid electric vehicle（PHEV）Include existing hybrid electric vehicle（HEV）Technology is prolonged
It stretches, wherein, battery compensation explosive motor and at least one motor, further to obtain, mileage increases and vehicle discharge is reduced.
PHEV is using the big battery of capacity of Capacity Ratio standard hybrid electric vehicle, and PHEV increases battery is recharged from power grid
Ability, the power grid supply electric energy to the electrical socket at charging station.This is in electric drive mode and hydrocarbon/electricity combined drive
Overall vehicle system running efficiency is further improved in dynamic model formula.
Fig. 1 shows the power drive system construction and control system of HEV10.Dynamic branch formula hybrid electric vehicle
10 can be parallel hybrid electric vehicle.HEV constructions being given for example only property purpose as shown, and it is not intended to limit this
Open, the disclosure can be applied to HEV, PHEV or the other kinds of vehicle with any appropriate structuring.In this power transmission
In the construction of system, there are two power sources 12,14 for being connected to power drive system, the two power sources are using planet
The combination of engine and generator subsystems that gear set is connected to each other and power drive system（Motor, generator and battery
Subsystem）.Battery subsystem is the energy storage system of generator and motor.It is defeated that change alternator speed will change engine
Shunting of the power gone out between power path and mechanical path.Unlike conventional truck, with dynamic branch formula power
In the vehicle 10 of transmission system, engine 16 needs generator torque（It is generated by control of engine speed）Or generator brake
Torque, to pass through both power path and mechanical path（Shunt mode）Or pass through all mechanical paths（Parallel schema）By its
Output power is transferred to power drive system, so as to carry out forward travel.During the operating using the second power source 14, motor
20 obtain electric energy from battery 26 and provide propulsion independently of engine 16, to be advanced and reverse motion.This operational mode
Formula is referred to as " electric drive " or electric-only mode or EV patterns.
Unlike traditional power drive system, the operation of this dynamic branch formula power drive system integrates two
Power source 12,14 seamlessly works together, not exceed system limitation（Such as, battery limits）In the case of meet drive
Member's demand optimizes the gross efficiency and overall performance of power drive system simultaneously.It needs to carry out coordination control between two power sources.
As shown in fig. 1, there is the stagewise Vehicular system control for performing and coordinating control in this dynamic branch formula power drive system
Device processed（VSC）28.Normal condition is in power drive system（There is no subsystem/component faults）In the case of, VSC decipherings are driven
The person's of sailing demand（For example, PRND and acceleration or deceleration demand）, it is then based on operator demand and power drive system limitation comes really
Determine 24 torque command of wheel.In addition, VSC28 determines when each power source needs to provide torque and need that how many torque provided
To meet operator torque demands and reach the operation point of engine（Torque and rotating speed）.
In the construction of PHEV vehicles 10, battery 26 can be additionally carried out recharging using socket 32（It is shown in dotted line）,
The socket 32 is connected to power grid or other external power supplies, and can be connected to battery 26 by battery charger/converter 30.
Vehicle 10 can be with electric model（EV patterns）Operating, under the EV patterns, battery 26 provides operating to motor 20
The institute of vehicle 10 is dynamic.Except save fuel benefit in addition to, with EV mode operations can by lower noise and preferably
Maneuverability（For example, more stably electric operating, lower noise, vibration and sound vibration roughness（NVH）And response faster）
To improve driver comfort.With EV mode operations can also due to the zero-emission of vehicle in this mode and it is environmentally friendly.
Plug-in hybrid electric vehicle（PHEV）Enjoy the characteristic of both ICE and BEV.PHEV can have only by electricity
Machine 20（Electric energy is supplied by battery pack 26）Certain section of drive range promoted is provided.Once the electricity of battery pack 26 has been consumed to
Some is horizontal, just starts engine 16.Engine 16 can provide the power for promoting vehicle and battery pack 26 is recharged.
Under electric-only mode, engine 16 will not operate.Because engine 16 is simultaneously inoperative, will not have and can be used in heating
The engine exhaust heat of passenger compartment generates.The heating that PHEV may be in response to passenger needs and starts engine 16.However, this can be interfered
Pure electric vehicle operates, and may influence fuel economy and discharge.
PHEV can be with different mode operations.In one mode, PHEV can be operated with charge-sustaining mode.Electricity
Holding pattern is the pattern that the state-of-charge of battery pack 26 is maintained in particular range.This can be driven by running engine 16
Dynamic generator 18 is so as to carry out battery pack to recharge realization.In another mode, PHEV can be operated with charge-depleting mode.
Charge-depleting mode is that battery pack 26 is allowed to be discharged to low-level pattern.When motor 20 utilizes the electric energy from battery pack 26
Come when providing vehicle propulsion, this can be electric-only mode.
A kind of system that passenger compartment heating can be provided for PHEV is shown in FIG. 2.This system provides two coolings
Agent heating source.The system can utilize the heat from engine 40 to heat cooling agent as in traditional ICE vehicles.It should
System can also provide heat as in BEV systems through electric heater 42.Allow with multiple heat sources in normal operating operating mode
Period is with flexibility and during fault mode with some redundancies.The system allows the cooling agent from different heat sources
Flow through heater core.Heater core isolating valve（HCIV）44 addition allows passenger compartment heating system to select the cooling agent heated
Source.Vehicular system controls（VSC）Module（28 in Fig. 1）It can control the operation of the system.VSC（28 in Fig. 1）It can be based on
The states of various components determines heating mode in the heat request and heating system of passenger.In order to ensure steady operation, VSC
（28 in Fig. 1）It can attempt to work in the case of control element missing or failure by selecting appropriate operation mode.
HCIV44 can be used for enabling different coolant circuits.At a position, HCIV44 forms pure electrical heating circuit
66.At the position, cooling agent is by HCIV44, auxiliary pump 46, electric heater 42 and heater core 50（It is not limited to this
Specific order）It is flowed in the circuit of composition.In another position, HCIV44 forms the combined heated circuit by engine 40
68.In combined heated circuit, coolant flow adds through HCIV44, engine 40, water pump 54, thermostat 58, auxiliary pump 46, electricity
Hot device 42 and heater core 50, but it is not limited to this specific order.Also there are individual engine circuit, in the engine
In circuit, coolant flow is through engine 40, water pump 54 and radiator 56, but not necessarily in this order.According to operation mode, it is
Cooling agent is made to flow in systems, it is necessary to enable one or two in pump 46 and 54.
The system can also have auxiliary pump 46, to force coolant flow through the system.It may include that coolant temperature senses
Device 48, to measure the temperature of the cooling agent into heater core 50.The heated device core 50 of coolant flow, then this cause heat from
Cooling agent is delivered to the air into passenger compartment.It can be used wind turbine 52 that heat is made to be transferred to from the cooling agent in heater core 50
It flows through heater 50 and enters the air in passenger compartment.
The system can also have water pump 54, to force coolant flow through engine 40.Water pump 54 can be mechanically driven or electricity
Driving.Under some patterns, water pump 54 can also force the heated device core 50 of coolant flow.The system can also have radiator 56,
So that the heat produced in cooling agent.The system can also have thermostat 58, to control cooling agent in radiator 56 and engine 40
Between flowing.The system can also have except gas cylinder（degas bottle）60, cooling agent storage should can be used as except gas cylinder 60,
Air can be removed from cooling agent, and release is provided.Cooling system may also include exhaust gas recycling（EGR）62 systems, the EGR62 make
The portion of engine flows back to cylinder again.In addition, the system also has engine coolant temperature sensor 64, with
It determines the temperature of the cooling agent flowed out from engine 40 or can estimate or infer from engine 40 by other measuring methods
The temperature of the engine coolant of outflow.
System has the ability for changing in response to desired coolant heating source and being flowed by the cooling agent of system.It is based on
The position of HCIV44, cooling agent can flow in different circuits.It can be in specific time according to the heating/cooling need in each circuit
It asks and independent coolant temperature is realized in each circuit.Heater core isolating valve,（HCIV）44 addition makes it possible to adjust
The flow of cooling agent.HCIV44 can be the electric switching valve for changing the coolant flow for flowing through the system.HCIV44 can be three
Port valve, the triple valve is based on each port for enabling signal and a port being made to be used to selectively connect in other two ports.
HCIV44 may be such that coolant circuit is combined into the coolant circuit of a bigger.HCIV44 can be cut in such a manner
It changes：Cooling agent is allowed to flow to pure electrical heating circuit by HCIV44 from engine coolant circuit.
Controller can be used for enabling HCIV44.According to the design of HCIV44, can have or can be not on HCIV44's
The feedback of physical location.Desired control device knows that HCIV44 is in correct position in which can determine.It can be by during operation
The behavior of observation system determines the position of HCIV44.
The indirect method for determining the position of HCIV44 can be that existing feedback is used under known operating condition.The party
Method can first determine that whether these conditions are correct for HCIV location determinations.System can first by estimate entry criteria come
Determine whether these conditions are adapted for determining position.Will estimative entry criteria can be following condition：Engine 40
Inoperative, engine 40 has been switched off and continue for the required shortest time, the temperature of ambient enviroment is more than minimum value, wind turbine
52 rotating speed less than threshold value, temperature sensor is suitably operated, auxiliary pump 46 is activated, electric heater 42 be activated with
Heating cooling agent and HCIV44 have been activated to pure electrical heating circuit.Other permit standards may include to detect HCIV44's
Control line is opened a way or shorted to earth.According to specific HCIV44, can only when having been detected by fault ability operational diagnostics.
Other entry criteria can be used for it is determined that when performing diagnosis.When condition is correct, sustainably operational diagnostics.It is if discontented
Sufficient entry criteria, then system can continue estimate permit standard until meeting entry criteria.
Once having met entry criteria, these conditions can be checked, to determine the position of HCIV44.Controller may be such that
The coolant temperature sensor 64 at temperature sensor 48 and engine export in pure electrical heating circuit measures.The logic
Any heating system with independent heating circuit can be extended to, wherein, which has different add
Heat source.Can storing initial temperature value, subsequently to use.Controller can be verified to ensure that entry criteria is still met.Such as
Fruit entry criteria is unsatisfactory for, then system can reset routine.If entry criteria meets within the adjustable period, temperature sensing
Device 48 and 64 can measure end value again.After measurement temperature value, initial value and end value are may compare, to determine HCIV44
Position.When the difference between final temperature measurement result and initial temperature measurement result is more than adjustable threshold value, in cooling agent
Occurs temperature rise in circuit.If the difference between final temperature measurement result and initial temperature measurement result is less than adjustable threshold
It is worth, then temperature held stationary.Temperature rise is still smoothly determined that temperature change may also allow for allow in adjustable value
Deviation predetermined percentage in the range of.
Then previous discussion calculates the temperature in that time using the temperature survey carried out in two different times
Difference.Optionally, the two temperature sensor values can be integrated in time（integrate）.In specific time interval
Afterwards, with temperature can be rise or steady by integrated value compared with adjustable threshold value.
Entry criteria can be constructed, is raised with preferred temperature in pure electrical heating circuit 66, while it is expected engine coolant
The temperature change in exit is minimum.When meeting entry criteria, the behavior of considerable testing temperature, whether to determine desired behavior
Occur.If desired behavior occurs, it can confirm that valve is located at correct position.When enabling pure electrical heating circuit 66 and open
During electric heater 42, it is expected that the temperature 48 in pure electrical heating circuit 66 raises at any time.When engine 40 is inoperative, it is expected
Engine coolant exports the temperature held stationary at 64 or slowly changes at any time.If observing these conditions,
Deducibility HCIV44 is located at the correct position for pure electrical heating circuit.
If temperature rise and the temperature held stationary in engine coolant exit or slow in pure electrical heating circuit
Ground changes, then controller deducibility HCIV44 is located in pure electrical heating circuit 66.Other any measuring conditions can be shown that
HCIV44 is not located at correct position.Controller can surmount control（override）The position, to represent the physical location of HCIV44.
Further control action can utilize the position of predicted HCIV44.
Fig. 3 shows a kind of flow chart of the embodiment of definite HCIV positions.The specific embodiment is since step 80, just
Beginningization counter and variable.Then entry criteria is estimated as previously described at step 82.When meeting entry criteria,
The initial temperature readings of each temperature sensor are stored at step 84（ECT0And ECT20）.If being unsatisfactory for entry criteria,
System returns to initialization step 80.If entry criteria still has at step 86, followed at step 88 for control
Each iteration of ring increases counter.When counter is more than threshold value at step 90, then each temperature is stored in step 92
The final temperature reading of sensor（ECTfAnd ECT2f）.Counter can represent the passage of expected time.Then it is true at step 94
The temperature change of fixed each temperature sensor.Next, the behavior for each temperature sensor at step 96 is determined.
If the temperature change in pure electrical heating circuit is more than calibration value（Cal2）And the temperature change in engine coolant exit is less than
Another calibration value（Cal1）, then infer that HCIV positions are in the correct position in pure electrical heating circuit positions at step 100.Its
His any temperature variation result of the comparison means that HCIV may have occurred failure and be likely to be at combined heated circuit position
It puts（Step 98）.Note that temperature change can be also compared, to determine whether the temperature change is located at connecing for adjustable value
In the range of the predetermined percentage for the deviation received.
If the position inferred is not enabling position, controller can set failure code and store diagnostic code.Control
Inferred position also can be used in device processed, to perform appropriate call for heat based on the position at HCIV.
In this specific embodiment, the default location not being activated is in combined heated circuit.Assuming that control line
Apply electric power and enable valve, then can short circuit and open circuit be detected by monitoring and controlling line.
Although described above is exemplary embodiments, it is not intended to these embodiments and describes being possible to for the present invention
Form.On the contrary, used word is descriptive words and non-limiting in the description, it should be appreciated that is not departing from this public affairs
In the case of the spirit and scope opened, various changes can be carried out.In addition, the feature of multiple embodiments can be combined to form the present invention
Further embodiment.
Claims (5)
1. a kind of vehicle, including：
Engine；
Heat exchanger is configured to the cabin of heating vehicle；
Electric heater is configured to cooling agent of the heating for heat exchanger；
Valve system including valve, is configured to that cooling agent selectively is directed to heat exchanger from engine,
It is characterized in that, the valve system is further configured to：Receiving for being arranged to valve by engine and heat exchanger
After the order of fluid partition and electric heater is opened and during tail-off, in response to the cooling agent of inflow heat exchanger
Wen Sheng is more than the Wen Sheng of the cooling agent flowed out from engine, detects that cooling agent is not directed to by the position of valve for valve from engine
The position of heat exchanger.
2. vehicle according to claim 1, wherein, the Wen Sheng of the cooling agent of inflow heat exchanger is more than first threshold, and
The Wen Sheng of the cooling agent flowed out from engine is less than second threshold.
3. vehicle according to claim 1, wherein, valve system is further configured to：Receive for by valve be arranged to by
After the order separated to engine and heat exchanger fluid and electric heater is opened and during tail-off, in response to flowing into
The Wen Sheng of the Wen Sheng of the cooling agent of heat exchanger and the cooling agent flowed out from engine, detection valve guide cooling agent from engine
To the abort situation of heat exchanger.
4. vehicle according to claim 3, wherein, if the Wen Sheng of the cooling agent of inflow heat exchanger is less than first threshold
Or the Wen Sheng of the cooling agent from engine outflow is more than second threshold, then detects the abort situation.
5. vehicle according to claim 3, wherein, valve system, which is further configured to generate, represents that valve is in the defeated of abort situation
Go out.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261716077P | 2012-10-19 | 2012-10-19 | |
| US13/787,900 | 2013-03-07 | ||
| US13/787,900 US10207567B2 (en) | 2012-10-19 | 2013-03-07 | Heater core isolation valve position detection |
| US61/716,077 | 2013-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103770600A CN103770600A (en) | 2014-05-07 |
| CN103770600B true CN103770600B (en) | 2018-06-01 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182445B1 (en) * | 1999-02-08 | 2001-02-06 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust switch-over valve malfunction detection system of internal combustion engine |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182445B1 (en) * | 1999-02-08 | 2001-02-06 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust switch-over valve malfunction detection system of internal combustion engine |
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