CN109141887A - The test macro and test method of engine heat management performance - Google Patents
The test macro and test method of engine heat management performance Download PDFInfo
- Publication number
- CN109141887A CN109141887A CN201710509589.1A CN201710509589A CN109141887A CN 109141887 A CN109141887 A CN 109141887A CN 201710509589 A CN201710509589 A CN 201710509589A CN 109141887 A CN109141887 A CN 109141887A
- Authority
- CN
- China
- Prior art keywords
- engine
- flowmeter
- engine assembly
- coolant
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
Abstract
This disclosure relates to a kind of test macro and test method of engine heat management performance.The test macro is in addition to including existing engine dynamometer, it further include temperature sensor and flowmeter, by laying temperature sensor and flowmeter on engine assembly, corresponding temperature data and data on flows can be measured, in conjunction with the data that engine dynamometer measures, engine radiating amount is obtained.The measurement to engine radiating amount is realized, provides design considerations for the design of engine thermal management system.
Description
Technical field
This disclosure relates to vehicular field, and in particular, to a kind of test macro of engine heat management performance and test side
Method.
Background technique
The purpose of engine thermal management is: no matter which kind of operating condition engine is in, and makes its work in optimum temperature range
It is interior.In order to preferably carry out engine thermal management, need to carry out engine heat management performance test.Engine heat management performance is surveyed
Examination specifically includes that engine radiating measures examination, the test of booster heat dissipation capacity, coolant rate test.
Currently, the test macro and test method that do not there are temporarily the relevant technologies to propose engine heat management performance, only basis
Experience speculates engine heat management performance, thus can not accurately determine engine heat management performance, leads to engine thermal management
The design of system is unreasonable.
Summary of the invention
Purpose of this disclosure is to provide the test macros and test method of a kind of engine heat management performance, accurately to survey
Spreadsheet engine heat management performance provides foundation for the design of engine thermal management system.
To achieve the goals above, the disclosure provides a kind of test macro of engine heat management performance, comprising:
Engine radiating measurement circuit, comprising: engine assembly, engine dynamometer, the first temperature sensor T1,
Flow meters M1And second temperature sensor T2, wherein the engine assembly is connect with the engine dynamometer, described
Temperature sensor T1With the first flowmeter M1Series connection, the first temperature sensor T1With the first flowmeter M1It is all provided with
It sets at the coolant inlet of the engine assembly, the second temperature sensor T2The cold of the engine assembly is set
But liquid exit.
Optionally, the test macro further include:
Rack intercooler heat dissipation measurement circuit, comprising: the engine assembly, engine performance test stand frame, electronics
Control unit, third temperature sensor T3, the 4th temperature sensor T4, the engine assembly is arranged in the engine performance
On test-bed, the engine assembly is connect with the electronic control unit, is arranged on the engine performance test stand frame
There are rack intercooler, the third temperature sensor T3, the rack intercooler, the 4th temperature sensor T4It is sequentially connected.
Optionally, the engine assembly includes: water pump, block jacket, cylinder head jacket, heater cores, booster
Water jacket, oil cooler, thermostat, wherein the aperture of the thermostat is standard-sized sheet；
Second flowmeter M is provided at the cooling liquid outlet of the oil cooler2, wherein the water pump, the cylinder
Body water jacket, the oil cooler and the second flowmeter M2It is sequentially connected, composition coolant rate first measures circuit；
Third flowmeter M is provided at the cooling liquid outlet of the booster water jacket3, wherein the water pump, the cylinder
Body water jacket, the booster water jacket and the third flowmeter M3It is sequentially connected, composition coolant rate second measures circuit；
The 4th flowmeter M is provided at the coolant inlet of the heater cores4, wherein the water pump, the cylinder block
Water jacket, the cylinder head jacket, the 4th flowmeter M4And the heater cores are sequentially connected, composition coolant rate the
Three measurement circuits.
Optionally, the test macro further include:
Vehicle radiator and vehicle oil cooler；
The 5th flowmeter M is provided at the coolant inlet of the vehicle radiator5, wherein the water pump, the cylinder
Body water jacket, the cylinder head jacket, the 5th flowmeter M5, the vehicle radiator and the thermostat be sequentially connected,
It forms coolant rate the 4th and measures circuit；
The 6th flowmeter M is provided at the coolant inlet of the vehicle oil cooler6, wherein the water pump, the cylinder
Body water jacket, the cylinder head jacket, the vehicle radiator, the vehicle oil cooler and the thermostat are sequentially connected, group
Circuit is measured at coolant rate the 5th.
Optionally, further includes:
First pressure sensor P1, the first pressure sensor P1The coolant inlet of the engine assembly is set
Place；
Second pressure sensor P2, the second pressure sensor P2The cooling liquid outlet of the engine assembly is set
Place.
The embodiment of the present disclosure also provides a kind of test method of engine heat management performance, comprising:
Engine dynamometer and electronic control unit are connected with engine assembly respectively, and by the engine assembly
It is arranged on engine performance test stand frame；
According to testing requirement, corresponding test equipment is laid, the testing requirement is that engine radiating measurement tries, in rack
The test of cooler heat dissipation capacity or coolant rate test；
In the case where the engine assembly is in different operating conditions, the measured value of the test equipment is measured；
The measured value of the measuring device is arranged and analyzed.
According to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that engine radiating measures examination, by the first temperature sensor T1It is arranged described
At the coolant inlet of engine assembly, to measure the temperature of the coolant inlet of the engine assembly, and, by the second temperature
Spend sensor T2It is arranged at the cooling liquid outlet of the engine assembly, to measure the cooling liquid outlet of the engine assembly
Temperature, and, by first flowmeter M1It is arranged at the coolant inlet of the engine assembly, the hair is flowed into measurement
The flow of the coolant liquid of motivation assembly.
Optionally, according to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that rack intercooler heat dissipation capacity is tested, on the engine performance test stand frame
It is provided with rack intercooler, by third temperature sensor T3It is arranged at the compressed air inlet of the rack intercooler, to survey
The temperature of the compressed air inlet of the rack intercooler is measured, and, by the 4th temperature sensor T4It is arranged in the rack
At the compressed air outlet of cooler, to measure the temperature of the compressed air outlet of the rack intercooler.
Optionally, according to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that coolant rate is tested, the engine assembly includes: water pump, cylinder block
Water jacket, cylinder head jacket, heater cores, booster water jacket, oil cooler, thermostat, wherein the aperture of the thermostat is
Standard-sized sheet；
By second flowmeter M2It is arranged at the cooling liquid outlet of the oil cooler, it is cold to flow out the machine oil with measurement
But the flow of the coolant liquid of device；
By third flowmeter M3It is arranged at the cooling liquid outlet of the booster water jacket, the booster is flowed out with measurement
The flow of the coolant liquid of water jacket；
By the 4th flowmeter M4It is arranged at the coolant inlet of the heater cores, the heater cores is flowed into measurement
Coolant liquid flow；
By the 5th flowmeter M5It is arranged at the coolant inlet of vehicle radiator, the vehicle radiator is flowed into measurement
Coolant liquid flow；
By the 6th flowmeter M6It is arranged at the coolant inlet of vehicle oil cooler, the vehicle oil cooler is flowed into measurement
Coolant liquid flow.
Optionally, in the case where the engine assembly is in different operating conditions, the measured value of the test equipment is measured, comprising:
In the case where the engine assembly is initially in the first operating condition, detect whether the engine assembly reaches heat
Balance；
After the engine assembly is in first operating condition and reaches thermal balance preset duration, the test is measured
The measured value of equipment；
The engine assembly is switched to the second operating condition, second operating condition is different from first operating condition；
In the case where the engine assembly is in second operating condition, the measured value of the test equipment is measured.
Present disclose provides a kind of test macros of engine heat management performance.It includes existing start that the test macro, which is removed,
It further include temperature sensor and flowmeter outside machine dynamometer machine, by laying temperature sensor and flowmeter on engine assembly,
Corresponding temperature data and data on flows can be measured, in conjunction with the data that engine dynamometer measures, obtains engine radiating
Amount.The measurement to engine radiating amount is realized, provides design considerations for the design of engine thermal management system.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the schematic diagram of the test macro for the engine heat management performance that the embodiment of the present disclosure provides.
Fig. 2 is the schematic diagram in the engine radiating measurement circuit that the embodiment of the present disclosure provides.
Fig. 3 is the engine radiating amount MAP chart that the embodiment of the present disclosure provides.
Fig. 4 is engine radiating amount contrast schematic diagram at a temperature of the various inlet that the embodiment of the present disclosure provides.
Fig. 5 is thermal efficiency contrast schematic diagram at a temperature of the various inlet that the embodiment of the present disclosure provides.
Fig. 6 is thermic load rate contrast schematic diagram at a temperature of the various inlet that the embodiment of the present disclosure provides.
Fig. 7 is the schematic diagram in the rack intercooler heat dissipation measurement circuit that the embodiment of the present disclosure provides.
Fig. 8 is the schematic diagram for the coolant rate test loop that the embodiment of the present disclosure provides.
Fig. 9 is the data on flows contrast schematic diagram that each flow measurement obtains under the different rotating speeds that the embodiment of the present disclosure provides.
Figure 10 is a kind of flow chart of the test method of engine heat management performance of the embodiment of the present disclosure.
Description of symbols
The test macro of 1000- engine heat management performance, 100- engine radiating measurement circuit are cold in 200- rack
Device heat dissipation measurement circuit, 300- coolant rate measure circuit, 1- engine assembly, 2- engine dynamometer, 3- engine
Test bench for performance, 4- electronic control unit, 31- rack intercooler, 11- booster, 12- water pump, 13- block jacket, 14-
Cylinder head jacket, 15- heater cores, 16- booster water jacket, 17- oil cooler, 18- thermostat, 19- vehicle radiator,
20- vehicle oil cooler.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
For reasonable design engine thermal management system, the disclosure provides a kind of test macro of engine heat management performance
And test method.The test macro of the engine heat management performance provided first the disclosure is illustrated.
As shown in Figure 1, the test macro 1000 for the engine heat management performance that the disclosure provides includes: engine radiating amount
Measure circuit 100.Optionally, the test macro 1000 of engine heat management performance can also include: rack intercooler heat dissipation capacity
Measure at least one of circuit 200 and coolant rate measurement circuit 300.Wherein, engine radiating measurement circuit 100 is used
In measurement engine radiating amount；Rack intercooler heat dissipation measurement circuit 200 is for measuring 31 heat dissipation capacity of rack intercooler, rack
Intercooler 31 is arranged on engine performance test stand frame 3, and for cooling down compressed air, and compressed air is that engine is total
Air is compressed at the booster 11 in 1 and is formed, thus 31 heat dissipation capacity of rack intercooler is equivalent to booster 11 and exists
Quantity of heat production during being compressed to air；Coolant rate test loop 300 is for measuring coolant rate, according to cold
But the flow direction of liquid, coolant rate test loop 300 may include: that coolant rate first measures circuit, coolant rate the
Two measurement circuits, coolant rate third measurement circuit, coolant rate the 4th measures circuit and coolant rate the 5th is surveyed
Measure circuit.
Engine radiating measurement circuit 100 is illustrated below.
As shown in Fig. 2, engine radiating measurement circuit 100 includes: engine assembly 1, engine dynamometer 2, first
Temperature sensor T1, first flowmeter M1And second temperature sensor T2.Wherein, engine assembly 1 and engine dynamometer 2
Connection, temperature sensor T1With first flowmeter M1Series connection, the first temperature sensor T1With first flowmeter M1It is arranged at and starts
At the coolant inlet of machine assembly 1, second temperature sensor T2It is arranged at the cooling liquid outlet of engine assembly 1.In Fig. 2,
Coolant liquid constant temperature system is laid in first flowmeter M1With second temperature sensor T2Between, the temperature for controlling coolant liquid is protected
It holds constant.
When needing to measure engine radiating amount, Fig. 2 can be referred to, engine assembly 1 and engine dynamometer 2 are connected
It connects, and by the first temperature sensor T1With first flowmeter M1Series connection, then by the first temperature sensor T1With first flowmeter M1
It is arranged at the coolant inlet of engine assembly 1, by second temperature sensor T2The coolant liquid of engine assembly 1 is set
Exit.
Target operating condition can be any operating condition of engine assembly 1, and an operating condition is a revolving speed and a torque
Combination, the different rotating speeds of engine assembly 1 can be combined with different torques, form different operating conditions.Illustratively, engine is total
At 1 revolving speed may is that 1500r/min, 2000r/min, 2500r/min, 3000r/min, 3500r/min, 4000r/min,
4500r/min, 5000r/min or 5500r/min；The torque of engine assembly 1 may is that external characteristics torque * 20%, external characteristics
Torque * 40%, external characteristics torque * 60%, external characteristics torque * 80%, external characteristics torque * 100%.The revolving speed of engine assembly 1
The torque for being 1500r/min and engine assembly 1, which is the operating status of external characteristics torque * 20%, to be operating condition 1, and engine is total
It is the operating status of external characteristics torque * 40% can be operating condition that revolving speed at 1, which is the torque of 2000r/min and engine assembly 1,
2, the revolving speed of engine assembly 1 is that the torque of 2000r/min and engine assembly 1 is the operating status of external characteristics torque * 20%
It can be operating condition 3.
After engine assembly 1 operates under target operating condition, start to acquire following data: the first temperature sensor T1With
And second temperature sensor T2The temperature data measured respectively, first flowmeter M1The data on flows measured, engine dynamometer 2
Revolving speed, torque and the fuel consumption measured.
Optionally, in order to improve measurement accuracy, after engine assembly 1 operates under target operating condition, engine is detected
Whether assembly 1 keeps thermal balance and keeps thermally equilibrated duration, and when engine assembly 1 keeps thermally equilibrated lasting
It is long to be greater than scheduled duration and then start to acquire above-mentioned data.Wherein, scheduled duration be set according to measurement accuracy, such as:
Scheduled duration is 5 minutes；Thermal balance refers to that the amplitude of variation of the temperature at the coolant inlet of engine assembly 1 is less than default threshold
Value, such as: preset threshold is 1 DEG C.Illustratively, after engine assembly 1 operates under target operating condition, if engine assembly
The amplitude of variation of temperature in 5 minutes at 1 coolant inlet then starts to acquire above-mentioned data, otherwise continues to examine less than 1 DEG C
Survey whether engine assembly 1 keeps thermal balance and keep thermally equilibrated duration.
After data acquisition, engine radiating amount can be calculated according to formula 1, formula 1 is as follows:
Q=C* ρ * m1*(t1-t2)/(106* 60) formula 1
In formula 1, t1For the first temperature sensor T1The temperature data measured, t2For second temperature sensor T2It measures
Temperature data, m1For first flowmeter M1The data on flows measured, Q are engine radiating amount, and C is coolant liquid specific heat capacity, and ρ is cold
But liquid density.Optionally, ρ is density of the coolant liquid at 100 DEG C.
After calculating engine radiating amount according to formula 1, available engine radiating amount MAP chart shown in Fig. 3, figure
In 3, the unit of engine radiating amount is KW, and the unit of revolving speed is r/min, and the unit of torque is Nm.By Fig. 3 it can be concluded that with
Draw a conclusion:
1) under different rotating speeds and torque, engine radiating amount is different；
2) revolving speed is certain, and torque is bigger, and engine radiating amount is bigger；Torque is certain, and revolving speed is bigger, and engine radiating amount is got over
Greatly；
3) it is tested engine radiating amount and is up to 60KW.
It optionally, can also be by engine assembly 1 and electronic control unit when needing to measure engine radiating amount
The connection of (Electronic Control Unit, ECU) 2.In addition to the revolving speed measured by engine dynamometer 2, it can also pass through
ECU measures intake air temperature, then obtains engine radiating amount contrast schematic diagram at a temperature of various inlet shown in Fig. 4.In Fig. 4,
The unit of engine radiating amount is KW, and the unit of revolving speed is r/min.As shown in Figure 4, intake air temperature influences engine radiating amount；
Within the scope of general intake air temperature, intake air temperature is higher, and engine radiating amount is smaller.
It optionally,, can be in addition to it can calculate engine radiating amount according to formula 1 after data acquisition
The thermal efficiency is calculated according to formula 2, formula 2 is as follows:
The thermal efficiency=measured power/fuel burning heat formula 2
In formula 2, measured power=torque/9550 revolving speed *, fuel burning heat=fuel consumption * fuel oil calorific value, combustion
Oilconsumption is measured by engine dynamometer 2.
It, can also be by engine assembly 1 and electronic control unit after calculating the thermal efficiency according to formula 2
The connection of (Electronic Control Unit, ECU) 2.In addition to the revolving speed measured by engine dynamometer 2, it can also pass through
ECU measures intake air temperature, then obtains thermal efficiency contrast schematic diagram at a temperature of various inlet shown in fig. 5.In Fig. 5, revolving speed
Unit is r/min.As shown in Figure 5, intake air temperature has an impact to the thermal efficiency；Tested engine thermal efficiency is up to 30.2%.
It optionally,, can be in addition to it can calculate engine radiating amount according to formula 1 after data acquisition
According to 3 heat load calculation rate of formula, formula 3 is as follows:
Thermic load rate=engine radiating amount/fuel burning heat formula 3
In formula 3, fuel burning heat=fuel consumption * fuel oil calorific value, fuel consumption is to pass through Engine dynamometer
What machine 2 measured.
It, can also be by engine assembly 1 and electronic control unit after calculating the thermal efficiency according to formula 3
The connection of (Electronic Control Unit, ECU) 2.In addition to the revolving speed measured by engine dynamometer 2, it can also pass through
ECU measures intake air temperature, then obtains thermic load rate contrast schematic diagram at a temperature of various inlet shown in fig. 6.In Fig. 6, revolving speed
Unit be r/min.It will be appreciated from fig. 6 that thermic load rate is influenced smaller by intake air temperature, when revolving speed is 2000r/min, have certain
Difference, other operating conditions are of substantially equal；Thermic load rate is more stable after revolving speed is 2500r/min, between 7.5%-9%.
Optionally, in order to improve measurement accuracy, the equalized temperature of engine assembly 1 can be kept and maintain 100 DEG C with
On.
Rack intercooler heat dissipation measurement circuit 200 is illustrated below.
As shown in fig. 7, rack intercooler heat dissipation measurement circuit 200 includes: engine assembly 1, engine performance test
Rack 3, electronic control unit 4, third temperature sensor T3, the 4th temperature sensor T4.Wherein, engine assembly 1 is arranged in hair
On motivation test bench for performance 3, engine assembly 1 is connect with electronic control unit 4, is arranged on engine performance test stand frame 3
There are rack intercooler 31, third temperature sensor T3, rack intercooler 31, the 4th temperature sensor T4It is sequentially connected.Engine is total
It include booster 11 and motor intake manifold at 1.
When needing to measure rack intercooler heat dissipation capacity or booster quantity of heat production, Fig. 7 can be referred to, by engine assembly
1 is arranged on engine performance test stand frame 3, and by engine assembly 1 with connect, then by third temperature sensor T3, platform
Frame intercooler 31, the 4th temperature sensor T4It is sequentially connected.Then it loads for engine, and is measured by engine dynamometer 2
The revolving speed and torque of engine assembly 1, by revolving speed and moment of torsion ratio required by measured revolving speed and torque and target operating condition
Compared with by adjusting, so that engine assembly 1 operates under target operating condition.The explanation of target operating condition is please referred to above, herein
It repeats no more.
After engine assembly 1 operates under target operating condition, start to acquire following data: third temperature sensor T3With
And the 4th temperature sensor T4The temperature data measured respectively, electronic control unit 4 measure cold in inflow rack for characterizing
The data on flows of the flow of the compressed air of device 31, revolving speed, torque and the fuel consumption that engine dynamometer 2 measures.
Optionally, in order to improve measurement accuracy, after engine assembly 1 operates under target operating condition, engine is detected
Whether assembly 1 keeps thermal balance and keeps thermally equilibrated duration, and when engine assembly 1 keeps thermally equilibrated lasting
It is long to be greater than scheduled duration and then start to acquire above-mentioned data.
After data acquisition, engine radiating amount can be calculated according to formula 4, formula 4 is as follows:
QIn it is cold=C* ρ * mIn it is cold*(t3-t4)/(106* 60) formula 4
In formula 4, t3For third temperature sensor T3The temperature data measured, t4It is measured for the 4th temperature sensor T4
Temperature data, mIn it is coldFor the stream for the flow for being used to characterize the compressed air for flowing into rack intercooler 31 that electronic control unit 4 measures
Measure data, QIn it is coldFor rack intercooler heat dissipation capacity, C is coolant liquid specific heat capacity, and ρ is coolant liquid density.Optionally, ρ is that coolant liquid exists
Density at 100 DEG C.
Coolant rate test loop 300 is illustrated below.
Before being illustrated to coolant rate test loop 300, engine assembly 1 is illustrated first.Start
Machine assembly 1 is in addition to including booster 11, at least further include: water pump 12, block jacket 13, cylinder head jacket 14, warm wind core
Body 15, booster water jacket 16, oil cooler 17, thermostat 18, wherein the aperture of thermostat 18 is standard-sized sheet.
Water pump 12, block jacket 13, oil cooler 17 and second flowmeter M2.Wherein, water pump 12, cylinder block water
Set 13, oil cooler 17 and second flowmeter M2It is sequentially connected, second flowmeter M2The cooling of oil cooler 17 is set
Liquid exit.
When needing to measure machine oil coolant rate, Fig. 8 can be referred to, by second flowmeter M2It is arranged in oil cooler
At 17 cooling liquid outlet, and by water pump 12, block jacket 13, oil cooler 17 and second flowmeter M2Sequentially phase
Even.Then it is loaded for engine, and measures the revolving speed and torque of engine assembly 1 by engine dynamometer 2, it will be measured
Revolving speed and torque are compared with revolving speed and torque required by target operating condition, by adjusting, so that engine assembly 1 operates in mesh
It marks under operating condition.The explanation of target operating condition is please referred to above, details are not described herein again.Target work is operated in engine assembly 1
After under condition, start to acquire second flowmeter M2The data on flows measured.
As shown in figure 8, it includes: water pump 12, block jacket 13, booster water jacket 16 that coolant rate second, which measures circuit,
And third flowmeter M3.Wherein, water pump 12, block jacket 13, booster water jacket 16 and third flowmeter M3Sequentially phase
Even, third flowmeter M3It is arranged at the cooling liquid outlet of booster water jacket 16.
When needing to measure booster coolant rate, Fig. 8 can be referred to, by third flowmeter M3It is arranged in booster water
At the cooling liquid outlet of set 16, and by water pump 12, block jacket 13, booster water jacket 16 and third flowmeter M3Sequentially phase
Even.Then it is loaded for engine, and measures the revolving speed and torque of engine assembly 1 by engine dynamometer 2, it will be measured
Revolving speed and torque are compared with revolving speed and torque required by target operating condition, by adjusting, so that engine assembly 1 operates in mesh
It marks under operating condition.The explanation of target operating condition is please referred to above, details are not described herein again.Target work is operated in engine assembly 1
After under condition, start to acquire third flowmeter M3The data on flows measured.
As shown in figure 8, coolant rate third measurement circuit includes: water pump 12, block jacket 13, cylinder head jacket
14, the 4th flowmeter M4And heater cores 15.Wherein, the 4th flowmeter M4It is arranged at the coolant inlet of heater cores 15.
When needing to measure warm wind coolant rate, Fig. 8 can be referred to, by the 4th flowmeter M4It is arranged in heater cores 15
Coolant inlet at, and by water pump 12, block jacket 13, cylinder head jacket 14, the 4th flowmeter M4And heater cores
15 are sequentially connected.Then it is loaded for engine, and measures the revolving speed and torque of engine assembly 1 by engine dynamometer 2, it will
Measured revolving speed and torque is compared with revolving speed and torque required by target operating condition, by adjusting, so that engine assembly 1
It operates under target operating condition.The explanation of target operating condition is please referred to above, details are not described herein again.It is run in engine assembly 1
After under target operating condition, start to acquire the 4th flowmeter M4The data on flows measured.
Optionally, test macro further include: vehicle radiator 19 and vehicle oil cooler 20.
As shown in figure 8, it includes: water pump 12, block jacket 13, cylinder head jacket that coolant rate the 4th, which measures circuit,
14, the 5th flowmeter M5, vehicle radiator 19 and thermostat 18.Wherein, water pump 12, block jacket 13, cylinder head jacket
14, the 5th flowmeter M5, vehicle radiator 19 and thermostat 18 be sequentially connected, the 5th flowmeter M5It is arranged in vehicle radiator
At 19 coolant inlet.
When needing to measure coolant rate at radiator inlet, Fig. 8 can be referred to, by the 5th flowmeter M5It is arranged whole
It, optionally, can also be by when needing to measure coolant rate at radiator outlet at the coolant inlet of vehicle radiator 19
Seven flowmeter M7It is arranged at the cooling liquid outlet of vehicle radiator 19.Then by water pump 12, block jacket 13, cylinder head water
Cover the 14, the 5th flowmeter M5, vehicle radiator 19 and thermostat 18 be sequentially connected.Then it is loaded for engine, and passes through hair
Motivation dynamometer machine 2 measures the revolving speed and torque of engine assembly 1, will be required by measured revolving speed and torque and target operating condition
Revolving speed compares with torque, by adjusting, so that engine assembly 1 operates under target operating condition.The explanation of target operating condition is asked
With reference to above, details are not described herein again.After engine assembly 1 operates under target operating condition, start to acquire the 5th flowmeter
M5The data on flows measured.
As shown in figure 8, it includes: water pump 12, block jacket 13, cylinder head jacket that coolant rate the 5th, which measures circuit,
14, vehicle radiator 19, vehicle oil cooler 20 and thermostat 18.Wherein, water pump 12, block jacket 13, cylinder head jacket
14, vehicle radiator 19, vehicle oil cooler 20 and thermostat 18 are sequentially connected, the 6th flowmeter M6It is arranged in vehicle oil cooler
At 20 coolant inlet.
When needing to measure oil cooler coolant rate, Fig. 8 can be referred to, by the 6th flowmeter M6It is arranged cold in vehicle oil
At the coolant inlet of device 20, and water pump 12, block jacket 13, cylinder head jacket 14, vehicle radiator 19, vehicle oil is cold
Device 20 and thermostat 18 are sequentially connected.Then it is loaded for engine, and engine assembly 1 is measured by engine dynamometer 2
Revolving speed and torque, measured revolving speed and torque are compared with revolving speed and torque required by target operating condition, by adjust,
So that engine assembly 1 operates under target operating condition.The explanation of target operating condition is please referred to above, details are not described herein again.?
After engine assembly 1 operates under target operating condition, start to acquire the 6th flowmeter M6The data on flows measured.
Optionally, for second flowmeter M2, third flowmeter M3, the 4th flowmeter M4, the 5th flowmeter M5And the 6th
Flowmeter M6In any flowmeter, in order to improve measurement accuracy, after engine assembly 1 operates under target operating condition, inspection
It surveys whether engine assembly 1 keeps thermal balance and keep thermally equilibrated duration, and keeps thermal balance in engine assembly 1
Duration be greater than and scheduled duration and then start to acquire the data on flows that the flow measurement obtains.
Fig. 9 is the data on flows contrast schematic diagram that each flow measurement obtains under different rotating speeds.In Fig. 9, the unit of data on flows
It is L/min, the unit of revolving speed is r/min.As shown in Figure 9, the flow and engine speed (pump rotary speed) of systemic circulation are flowed through
Related, the two is in a linear relationship；At high speed, since the influence of cavitation (in, the linear ratio of flow reduce, degree is reduced
There is relationship with cavitation erosion amount, there is same phenomenon on real vehicle.
Optionally, test macro further include: first pressure sensor P1With second pressure sensor P2.As shown in figure 8, the
One pressure sensor P1It is arranged at the coolant inlet of engine assembly 1, for measuring the coolant liquid for flowing into engine assembly 1
Pressure；Second pressure sensor P2It is arranged at the cooling liquid outlet of engine assembly 1, for measuring outflow engine assembly
The pressure of 1 coolant liquid.
Optionally, test macro further include: the 5th temperature sensor T5With the 6th temperature sensor T6.5th temperature sensing
Device T5It is arranged at the coolant inlet of oil cooler 17, for measuring the temperature for flowing into the coolant liquid of oil cooler 17；
6th temperature sensor T6It is arranged at the cooling liquid outlet of oil cooler 17, for measuring the cold of outflow oil cooler 17
But the temperature of liquid.
Based on the same inventive concept, the embodiment of the present disclosure also provides a kind of test method of engine heat management performance.Figure
10 be a kind of flow chart of the test method of engine heat management performance of the embodiment of the present disclosure.As shown in Figure 10, this method packet
Include following steps:
In step s101, engine dynamometer and electronic control unit are connected with engine assembly respectively, and will
The engine assembly is arranged on engine performance test stand frame；
In step s 102, according to testing requirement, corresponding test equipment is laid, the testing requirement is engine radiating
Measure examination, the test of rack intercooler heat dissipation capacity or coolant rate test；
In step s 103, in the case where the engine assembly is in different operating conditions, the measured value of the test equipment is measured；
In step S104, the measured value of the measuring device is arranged and analyzed.
Execute the embodiment of the present disclosure provide engine heat management performance test method, first by engine dynamometer with
And electronic control unit is connected with engine assembly respectively, and engine assembly is arranged on engine performance test stand frame,
It completes tentatively to prepare with this.Because no matter measuring any data, electronic control unit and Engine dynamometer may be used
Machine.
Then it determines that testing requirement, testing requirement may be any one of above or multinomial: needing to measure engine and dissipate
Heat needs to measure rack intercooler heat dissipation capacity or booster quantity of heat production, needs to measure booster coolant rate, needs to survey
Amount machine oil coolant rate needs to measure warm wind coolant rate, needs to measure coolant rate at radiator inlet, needs to survey
It measures coolant rate at radiator outlet and needs to measure oil cooler coolant rate.
Optionally, according to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that engine radiating measures examination, by the first temperature sensor T1It is arranged described
At the coolant inlet of engine assembly, to measure the temperature of the coolant inlet of the engine assembly, and, by the second temperature
Spend sensor T2It is arranged at the cooling liquid outlet of the engine assembly, to measure the cooling liquid outlet of the engine assembly
Temperature, and, by first flowmeter M1It is arranged at the coolant inlet of the engine assembly, the hair is flowed into measurement
The flow of the coolant liquid of motivation assembly.
Optionally, according to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that rack intercooler heat dissipation capacity is tested, on the engine performance test stand frame
It is provided with rack intercooler, by third temperature sensor T3It is arranged at the compressed air inlet of the rack intercooler, to survey
The temperature of the compressed air inlet of the rack intercooler is measured, and, by the 4th temperature sensor T4It is arranged in the rack
At the compressed air outlet of cooler, to measure the temperature of the compressed air outlet of the rack intercooler.
Optionally, according to testing requirement, corresponding test equipment is laid, comprising:
In the case where the testing requirement is that coolant rate is tested, the engine assembly includes: water pump, cylinder block
Water jacket, cylinder head jacket, heater cores, booster water jacket, oil cooler, thermostat, wherein the aperture of the thermostat is
Standard-sized sheet；
By second flowmeter M2It is arranged at the cooling liquid outlet of the oil cooler, it is cold to flow out the machine oil with measurement
But the flow of the coolant liquid of device；
By third flowmeter M3It is arranged at the cooling liquid outlet of the booster water jacket, the booster is flowed out with measurement
The flow of the coolant liquid of water jacket；
By the 4th flowmeter M4It is arranged at the coolant inlet of the heater cores, the heater cores is flowed into measurement
Coolant liquid flow；
By the 5th flowmeter M5It is arranged at the coolant inlet of vehicle radiator, the vehicle radiator is flowed into measurement
Coolant liquid flow；
By the 6th flowmeter M6It is arranged at the coolant inlet of vehicle oil cooler, the vehicle oil cooler is flowed into measurement
Coolant liquid flow.
Test equipment may be temperature sensor corresponding with every testing requirement, pressure sensor or flowmeter, comprising:
First temperature sensor T1, first flowmeter M1, second temperature sensor T2, third temperature sensor T3, the 4th temperature sensor
T4, second flowmeter M2, third flowmeter M3, the 4th flowmeter M4, the 5th flowmeter M5, the 6th flowmeter M6, first pressure pass
Sensor P1, second pressure sensor P2Deng.Specific distribution method can be with reference to above.
Then it is loaded for engine, and measures the revolving speed and torque of engine assembly by engine dynamometer, will be surveyed
The revolving speed and torque obtained is compared with revolving speed and torque required by target operating condition, by adjusting, so that engine assembly is run
Under target operating condition, the measured value of test equipment is then measured, finally the measured value of measuring device is arranged and analyzed, example
Such as: being calculated by formula 1- formula 4, and obtain Fig. 3-Fig. 6 or schematic diagram shown in Fig. 9, obtained point according to schematic diagram
Analyse conclusion.
Optionally, in the case where the engine assembly is in different operating conditions, the measured value of the test equipment is measured, comprising:
In the case where the engine assembly is initially in the first operating condition, detect whether the engine assembly reaches heat
Balance；
After the engine assembly is in first operating condition and reaches thermal balance preset duration, the test is measured
The measured value of equipment；
The engine assembly is switched to the second operating condition, second operating condition is different from first operating condition；
In the case where the engine assembly is in second operating condition, the measured value of the test equipment is measured.
Be already mentioned above, in order to improve measurement accuracy, in the case where engine assembly operates in target operating condition after, detection
Whether engine assembly keeps thermal balance and keeps thermally equilibrated duration, and keeps thermally equilibrated in engine assembly and hold
Continuous duration is greater than scheduled duration and then starts to acquire the measured value of measuring device.Acquisition is completed and then is added for engine
It carries, and measures the revolving speed and torque of engine assembly by engine dynamometer, by measured revolving speed and torque and another mesh
Revolving speed required by mark operating condition compares with torque, by adjusting, so that engine assembly operates under another target operating condition, connects
Detection engine assembly whether keep thermal balance and keep thermally equilibrated duration, and keep heat flat in engine assembly
The duration of weighing apparatus is greater than scheduled duration and then starts to acquire the measured value of measuring device.That is, acquisition measurement every time
Before the measured value of equipment, it will ensure that engine assembly is in target operating condition and thermally equilibrated duration is kept to be greater than and make a reservation for
Duration.
It, can be according to survey using the test macro and test method of the engine heat management performance that the embodiment of the present disclosure provides
Examination demand, which lays corresponding test equipment, can accurately determine engine heat management performance according to the measured value of measuring device,
Foundation is provided for the design of engine thermal management system.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of test macro of engine heat management performance characterized by comprising
Engine radiating measurement circuit, comprising: engine assembly, engine dynamometer, the first temperature sensor T1, it is first-class
Meter M1And second temperature sensor T2, wherein the engine assembly is connect with the engine dynamometer, the temperature
Sensor T1With the first flowmeter M1Series connection, the first temperature sensor T1With the first flowmeter M1It is arranged at
At the coolant inlet of the engine assembly, the second temperature sensor T2The coolant liquid of the engine assembly is set
Exit.
2. test macro according to claim 1, which is characterized in that further include:
Rack intercooler heat dissipation measurement circuit, comprising: the engine assembly, engine performance test stand frame, electronic control
Unit, third temperature sensor T3, the 4th temperature sensor T4, the engine assembly is arranged in the engine performance test
On rack, the engine assembly is connect with the electronic control unit, is provided with platform on the engine performance test stand frame
Frame intercooler, the third temperature sensor T3, the rack intercooler, the 4th temperature sensor T4It is sequentially connected.
3. test macro according to claim 1, which is characterized in that the engine assembly includes: water pump, cylinder block water
Set, cylinder head jacket, heater cores, booster water jacket, oil cooler, thermostat, wherein the aperture of the thermostat is complete
It opens；
Second flowmeter M is provided at the cooling liquid outlet of the oil cooler2, wherein the water pump, the cylinder block water
Set, the oil cooler and the second flowmeter M2It is sequentially connected, composition coolant rate first measures circuit；
Third flowmeter M is provided at the cooling liquid outlet of the booster water jacket3, wherein the water pump, the cylinder block water
Set, the booster water jacket and the third flowmeter M3It is sequentially connected, composition coolant rate second measures circuit；
The 4th flowmeter M is provided at the coolant inlet of the heater cores4, wherein the water pump, the block jacket,
The cylinder head jacket, the 4th flowmeter M4And the heater cores are sequentially connected, composition coolant rate third is surveyed
Measure circuit.
4. test macro according to claim 3, which is characterized in that further include:
Vehicle radiator and vehicle oil cooler；
The 5th flowmeter M is provided at the coolant inlet of the vehicle radiator5, wherein the water pump, the cylinder block water
Set, the cylinder head jacket, the 5th flowmeter M5, the vehicle radiator and the thermostat be sequentially connected, form
Coolant rate the 4th measures circuit；
The 6th flowmeter M is provided at the coolant inlet of the vehicle oil cooler6, wherein the water pump, the cylinder block water
Set, the cylinder head jacket, the vehicle radiator, the vehicle oil cooler and the thermostat are sequentially connected, and are formed cold
But flow quantity the 5th measures circuit.
5. test macro according to claim 1, which is characterized in that further include:
First pressure sensor P1, the first pressure sensor P1It is arranged at the coolant inlet of the engine assembly；
Second pressure sensor P2, the second pressure sensor P2It is arranged at the cooling liquid outlet of the engine assembly.
6. a kind of test method of engine heat management performance characterized by comprising
Engine dynamometer and electronic control unit are connected with engine assembly respectively, and the engine assembly is arranged
On engine performance test stand frame；
According to testing requirement, corresponding test equipment is laid, the testing requirement is that engine radiating measures examination, rack intercooler
Heat dissipation capacity test or coolant rate test；
In the case where the engine assembly is in different operating conditions, the measured value of the test equipment is measured；
The measured value of the measuring device is arranged and analyzed.
7. according to the method described in claim 6, wrapping it is characterized in that, lay corresponding test equipment according to testing requirement
It includes:
In the case where the testing requirement is that engine radiating measures examination, by the first temperature sensor T1Setting is started described
At the coolant inlet of machine assembly, to measure the temperature of the coolant inlet of the engine assembly, and, second temperature is passed
Sensor T2It is arranged at the cooling liquid outlet of the engine assembly, to measure the temperature of the cooling liquid outlet of the engine assembly
Degree, and, by first flowmeter M1It is arranged at the coolant inlet of the engine assembly, the engine is flowed into measurement
The flow of the coolant liquid of assembly.
8. according to the method described in claim 6, wrapping it is characterized in that, lay corresponding test equipment according to testing requirement
It includes:
In the case where the testing requirement is that rack intercooler heat dissipation capacity is tested, it is arranged on the engine performance test stand frame
There is rack intercooler, by third temperature sensor T3It is arranged at the compressed air inlet of the rack intercooler, to measure
The temperature of the compressed air inlet of rack intercooler is stated, and, by the 4th temperature sensor T4It is arranged in the rack intercooler
Compressed air outlet at, to measure the temperature of the compressed air outlet of the rack intercooler.
9. according to the method described in claim 6, wrapping it is characterized in that, lay corresponding test equipment according to testing requirement
It includes:
In the case where the testing requirement is that coolant rate is tested, the engine assembly includes: water pump, cylinder block water
Set, cylinder head jacket, heater cores, booster water jacket, oil cooler, thermostat, wherein the aperture of the thermostat is complete
It opens；
By second flowmeter M2It is arranged at the cooling liquid outlet of the oil cooler, the oil cooler is flowed out with measurement
Coolant liquid flow；
By third flowmeter M3It is arranged at the cooling liquid outlet of the booster water jacket, the booster water jacket is flowed out with measurement
Coolant liquid flow；
By the 4th flowmeter M4It is arranged at the coolant inlet of the heater cores, flows into the cold of the heater cores to measure
But the flow of liquid；
By the 5th flowmeter M5It is arranged at the coolant inlet of vehicle radiator, flows into the cold of the vehicle radiator to measure
But the flow of liquid；
By the 6th flowmeter M6It is arranged at the coolant inlet of vehicle oil cooler, flows into the cold of the vehicle oil cooler to measure
But the flow of liquid.
10. according to the method described in claim 6, it is characterized in that, being measured in the case where the engine assembly is in different operating conditions
The measured value of the test equipment, comprising:
In the case where the engine assembly is initially in the first operating condition, detect whether the engine assembly reaches hot flat
Weighing apparatus；
After the engine assembly is in first operating condition and reaches thermal balance preset duration, the test equipment is measured
Measured value；
The engine assembly is switched to the second operating condition, second operating condition is different from first operating condition；
In the case where the engine assembly is in second operating condition, the measured value of the test equipment is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509589.1A CN109141887A (en) | 2017-06-28 | 2017-06-28 | The test macro and test method of engine heat management performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509589.1A CN109141887A (en) | 2017-06-28 | 2017-06-28 | The test macro and test method of engine heat management performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109141887A true CN109141887A (en) | 2019-01-04 |
Family
ID=64803133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509589.1A Pending CN109141887A (en) | 2017-06-28 | 2017-06-28 | The test macro and test method of engine heat management performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141887A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098104A (en) * | 2020-07-30 | 2020-12-18 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN113552485A (en) * | 2021-07-23 | 2021-10-26 | 重庆长安新能源汽车科技有限公司 | New energy automobile thermal management function test system and method |
| CN116519065A (en) * | 2023-06-28 | 2023-08-01 | 江铃汽车股份有限公司 | Water flow test analysis method and system for heat management test radiator |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230847A (en) * | 2011-04-01 | 2011-11-02 | 浙江大学 | Test device for engine thermal management system |
| CN103499448A (en) * | 2013-10-22 | 2014-01-08 | 北京汽车股份有限公司 | Engine heat balancing performance bed tester and engine heat balancing performance bed testing method |
| CN204043915U (en) * | 2014-07-08 | 2014-12-24 | 上海艾铭思汽车控制系统有限公司 | A kind of threst stand cooling water circulating device |
| CN105628386A (en) * | 2015-12-29 | 2016-06-01 | 南车玉柴四川发动机股份有限公司 | Engine test stand system and test method |
| CN105673179A (en) * | 2016-03-22 | 2016-06-15 | 浙江大学 | Engine intelligent cooling system test bed based on separation cooling and reverse cooling and test method |
| CN205559045U (en) * | 2016-02-26 | 2016-09-07 | 刘峰 | Pressure boost gasoline engine cooling system |
| CN106017968A (en) * | 2016-07-29 | 2016-10-12 | 无锡隆盛科技股份有限公司 | EGR cooler heat exchange efficiency detection system |
| CN106198048A (en) * | 2016-07-06 | 2016-12-07 | 浙江大学 | Cooling system of vehicle cold collateral resistance simulation test experiment platform and method thereof |
| CN208239078U (en) * | 2018-05-22 | 2018-12-14 | 襄阳达安汽车检测中心有限公司 | A kind of engine cool water route multi-parameters test device |
-
2017
- 2017-06-28 CN CN201710509589.1A patent/CN109141887A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230847A (en) * | 2011-04-01 | 2011-11-02 | 浙江大学 | Test device for engine thermal management system |
| CN103499448A (en) * | 2013-10-22 | 2014-01-08 | 北京汽车股份有限公司 | Engine heat balancing performance bed tester and engine heat balancing performance bed testing method |
| CN204043915U (en) * | 2014-07-08 | 2014-12-24 | 上海艾铭思汽车控制系统有限公司 | A kind of threst stand cooling water circulating device |
| CN105628386A (en) * | 2015-12-29 | 2016-06-01 | 南车玉柴四川发动机股份有限公司 | Engine test stand system and test method |
| CN205559045U (en) * | 2016-02-26 | 2016-09-07 | 刘峰 | Pressure boost gasoline engine cooling system |
| CN105673179A (en) * | 2016-03-22 | 2016-06-15 | 浙江大学 | Engine intelligent cooling system test bed based on separation cooling and reverse cooling and test method |
| CN106198048A (en) * | 2016-07-06 | 2016-12-07 | 浙江大学 | Cooling system of vehicle cold collateral resistance simulation test experiment platform and method thereof |
| CN106017968A (en) * | 2016-07-29 | 2016-10-12 | 无锡隆盛科技股份有限公司 | EGR cooler heat exchange efficiency detection system |
| CN208239078U (en) * | 2018-05-22 | 2018-12-14 | 襄阳达安汽车检测中心有限公司 | A kind of engine cool water route multi-parameters test device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098104A (en) * | 2020-07-30 | 2020-12-18 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN112098104B (en) * | 2020-07-30 | 2022-03-29 | 东风汽车集团有限公司 | Temperature control valve rack of thermal management system |
| CN113552485A (en) * | 2021-07-23 | 2021-10-26 | 重庆长安新能源汽车科技有限公司 | New energy automobile thermal management function test system and method |
| CN113552485B (en) * | 2021-07-23 | 2023-06-02 | 重庆长安新能源汽车科技有限公司 | New energy automobile thermal management function test system and method |
| CN116519065A (en) * | 2023-06-28 | 2023-08-01 | 江铃汽车股份有限公司 | Water flow test analysis method and system for heat management test radiator |
| CN116519065B (en) * | 2023-06-28 | 2023-09-26 | 江铃汽车股份有限公司 | Water flow test analysis method and system for heat management test radiator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102230847B (en) | Test device for engine thermal management system | |
| CN109141887A (en) | The test macro and test method of engine heat management performance | |
| US8770834B2 (en) | Thermostat diagnostic apparatus | |
| CN101429896B (en) | Method to determine the fuel temperature in a common rail injection system | |
| Torregrosa et al. | Assessment of the influence of different cooling system configurations on engine warm-up, emissions and fuel consumption | |
| US20150361864A1 (en) | Control of radiator cooling fans | |
| CN109738223A (en) | Fuel cell heat management testboard bay and fuel cell heat management monitoring system | |
| CN102507193B (en) | Power compartment simulation system | |
| CN107959092A (en) | Method for controlling battery cell temperature | |
| Bova et al. | A dynamic nucleate-boiling model for CO2 reduction in internal combustion engines | |
| CN109738801A (en) | Battery system heating power test method and system | |
| Donn et al. | Experimental heat flux analysis of an automotive diesel engine in steady-state operation and during warm-up | |
| CN105223023A (en) | The detection method of a kind of EGR gas temperature and cooler for recycled exhaust gas cooling effectiveness | |
| Broatch et al. | Improvement in engine thermal management by changing coolant and oil mass | |
| CN108776025A (en) | The heat management system test platform of power drive system | |
| CN209311114U (en) | Fuel cell heat management testboard bay and fuel cell heat management monitoring system | |
| Keller et al. | Coupled Thermal-Engine Simulation for a Light Duty Application | |
| Zhang et al. | Modelling and optimal control of energy-saving-oriented automotive engine thermal management system | |
| CN107631891A (en) | The method of testing of engine with supercharger cooling system function | |
| CN112378666B (en) | Engine exhaust hot end durability test method, test device and system | |
| US20220221376A1 (en) | Heavy duty engine regulatory testing apparatus and method | |
| JP2011127904A (en) | Engine bench | |
| Tan et al. | Numerical simulation on flow field characteristics of the four cylinder engine cooling system and its performance improvement | |
| CN109100164A (en) | thermal simulation system and heating component testing method | |
| CN220084347U (en) | Test device for simulating whole vehicle low-temperature cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
|
| RJ01 | Rejection of invention patent application after publication |