CN109883710A - A kind of Engine Block Test operating condition construction method - Google Patents
A kind of Engine Block Test operating condition construction method Download PDFInfo
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- CN109883710A CN109883710A CN201910200217.XA CN201910200217A CN109883710A CN 109883710 A CN109883710 A CN 109883710A CN 201910200217 A CN201910200217 A CN 201910200217A CN 109883710 A CN109883710 A CN 109883710A
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- operating condition
- test operating
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- 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
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
-
- 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
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/044—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests
-
- 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
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Heavy-duty commercial vehicle engine wide variety, vehicle configuration is complicated, and because manufacturing enterprise is dedicated to improving VE Vehicle Economy and handling, engine and art drive systems are always in ceaselessly variation and progress, directly acquisition engine data constructs the active development that test loop is difficult to adapt to technology, guarantees permanent applicability, independence and the stability of operating condition.The present invention proposes a kind of Engine Block Test operating condition construction method, including transient test operating condition and steady state test operating condition, transient test operating condition is constructed based on CHTC performance curve, according to transient test performance curve, steady state test operating condition is constructed based on engine speed-load percentage simultaneous distribution hotspot graph.When establishing transient test operating condition, the speed in CHTC performance curve is changed by engine speed by driving engine model.
Description
Technical field
The invention belongs to traffic and transport field, especially a kind of Engine Block Test operating condition construction method.
Background technique
Motor vehicle exhaust emission is reduced, is that automobile industry has to face and solve the problems, such as.Heavy-duty commercial vehicle energy conservation and
Pollutant prevention and treatment is the important measures of China's motor vehicle Green Development, heavy as the energy consumption emission regulation of country is increasingly stringent
Commerial vehicle faces bigger challenge in energy-conserving and emission-cutting technology optimization.
The discharge certification of heavy-duty commercial vehicle is authenticated indirectly by engine rig test, wherein Engine Block Test
Operating condition is that bench test must input parameter.Currently, being Europe used in China's heavy-duty commercial vehicle engine bench test
ETC transient cycle and ESC steady-cycle in stable state, domestic correlative study show engine speed in China's vehicle actual motion, load
Distribution characteristics is recycled with more than and is differed greatly, so as to cause the certification knot under the emissions data and regulation operating condition under actual condition
There are relatively large deviations for fruit.The Engine Block Test operating condition that formulation meets China's real road operating condition is adapted to China for guidance
The application of the energy-conserving and emission-cutting technology of real road traffic condition is of great significance.
Summary of the invention
The present invention proposes a kind of Engine Block Test operating condition construction method, the technical solution adopted is as follows:
A kind of Engine Block Test operating condition construction method, including transient test operating condition and steady state test operating condition, with CHTC operating condition
Transient test operating condition is constructed based on curve, each transient condition point is made of engine speed and load percentage, according to wink
State measurement condition curve constructs steady state test operating condition based on engine speed-load percentage simultaneous distribution hotspot graph.
When establishing transient test operating condition, the speed in CHTC performance curve is changed by driving engine model and is started
Machine revolving speed.According to the corresponding vehicle power P (t) of operating point each in CHTC performance curve, in CHTC performance curve, Mei Gegong
Peak power output P corresponding to condition point engine speedmax(Ne (t)) determines load percentage.
When establishing steady state test operating condition, hotspot graph is distributed by engine speed-load simultaneous, selects several joint densities
Maximum operating point is as steady state test operating point.The operating point in transient test performance curve is investigated, with each steady state test work
Centered on condition point, these transient condition points are included in the steady state test work by identification and the closer transient condition point of its space length
In the overlay area of condition point, according to the number of transient condition points all in overlay area, calculates each steady state test pair of operation points and answer
Weight.
Compared with prior art, the beneficial effects of the present invention are:
1. the measurement condition of the method building proposed through the invention can cover most of heavy-duty commercial vehicle engine fortune
The Engine Block Test operating condition of market condition.
2. the measurement condition of the method building proposed through the invention can really reflect that China's heavy-duty commercial vehicle starts
The operating condition of machine.
3. proposing a kind of method for building up of steady state test operating condition, the steady state test operating condition of foundation meets opening for engine
The testing requirement of hair and experimental stage.
Detailed description of the invention
Fig. 1 is CHTC-HT Operation mode cycle；
Fig. 2 is engine transient performance curve；
Fig. 3 is the transient test operating condition constructed in embodiment；
Fig. 4 is engine speed in embodiment-load simultaneous distribution.
Specific embodiment
In the present embodiment, the Engine Block Test operating condition of proposition includes transient test operating condition and steady state test operating condition, and transient state is surveyed
In trial work condition, transient condition point is made of engine speed and load percentage.
In the present embodiment, has chosen CHTC-HT operating condition of the various features parameter in average level in CHTC system and follow
Transient test operating condition is constructed based on ring；Pass through a kind of maximum design total mass 18000kg, the heavy quotient of rated power 134kw
Illustrate the establishment process of measurement condition with vehicle, is known as vehicle A in the present embodiment for ease of description.
When establishing transient test operating condition, step includes:
S101. it by the running resistance curve of the vehicle A provided by manufacturer, calculates in CHTC-HT Operation mode cycle, 1800
The corresponding vehicle power of a operating point, the calculation formula of power are as follows:
V (t) is vehicle driving pattern automobile's instant velocity in formula, and TM is the test quality of vehicle A, and KR is the power train of vehicle A
System inertial parameter, fiFor the road resistance to sliding parameter of vehicle A.
S102. using domestic and international engine operating condition drive model as foundation, foundation is started by 6 gears that characteristic parameter characterizes
Machine drive model, characteristic parameter include the transmission ratio under final driver ratio and each gear.
S103. it is determined in CHTC-HT Operation mode cycle using driving engine model, the corresponding output shelves of 1800 operating points
Position.
It specifically includes:
S103-1. it by driving engine model, establishes in CHTC-HT Operation mode cycle, calculates the speed of each operating point
The corresponding engine speed under 6 gears；
S103-2. according to engine transient performance curve, determine under each gear corresponding revolving speed and maximum torque and
The relationship of maximum power；
S103-3. the output gear for meeting most optimal gear rule is found out；
Wherein most optimal gear rule includes:
1. operability: in addition to starting to walk and shifting gears, when the corresponding revolving speed of gear should be 55% not less than maximum power, vehicle
In the corresponding minimum speed of mapping curve, when not higher than maximum power being 90%, the corresponding maximum speed of vehicle.
2. dynamic property: maximum power is more than or equal to the instantaneous power P (t) of vehicle operating condition under gear.
3. adaptability: by mapping curve, finding out the corresponding torque value of each candidate gear, choose torque value and wink
The immediate gear of maximum torque is as output gear in state performance curve, and then determines each operating condition in transient test operating condition
The corresponding engine speed of point.
S104. determine in CHTC-HT Operation mode cycle that 1800 operating points are corresponding by drive model and output gear,
Revolving speed (rpm) when output power maximum, the formula of use are as follows:
In formula, imIt is transmission ratio, the corresponding output gear of operating point determines；ifIt is the main reducing gear of drive model
Transmission ratio；R is tire under vehicle testing mass loading, the rolling radius of tire.
S105. Ne (t) corresponding peak power output P is searched by mapping curvemax(Ne(t)), in conjunction with vehicle function
Rate calculated load percentage, the formula of use are as follows:
。
When establishing steady state test operating condition, step includes:
S201. engine speed-load simultaneous distribution of 1800 transient condition points of transient test curve is investigated；
S202. hotspot graph is distributed by engine speed-load simultaneous, 6 highest engines of the frequency of occurrences is selected to turn
Speed is worth, and is 30%, 35%, 40%, 45%, 55%, 60% in the present embodiment；
S203. speed-load of the operating point near this 6 engine speed values in transient test performance curve is investigated
Joint Distribution situation, selects operating point of the highest 10 operating condition point values of distribution density as steady state test operating condition, while with
50% engine speed is basic point, adds a full load mode point, using 0% engine speed as basic point, adds an idling
Operating point.
S204. the corresponding weight of each operating point is calculated, specifically:
S204-1. the weight P of motor driven operating point is determined by CHTC-HT Operation mode cyclemotor(%)；
S204-2. the weight P of idling operation point is determined by CHTC-HT Operation mode cycleidle(%)；
S204-3. according to the distribution situation of the 1800 of transient test performance curve operating points, other 11 stable states are determined
The corresponding weight of operating point, when determining weight, approximation determines a square area, just centered on each steady state condition point
Rectangular each edge is equidistant to steady state condition point.The size of each square area is identical, it is mutual in all squares
Between overlapping area be no more than under the restrictive condition of an area, enable all squares cover more transient state works as far as possible
Condition point.The number of transient condition point in each square area is counted, and then calculates the corresponding weight of each steady state condition point, it is public
Formula are as follows:
WFi=(operating point summation in operating point quantity/all areas in ith zone) * (1-Pmotor-Pidle) (%)
In the present embodiment, the steady state test operating condition of foundation is as shown in the table:
Table 1
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (8)
1. a kind of Engine Block Test operating condition construction method, which is characterized in that including transient test operating condition and steady state test operating condition, with
Transient test operating condition is constructed based on CHTC performance curve, each transient condition point is by engine speed and load percentage group
At according to transient test performance curve, building stable state is surveyed based on engine speed-load percentage simultaneous distribution hotspot graph
Trial work condition.
2. a kind of Engine Block Test operating condition construction method as described in claim 1, which is characterized in that pass through driving engine model
Speed in CHTC performance curve is changed into engine speed.
3. a kind of Engine Block Test operating condition construction method as claimed in claim 2, which is characterized in that pass through driving engine model
When speed is changed into engine speed, process includes gear selection corresponding with speed and vehicle power.
4. a kind of Engine Block Test operating condition construction method as claimed in claim 3, which is characterized in that when calculated load percentage,
The formula of use includes:
In formula, P (t) is the corresponding engine power of operating point each in CHTC performance curve, Pmax(Ne (t)) is CHTC operating condition
In curve, peak power output corresponding to each operating point engine speed.
5. a kind of Engine Block Test operating condition construction method as described in claim 1, which is characterized in that negative by engine speed-
Lotus percentage simultaneous is distributed hotspot graph, selects the maximum operating point of several joint densities as steady state test operating point.
6. a kind of Engine Block Test operating condition construction method as claimed in claim 5, which is characterized in that manually one full load of addition
Operating point is as steady state test operating point.
7. a kind of Engine Block Test operating condition construction method as claimed in claim 6, which is characterized in that artificial addition idling operation point
As steady state test operating point.
8. a kind of Engine Block Test operating condition construction method as claimed in claim 6, which is characterized in that bent using transient test operating condition
Line finds all transient condition points nearest with its space length, by transient condition point centered on each steady state test operating point
It is included in the overlay area of the steady state test operating point, by the number of transient condition points all in overlay area, calculates each steady
The corresponding weight of state measurement condition point.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200217.XA CN109883710A (en) | 2019-03-15 | 2019-03-15 | A kind of Engine Block Test operating condition construction method |
| LU102195A LU102195B1 (en) | 2019-03-15 | 2020-03-11 | Method for constructing engine test cycles. |
| PCT/CN2020/078841 WO2020187111A1 (en) | 2019-03-15 | 2020-03-11 | Method for constructing engine test conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200217.XA CN109883710A (en) | 2019-03-15 | 2019-03-15 | A kind of Engine Block Test operating condition construction method |
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| CN109883710A true CN109883710A (en) | 2019-06-14 |
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| CN201910200217.XA Pending CN109883710A (en) | 2019-03-15 | 2019-03-15 | A kind of Engine Block Test operating condition construction method |
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| CN (1) | CN109883710A (en) |
| LU (1) | LU102195B1 (en) |
| WO (1) | WO2020187111A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531638A (en) * | 2019-09-03 | 2019-12-03 | 清华大学 | PHEV component floor data statistics and operating condition construction method based on vehicle simulation model |
| CN110555270A (en) * | 2019-09-03 | 2019-12-10 | 清华大学 | PHEV component working condition data statistical method based on bench test and working condition construction method |
| WO2020187111A1 (en) * | 2019-03-15 | 2020-09-24 | 中国汽车技术研究中心有限公司 | Method for constructing engine test conditions |
| CN113588270A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Method and device for detecting turbocharging electric control actuator |
| CN114547811A (en) * | 2022-04-27 | 2022-05-27 | 中汽研汽车检验中心（天津）有限公司 | Method for predicting engine transient working condition abrasion loss |
| CN116448436A (en) * | 2023-06-13 | 2023-07-18 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
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2019
- 2019-03-15 CN CN201910200217.XA patent/CN109883710A/en active Pending
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2020
- 2020-03-11 WO PCT/CN2020/078841 patent/WO2020187111A1/en active Application Filing
- 2020-03-11 LU LU102195A patent/LU102195B1/en active IP Right Grant
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| JP2004239702A (en) * | 2003-02-05 | 2004-08-26 | Honda Motor Co Ltd | Creation and verification method of sequence file of automatic engine testing device using engine model |
| US20050072221A1 (en) * | 2003-10-07 | 2005-04-07 | Toyota Jidosha Kabushiki Kaisha | Trouble diagnostic apparatus for fuel treatment system |
| CN103969048A (en) * | 2014-02-18 | 2014-08-06 | 潍柴动力股份有限公司 | Method and device for selecting operating points |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020187111A1 (en) * | 2019-03-15 | 2020-09-24 | 中国汽车技术研究中心有限公司 | Method for constructing engine test conditions |
| CN110531638A (en) * | 2019-09-03 | 2019-12-03 | 清华大学 | PHEV component floor data statistics and operating condition construction method based on vehicle simulation model |
| CN110555270A (en) * | 2019-09-03 | 2019-12-10 | 清华大学 | PHEV component working condition data statistical method based on bench test and working condition construction method |
| CN110531638B (en) * | 2019-09-03 | 2020-11-06 | 清华大学 | PHEV component working condition data statistics and working condition construction method based on whole vehicle simulation model |
| CN113588270A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Method and device for detecting turbocharging electric control actuator |
| CN113588270B (en) * | 2021-06-18 | 2024-04-16 | 东风汽车集团股份有限公司 | Method and device for detecting turbocharging electric control actuator |
| CN114547811A (en) * | 2022-04-27 | 2022-05-27 | 中汽研汽车检验中心（天津）有限公司 | Method for predicting engine transient working condition abrasion loss |
| CN114547811B (en) * | 2022-04-27 | 2022-07-15 | 中汽研汽车检验中心（天津）有限公司 | Method for predicting engine transient working condition abrasion loss |
| CN116448436A (en) * | 2023-06-13 | 2023-07-18 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
| CN116448436B (en) * | 2023-06-13 | 2023-09-01 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| LU102195B1 (en) | 2021-05-12 |
| WO2020187111A1 (en) | 2020-09-24 |
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Application publication date: 20190614 |