CN109187028B - Test evaluation method for engine super-knock safety margin design - Google Patents
Test evaluation method for engine super-knock safety margin design Download PDFInfo
- Publication number
- CN109187028B CN109187028B CN201811119166.XA CN201811119166A CN109187028B CN 109187028 B CN109187028 B CN 109187028B CN 201811119166 A CN201811119166 A CN 201811119166A CN 109187028 B CN109187028 B CN 109187028B
- Authority
- CN
- China
- Prior art keywords
- super
- detonation
- engine
- mileage
- parts
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 238000013461 design Methods 0.000 title claims abstract description 36
- 238000011156 evaluation Methods 0.000 title claims abstract description 27
- 238000005474 detonation Methods 0.000 claims abstract description 128
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 238000004880 explosion Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
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
The invention discloses a test evaluation method for engine super-detonation safety margin design, which comprises the following steps of: 1) by monitoring super detonation in an engine bench test, collecting detonation pressure data and determining a probability curve of the detonation pressure distribution of the super detonation of the engine; 2) the super detonation occurrence frequency of the whole vehicle under a certain endurance mileage is determined by monitoring the super detonation occurrence in the endurance test of the whole vehicle and counting the super detonation occurrence frequency; 3) and determining the failure probability of the parts due to superexplosion under a certain mileage of the whole vehicle according to the curve of the zero part antiknock intensity value and the distribution probability of the rack superexplosion detonation pressure. Design evaluation is provided for the design of the parts by a scientific method, and the faults of the parts caused by the super detonation can be reduced to a great extent.
Description
Technical Field
The invention relates to the technical field of engine tests, in particular to a test evaluation method for super detonation safety margin design of an engine.
Background
In order to meet increasingly severe requirements on fuel consumption of automobile engines and improve engine efficiency, a boosting technology in the aspect of traditional internal combustion engines and a gasoline engine combining an in-cylinder direct injection technology are considered as main ways for improving fuel economy and reducing emission, and with the continuous improvement of boosting ratio and load, a gasoline engine can generate accidental abnormal combustion phenomenon, namely super detonation, under the working conditions of low speed and large load. The intensity of super knock and damage to the engine are much greater than normal knock, the peak in-cylinder pressure can even exceed 30Mpa, causing engine component failure, which in turn leads to failure of other associated components and systems, and finally to failure of the engine, which not only brings about an increase in after-market costs, complaints from customers, but even unpredictable risks to the driver.
The super detonation and detonation pressure are random, and based on a scientific design method that the engine parts at the present stage do not have detonation pressure resistant safety margin, whether the design of the safety margin of the parts meets the definition or not can not be accurately judged, and whether the design of the safety margin of the parts meets the definition of an after-sales fault target value caused by the super detonation or not can not be judged, so that the scientific and effective test evaluation method for the design of the super detonation safety margin of the engine is very necessary.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a test evaluation method for designing the super detonation safety margin of an engine so as to achieve the aim of evaluating the reasonability of the safety margin design of the detonation pressure resistance of engine parts.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the test evaluation method for the engine super-knock safety margin design comprises the following steps:
1) by monitoring super detonation in an engine bench test, collecting detonation pressure data and determining a probability curve of the detonation pressure distribution of the super detonation of the engine;
2) the super detonation occurrence frequency of the whole vehicle under a certain endurance mileage is determined by monitoring the super detonation occurrence in the endurance test of the whole vehicle and counting the super detonation occurrence frequency;
3) and determining the failure probability of the parts due to superexplosion under a certain mileage of the whole vehicle according to the curve of the zero part antiknock intensity value and the distribution probability of the rack superexplosion detonation pressure.
Wherein the content of the first and second substances,
in the step 2), the actual working condition mileage of the ordinary user in the super knock occurrence interval within a certain mileage is evaluated by comparing with the actual working condition mileage of the entire vehicle endurance test in the super knock occurrence interval, so that the actual probability of super knock occurrence of the ordinary user vehicle within a certain mileage is determined.
And in the step 3), determining the superdetonation failure probability of the parts in a certain driving mileage of the ordinary user according to the superdetonation failure probability of the parts in the certain driving mileage of the whole vehicle and the superdetonation detonation pressure occurrence probability of the parts under the actual driving working condition of the ordinary user.
In the step 1), data acquisition is carried out through a cylinder pressure sensor installed on the bench engine, and the data are transmitted to a computer through a data channel to be monitored and read.
And in the step 2), acquiring the super detonation occurrence frequency of the engine through a data automobile data recorder.
The general user can evaluate within the endurance test mileage of a 30000KM or 100000KM whole vehicle.
When the cylinder pressure sensor monitors that the detonation pressure value is larger than or equal to 80bar, recording the detonation pressure value as the occurrence of one super detonation, and counting and recording the detonation pressure value of each time.
Compared with the prior art, the invention has the following advantages:
the test evaluation method for the engine super detonation safety margin design is reasonable in design, a model of super detonation frequency and detonation pressure distribution is established through tests, the design rationality of the safety margin of the parts is evaluated, the method is novel and reliable and easy to realize, the design evaluation is provided for the parts design by a scientific method, and the parts faults caused by super detonation can be reduced to a great extent.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a graph of detonation pressure distribution probability according to the present invention.
FIG. 2 is a schematic diagram of a data monitoring and reading method according to the present invention.
FIG. 3 is a schematic diagram of the spark plug detonation pressure of the present invention.
FIG. 4 is a schematic diagram of a super knock generating condition interval according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the method for experimental evaluation of engine super-knock safety margin design includes the following steps:
by monitoring super detonation in an engine bench test, collecting detonation pressure data and determining a probability curve of the detonation pressure distribution of the super detonation of the engine;
the super detonation occurrence frequency of the whole vehicle under a certain endurance mileage is determined by monitoring the super detonation occurrence in the endurance test of the whole vehicle and counting the super detonation occurrence frequency;
and determining the failure probability of the parts due to superexplosion under a certain mileage of the whole vehicle according to the curve of the zero part antiknock intensity value and the distribution probability of the rack superexplosion detonation pressure.
Wherein the content of the first and second substances,
the method comprises the steps of evaluating the mileage of a common user in a working condition in a super-knock generation interval during actual operation within a certain mileage and comparing the mileage of a whole vehicle endurance test in the working condition in the super-knock generation interval, and determining the probability of the common user in the actual super-knock occurrence of the vehicle within the certain mileage. The general users can evaluate the endurance test mileage of 30000KM or 100000KM whole vehicle.
And determining the superdetonation failure probability of the parts in the certain driving mileage of the ordinary user according to the superdetonation failure probability of the parts in the certain driving mileage of the whole vehicle and the superdetonation detonation pressure occurrence probability of the parts in the actual driving working condition of the ordinary user. And acquiring the super detonation occurrence frequency of the engine through a data automobile data recorder.
Data acquisition is carried out through a cylinder pressure sensor installed on the rack engine, and the data are transmitted to a computer through a data channel to be monitored and read to obtain super knocking occurrence data. When the cylinder pressure sensor monitors that the detonation pressure value is larger than or equal to 80bar, recording the detonation pressure value as the occurrence of one super detonation, and counting and recording the detonation pressure value of each time.
Specific preferred examples are:
the distribution probability of the super detonation pressure of the rack is as follows: by monitoring super detonation in an engine bench test (super detonation test cycle working condition), collecting detonation pressure data and determining a probability curve model of the engine super detonation pressure distribution.
Super detonation pressure frequency of the whole vehicle: the super detonation occurrence frequency of the whole automobile under a certain endurance mileage is determined by monitoring the super detonation occurrence in the whole automobile endurance test (30,000km or 100,000km) and counting the super detonation occurrence frequency.
And (3) evaluating the probability of over-explosion failure of the whole part vehicle under a certain mileage: and determining the failure probability of the parts due to superexplosion under a certain mileage of the whole vehicle through a curve model of the zero part antiknock intensity value and the rack superexplosion pressure distribution probability.
Evaluating the super detonation pressure occurrence probability under the actual driving working condition of a common user: the probability of the super knock of the vehicle of the ordinary user in a certain mileage is determined by evaluating the mileage of the working condition of the ordinary user in the super knock occurrence interval in a certain mileage and the mileage of the working condition of the whole vehicle endurance test (30,000km or 100,000km) in the super knock occurrence interval in a certain mileage and comparing and evaluating.
And (3) evaluating the explosion pressure resistance safety margin of the parts: and determining the superdetonation failure probability of the parts in the certain driving mileage of the ordinary user according to the superdetonation failure probability of the parts in the certain driving mileage of the whole vehicle and the superdetonation detonation pressure occurrence probability of the parts in the actual driving working condition of the ordinary user. And comparing IPTV target values (failure frequency caused by superexplosion) within a certain mileage of the whole automobile of the parts, thereby evaluating the reasonability of the anti-explosion pressure design parameters of the parts.
And (3) designing and optimizing the anti-explosion pressure intensity of the parts: and verifying the accuracy and the reliability of the super-knock resistance intensity design value of the part through a large amount of whole vehicle road test data and after-sale fault data so as to achieve a better design scheme.
The distribution probability of the super detonation pressure of the durability test of the rack, the occurrence frequency of the super detonation pressure of the durability test of the whole vehicle, the intensity of the explosion-proof pressure of the parts and the occurrence probability of the explosion-proof pressure of the parts under the actual driving working condition of a common user are comprehensively evaluated, so that the probability of the explosion-proof failure of the parts in a certain mileage of the common user is determined, and the rationality of the designed value of the intensity of the explosion-proof pressure of the parts is evaluated by comparing IPTV target values (failure frequency caused by the explosion) of the parts in a certain mileage of the whole vehicle.
The safety margin design of the explosion pressure resistance strength of the spark plug ceramic is taken as an example as follows:
the distribution probability of the super detonation pressure of the rack is as follows:
the method comprises the steps of carrying out data monitoring on an X-rack super-detonation test cycle working condition test of the engine, carrying out data acquisition through a cylinder pressure sensor arranged on an engine of a rack, transmitting data to computer INCA software through a rack data channel to monitor and read super detonation occurrence, recording the super detonation occurrence as one-time super detonation occurrence when a detonation pressure value is larger than or equal to 80bar, counting the detonation pressure value of each time, calculating and converting the detonation pressure value into detonation pressure distribution probability, and forming a detonation pressure distribution probability curve graph (shown in figure 1).
II, super detonation and detonation pressure frequency of the whole vehicle:
carrying out data monitoring on 30,000km (or 10,000km) of a finished automobile Y (carrying an engine X) road test endurance test, carrying out engine super detonation occurrence frequency acquisition (detonation pressure is more than or equal to 80bar for recording once) by a data automobile data recorder connected with an OBD diagnostic port of the finished automobile, detaching the data automobile data recorder from the finished automobile Y after the finished automobile Y road test is finished, connecting the data automobile data recorder to a computer, and reading the frequency of super detonation occurrence by using INCA software (engine calibration software): and 100 times, so that the super knock occurrence frequency of the durable road test under the 30000km mileage of the whole automobile Y is determined to be 100 times. The specific reading mode is shown in fig. 2. The average number is obtained by collecting super knock detection data of two-round (the number of tests can be arranged according to resources) durable road tests. Example (c): the average times is 100, namely the super knocking occurrence frequency of the whole vehicle Y under the durable road test mileage of 30000 km.
Thirdly, evaluating the probability of over-explosion failure of the whole part vehicle under a certain mileage
Taking the evaluation of the design rationality of the breaking strength of the ceramic of the spark plug within 30000km of the whole vehicle Y as an example:
1) through the distribution probability of the super detonation pressure of the engine X rack super detonation test circulation working condition, the anti-detonation pressure intensity of the parts and the whole automobile 30000km road test super detonation frequency, the probability of failure of the parts due to super detonation is determined, namely:
the frequency of the occurrence of the superexplosion of the whole vehicle Y within 30000km mileage is M
Probability of superexplosion failure of parts is N
The probability of failure of parts in 30000km mileage of the whole automobile due to superexplosion is S
S＝M×N
2) Calculation of explosion pressure resistance P of spark plug
The diameter D of the spark plug ceramic is 3mm
The length (exposed part) L of the spark plug ceramic is 3mm
The breaking strength F of the spark plug ceramic is 220Nm
It can be seen that the force-receiving area a of the spark plug is D × L9 mm2
P＝F/A＝244.4bar
3) The probability of the super-explosion failure of the parts can be estimated through a super-detonation pressure distribution probability chart of the engine, namely
The detonation pressure is larger than or equal to P and 244.4bar, N is approximately equal to 0.001
4) The probability of failure of the parts due to superexplosion within 30000km of the whole automobile can be known
S＝100×0.001＝0.1
Fourth, evaluating the occurrence probability of super detonation pressure under the actual working condition of the ordinary user
Through accumulation of test data and establishment of a model, a working condition interval when the normal super-knock occurs can be obtained (see fig. 4, a dark gray part is a super-knock occurrence interval).
The daily running working condition of an actual ordinary user is different from the road test working condition, and naturally, the probability of super detonation is different, and the actual super detonation occurrence probability is determined by evaluating the super detonation working condition occurrence mileage between the actual running working condition and the super detonation working condition occurrence mileage. According to the mileage of the ordinary user actually driving in the super detonation working condition interval within 30000km, comparing the mileage of the whole vehicle Y driving in the super detonation working condition interval within 30000km, and thus evaluating the super detonation pressure occurrence probability W of the ordinary user under the actual working condition as 0.01.
Fifthly, evaluating safety margin of anti-detonation pressure of parts
And determining the probability of the superdetonation failure of the spark plug in the 30000km driving range of the ordinary user through the probability of the superdetonation failure of the spark plug in the 30000km driving range of the whole vehicle and the probability evaluation value of the occurrence of the superdetonation detonation pressure under the actual working condition in the 30000km driving range of the ordinary user.
The probability of over-explosion failure of the spark plug within 30000km of common users is Z
Z＝W×S＝0.01×0.1＝0.001
Namely, the actual over-burst failed IPTV value of the spark plug is as follows: 1
The IPTV target value (failure frequency caused by superexplosion) of the spark plug within 30000km of the whole vehicle is 0.5
The IPTV value of the actual over-explosion failure of the spark plug is 1, and the IPTV target value of the spark plug is 0.5
It is known that the current design value of the anti-knock pressure of the spark plug does not meet the requirements.
Sixthly, designing and optimizing the anti-explosion pressure intensity of the parts:
according to the method, the accuracy and the reliability of the design value of the bending strength of the super detonation resistance of the parts are verified through statistics of a large number of super detonation occurrence frequency data of a whole vehicle road test and spark plug fault data caused by the super detonation in an after-market, the probability evaluation of the super detonation pressure occurrence under the actual driving condition of a common user is corrected and perfected, and a super detonation failure model with different mileage spark plug quality requirements is established and perfected so as to achieve a better spark plug design scheme.
According to the establishment of a distribution probability model of the super detonation pressure of different parts of the engine in a certain mileage of the whole vehicle, the reliability of the test evaluation method of the safety margin of the super detonation of the engine can be continuously optimized, and a scientific evaluation method and reference are provided for the design parameters of the super detonation pressure resistance of the parts of the engine. Meanwhile, the establishment of the evaluation method can provide reference and reference for the development of parts of other engine projects, and the universality and the platform of the part design are improved.
The sensitivity and parameters of different parts to the detonation pressure of the engine for resisting super detonation are different, the designed evaluation methods are also different, and the test evaluation method can be used for directly or indirectly carrying out conversion evaluation through the detonation pressure and establishing the design safety margin of the super detonation failure in a certain mileage of the whole vehicle.
The design rationality of safety allowance of the parts is evaluated by establishing a model of the super detonation frequency and detonation pressure distribution through tests, the method is novel and reliable and easy to realize, the design evaluation is provided for the parts by a scientific method, and the faults of the parts caused by super detonation can be reduced to a great extent.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (5)
1. A test evaluation method for engine super-knock safety margin design is characterized by comprising the following steps: the test evaluation method comprises the following steps:
1) by monitoring super detonation in a circulating working condition test of an engine pedestal super detonation test, collecting detonation pressure data and determining a probability curve of the engine super detonation pressure distribution;
2) the super detonation occurrence frequency of the whole vehicle under a certain endurance mileage is determined by monitoring the super detonation occurrence in the endurance test of the whole vehicle and counting the super detonation occurrence frequency;
3) determining the failure probability of the parts caused by the super detonation under a certain mileage of the whole vehicle according to the curve of the anti-detonation pressure intensity value of the parts and the distribution probability of the super detonation pressure of the rack;
wherein the content of the first and second substances,
the failure probability caused by actual superexplosion of the vehicle of the ordinary user within a certain mileage is determined by evaluating the mileage of the working condition of the ordinary user within a certain mileage during actual operation in the super-knock generation interval and comparing and evaluating the mileage of the working condition of the entire vehicle endurance test within the super-knock generation interval;
and in the step 3), determining the failure probability caused by the superexplosion of the parts within a certain driving range of the common user according to the failure probability caused by the superexplosion of the parts within the certain driving range of the whole vehicle and the failure probability caused by the superexplosion of the parts under the actual driving working condition of the common user.
2. The method for experimental evaluation of engine super-knock safety margin design according to claim 1, wherein: in the step 1), data acquisition is carried out through a cylinder pressure sensor installed on the bench engine, and the data are transmitted to a computer through a data channel to be monitored and read.
3. The method for experimental evaluation of engine super-knock safety margin design according to claim 1, wherein: and in the step 2), acquiring the super detonation occurrence frequency of the engine through a data automobile data recorder.
4. The method for experimental evaluation of engine super-knock safety margin design according to claim 1, wherein: the general user can evaluate within the endurance test mileage of a 30000KM or 100000KM whole vehicle.
5. The method for experimental evaluation of engine super knock safety margin design according to claim 2, wherein: when the cylinder pressure sensor monitors that the detonation pressure value is larger than or equal to 80bar, recording the detonation pressure value as the occurrence of one super detonation, and counting and recording the detonation pressure value of each time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119166.XA CN109187028B (en) | 2018-09-25 | 2018-09-25 | Test evaluation method for engine super-knock safety margin design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119166.XA CN109187028B (en) | 2018-09-25 | 2018-09-25 | Test evaluation method for engine super-knock safety margin design |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109187028A CN109187028A (en) | 2019-01-11 |
| CN109187028B true CN109187028B (en) | 2020-06-09 |
Family
ID=64909790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119166.XA Active CN109187028B (en) | 2018-09-25 | 2018-09-25 | Test evaluation method for engine super-knock safety margin design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109187028B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113768B (en) * | 2020-09-09 | 2021-08-31 | 安徽江淮汽车集团股份有限公司 | Engine super-knock difference verification method |
| CN113190915B (en) * | 2021-04-19 | 2022-07-22 | 东风柳州汽车有限公司 | Vehicle strength evaluation method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10159700A (en) * | 1996-11-29 | 1998-06-16 | Ngk Spark Plug Co Ltd | Knocking detecting system |
| CN101285431A (en) * | 2007-04-09 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Method for combined pulse spectrum controlling engine |
| DE102010003305A1 (en) * | 2010-03-25 | 2011-09-29 | Bayerische Motoren Werke Aktiengesellschaft | Method for reducing risk of future irregular incineration e.g. super knocking, in loaded petrol engine of motor car, involves performing preventive measures for reducing probability of future occurrence of irregular incineration |
| CN104037619A (en) * | 2014-07-02 | 2014-09-10 | 株洲湘火炬火花塞有限责任公司 | Spark plug |
| CN204064550U (en) * | 2014-07-15 | 2014-12-31 | 清华大学 | Supercharging gasoline engine super detonation test unit |
| CN108150299A (en) * | 2017-12-23 | 2018-06-12 | 奇瑞汽车股份有限公司 | A kind of supercharging gasoline engine super detonation pre-control method and system |
-
2018
- 2018-09-25 CN CN201811119166.XA patent/CN109187028B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10159700A (en) * | 1996-11-29 | 1998-06-16 | Ngk Spark Plug Co Ltd | Knocking detecting system |
| CN101285431A (en) * | 2007-04-09 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Method for combined pulse spectrum controlling engine |
| DE102010003305A1 (en) * | 2010-03-25 | 2011-09-29 | Bayerische Motoren Werke Aktiengesellschaft | Method for reducing risk of future irregular incineration e.g. super knocking, in loaded petrol engine of motor car, involves performing preventive measures for reducing probability of future occurrence of irregular incineration |
| CN104037619A (en) * | 2014-07-02 | 2014-09-10 | 株洲湘火炬火花塞有限责任公司 | Spark plug |
| CN204064550U (en) * | 2014-07-15 | 2014-12-31 | 清华大学 | Supercharging gasoline engine super detonation test unit |
| CN108150299A (en) * | 2017-12-23 | 2018-06-12 | 奇瑞汽车股份有限公司 | A kind of supercharging gasoline engine super detonation pre-control method and system |
Non-Patent Citations (2)
| Title |
|---|
| 《增压直喷发动机用火花塞研究》;谢文杰 等;《中国高新技术企业》;20150131(第1期);第11-13页 * |
| 《增压缸内直喷汽油机早燃及超级爆震试验研究》;李元平 等;《内燃机工程》;20121031;第33卷(第5期);第63-66页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109187028A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Haenel et al. | Systematic approach to analyze and characterize pre-ignition events in turbocharged direct-injected gasoline engines | |
| US8447461B2 (en) | Particulate filter ash loading prediction method and vehicle with same | |
| CN109187028B (en) | Test evaluation method for engine super-knock safety margin design | |
| JP2008223764A (en) | Vehicle diagnosis system and method | |
| Lagana et al. | Identification of combustion and detonation in spark ignition engines using ion current signal | |
| Sun et al. | Knock recognition of knock sensor signal based on wavelet transform and variational mode decomposition algorithm | |
| Corti et al. | Application of Low-Cost Transducers for Indirect In-Cylinder Pressure Measurements | |
| Shimasaki et al. | Study on combustion monitoring system for formula one engines using ionic current measurement | |
| Hansen et al. | Heat release in the compression-ignition combustion of ethanol | |
| CN114635795B (en) | Method for monitoring fire of hybrid electric vehicle and hybrid electric vehicle | |
| US11047358B2 (en) | Systems and method for harmonizing knock in engine cylinders | |
| CN101033724B (en) | Failure diagnosis method of electrically controlled petrol engine fuel injector | |
| RU2681294C1 (en) | Compressograph and dynamic compressograph method | |
| KR101526881B1 (en) | Electronic control unit for vehicle and method for decision of engine tuning | |
| Zhou et al. | The significance of octane numbers to hybrid electric vehicles with turbocharged direct injection engines | |
| CN102606326A (en) | Method and system for ensuring faults of oil injector | |
| Yan et al. | Misfire detection on internal combustion engine based on fluctuation of exhaust gas temperature | |
| CN112065595B (en) | Natural gas engine combustion cycle control device based on ion current | |
| US6305352B1 (en) | Method for detecting an abnormal disturbance of an internal combustion engine torque | |
| Grimaldi et al. | Study of Ion Current Based Misfire Detection in Motorcycle Applications | |
| Chatterjee et al. | Comparison of misfire detection technologies in spark-ignition engines for meeting on-board diagnostic regulation | |
| CN108506138B (en) | Ignition control method and system of vehicle and vehicle | |
| CN112145270A (en) | Engine exhaust pressure electronic waveform detection and identification method and system | |
| Jahn et al. | Knock control on small four-two-wheeler engines | |
| CN112943466B (en) | Pre-ignition control method and system for flexible fuel engine, vehicle and storage medium |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |