CN206670920U - Engine cold test test device - Google Patents

Engine cold test test device Download PDF

Info

Publication number
CN206670920U
CN206670920U CN201720535439.3U CN201720535439U CN206670920U CN 206670920 U CN206670920 U CN 206670920U CN 201720535439 U CN201720535439 U CN 201720535439U CN 206670920 U CN206670920 U CN 206670920U
Authority
CN
China
Prior art keywords
engine
value
numerical value
data
module
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.)
Expired - Fee Related
Application number
CN201720535439.3U
Other languages
Chinese (zh)
Inventor
饶勇
孙发勇
熊俊杰
夏清华
邱强
李福�
方龙飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangling Motors Corp Ltd
Original Assignee
Jiangling Motors Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangling Motors Corp Ltd filed Critical Jiangling Motors Corp Ltd
Priority to CN201720535439.3U priority Critical patent/CN206670920U/en
Application granted granted Critical
Publication of CN206670920U publication Critical patent/CN206670920U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Testing Of Engines (AREA)

Abstract

It the utility model is related to engine cold test test device, including the port link block being sequentially connected, sensor detection module, information acquisition module, signal conversion module and a value output module, engine cold test test device is connected with each other with a tested engine by port link block, sensor detection module detects physical quantity corresponding to engine and detects data respectively, information acquisition module obtains physical quantity detection data, signal conversion module receives physical quantity detection data and converts thereof into corresponding electrical signal data, value output module receives electrical signal data and converts thereof into actual physical numerical value, then judge it whether within the scope of default value, result is differentiated corresponding to generation.The utility model all need not carry out thermal starting in the test process of whole engine to engine, therefore noise when can to the full extent reduce environmental pollution and greatly reduce test job, meet the demand of actual test.

Description

Engine cold test test device
Technical field
It the utility model is related to the cold examination technical field of automobile engine, more particularly to a kind of engine cold test test device.
Background technology
With the very fast development of auto manufacturing technology, requirement of the people to the total quality and configuration level of automobile is also got over Come stricter.Engine is as the core component in automobile, and the quality of its quality directly determines the service life of automobile, therefore Requirement to its capability and performance is also more harsh.
, it is necessary to comprehensively be tested the overall performance of automobile before automobile dispatches from the factory.In general, to automobile engine For, currently used detection mode detects for heat examination (HotTest).Specifically, engine thermal test system is carrying out heat examination mistake Cheng Zhong, engine is transported to the overhead of line end on heat examination line by aerial automatic carriage first, confirmed in upper line end operator Control electric hoist to decline afterwards, engine is positioned on pipeline pallet, then Motor Number is read through barcode scanner, by reading Writing head write-in is installed on RF-tag on pallet, is conveyed in engine toward during heat examination platform, and operating personnel are by wire harness on pallet Joint inserts each sensor interface, is transported on testboard, and after connection water, oil, electricity, gas, igniting starts engine, in heating power Under state the test under each rotating speed or load condition is completed by technological requirement.
But engine thermal testing technology is in actual applications due to engine to be started, engine can cause in the running compared with Big noise, and environmental pollution is easily caused, do not meet green requirement.
Utility model content
Based on this, the purpose of this utility model is in order to propose a kind of new engine cold test test device, with maximum Reduced environmental pollution in degree and reduce noise, so as to meet the needs of actual test.
The utility model proposes a kind of engine cold test test device, for testing the performance parameter of an engine, wherein, Including port link block, sensor detection module, information acquisition module, signal conversion module and the numerical value being sequentially connected Output module, the port link block include wire harness connector and flywheel connector;
The engine cold test test device and an engine being tested are mutual by the port link block Connection;
The sensor detection module is used to detect the engine respectively in inactive state, fast state and low speed shape Corresponding physical quantity detects data and sends it to described information acquisition module under state;
Described information acquisition module is used to receive the physical quantity detection data and sends it to the signal modulus of conversion Block;
The signal conversion module is used to receive the physical quantity detection data, converts thereof into corresponding electrical signal data The electrical signal data is sent to the value output module afterwards;
The value output module is used to receive the electrical signal data and converts thereof into actual physical numerical value, then The actual physical numerical value is judged whether within the scope of default value, is generated described corresponding to corresponding differentiation result and output Actual physical numerical value.
The engine cold test test device, wherein, the wire harness connector is surveyed the engine cold test by wire harness The engine that trial assembly is put and is tested is attached, and the flywheel connector is fixedly connected with a flywheel, the flywheel and institute State and be connected between engine, the flywheel drives the engine to be rotated under the driving effect of a motor.
The engine cold test test device, wherein, the wire harness connector includes power connector, signal triggering connection Head, bonding in vacuum head, fuel pump connector and turbocharging exhaust connector.
The engine cold test test device, wherein, the sensor detection module includes torque sensor, pressure sensing Device, flow sensor, vacuum sensor, angular transducer and oil pressure sensor, the engine is detected respectively described Inactive state, the fast state and moment values under the lower-speed state, fuel rail pressure value, fuel rail flow value, enter Gas vacuum degree, rotation angle value and oil pressure value.
The engine cold test test device, wherein, the sensor detection module also includes a velocity sensor, temperature Sensor and frequency sensor, the engine is detected respectively in the inactive state, the fast state and described low Tachometer value, machine cylinder temperature value and detonation frequency under fast state.
The engine cold test test device, wherein, the value output module includes the numerical value confirmation form being connected with each other Member and numerical value comparing unit;
The numerical value confirmation unit receives the electrical signal data, converts thereof into transmission after the actual physical numerical value To the numerical value comparing unit;
Whether the numerical value comparing unit receives the actual physical numerical value, judge the actual physical numerical value in present count Within the scope of value, generate corresponding differentiation result and export the actual physical numerical value.
The engine cold test test device, wherein, described device also includes a data disaply moudle, and the data are shown Module is connected with the value output module, and the data disaply moudle shows the differentiation result and the actual physical number Value.
The engine cold test test device, wherein, the data disaply moudle includes the first LED instructions being connected with each other Lamp and the second LED light;
First LED light is used for when the numerical value comparing unit judges the actual physical numerical value described default When within number range, first LED light is in flicker state;
Second LED light is used for when the numerical value comparing unit judges the actual physical numerical value described default When outside number range, second LED light is in flicker state.
The engine cold test test device, wherein, stating device also includes a data storage module, and the data preserve mould Block includes data storage cell and the data transmission unit being connected with each other;
The data storage cell stores the actual physical numerical value and the corresponding differentiation result;
The data transmission unit sends the actual physical numerical value and the corresponding differentiation result to a terminal.
The engine cold test test device, wherein, described device is an engine cold test stand.
The utility model proposes engine cold test test device, by Single port link block by cold trial assembly put and one hair Motivation, which is attached and then the physical quantity of detection is detected into data by sensor detection module, is sent to information gathering mould Block, actual physical numerical value and corresponding differentiation are then obtained after signal conversion module and value output module are handled successively As a result.Because the engine need not all carry out thermal starting in whole process, therefore environment dirt can be reduced to the full extent Noise when contaminating and greatly reducing test job, meet the demand of actual test.
Brief description of the drawings
Fig. 1 is the structural representation of the engine cold test test device in the utility model first embodiment;
Fig. 2 is the structural representation of the engine cold test test device in the utility model second embodiment;
Fig. 3 is the structural representation of the engine cold test test device in the utility model 3rd embodiment.
Primary symbols explanation:
Port link block 10 Vacuum sensor 114
Sensor detection module 11 Angular transducer 115
Information acquisition module 12 Oil pressure sensor 116
Signal conversion module 13 Velocity sensor 117
Value output module 14 Temperature sensor 118
Data disaply moudle 15 Frequency sensor 119
Data storage module 16 Numerical value confirmation unit 141
Wire harness connector 101 Numerical value comparing unit 142
Flywheel connector 102 First LED light 151
Torque sensor 111 Second LED light 152
Pressure sensor 112 Data storage cell 161
Flow sensor 113 Data transmission unit 162
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in fact in many different forms It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model Open content more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more related Listed Items.
Referring to Fig. 1, a kind of engine cold test test device, for testing the performance parameter of an engine, wherein, including The port link block 10 that is sequentially connected, sensor detection module 11, information acquisition module 12, signal conversion module 13, numerical value The data disaply moudle 15 of output module 14 and one, the port link block 10 includes wire harness connector 101 and flywheel connects Joint 102, the engine cold test test device pass through the phase of port link block 10 with a tested engine Connect, the sensor detection module 11 detects the engine in inactive state, fast state and lower-speed state respectively Physical quantity detection data, described information acquisition module 12 obtain the institute detected by the sensor detection module 11 corresponding to lower State the physical quantity detection data of engine, the signal conversion module 13 receives physical quantity detection data and by its turn Change corresponding electrical signal data into, the value output module 14 receives the electrical signal data and converts thereof into true thing Numerical value is managed, then judges the actual physical numerical value whether within the scope of default value, differentiation result corresponding to generation is simultaneously defeated The actual physical numerical value corresponding to going out.
Specifically, during actual cold examination, first by the cold examination test device by the port link block 10 with One tested engine is attached, in the present embodiment, because the port link block 10 includes wire harness connector 101 And flywheel connector 102, the cold examination test device are attached with tested engine by wire harness connector 101, this Outside, the flywheel connector 102 is fixedly connected with a flywheel, is connected between the flywheel and the engine, described to fly Wheel drives the engine to be rotated under the driving effect of a motor.Herein it should be noted that according to the hair detected The difference of motivation model, it can correspond to and change various sizes of flywheel, under the driving effect of motor described in the flywheel drive Engine is operated.
During actually detected, because the sensor detection module 11 is connected with tested engine, examine respectively The engine corresponding physical quantity detection data under static, low speed and fast state are surveyed, specifically, the physical quantity detects Data include moment values, fuel rail pressure value, fuel rail flow value, intake vacuum value, the rotation angle value of the engine And oil pressure value.Then described information acquisition module gathers above-mentioned correlation values, is converted into pair through the signal conversion module 13 The electrical signal data answered and then the electrical signal data is converted into by actual physical number by the value output module 14 Value.After the actual physical numerical value has been obtained, the value output module 14 will determine that the actual physical numerical value whether Within the scope of default value, if within the scope of default value, judge that the item data corresponding to the engine meets Factory requires, if outside default value scope, judges that the item data corresponding to the engine does not meet requirement of dispatching from the factory, needs Reprocessed.
Referring to Fig. 2, for the engine cold test test device in second embodiment, its embodiment and above-mentioned the Roughly the same in one embodiment, it is differed only in, for the sensor detection module 11, including torque sensor 111st, pressure sensor 112, flow sensor 113, vacuum sensor 114, angular transducer 115 and oil pressure sensor 116.In addition, for the value output module 14, including the numerical value confirmation unit 141 and numeric ratio of interconnection are more single The electrical signal data is converted into the actual physical numerical value by member 142, the numerical value confirmation unit 141, the numeric ratio compared with Unit 142 judges the actual physical numerical value whether within the scope of default value, generates corresponding differentiation result and output pair The actual physical numerical value answered.
During actually detected, the torque sensor 111, pressure in the sensor detection module 11 pass Sensor 112, flow sensor 113, vacuum sensor 114, angular transducer 115 and oil pressure sensor 116 detect respectively Moment values of the engine under the inactive state, the fast state and the lower-speed state, fuel rail pressure value, Fuel rail flow value, intake vacuum value, rotation angle value and oil pressure value.
Further, since the wire harness connector 101 includes power connector, signal triggering connector, bonding in vacuum head, combustion Oil pump connector and turbocharging exhaust connector, in actually detected application, when the engine is static, it is necessary to right Following physical parameter in the engine is detected:The injection time of fuel injector and oil spout electric current, ignition voltage, timing System power, fuel pump electric current, fuel rail pressure value and oil pressure force value etc.;When the engine is low-speed running, need Following physical parameter in the engine is detected:Intake vacuum value, engine speed value, fuel rail pressure Value, fuel rail flow value and engine oil pressure changing value etc.;When the engine is to run at high speed, it is necessary to the engine In following physical parameter detected:Intake vacuum value, intake and exhaust timing angle, engine speed value, fuel rail pressure Value, fuel rail flow value, engine oil pressure changing value, high speed ignition voltage, turbocharger flow value, combustion knock frequency values And valve relief valve pressure value etc..
Detecting that the engine corresponding physical quantity under different conditions is examined by the sensor detection module 11 Survey after data, described information acquisition module 12 receives detected data, and is transferred to signal conversion module 13, the letter Number modular converter 13 by physical quantity detection data be converted to corresponding to electrical signal data send the value output module to 14, because the value output module 14 includes the numerical value confirmation unit 141 and numerical value comparing unit 142 of interconnection, its Described in numerical value confirmation unit 141 electrical signal data is converted into the actual physical numerical value, the numerical value comparing unit 142 judge the actual physical numerical value whether within the scope of default value, generate corresponding to corresponding differentiation result and output The actual physical numerical value.Specifically, work as the actual physical numerical value within the scope of default value, such as entering when engine Timing angle is vented when within the scope of default value, then judges that the item data meets requirement of dispatching from the factory, if in default value scope Outside, then judge that the item data does not meet requirement of dispatching from the factory, it is necessary to be reprocessed.
In addition, described device also includes a data disaply moudle 15, the data disaply moudle 15 and the numerical value Output module 14 is connected, and the data disaply moudle 15 shows the differentiation result and the actual physical numerical value, specifically, As described above, when the intake and exhaust timing angle of engine is when within the scope of default value, judge that the item data meets that dispatch from the factory will Ask, then corresponding display " detection is qualified " printed words on the data disaply moudle 15, and show the intake and exhaust timing angle simultaneously Angle value.Dispatched from the factory conversely, if the intake and exhaust timing angle of engine outside default value scope, judges that the item data is not met It is required that corresponding display " detection is unqualified " printed words on the data disaply moudle 15, and the intake and exhaust timing angle is shown simultaneously Angle value.
Referring to Fig. 3, for the engine cold test test device in 3rd embodiment, its embodiment and above-mentioned the Roughly the same in two embodiments, it is differed only in, and for the data disaply moudle 15, includes the first of interconnection The LED light 152 of LED light 151 and second, wherein when it is described differentiation result be the actual physical numerical value described pre- If when within number range, first LED light 151 is in flicker state;When the differentiation result is the true thing Numerical value is managed when outside the default value scope, second LED light 152 is in flicker state.At the same time, it is described Sensor detection module 11 also includes a velocity sensor 117, temperature sensor 118 and frequency sensor 119, detects respectively Tachometer value of the engine under the inactive state, the fast state and the lower-speed state, machine cylinder temperature value with And detonation frequency.Further, described device also includes a data storage module 16, and the data storage module 16 includes mutual The data storage cell 161 and data transmission unit 162 of connection, wherein, the data storage cell 161 stores described true Physical quantity and the corresponding differentiation result, the data transmission unit 162 is by the actual physical numerical value and correspondingly The differentiation result send to a server terminal, so as to simultaneously record multi-engined detection data.
Specifically, for the data disaply moudle 15, for example, when the detonation frequency of engine is in default value scope Within when, judge that the item data meets requirement of dispatching from the factory, then corresponding display " detection is qualified " printed words on the data disaply moudle 15, The detonation frequency value is shown simultaneously, now first LED light 151 is in flicker state.If the conversely, pinking of engine Frequency judges that the item data does not meet requirement of dispatching from the factory, corresponded on the data disaply moudle 15 aobvious outside default value scope Show " detection is unqualified " printed words, while show the detonation frequency value, now second LED light 152 is in flicker state.
Herein it should also be noted that, in the present embodiment, the engine cold test test device is an engine cold test Stand.
The utility model proposes engine cold test test device, by Single port link block by cold trial assembly put and one hair Motivation, which is attached and then the physical quantity of detection is detected into data by sensor detection module, is sent to information gathering mould Block, actual physical numerical value and corresponding differentiation are then obtained after signal conversion module and value output module are handled successively As a result.Because the engine need not all carry out thermal starting in whole process, therefore environment dirt can be reduced to the full extent Noise when contaminating and greatly reducing test job, meet the demand of actual test.
Above example only expresses several embodiments of the present utility model, and its description is more specific and detailed, but simultaneously Therefore the limitation to the utility model patent scope can not be interpreted as.It should be pointed out that the ordinary skill for this area For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this The protection domain of utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (10)

  1. A kind of 1. engine cold test test device, for testing the performance parameter of an engine, it is characterised in that including connecting successively Port link block, sensor detection module, information acquisition module, signal conversion module and the value output module connect, The port link block includes wire harness connector and flywheel connector;
    The engine cold test test device is connected with each other with a tested engine by the port link block;
    The sensor detection module is used to detect the engine respectively under inactive state, fast state and lower-speed state Corresponding physical quantity detects data and sends it to described information acquisition module;
    Described information acquisition module is used to receive the physical quantity detection data and sends it to the signal conversion module;
    The signal conversion module is used to receive the physical quantity detection data, converts thereof into after corresponding electrical signal data The electrical signal data is sent to the value output module;
    The value output module is used to receive the electrical signal data and converts thereof into actual physical numerical value, then judges Whether the actual physical numerical value generates described true corresponding to corresponding differentiation result and output within the scope of default value Physical quantity.
  2. 2. engine cold test test device according to claim 1, it is characterised in that the wire harness connector passes through wire harness The engine cold test test device and the tested engine are attached, the flywheel connector is fixedly connected with one Flywheel, it is connected between the flywheel and the engine, the flywheel drives the hair under the driving effect of a motor Motivation is rotated.
  3. 3. engine cold test test device according to claim 2, it is characterised in that the wire harness connector includes power supply Connector, signal triggering connector, bonding in vacuum head, fuel pump connector and turbocharging exhaust connector.
  4. 4. engine cold test test device according to claim 1, it is characterised in that the sensor detection module includes Torque sensor, pressure sensor, flow sensor, vacuum sensor, angular transducer and oil pressure sensor, are examined respectively Survey moment values, fuel rail pressure of the engine under the inactive state, the fast state and the lower-speed state Value, fuel rail flow value, intake vacuum value, rotation angle value and oil pressure value.
  5. 5. engine cold test test device according to claim 4, it is characterised in that the sensor detection module is also wrapped A velocity sensor, temperature sensor and frequency sensor are included, detects the engine respectively in the inactive state, described Fast state and tachometer value, machine cylinder temperature value and detonation frequency under the lower-speed state.
  6. 6. engine cold test test device according to claim 1, it is characterised in that the value output module includes phase The numerical value confirmation unit and numerical value comparing unit to connect;
    The numerical value confirmation unit receives the electrical signal data, converts thereof into the actual physical numerical value and sends afterwards to institute State numerical value comparing unit;
    Whether the numerical value comparing unit receives the actual physical numerical value, judge the actual physical numerical value in default value model Within enclosing, generate corresponding differentiation result and export the actual physical numerical value.
  7. 7. engine cold test test device according to claim 6, it is characterised in that described device also shows including a data Show module, the data disaply moudle is connected with the value output module, and the data disaply moudle shows the differentiation knot Fruit and the actual physical numerical value.
  8. 8. engine cold test test device according to claim 7, it is characterised in that the data disaply moudle includes phase The first LED light and the second LED light to connect;
    First LED light is used for when the numerical value comparing unit judges the actual physical numerical value in the default value Within the scope of when, first LED light is in flicker state;
    Second LED light is used for when the numerical value comparing unit judges the actual physical numerical value in the default value When outside scope, second LED light is in flicker state.
  9. 9. engine cold test test device according to claim 1, it is characterised in that described device also includes a data and protected Storing module, the data storage module include data storage cell and the data transmission unit being connected with each other;
    The data storage cell stores the actual physical numerical value and the corresponding differentiation result;
    The data transmission unit sends the actual physical numerical value and the corresponding differentiation result to a terminal.
  10. 10. engine cold test test device according to claim 1, it is characterised in that described device is that an engine is cold Test stand frame.
CN201720535439.3U 2017-05-12 2017-05-12 Engine cold test test device Expired - Fee Related CN206670920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720535439.3U CN206670920U (en) 2017-05-12 2017-05-12 Engine cold test test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720535439.3U CN206670920U (en) 2017-05-12 2017-05-12 Engine cold test test device

Publications (1)

Publication Number Publication Date
CN206670920U true CN206670920U (en) 2017-11-24

Family

ID=60370973

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720535439.3U Expired - Fee Related CN206670920U (en) 2017-05-12 2017-05-12 Engine cold test test device

Country Status (1)

Country Link
CN (1) CN206670920U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110082112A (en) * 2019-03-29 2019-08-02 路沃特(张家港)动力再制造科技有限公司 A kind of engine cold test test macro and test equipment
CN110530640A (en) * 2018-05-24 2019-12-03 上海华依科技集团股份有限公司 A kind of vapour, the full-automatic online cold examination equipment of diesel engine swinging cross and cold method for testing online

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110530640A (en) * 2018-05-24 2019-12-03 上海华依科技集团股份有限公司 A kind of vapour, the full-automatic online cold examination equipment of diesel engine swinging cross and cold method for testing online
CN110082112A (en) * 2019-03-29 2019-08-02 路沃特(张家港)动力再制造科技有限公司 A kind of engine cold test test macro and test equipment

Similar Documents

Publication Publication Date Title
US6092016A (en) Apparatus and method for diagnosing an engine using an exhaust temperature model
CN101307739B (en) Method and apparatus for monitoring an intake air filter
US20090024295A1 (en) System and method for remotely monitoring a turbocharged engine
CN103511396B (en) Based on oil hydraulic pump and the oil hydraulic motor reliability test of power recovery technology
CN206670920U (en) Engine cold test test device
CN101988440A (en) Method for controlling oil injection of diesel engine
US20090013687A1 (en) System and method for monitoring operation of a turbocharged engine
JP2016528416A (en) Method for vehicle
CN101435377A (en) Intake air temperature rationality diagnostic
CN107560863B (en) Test bench and method for testing performance of marine dual-fuel engine
US20110137573A1 (en) System and method for monitoring emissions from engines
CN113074937B (en) Gearbox testing system and method
CN208833511U (en) A kind of comprehensive detection platform of automobile engine performance
JP4163995B2 (en) Monitoring and diagnosis system
KR102457752B1 (en) Method of real time fault detection and diagnosis for onboard engine room and system for forperming the same
US11401881B2 (en) Fourier diagnosis of a charge cycle behavior of an internal combustion engine
Lus Vibro-acoustic methods in marine diesel engines diagnostics
CN108884793A (en) Abnormal detector, method for detecting abnormality and abnormality detection system
CN210426866U (en) Passive intelligent supercharger monitoring system
KR20210005823A (en) Misfiring cylinder detection method and device for reciprocating internal combustion engine using torsional vibration signal
CN217440164U (en) Gas leakage monitoring system of dual-fuel engine
CN107923817B (en) Operate the method for piston-mode motor and the structure of detection cylinder cover gasket failure
CN112145270A (en) Engine exhaust pressure electronic waveform detection and identification method and system
JP3339226B2 (en) Inspection apparatus and inspection method for vehicle engine
CN114352394B (en) Rationality diagnosis method for engine exhaust temperature sensor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171124