CN103742256B - Motor, engine supercharger guard method and device - Google Patents
Motor, engine supercharger guard method and device Download PDFInfo
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- CN103742256B CN103742256B CN201310724715.7A CN201310724715A CN103742256B CN 103742256 B CN103742256 B CN 103742256B CN 201310724715 A CN201310724715 A CN 201310724715A CN 103742256 B CN103742256 B CN 103742256B
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Abstract
The invention provides motor, engine supercharger guard method and device, wherein said engine supercharger guard method comprises: presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number is warning pressure value; The the second setting boost pressure number being obtained from pressure-temperature sensor is limited and turns round value; When motor is in steady state condition, the boost pressure data of Real-time Obtaining pressure-temperature sensor; Security alarm instruction is sent when boost pressure data arrive warning pressure value; Generate limit when boost pressure data arrival limit turns round value and turn round instruction.Pass through the embodiment of the present invention, can the force value of Real-Time Monitoring engine air inlet tube, thus can to give the alarm when can guarantee the purge valve malfunction of pressurized machine or carrying out limit turns round, so effectively eliminate the potential safety hazard that the purge valve malfunction due to pressurized machine causes.
Description
Technical field
The present invention relates to mechanical field, relate to motor, engine supercharger guard method and device in particular.
Background technique
Along with the increasingly stringent of motor emission regulation demands, the application of various After-treatment technics technology obtains to be popularized fast.Consider for cost control, a lot of motor producer adopts the turbosupercharger with common bleed valve in the selection of pressurized machine, recycle EGR(ExhaustGasRecycling on this basis, exhaust gas recirculatioon), the technology such as oxidizing catalytic converter, particulate filter or selective catalytic reduction meets the emissions requirements of various criterion.
To adopt EGR and to coordinate the motor of the common technology for Turbocharger Manufacturing route with bleed valve, need when carrying out Matching of Turbocharger to consider EGR driving force, like this, the turbosupercharger of less volute is mated with regard to needing the Economy of sacrifice motor height rotating speed part.Now, before improving whirlpool, pressure can better meet high EGR rate demand, but too increases the risk of turbocharger fails simultaneously.This is because turbosupercharger just may be caused to block hypervelocity and lost efficacy if bleed valve cannot normally be opened, that is, technological scheme of the prior art can make turbosupercharger have the possibility of inefficacy, thus causes potential safety hazard.
Summary of the invention
In view of this, the invention provides motor, engine supercharger guard method and device, to realize the object of the potential safety hazard avoiding the bleed valve due to pressurized machine to cause.
For achieving the above object, the invention provides following technological scheme:
A kind of engine supercharger guard method, comprising:
Presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number is warning pressure value; The the second setting boost pressure number being obtained from described pressure-temperature sensor is limited and turns round value;
When described motor is in steady state condition, the boost pressure data of pressure-temperature sensor described in Real-time Obtaining;
Security alarm instruction is sent when described boost pressure data arrive described warning pressure value; Generate limit when described limit turns round value turn round instruction when described boost pressure data arrive.
Preferably, in embodiments of the present invention, described steady state condition comprises:
Judge whether described motor is in steady state condition according to the relative speed variation of described motor in running, throttle variance ratio and fuel delivery variance ratio.
Preferably, in embodiments of the present invention, described the first default boost pressure number by the described pressure-temperature sensor be obtained from engine air inlet tube is warning pressure value, comprising:
During setting Calibration, the boost pressure data of described pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
Open aperture with described aperture basic value described bleed valve for starting point gradually reduces, obtain the boost pressure data of described pressure-temperature sensor simultaneously;
The motor cooperation line of described motor is generated according to the air inflow of described boost pressure data and described motor;
To work as described motor cooperation line when high-speed region reaches from blocking line 5%, the boost pressure data obtained are set to first and preset boost pressure number.
Preferably, in embodiments of the present invention, described being limited by the second setting boost pressure number being obtained from described pressure-temperature sensor, turns round value, comprising:
To work as described motor cooperation line when high-speed region reaches hypervelocity line, the boost pressure data obtained are set to second and preset boost pressure number.
Preferably, in embodiments of the present invention, also comprise:
Presetting the setting temperature data of the pressure-temperature sensor be obtained from the suction tude of motor is warning temperature value;
When described motor is in steady state condition, the temperature data of pressure-temperature sensor described in Real-time Obtaining;
Security alarm instruction is sent when described temperature data arrives described warning temperature value.
In embodiments of the present invention, additionally provide a kind of engine supercharger protective gear, comprising:
Threshold value setting module is warning pressure value for presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number; The the second setting boost pressure number being obtained from described pressure-temperature sensor is limited and turns round value;
Sensing data acquisition module, for when described motor is in steady state condition, the boost pressure data of pressure-temperature sensor described in Real-time Obtaining;
Instruction generation unit, for sending security alarm instruction when described boost pressure data arrive described warning pressure value; Generate limit when described limit turns round value turn round instruction when described boost pressure data arrive.
Preferably, in embodiments of the present invention, described threshold value setting module comprises:
Benchmark setting module, during for setting Calibration, the boost pressure data of described pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
Travel line generation module, for opening aperture with described aperture basic value described bleed valve for starting point gradually reduces, obtains the boost pressure data of described pressure-temperature sensor simultaneously; The motor cooperation line of described motor is generated according to the air inflow of described boost pressure data and described motor;
Warning pressure value acquisition module, for working as described motor cooperation line when high-speed region reaches from blocking line 5%, the boost pressure data obtained will be set to first and will preset boost pressure number.
Preferably, in embodiments of the present invention, described threshold value setting module also comprises:
Limit turns round value acquisition module, and for working as described motor cooperation line when high-speed region reaches hypervelocity line, the boost pressure data obtained will be set to second and preset boost pressure number.
Preferably, in embodiments of the present invention,
The setting temperature data of the pressure-temperature sensor be obtained from the suction tude of motor are also warning temperature value for presetting by described threshold value setting module;
Described sensing data acquisition module also for when described motor is in steady state condition, the temperature data of pressure-temperature sensor described in Real-time Obtaining;
Described instruction generation unit is also for sending security alarm instruction when described temperature data arrives described warning temperature value.
In embodiments of the present invention, additionally provide a kind of motor, comprising:
Threshold value setting module is warning pressure value for presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number; The the second setting boost pressure number being obtained from described pressure-temperature sensor is limited and turns round value;
Sensing data acquisition module, for when described motor is in steady state condition, the boost pressure data of pressure-temperature sensor described in Real-time Obtaining;
Instruction generation unit, for sending security alarm instruction when described boost pressure data arrive described warning pressure value; Generate limit when described limit turns round value turn round instruction when described boost pressure data arrive.
Known via above-mentioned technological scheme, the embodiment of the present invention make use of the temperature data and pressure data that the pressure-temperature sensor on engine air inlet tube obtains, by presetting pressure threshold on engine air inlet tube and temperature threshold, then in the running of motor by the pressure and temperature of real-time monitoring engine air inlet tube, send when temperature data and pressure data reach setting value and warn or carry out limit accordingly and turn round; Owing to passing through the embodiment of the present invention, can the force value of Real-Time Monitoring engine air inlet tube, thus can to give the alarm when can guarantee the purge valve malfunction of pressurized machine or carrying out limit turns round, so effectively eliminate the potential safety hazard that the purge valve malfunction due to pressurized machine causes.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the step schematic diagram of the guard method of engine supercharger described in the embodiment of the present invention;
The another step schematic diagram that Fig. 2 is the guard method of engine supercharger described in the embodiment of the present invention;
The another step schematic diagram that Fig. 3 is the guard method of engine supercharger described in the embodiment of the present invention;
The another step schematic diagram that Fig. 4 is the guard method of engine supercharger described in the embodiment of the present invention;
Fig. 5 is the schematic flow sheet of the guard method of engine supercharger described in the embodiment of the present invention;
Fig. 6 is the structural representation of the protective gear of engine supercharger described in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
When Matching of Turbocharger, mainly to consider the surge margin of motor cooperation line, blocking surplus, plateau nargin on the basis meeting engine test bench characteristic target capabilities, thus ensure Safety performance.When carrying out Matching of Turbocharger, in order to take into account middle low-speed performance, in the venting that the common bleed valve turbosupercharger of high-speed region often needs to a certain degree, if bleed valve final controlling element because of fault cannot normally open time, the risk of blocking hypervelocity will be there is, there is potential safety hazard, especially for EGR type, in order to take into account the EGR driving force of discharge areas during Matching of Turbocharger, relatively little volute can be adopted, now before whirlpool, pressure is higher, if cannot normally open at the high-speed region bleed valve of motor cooperation line, pressurized machine so will be caused to block hypervelocity lost efficacy.
In order to eliminate above-mentioned potential safety hazard, embodiments providing a kind of engine supercharger guard method, as shown in Figure 1, comprising:
S11, to preset first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number be warning pressure value; The the second setting boost pressure number being obtained from pressure-temperature sensor is limited and turns round value;
Inventor finds through research, cannot open constantly when bleed valve breaks down, can make the overpressure of engine air inlet tube or temperature too high, so just can learn that whether bleed valve is working properly by the pressure and temperature of monitoring engine air inlet tube, and can learn whether pressurized machine has the possibility that hypervelocity occurs to block because bleed valve breaks down thus.For this reason, make use of the pressure-temperature sensor that engine air inlet tube generally all can be provided with in the embodiment of the present invention, monitor the pressure of suction tude.
In order to whether the pressure or temperature of monitoring engine air inlet tube is too high, in embodiments of the present invention, having preset the first setting boost pressure number is warning pressure value, and has preset the second setting boost pressure number and be limited and turn round value;
In actual applications, when preset pressure warning value, concrete as shown in Figure 2, can comprise step:
When S21, setting Calibration, the boost pressure data of pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
S22, gradually reduce bleed valve with aperture basic value for starting point open aperture, obtain the boost pressure data of pressure-temperature sensor simultaneously;
S23, generate the motor cooperation line of motor according to boost pressure data and air input of engine by air;
S24, will work as motor cooperation line high-speed region reach from blocking line 5% time, the boost pressure data obtained be set to first preset boost pressure number.
Concrete, the boost pressure data that the embodiment of the present invention utilizes the pressure-temperature sensor on engine air inlet tube to obtain.According to the external characteristics target call of motor, obtaining boost pressure data in corresponding suction tude when Calibration is boost pressure basic value; Meanwhile, aperture opened by bleed valve when can also set Calibration is aperture basic value.Then, on this basis, progressively tighten bleed valve final controlling element initial tension of spring, open rotating speed point to make bleed valve and delay; Like this, under ensureing that the prerequisite blocking hypervelocity does not occur pressurized machine, along with the aperture of opening of bleed valve progressively reduces, the boost pressure in the suction tude of motor can be made progressively to raise, the boost pressure data that now real-time acquisition is simultaneously obtained by pressure-temperature sensor, like this, according to boost pressure continuous obtained in this course and air inflow, engine operating line can be generated by pressure ratio and flow rate calculation formulae discovery; By after engine operating line described point is in pressurized machine MAP, can by when engine operating line reaches from blocking line 5% surplus at high-speed region, the boost pressure data now obtained by pressure-temperature sensor are set to first and preset boost pressure number, this first default boost pressure number is warning pressure value.
In actual applications, be limited by the second setting boost pressure number being obtained from pressure-temperature sensor when turning round value, concrete as shown in Figure 3, can comprise step:
The boost pressure data of S31, setting Calibration pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
S32, gradually reduce bleed valve with aperture basic value for starting point open aperture, obtain the boost pressure data of pressure-temperature sensor simultaneously;
S33, generate the motor cooperation line of motor according to boost pressure data and air input of engine by air;
S34, will work as motor cooperation line high-speed region reach hypervelocity line time, the boost pressure data obtained be set to second preset boost pressure number.
Concrete, the boost pressure data that the embodiment of the present invention utilizes the pressure-temperature sensor on engine air inlet tube to obtain.According to the external characteristics target call of motor, obtaining boost pressure data in corresponding suction tude when Calibration is boost pressure basic value; Meanwhile, aperture opened by bleed valve when can also set Calibration is aperture basic value.Then, on this basis, progressively tighten bleed valve final controlling element initial tension of spring, open rotating speed point to make bleed valve and delay; Like this, under ensureing that the prerequisite blocking hypervelocity does not occur pressurized machine, along with the aperture of opening of bleed valve progressively reduces, the boost pressure in the suction tude of motor can be made to raise, the boost pressure data that now real-time acquisition is simultaneously obtained by pressure-temperature sensor, like this, according to boost pressure continuous obtained in this course and air inflow, pressure ratio and flow rate calculation formulae discovery engine operating line can be generated; After described engine operating line described point is in pressurized machine MAP, can by when engine operating line reaches hypervelocity line at high-speed region, the boost pressure data now obtained by pressure-temperature sensor are set to second and preset boost pressure number, namely this second default boost pressure number is limited and turns round value.
S12, when motor is in steady state condition, the boost pressure data of Real-time Obtaining pressure-temperature sensor;
When motor is in steady state condition, whether the boost pressure data of the pressure-temperature sensor obtained can characterize bleed valve is fault.In order to monitor bleed valve at any time, in the embodiment of the present invention, when motor is in steady state condition, the boost pressure data of Real-time Obtaining pressure-temperature sensor.
In actual applications, can judge whether described motor is in steady state condition according to the relative speed variation of the described motor in running, throttle variance ratio and fuel delivery variance ratio.
S13, when boost pressure data arrive warning pressure value time send security alarm instruction; Generate limit when boost pressure data arrival limit turns round value and turn round instruction.
When the boost pressure data of Real-time Obtaining pressure-temperature sensor arrive warning pressure value or limit turn round value time, now show that bleed valve there occurs fault.
Concrete, by sending security alarm instruction when boost pressure data arrive warning pressure value, thus staff can be warned timely, can overhaul bleed valve timely to make staff, and then can fix a breakdown timely, avoid the potential safety hazard because purge valve malfunction brings.
In addition, generate limit during by arriving limit when boost pressure data and turning round value and turn round instruction, thus limit being further closed of bleed valve, thus effectively avoid the potential safety hazard that purge valve malfunction brings; In actual applications, turning round instruction by automatically generating limit, motor can be avoided and run at dangerous working condition, automatically start limp-home mode to reach protective action, staff can also be pointed out to overhaul bleed valve simultaneously.
Further, in embodiments of the present invention, as shown in Figure 4, step can also be comprised:
S41, to preset be warning temperature value by the setting temperature data of the pressure-temperature sensor be obtained from the suction tude of motor;
Whether the work that the temperature due to suction tude also can characterize bleed valve is normal, for this reason, in embodiments of the present invention, can also default settings temperature data be warning temperature value.
S42, when motor is in steady state condition, the temperature data of Real-time Obtaining pressure-temperature sensor;
In order to monitor bleed valve at any time, in the embodiment of the present invention, when being in steady state condition when motor, the temperature data of Real-time Obtaining pressure-temperature sensor.
S43, when temperature data arrive warning temperature value time send security alarm instruction.
When the boost pressure data of Real-time Obtaining pressure-temperature sensor arrive warning temperature, now show that bleed valve there occurs fault.
Concrete, by sending security alarm instruction when temperature data arrives warning temperature value, thus staff can be warned timely, can overhaul bleed valve timely to make staff, and then can fix a breakdown timely, avoid the potential safety hazard because purge valve malfunction brings.
In actual applications, the idiographic flow of the embodiment of the present invention can as shown in Figure 5, comprise:
Motor brings into operation;
Judge whether motor is in steady state condition;
When motor is in steady state condition, carry out bleed valve status monitoring;
Security alarm instruction is sent when boost pressure data arrive warning pressure value;
Generate limit when boost pressure data arrival limit turns round value and turn round instruction.
Known via above-mentioned technological scheme, the embodiment of the present invention make use of the temperature data and pressure data that the pressure-temperature sensor on engine air inlet tube obtains, by presetting pressure threshold on engine air inlet tube and temperature threshold, then in the running of motor by the pressure and temperature of real-time monitoring engine air inlet tube, send when temperature data and pressure data reach setting value and warn or carry out limit accordingly and turn round; Owing to passing through the embodiment of the present invention, can the force value of Real-Time Monitoring engine air inlet tube, thus can to give the alarm when can guarantee the purge valve malfunction of pressurized machine or carrying out limit turns round, so effectively eliminate the potential safety hazard that the purge valve malfunction due to pressurized machine causes.
In another embodiment of the invention, additionally provide a kind of engine supercharger protective gear, as shown in Figure 6, comprising:
Threshold value setting module 01 is warning pressure value for presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number; The the second setting boost pressure number being obtained from pressure-temperature sensor 04 is limited and turns round value; Sensing data acquisition module 02, for when motor is in steady state condition, the boost pressure data of Real-time Obtaining pressure-temperature sensor 04; Instruction generation unit 03, for sending security alarm instruction when boost pressure data arrive warning pressure value; Generate limit when boost pressure data arrival limit turns round value and turn round instruction.
In order to whether the pressure or temperature of monitoring engine air inlet tube is too high, in embodiments of the present invention, it is warning pressure value that passing threshold setting module 01 has preset the first setting boost pressure number, and has preset the second setting boost pressure number and be limited and turn round value;
In actual applications, concrete can the comprising of threshold value setting module 01:
Benchmark setting module, during for setting Calibration, the boost pressure data of pressure-temperature sensor 04 are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
Travel line generation module, opens aperture for what gradually reduce bleed valve with aperture basic value for starting point, obtains the boost pressure data of pressure-temperature sensor 04 simultaneously; The motor cooperation line of motor is generated according to boost pressure data and air input of engine by air;
Warning pressure value acquisition module, for working as motor cooperation line when high-speed region reaches from blocking line 5%, the boost pressure data obtained will be set to first and will preset boost pressure number.
Concrete, the boost pressure data that the embodiment of the present invention utilizes the pressure-temperature sensor on engine air inlet tube to obtain.According to the external characteristics target call of motor, benchmark setting module obtains boost pressure data in corresponding suction tude when Calibration be boost pressure basic value; Meanwhile, aperture opened by bleed valve when benchmark setting module can also set Calibration is aperture basic value.Then, on this basis, progressively tighten bleed valve final controlling element initial tension of spring, open rotating speed point to make bleed valve and delay; Like this, under ensureing that the prerequisite blocking hypervelocity does not occur pressurized machine, along with the aperture of opening of bleed valve progressively reduces, the boost pressure in the suction tude of motor can be made to raise, the boost pressure data that now real-time acquisition is simultaneously obtained by pressure-temperature sensor, like this, according to boost pressure continuous obtained in this course and air inflow, travel line generation module can generate engine operating line according to pressure ratio and flow rate calculation formulae discovery; After engine operating line described point is in pressurized machine MAP, warning pressure value acquisition module will work as engine operating line when high-speed region reaches from blocking line 5% surplus, the boost pressure data obtained by pressure-temperature sensor are set to first and preset boost pressure number, and this first default boost pressure number is warning pressure value.
Threshold value setting module can also comprise limit and turns round value acquisition module in actual applications, limit turn round value acquisition module for will work as motor cooperation line high-speed region reach exceed the speed limit line time, the boost pressure data obtained are set to the second default boost pressure number.
Concrete limit turns round value acquisition module for working as engine operating line when high-speed region reaches hypervelocity line, and the boost pressure data obtained by pressure-temperature sensor are set to second and preset boost pressure number, and namely this second default boost pressure number is limited and turns round value.
Sensing data acquisition module 02 is for when motor is in steady state condition, and the boost pressure data of Real-time Obtaining pressure-temperature sensor, are specially:
When motor is in steady state condition, whether the boost pressure data of the pressure-temperature sensor 04 obtained can characterize bleed valve is fault.In order to monitor bleed valve at any time, in the embodiment of the present invention, when motor is in steady state condition, the boost pressure data of sensing data acquisition module 02 Real-time Obtaining pressure-temperature sensor 04.
In actual applications, can judge whether described motor is in steady state condition according to the relative speed variation of the described motor in running, throttle variance ratio and fuel delivery variance ratio.
Instruction generation unit 03, for sending security alarm instruction when boost pressure data arrive warning pressure value; Generate limit when boost pressure data arrival limit turns round value and turn round instruction, concrete:
When the boost pressure data of Real-time Obtaining pressure-temperature sensor 04 arrive warning pressure value or limit turn round value time, now show that bleed valve there occurs fault.
Concrete, security alarm instruction is sent when boost pressure data arrive warning pressure value by instruction generation unit 03, thus staff can be warned timely, can overhaul bleed valve timely to make staff, and then can fix a breakdown timely, avoid the potential safety hazard because purge valve malfunction brings.
In addition, generate limit by instruction generation unit 03 when boost pressure data arrival limit turns round value and turn round instruction, thus limit being further closed of bleed valve, thus effectively avoid the potential safety hazard that purge valve malfunction brings.
Further, in embodiments of the present invention, can also comprise:
The setting temperature data of the pressure-temperature sensor 04 be obtained from the suction tude of motor are also warning temperature value for presetting by threshold value setting module 01;
Sensing data acquisition module 02 also for when motor is in steady state condition, the temperature data of Real-time Obtaining pressure-temperature sensor 04;
Security alarm instruction is sent instruction generation unit 03 is also for arriving described warning temperature value during when temperature data.
When the boost pressure data of Real-time Obtaining pressure-temperature sensor 04 arrive warning temperature, now show that bleed valve there occurs fault.
Concrete, by sending security alarm instruction when temperature data arrives warning temperature value, thus staff can be warned timely, can overhaul bleed valve timely to make staff, and then can fix a breakdown timely, avoid the potential safety hazard because purge valve malfunction brings.
In another embodiment of the invention, additionally provide a kind of motor, comprise the pressurized machine protective gear in embodiment corresponding to Fig. 6.
Pressurized machine protective gear included by the motor in the present embodiment is similar with the pressurized machine protective gear structure in embodiment corresponding to Fig. 6, and principle is identical, and the effect played is also identical, so just repeat no more at this.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For the device that embodiment provides, the method provided due to itself and embodiment is corresponding, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of provided embodiment, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle provided in this article and features of novelty.
Claims (8)
1. an engine supercharger guard method, is characterized in that, comprising:
Presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number is warning pressure value; The the second setting boost pressure number being obtained from described pressure-temperature sensor is limited and turns round value;
When described motor is in steady state condition, the boost pressure data of pressure-temperature sensor described in Real-time Obtaining;
Security alarm instruction is sent when described boost pressure data arrive described warning pressure value; Generate limit when described limit turns round value turn round instruction when described boost pressure data arrive;
Described the first default boost pressure number by the described pressure-temperature sensor be obtained from engine air inlet tube is warning pressure value, comprising:
During setting Calibration, the boost pressure data of described pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
Open aperture with described aperture basic value described bleed valve for starting point gradually reduces, obtain the boost pressure data of described pressure-temperature sensor simultaneously;
The motor cooperation line of described motor is generated according to the air inflow of described boost pressure data and described motor;
To work as described motor cooperation line when high-speed region reaches from blocking line 5%, the boost pressure data obtained are set to first and preset boost pressure number.
2. according to the guard method of engine supercharger described in claim 1, it is characterized in that, described steady state condition comprises:
Judge whether described motor is in steady state condition according to the relative speed variation of described motor in running, throttle variance ratio and fuel delivery variance ratio.
3. according to the guard method of engine supercharger described in claim 1, it is characterized in that, described being limited by the second setting boost pressure number being obtained from described pressure-temperature sensor, turns round value, comprising:
To work as described motor cooperation line when high-speed region reaches hypervelocity line, the boost pressure data obtained are set to second and preset boost pressure number.
4., according to the guard method of engine supercharger described in claim 1, it is characterized in that, also comprise:
Presetting the setting temperature data of the pressure-temperature sensor be obtained from the suction tude of motor is warning temperature value;
When described motor is in steady state condition, the temperature data of pressure-temperature sensor described in Real-time Obtaining;
Security alarm instruction is sent when described temperature data arrives described warning temperature value.
5. an engine supercharger protective gear, is characterized in that, comprising:
Threshold value setting module is warning pressure value for presetting first of the pressure-temperature sensor be obtained from the suction tude of motor the setting boost pressure number; The the second setting boost pressure number being obtained from described pressure-temperature sensor is limited and turns round value;
Sensing data acquisition module, for when described motor is in steady state condition, the boost pressure data of pressure-temperature sensor described in Real-time Obtaining;
Instruction generation unit, for sending security alarm instruction when described boost pressure data arrive described warning pressure value; Generate limit when described limit turns round value turn round instruction when described boost pressure data arrive;
Described threshold value setting module comprises:
Benchmark setting module, during for setting Calibration, the boost pressure data of described pressure-temperature sensor are boost pressure basic value; Aperture opened by bleed valve during setting Calibration is aperture basic value;
Travel line generation module, for opening aperture with described aperture basic value described bleed valve for starting point gradually reduces, obtains the boost pressure data of described pressure-temperature sensor simultaneously; The motor cooperation line of described motor is generated according to the air inflow of described boost pressure data and described motor;
Warning pressure value acquisition module, for working as described motor cooperation line when high-speed region reaches from blocking line 5%, the boost pressure data obtained will be set to first and will preset boost pressure number.
6. according to the protective gear of engine supercharger described in claim 5, it is characterized in that, described threshold value setting module also comprises:
Limit turns round value acquisition module, and for working as described motor cooperation line when high-speed region reaches hypervelocity line, the boost pressure data obtained will be set to second and preset boost pressure number.
7., according to the protective gear of engine supercharger described in claim 5, it is characterized in that,
The setting temperature data of the pressure-temperature sensor be obtained from the suction tude of motor are also warning temperature value for presetting by described threshold value setting module;
Described sensing data acquisition module also for when described motor is in steady state condition, the temperature data of pressure-temperature sensor described in Real-time Obtaining;
Described instruction generation unit is also for sending security alarm instruction when described temperature data arrives described warning temperature value.
8. a motor, is characterized in that, comprises as pressurized machine protective gear as described in arbitrary in claim 5 to 7.
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| CN201310724715.7A CN103742256B (en) | 2013-12-24 | 2013-12-24 | Motor, engine supercharger guard method and device |
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| CN104198168B (en) * | 2014-08-15 | 2017-01-18 | 潍柴动力股份有限公司 | Fault detecting method and device for control unit of engine exhaust gas valve |
| CN106321264A (en) * | 2016-08-23 | 2017-01-11 | 无锡隆盛科技股份有限公司 | Accurate EGR valve control method |
| CN109595149A (en) * | 2019-01-15 | 2019-04-09 | 上海汽车集团股份有限公司 | The automatic identifying method and system of engine supercharger surge |
| CN112282922B (en) * | 2020-10-27 | 2021-12-28 | 奇瑞汽车股份有限公司 | Method and device for detecting faults of pressure release valve |
| CN113266461B (en) * | 2021-06-08 | 2022-06-07 | 湖南道依茨动力有限公司 | Fault detection method, control device, turbocharger and engine system |
| CN113266460B (en) * | 2021-06-08 | 2022-06-07 | 湖南道依茨动力有限公司 | Abnormality monitoring method, control device, turbocharger, and engine system |
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