CN107989707A - Heavy-duty vehicle and its ECU, racing of the engine suppression system and suppressing method - Google Patents
Heavy-duty vehicle and its ECU, racing of the engine suppression system and suppressing method Download PDFInfo
- Publication number
- CN107989707A CN107989707A CN201711266325.4A CN201711266325A CN107989707A CN 107989707 A CN107989707 A CN 107989707A CN 201711266325 A CN201711266325 A CN 201711266325A CN 107989707 A CN107989707 A CN 107989707A
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- China
- Prior art keywords
- rotating speed
- engine
- cylinder inside
- inside brake
- racing
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/501—Vehicle speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of racing of the engine suppressing method applied to heavy-duty vehicle, including：Obtain the current rotating speed of vehicle motor；By the current rotating speed compared with default upper limit rotating speed, when the current rotating speed is more than the upper limit rotating speed, automated execution cylinder inside brake.Racing of the engine suppressing method provided by the present invention can start cylinder inside brake when rotating speed exceedes default upper limit rotating speed, forced brake is carried out to engine, reduce engine speed, engine can be controlled when engine speed controls from distributive value, avoid engine from rotating speed occur to fly to rush, improve the security of driving.
Description
Technical field
The present invention relates to Vehicle Engineering technical field, more particularly to a kind of heavy-duty vehicle and its ECU, racing of the engine suppress
System and suppressing method.
Background technology
Engine control system (Electronic control unit) abbreviation ECU, is the microcomputerized controller of automobile.Hair
Motivation control system can be controlled engine speed by varying distributive value, but in the feelings such as vehicle descending or abnormal gearshift
Under condition, although engine control system reduces distributive value and even interrupts fuel feeding, engine is still within overspeed condition, at this time easily
The failures such as valve answers back to piston, air valve bridge comes off are caused, hidden danger is brought to vehicle safety.
Therefore, how to provide engine be in from ECU distributive value control logic management and control in the case of remain to its into
The method of row control, the security risk for reducing vehicle is those skilled in the art's technical issues that need to address.
The content of the invention
The object of the present invention is to provide a kind of racing of the engine suppressing method applied to heavy-duty vehicle, it is closed in throttle
In the case of remain to be controlled engine speed.It is a further object of the present invention to provide one kind to use above-mentioned racing of the engine
The heavy-duty vehicle and its ECU of suppressing method, racing of the engine suppression system.
To achieve the above object, the present invention provides a kind of racing of the engine suppressing method applied to heavy-duty vehicle, including：
Obtain the current rotating speed of vehicle motor；
By the current rotating speed compared with default upper limit rotating speed, when the current rotating speed is more than the upper limit rotating speed
When, automated execution cylinder inside brake.
Preferably, further include：By the current rotating speed compared with default lower limit rotating speed, when the current rotating speed is small
When the lower limit rotating speed, cylinder inside brake is automatically terminated.
Preferably, after the execution cylinder inside brake, further include：Cylinder inside brake is currently executing to driver's prompting；
And/or after the releasing cylinder inside brake, further include：Currently cylinder inside brake has been released to driver's prompting.
Preferably, the upper limit rotating speed is specially any value in the range of 2000rpm~2500rpm.
Present invention also offers a kind of racing of the engine suppression system, including：
Current rotating speed acquisition module：For obtaining the current rotating speed of vehicle motor；
Judgment module：For by the current rotating speed compared with default upper limit rotating speed；
Cylinder inside brake execution module：For when the current rotating speed is more than the upper limit rotating speed, performing cylinder inside brake.
Preferably, further include：
Cylinder inside brake releases module：For when the current rotating speed is less than the lower limit rotating speed, releasing cylinder inside brake.
Preferably, further include：
Reminding module：For after cylinder inside brake is performed, cylinder inside brake to be currently executing to driver's prompting；With/
Or, after cylinder inside brake is released, currently cylinder inside brake is released to driver's prompting.
In addition, present invention also offers a kind of ECU applied to heavy-duty vehicle, including start described in above-mentioned any one
Machine hypervelocity suppression system.
In addition, present invention also offers a kind of heavy-duty vehicle, including vehicle body and the ECU arranged on the vehicle body, the ECU
Specially above-mentioned ECU.
Racing of the engine suppressing method provided by the present invention can measure engine speed, and the engine measured is turned
It is fast compared with the default rotating speed upper limit, once engine speed exceedes the default rotating speed upper limit, then start engine cylinder in
Braking, cylinder inside brake can more effectively reduce engine speed, and rotating speed occur so as to avoid engine flies to rush, and reduces car
Security risk.Therefore, racing of the engine suppressing method provided by the present invention can efficiently control engine speed, carry
The security of high vehicle.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structure diagram of cylinder inside brake；
Fig. 2 is the flow chart of inventive engine hypervelocity suppressing method；
Fig. 3 is a kind of structure diagram of embodiment racing of the engine suppression system of the present invention；
Fig. 4 is the design sketch of rack of the present invention verification.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings and it is embodied
The present invention is described in further detail for mode.
Please refer to Fig.1 to Fig. 4, Fig. 1 is the structure diagram of cylinder inside brake；Fig. 2 is inventive engine hypervelocity suppression side
The flow chart of method；Fig. 3 is a kind of structure diagram of embodiment racing of the engine suppression system of the present invention；Fig. 4 is this hair
The design sketch of bright rack verification.
For cylinder inside brake structure as shown in Figure 1, when cylinder inside brake starts, exhaust rocker arm 1 promotes brake piston 2 to move downward,
Brake piston 2 and then promotion perform pin 3 and move downward, and perform pin 3 and are contacted with exhaust valve 4, perform pin 3 and move downward and then can push away
Dynamic exhaust valve 4 moves downward, and exhaust valve 4 is opened in the case where performing the promotion of pin 3, and gas in the jar is released and drops in-cylinder pressure
Low, so as to produce negative torque to crank connecting link system, negative torque is with the original torque direction of engine on the contrary, bent axle is in negative torque
The lower velocity of rotation of effect reduces, and then realizes braking effect.
The present invention has carried out the control method of ECU perfect, and ECU provided by the present invention can be in vehicle motor rotating speed
Automatic start cylinder inside brake during more than distributive value control range, reduces engine speed, so as to avoid starting by cylinder inside brake
Machine rotating speed flies to rush.ECU monitors engine operating condition in real time, rotating speed judgement is carried out according to engine speed, if engine
Rotating speed then continues to monitor engine operating condition not less than default upper limit rotating speed；If engine speed exceedes upper limit rotating speed, ECU
Start cylinder inside brake, reduce engine speed, when engine speed reaches lower limit rotating speed, ECU then stops cylinder inside brake, passes through
Distributive value controls engine speed.
It is shown in Figure 2, realize that the method for the present invention includes following steps：
S1：Obtain the current rotating speed of vehicle motor.
The present invention will obtain the current rotating speed of engine, and work condition inspection is carried out to engine, is typically provided and starts in vehicle
Machine rotation-speed measuring device, the present invention obtain the current tachometer value of engine by engine speed measuring device.Engine speed
The structure of measuring device may be referred to the prior art, details are not described herein.
S2：By current rotating speed compared with default upper limit rotating speed, if current rotating speed is more than the upper limit rotating speed,
Perform cylinder inside brake.
After the present invention obtains the current rotating speed of engine, the current rotating speed progress rotating speed obtained according to current rotating speed module is sentenced
Fixed, by current rotating speed compared with default upper limit rotating speed, if current rotating speed exceedes upper limit rotating speed, cylinder inside brake performs
Module just controls exhaust rocker arm 1 to promote exhaust valve 3 to move downward and carries out cylinder inside brake.
It should be noted that upper limit rotating speed can also track vehicle actual measurement operating mode, according to actual measurement by artificially setting
The rotating speed that operating mode statistics accident is easily sent out, system easily send out the speed setting rotating speed upper limit according to accident, avoid vehicle from easily being sent out into accident
Rotating speed, and then more efficiently can avoid vehicle that accident occurs.Specifically, upper limit rotating speed is 2000rpm~2500rpm scopes
Interior any value.
S3：By current rotating speed compared with default lower limit rotating speed, if current rotating speed is less than the lower limit rotating speed,
Automatically terminate cylinder inside brake.
After cylinder inside brake starts, engine speed declines, if cylinder inside brake continuous action, eventually results in vehicle and stop
Only, the present invention can also by current rotating speed compared with default lower limit rotating speed, once current rotating speed is less than lower limit rotating speed, then
Control exhaust rocker arm 1, brake piston 2, execution pin 3 and exhaust valve 4 reset, and stop cylinder inside brake process.Usual lower limit rotating speed is low
In the rotating speed upper limit that ECU can be controlled by distributive value, after current rotating speed is less than lower rotation speed limit, ECU can continue through oil spout
Amount is controlled rotating speed, realizes the adapter to lower limit rotating speed.
S4：After performing cylinder inside brake, further include：Cylinder inside brake is currently executing to driver's prompting；And/or solution
After cylinder inside brake, further include：Currently cylinder inside brake has been released to driver's prompting.
To enable a driver to understand the current control situation of vehicle in time, the present embodiment is always according to the current braking of vehicle
State prompts driver, when vehicle is carrying out cylinder inside brake, prompts driver's cylinder inside brake to have been turned on, vehicle is just
Performing cylinder inside brake.It is of course also possible to driver's cylinder inside brake is prompted to release after cylinder inside brake releasing as needed.
The present embodiment is provided with upper limit rotating speed, and when the real-time rotating speed of engine exceedes upper limit rotating speed, racing of the engine suppresses
System can start cylinder inside brake to reduce engine speed, can be to hair when engine speed exceedes distributive value control range
Motivation rotating speed is effectively controlled, so that reducing engine the risk that rotating speed flies the accidents such as punching occurs.
Present invention also offers a kind of racing of the engine suppression system, as shown in figure 3, racing of the engine suppression system bag
Include：Current rotating speed acquisition module 301, judgment module 302, cylinder inside brake execution module 303.Wherein, current rotating speed acquisition module
The 301 current rotating speed for obtaining vehicle motor, current rotating speed acquisition module 301 usually turn with existing engine in vehicle
Speed measuring device is connected, and the current rotating speed of engine is obtained from rotation-speed measuring device；Judgment module 302 is for by current rotating speed and in advance
If upper limit rotating speed be compared, cylinder inside brake is judged whether to according to comparative result；Cylinder inside brake execution module 303 is used for
When current rotating speed is more than upper limit rotating speed, cylinder inside brake module 303 can drive exhaust rocker arm 1 to promote exhaust valve 4 to move downward,
Perform cylinder inside brake.
In order to stop cylinder inside brake, racing of the engine suppression system can also include cylinder inside brake and release module, be made in cylinder
The dynamic module that releases is used for when current rotating speed is less than lower limit rotating speed, and control exhaust rocker arm 1, brake piston 2, perform pin 3 and exhaust
Door 4 resets, so as to release cylinder inside brake.
In order to enable a driver to understand the control situation of vehicle in time, racing of the engine suppression system further comprises carrying
Show module, reminding module is used for after cylinder inside brake is performed, and cylinder inside brake is currently executing to driver's prompting；Prompt mould
Block can be also used for after cylinder inside brake is released, and currently cylinder inside brake has been released to driver's prompting, specifically, prompting mould
The available indicator light of block and/or buzzer etc. prompt driver.
The present invention is to the rack verification the verifying results of control of engine speed as shown in figure 4, default upper limit rotating speed is in Fig. 4
2400rpm, lower limit rotating speed are 2100rpm.It can be seen from the figure that when engine speed is more than 2400rpm, racing of the engine suppression
System processed prevents engine speed to continue to rise, and rapidly declines engine speed, so as to avoid engine from flying
Rush the generation of accident.
Heavy-duty vehicle and its ECU provided by the present invention, including the described racing of the engine suppression of above-mentioned specific embodiment
System processed and suppressing method；The other parts of vehicle and its ECU are referred to the prior art, not reinflated herein.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relation or order.
Heavy-duty vehicle provided by the present invention and its ECU, racing of the engine suppression system and suppressing method are carried out above
It is discussed in detail.Specific case used herein is set forth the principle of the present invention and embodiment, above example
Explanation be only intended to help understand the present invention method and its core concept.It should be pointed out that for the common of the art
For technical staff, without departing from the principle of the present invention, some improvement and modification can also be carried out to the present invention, these
Improve and modification is also fallen into the protection domain of the claims in the present invention.
Claims (9)
- A kind of 1. racing of the engine suppressing method applied to heavy-duty vehicle, it is characterised in that including：Obtain the current rotating speed of vehicle motor；By the current rotating speed compared with default upper limit rotating speed, when the current rotating speed is more than the upper limit rotating speed, Automated execution cylinder inside brake.
- 2. racing of the engine suppressing method according to claim 1, it is characterised in that further include：By the current rotating speed compared with default lower limit rotating speed, when the current rotating speed is less than the lower limit rotating speed, Automatically terminate cylinder inside brake.
- 3. racing of the engine suppressing method according to claim 2, it is characterised in thatAfter the execution cylinder inside brake, further include：Cylinder inside brake is currently executing to driver's prompting；And/orAfter the releasing cylinder inside brake, further include：Currently cylinder inside brake has been released to driver's prompting.
- 4. the racing of the engine suppressing method according to claims 1 to 3 any one, it is characterised in that the upper limit turns Speed is specially any value in the range of 2000rpm~2500rpm.
- A kind of 5. racing of the engine suppression system applied to heavy-duty vehicle, it is characterised in that including：Current rotating speed acquisition module：For obtaining the current rotating speed of vehicle motor；Judgment module：For by the current rotating speed compared with default upper limit rotating speed；Cylinder inside brake execution module：For when the current rotating speed is more than the upper limit rotating speed, automated execution cylinder inside brake.
- 6. racing of the engine suppression system according to claim 5, it is characterised in that further include：Cylinder inside brake automatically terminates module：For when the current rotating speed is less than the lower limit rotating speed, releasing cylinder inside brake.
- 7. racing of the engine suppression system according to claim 6, it is characterised in that further include：Reminding module：For after cylinder inside brake is performed, cylinder inside brake to be currently executing to driver's prompting；And/or when After releasing cylinder inside brake, currently cylinder inside brake has been released to driver's prompting.
- 8. a kind of ECU applied to heavy-duty vehicle, it is characterised in that including as described in 5~7 any one of the claims Racing of the engine suppression system.
- 9. a kind of heavy-duty vehicle, including vehicle body and the ECU arranged on the vehicle body, it is characterised in that the ECU is specially above-mentioned ECU described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266325.4A CN107989707A (en) | 2017-12-05 | 2017-12-05 | Heavy-duty vehicle and its ECU, racing of the engine suppression system and suppressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266325.4A CN107989707A (en) | 2017-12-05 | 2017-12-05 | Heavy-duty vehicle and its ECU, racing of the engine suppression system and suppressing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107989707A true CN107989707A (en) | 2018-05-04 |
Family
ID=62035603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711266325.4A Withdrawn CN107989707A (en) | 2017-12-05 | 2017-12-05 | Heavy-duty vehicle and its ECU, racing of the engine suppression system and suppressing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107989707A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267802A (en) * | 2020-03-11 | 2020-06-12 | 三一专用汽车有限责任公司 | Vehicle control method, vehicle control system and automobile |
| CN112832917A (en) * | 2021-02-09 | 2021-05-25 | 上海柴油机股份有限公司 | Anti-stall protection control method for engine of heavy-duty car |
| CN113431656A (en) * | 2021-07-28 | 2021-09-24 | 广西玉柴机器股份有限公司 | In-cylinder brake activation device, control method and automobile |
| CN115013519A (en) * | 2022-06-15 | 2022-09-06 | 潍柴动力股份有限公司 | Method and device for synchronously controlling rotating speed of upshifting engine |
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| CN101737222A (en) * | 2008-11-19 | 2010-06-16 | 奥迪股份公司 | Method for adjusting and reducing rotation speed of engine |
| CN103573439A (en) * | 2013-11-06 | 2014-02-12 | 东风康明斯发动机有限公司 | Method for electrically controlling rotating speed of engine |
| CN104153892A (en) * | 2014-05-16 | 2014-11-19 | 玉柴联合动力股份有限公司 | Integrated diesel engine capable of braking inside cylinder forced by external controller |
| CN106427985A (en) * | 2016-10-17 | 2017-02-22 | 金龙联合汽车工业（苏州）有限公司 | Method for in-cylinder brake control applied to hybrid power vehicle type |
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2017
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Patent Citations (5)
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| CN1675084A (en) * | 2002-08-19 | 2005-09-28 | 照井圣一 | Vehicle using automatic inertia traveling apparatus |
| CN101737222A (en) * | 2008-11-19 | 2010-06-16 | 奥迪股份公司 | Method for adjusting and reducing rotation speed of engine |
| CN103573439A (en) * | 2013-11-06 | 2014-02-12 | 东风康明斯发动机有限公司 | Method for electrically controlling rotating speed of engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267802A (en) * | 2020-03-11 | 2020-06-12 | 三一专用汽车有限责任公司 | Vehicle control method, vehicle control system and automobile |
| CN111267802B (en) * | 2020-03-11 | 2021-08-27 | 三一专用汽车有限责任公司 | Vehicle control method, vehicle control system and automobile |
| CN112832917A (en) * | 2021-02-09 | 2021-05-25 | 上海柴油机股份有限公司 | Anti-stall protection control method for engine of heavy-duty car |
| CN113431656A (en) * | 2021-07-28 | 2021-09-24 | 广西玉柴机器股份有限公司 | In-cylinder brake activation device, control method and automobile |
| CN115013519A (en) * | 2022-06-15 | 2022-09-06 | 潍柴动力股份有限公司 | Method and device for synchronously controlling rotating speed of upshifting engine |
| CN115013519B (en) * | 2022-06-15 | 2024-07-19 | 潍柴动力股份有限公司 | Method and device for synchronously controlling rotational speed of upshift engine |
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Application publication date: 20180504 |