CN109914522B - High-temperature sectional protection method and device for excavator engine - Google Patents
High-temperature sectional protection method and device for excavator engine Download PDFInfo
- Publication number
- CN109914522B CN109914522B CN201910236214.1A CN201910236214A CN109914522B CN 109914522 B CN109914522 B CN 109914522B CN 201910236214 A CN201910236214 A CN 201910236214A CN 109914522 B CN109914522 B CN 109914522B
- Authority
- CN
- China
- Prior art keywords
- temperature
- engine
- heat dissipation
- rise gradient
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a high-temperature sectional protection method and a high-temperature sectional protection device for an excavator engine, which are divided into temperature rise gradient control and high-temperature emergency control, wherein a temperature sensor transmits a water temperature signal of the engine to a controller, and when the water temperature is higher than T1When the temperature rise gradient control is started, the controller firstly calculates the water temperature rise gradient, if the temperature rise gradient rises faster, the output power of the heat dissipation system is increased instead of increasing the power of the heat dissipation system after the temperature rises to a certain value, and when the water temperature is higher than T2And starting high-temperature emergency control, sending a signal by the controller, reducing the rotating speed of the engine to the lowest or idling speed, reducing the output power of the main pump of the excavator to the lowest, and sending an alarm signal at the same time. According to the high-temperature sectional protection method and device for the excavator engine, the high-temperature protection of the engine can be performed in advance by monitoring the water temperature rising gradient signal of the engine, and the probability of high-temperature damage of the engine caused by an emergency is reduced.
Description
Technical Field
The invention belongs to the technical field of high-temperature protection of engines, and particularly relates to a high-temperature sectional protection method and device for an excavator engine.
Background
The engine is overheated, which easily causes the faults such as cylinder scuffing and the like, and damages the engine. The engine provided on the excavator is generally provided with a heat dissipation system to enable the engine to work in a normal temperature range. However, due to the complex working condition of the excavator, the heat dissipation system is possibly damaged by the impact of splashed broken stones, so that the heat dissipation system is abnormal, the water temperature of the engine rises rapidly and finally exceeds the normal working temperature range, and the sudden abnormality needs to be treated in time to protect the engine.
Some prior art methods can already adjust the high temperature of the engine adaptively, and chinese patent application No. CN102061719B, patent name: an excavator overheating protection method is disclosed in Chinese patent application No. CN103628517B, patent name: excavator safety control system and method, chinese patent application No. CN202273263U, patent name: automatic warm-up and overheat protection controlling means, chinese patent application No. CN1178008C, patent name: control device for construction machine, chinese patent application No. CN201320249607.4, patent name: the heat dissipation system overheat protection device of the excavator adopts feasible measures for protecting the high temperature of the engine, when the water temperature of the engine rises, the heat dissipation capacity of the heat dissipation system can be increased, if the water temperature of the engine is overheated, the rotating speed, the power and the like of the engine can be reduced, but the methods do not provide a treatment method for suddenly overheating the water temperature of the engine, while the common engine overheat treatment method has a long process time, and when the methods are used, the irreversible damage of the engine can be caused.
Disclosure of Invention
The invention aims to provide a high-temperature sectional protection method and device for an excavator engine, which can carry out high-temperature protection on the engine in advance by monitoring a water temperature rising gradient signal of the engine, can provide emergency protection in time when the engine is abnormally high or suddenly overheated, reduces the high-temperature damage probability of the engine caused by an emergency and avoids the damage of the engine.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-temperature sectional protection method for an excavator engine comprises the following steps: the temperature sensor transmits the water temperature signal of the engine to the controller, and when the water temperature is higher than T1When the temperature rise gradient control is started, the controller calculates the temperature rise gradient, and if the temperature rise gradient exceeds the set temperature rise gradient of the controller, the heat dissipation capacity of the heat dissipation system is improved; when the water temperature is higher than T2When the high-temperature emergency control is started, the controller sends a signal to reduce the rotating speed of the engine to an idle speed or the lowest rotating speed and reduce the output power of the main pump of the excavator to the lowest, and meanwhile, the alarm is controlled to send an alarm signal.
Further, the process of the controller for calculating the temperature rise gradient is as follows: acquiring a real-time temperature value of the water temperature of the engine every 1s, and subtracting the temperature value of the previous time from the temperature value acquired in the next time to obtain a temperature gradient calculated at this time; summing the temperature gradient values continuously calculated for 5 times to obtain an average temperature rise gradient; and (3) carrying out iterative calculation on the real-time temperature value acquired every 1s to obtain an average temperature rise gradient value changing along with time, wherein the average temperature rise gradient value is used as a judgment standard of the temperature rise gradient, and the calculation formula is as follows:
in the formula (I), the compound is shown in the specification,
the real-time temperature value of the water temperature of the engine acquired at the nth time is T, and the average rising value of the water temperature every 5s is T, namely the rising speed of the water temperature.
Further, the water temperature rise rate T is higher than Δ T DEG C every 5s and the water temperature exceeds T DEG C1And then, carrying out temperature rise gradient control, and sending a control signal to the cooling fan by the controller, so as to increase the rotating speed of the cooling fan and improve the cooling capacity of the cooling system.
Further, the method can be used for preparing a novel materialWhen the controller monitors that the engine water temperature is higher than T1And (3) enabling high-temperature subsection protection, enabling temperature rise gradient control, calculating the temperature rise gradient of the controller, and calculating the rising speed of the water temperature, assuming: the water temperature was 92 ℃ at 0s and 93.5 ℃ at 5 s; at 93.5 ℃, the corresponding heat dissipation power of the heat dissipation system is assumed to be 20kW, and as the temperature rise gradient reaches 1.5 ℃, the temperature rise gradient is higher than the set temperature rise gradient of rising 1 ℃ every 5s, the controller sends out a control signal to control the heat dissipation power of the heat dissipation system to be increased to 25 Kw.
Furthermore, the heat dissipation capability of the heat dissipation system is controlled by the water temperature value of the engine and the temperature rise gradient together, wherein the priority of the temperature rise gradient control is high. When the temperature rise gradient value does not reach the set temperature rise gradient, the heat dissipation capacity of the heat dissipation system is related to the water temperature value; when the temperature rise gradient value reaches the set temperature rise gradient, the heat dissipation capacity of the heat dissipation system is larger than that corresponding to the water temperature at the moment, and the larger the temperature rise gradient value is, the larger the heat dissipation capacity exerted by the heat dissipation system is.
Furthermore, the reduction of the rotating speed of the engine and the reduction of the power of the main pump are asynchronous, the power of the main pump is reduced firstly, and the rotating speed of the engine is reduced after the power of the main pump is reduced to a certain value, so that the damage caused by the mismatching of the power of the engine at low rotating speed and the power of the main pump is prevented.
Furthermore, in the temperature rise gradient protection process, the power of the heat dissipation system, the power of the engine and the power of the main pump are calculated in a matching mode, and the basic condition is that the power of the heat dissipation system and the power of the main pump are not larger than the power of the engine. In the case where the engine has reached maximum power, the heat sink power is increased while the main pump power is decreased, and the power increase and decrease is gradual over time and not abrupt.
Further, the device comprises a temperature sensor, a heat dissipation system, a controller and an alarm, wherein the temperature sensor is placed in an engine water tank and used for testing the water temperature of an engine, the temperature sensor is connected with the input end of the controller and transmits the tested water temperature data of the engine to the controller for processing, and the output end of the controller is connected with the engine, the heat dissipation system, the alarm and the excavatorThe main pump is connected and used for controlling the rotating speed of the engine, the power of a heat dissipation system and the output power of the main pump of the excavator, the alarm is controlled by the controller to give an alarm, the temperature rise gradient calculation is performed by the controller, the opening and closing of the temperature rise gradient control and the high-temperature emergency control are controlled, the temperature sensor transmits a water temperature signal of the engine to the controller to be processed, and when the water temperature of the engine is higher than T1When the temperature rises, the controller controls the temperature rise gradient to start, the controller calculates the temperature rise gradient, if the water temperature rises at a speed higher than delta T DEG C every 5s, the rotating speed of the cooling fan is increased, the output power of the cooling system is increased, and the power of the cooling system is not increased when the temperature rises to a certain value; if the temperature sensor tests that the water temperature of the engine exceeds T2And continuing for 10s, the controller controls the high-temperature emergency protection to start, reduces the rotating speed of the engine to the lowest or idling speed, reduces the load power of the engine to the lowest, and controls the alarm to send out an alarm signal while the high-temperature emergency protection is started.
Further, the engine is provided with a circulating water heat dissipation system, and when the temperature sensor tests that the water temperature of the engine is lower than (T)1-20), the controller sends out control signals to control the rotation speed of the heat dissipation fan to be minimum, and when the water temperature is (T)1-20）- T1When the temperature rises, the controller sends out a control signal to control the rotating speed of the cooling fan to rise along with the rise of the water temperature; when the water temperature is higher than T2When the fan is in use, the controller sends out control signal to control the rotating speed of the heat radiation fan to be highest.
Further, presetting the water temperature of the engine to T2（T2<Before 105 ℃, the circulating water heat dissipation system reaches the maximum heat dissipation capacity, and circulating water for heat dissipation of the engine does not boil at 105 ℃.
Furthermore, the controller is connected with the cooling fan, the engine and the excavator main pump, and the controller can control the rotating speed of the cooling fan, the rotating speed of the engine and the output power of the excavator main pump.
Further, still include temperature sensor, controller, alarm, cooling system (radiator fan), temperature rise gradient control and high temperature emergency control, temperature sensor places in engine water tank for test engine water temperature, temperature sensor links to each other with the controller input and handles the engine water temperature data transmission to the controller of test, and control output end and engine, radiator fan, alarm and excavator main pump link to each other for control engine rotational speed, radiator fan rotational speed, excavator main pump output, controller control alarm reports to the police, and the controller can carry out temperature rise gradient calculation, control temperature rise gradient control and the opening and close of high temperature emergency control.
Further, the temperature sensor transmits a water temperature signal of the engine to the controller, and when the water temperature is higher than T1When the temperature rise gradient control is started, the controller firstly calculates the water temperature rise gradient, if the temperature rise gradient rises faster, the output power of the heat dissipation system is increased instead of increasing the power of the heat dissipation system after the temperature rises to a certain value, and when the water temperature is higher than T2And starting high-temperature emergency control, sending a signal by the controller, reducing the rotating speed of the engine to the lowest or idling speed, reducing the output power of the main pump of the excavator to the lowest, and sending an alarm signal at the same time.
Compared with the prior art, the invention has the beneficial effects that:
1. the rising speed of the water temperature of the engine is used as a judgment standard for starting high-temperature emergency control, so that the problems of over-high temperature rise and high-temperature protection delay of the engine caused by abnormity or failure of a circulating water heat dissipation system are prevented, and the engine is protected more timely;
2. when the engine is started under high-temperature emergency control, the engine still maintains a certain rotating speed, so that on one hand, a circulating water cooling system and a lubricating system can be maintained to operate, and the engine is further protected; on the other hand, the excavator can be guaranteed to complete certain actions, and secondary damage is prevented.
Drawings
FIG. 1 is a flowchart of example 1 of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
As shown in fig. 1, a high-temperature segment protection method for an excavator engine comprises the following steps: temperature sensor for engineThe water temperature signal is transmitted to the controller, and when the water temperature is higher than T1When the temperature rise gradient control is started, the controller calculates the temperature rise gradient, and if the temperature rise gradient exceeds the set temperature rise gradient of the controller, the heat dissipation capacity of the heat dissipation system is improved; when the water temperature is higher than T2When the high-temperature emergency control is started, the controller sends a signal to reduce the rotating speed of the engine to an idle speed or the lowest rotating speed and reduce the output power of the main pump of the excavator to the lowest, and meanwhile, the alarm is controlled to send an alarm signal.
The temperature rise gradient calculation process of the controller comprises the following steps: acquiring a real-time temperature value of the water temperature of the engine every 1s, and subtracting the temperature value of the previous time from the temperature value acquired in the next time to obtain a temperature gradient calculated at this time; summing the temperature gradient values continuously calculated for 5 times to obtain an average temperature rise gradient; and (3) carrying out iterative calculation on the real-time temperature value acquired every 1s to obtain an average temperature rise gradient value changing along with time, wherein the average temperature rise gradient value is used as a judgment standard of the temperature rise gradient, and the calculation formula is as follows:
in the formula (I), the compound is shown in the specification,
the real-time temperature value of the water temperature of the engine acquired at the nth time is T, and the average rising value of the water temperature every 5s is T, namely the rising speed of the water temperature.
The water temperature rises at a rate T higher than Δ T deg.C every 5s and the water temperature exceeds T1And then, carrying out temperature rise gradient control, and sending a control signal to the cooling fan by the controller, so as to increase the rotating speed of the cooling fan and improve the cooling capacity of the cooling system.
When the controller monitors that the water temperature of the engine is higher than T1And if the actual temperature rise gradient is higher than the set temperature rise gradient, the controller sends out a control signal to control the heat dissipation power of the heat dissipation system to be improved.
The heat dissipation capability of the heat dissipation system is controlled by the water temperature value and the temperature rise gradient of the engine together, wherein the priority of the temperature rise gradient control is high. When the temperature rise gradient value does not reach the set temperature rise gradient, the heat dissipation capacity of the heat dissipation system is related to the water temperature value; when the temperature rise gradient value reaches the set temperature rise gradient, the heat dissipation capacity of the heat dissipation system is larger than that corresponding to the water temperature at the moment, and the larger the temperature rise gradient value is, the larger the heat dissipation capacity exerted by the heat dissipation system is.
The engine rotating speed reduction and the main pump power reduction are asynchronous, the main pump power reduction is firstly carried out, the engine rotating speed reduction is carried out after the main pump power is reduced to a certain value, and the damage caused by the fact that the power of the engine in low rotating speed is not matched with the main pump power is prevented.
In the temperature rise gradient protection process, the power of the heat dissipation system, the power of the engine and the power of the main pump are calculated in a matching mode, and the basic condition is that the power of the heat dissipation system and the power of the main pump are not larger than the power of the engine. In the case where the engine has reached maximum power, the heat sink power is increased while the main pump power is decreased, and the power increase and decrease is gradual over time and not abrupt.
When the temperature sensor tests that the water temperature of the engine is lower than (T)1-20), the controller sends out control signals to control the rotation speed of the heat dissipation fan to be minimum, and when the water temperature is (T)1-20）- T1When the temperature rises, the controller sends out a control signal to control the rotating speed of the cooling fan to rise along with the rise of the water temperature; when the water temperature is higher than T2When the fan is in use, the controller sends out control signal to control the rotating speed of the heat radiation fan to be highest.
The utility model provides an excavator engine high temperature segmentation protection device, including temperature sensor, cooling system, controller and alarm, temperature sensor places in engine water tank for test engine water temperature, temperature sensor links to each other with the controller input and handles with the engine water temperature data transmission to the controller of test, the controller output links to each other with the engine, cooling system, alarm and excavator main pump, be used for controlling engine speed, cooling system power and excavator main pump output, report to the police through controller control alarm, carry out temperature rise gradient through the controller and calculate, control temperature rise gradient control and high temperature emergency control's the opening and close.
Example 1
A high-temperature sectional protection device for an excavator engine comprises a temperature sensor, a controller, a heat dissipation system (comprising a heat dissipation fan), an alarm, temperature rise gradient control and high-temperature emergency control, wherein the temperature sensor is placed in an engine water tank and used for testing the water temperature of the engine, the temperature sensor is connected with the input end of the controller and transmits the tested water temperature data of the engine to the controller for processing, the control output end of the temperature sensor is connected with the engine, the heat dissipation fan, the alarm and an excavator main pump and used for controlling the rotating speed of the engine, the rotating speed of the heat dissipation fan and the output power of the excavator main pump, the controller controls the alarm to give an alarm, the controller is also connected with the temperature rise gradient control and the high-temperature emergency control, the controller can carry out temperature rise gradient calculation and controls the on-off of the temperature rise gradient control, the controller controls the rotating speed of the cooling fan through temperature rise gradient instead of judging through a temperature value; in the traditional method, one temperature corresponds to one fan rotating speed, but in the invention, the rotating speed of the cooling fan is increased when the temperature rises faster, and the rotating speed of the fan is higher than the rotating speed corresponding to the temperature at the moment. The output end of the controller is also connected with a circulating water heat dissipation system of the engine.
As shown in figure 1, the high-temperature sectional protection method for the excavator engine comprises temperature rise gradient control and high-temperature emergency control, a temperature sensor in an engine water tank transmits a real-time signal of the water temperature of the engine to a controller for processing, and when the controller monitors that the water temperature of the engine is higher than T1When the temperature rises to a certain value, the output power of the heat dissipation system is increased instead of increasing the power of the heat dissipation system again after the temperature rises to a certain value, and when the water temperature is higher than T2And at the moment, the high-temperature emergency control is started, the controller sends a signal, the rotating speed of the engine is reduced to the lowest or idling speed, the output power of the main pump of the excavator is reduced to the lowest, and meanwhile an alarm signal is sent.
The temperature rise gradient calculation process is as follows:
acquiring a real-time temperature value of the water temperature of the engine every 1s, and subtracting the temperature value of the previous time from the temperature value acquired in the next time to obtain a temperature gradient calculated at this time; summing the temperature gradient values continuously calculated for 5 times to obtain an average temperature rise gradient; and (3) carrying out iterative calculation on the real-time temperature value acquired every 1s to obtain an average temperature rise gradient value changing along with time, wherein the average temperature rise gradient value is used as a judgment standard of the temperature rise gradient, and the calculation formula is as follows:
in the formula (I), the compound is shown in the specification,
the real-time temperature value of the engine water temperature collected at the nth time is T, the average rising value of the water temperature every 5s (water temperature rising speed) is obtained, if the water temperature rising speed T is higher than 1 ℃ every 5s, and the water temperature exceeds T1Then the temperature rise gradient control is carried out, the controller sends a control signal to the cooling fan, the rotating speed of the cooling fan is increased, and the cooling capacity is improved.
If the water temperature of the engine exceeds T2And continuing for 10s, starting high-temperature emergency control by the controller, reducing the rotating speed of the engine to the lowest or idling speed, sending a control signal to a main pump of the excavator by the controller, and reducing the output power of the main pump to the lowest, namely reducing the load power of the engine to the lowest; meanwhile, the controller starts a control signal to the circulating water cooling system to maintain the highest cooling capacity of the circulating water cooling system, and controls the alarm to send a high-temperature alarm signal while the high-temperature emergency control is started.
The working principle of the invention is as follows:
when the controller detects that the temperature of the engine water is higher than T through the temperature sensor1(90 ℃) later, starting temperature rise gradient control, calculating the temperature rise gradient by the controller, and calculating the rising speed of the water temperature, assuming that: the water temperature was 92 ℃ at 0s and 93.5 ℃ at 5 s; at 93.5 ℃, the corresponding heat dissipation power of the heat dissipation system is assumed to be 20kW due to temperature riseWhen the gradient reaches 1.5 ℃ and exceeds the set temperature rise gradient (the temperature rises by 1 ℃ every 5 s), the controller sends out a control signal to control the heat dissipation power of the heat dissipation system to be increased to 25 Kw; assuming that the engine has already exerted the maximum power of 100kW and the main pump originally absorbed power of 80kW, the main pump absorbed power is reduced to 75kW because the heat dissipation system power is increased.
When the controller detects that the temperature of the engine water is higher than T through the temperature sensor2(105 ℃) and last 10s after, high temperature emergency control starts, and the controller at first sends control signal, reduces the main pump absorbed power, after the main pump absorbed power reduces to a definite value, reduces engine speed to idle speed or minimum rotational speed again, reduces engine load power, and the power when the purpose is preventing the engine low-speed is unmatched with main pump power, causes further harm, and simultaneously, the controller drive alarm is reported to the police.
The parts which are not related to the present invention are all the prior art, and are not described herein.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A high-temperature sectional protection method for an excavator engine is characterized by comprising the following steps: the method comprises the following steps: the temperature sensor transmits the water temperature signal of the engine to the controller, and when the water temperature is higher than T1When the temperature rise gradient control is started, the controller calculates the temperature rise gradient, and if the temperature rise gradient exceeds the set temperature rise gradient of the controller, the heat dissipation capacity of the heat dissipation system is improved; when the water temperature is higher than T2When the high-temperature emergency control is started, the controller sends a signal to reduce the rotating speed of the engine to an idle speed or the lowest rotating speed and reduce the output power of the main pump of the excavator to the lowest, and meanwhile, the alarm is controlled to send an alarm signal;
when the temperature sensor tests that the water temperature of the engine is lower than (T)1-20), the controller sends out control signals to control the rotation speed of the heat dissipation fan to be minimum, and when the water temperature is (T)1-20)-T1When the temperature rises, the controller sends out a control signal to control the rotating speed of the cooling fan to rise along with the rise of the water temperature; when the water temperature is higher than T2When the fan is in use, the controller sends out control signal to control the rotating speed of the heat radiation fan to be highest.
2. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 1, wherein the protection method comprises the following steps: the temperature rise gradient calculation process of the controller comprises the following steps: acquiring a real-time temperature value of the water temperature of the engine every 1s, and subtracting the temperature value of the previous time from the temperature value acquired in the next time to obtain a temperature gradient calculated at this time; summing the temperature gradient values continuously calculated for 5 times to obtain an average temperature rise gradient; and (3) carrying out iterative calculation on the real-time temperature value acquired every 1s to obtain an average temperature rise gradient value changing along with time, wherein the average temperature rise gradient value is used as a judgment standard of the temperature rise gradient, and the calculation formula is as follows:
in the formula, TnThe real-time temperature value of the water temperature of the engine acquired at the nth time is T, and the average rising value of the water temperature every 5s is T, namely the rising speed of the water temperature.
3. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 2, wherein the protection method comprises the following steps: the water temperature rises at a rate T higher than Δ T deg.C every 5s and the water temperature exceeds T1And then, carrying out temperature rise gradient control, and sending a control signal to the cooling fan by the controller, so as to increase the rotating speed of the cooling fan and improve the cooling capacity of the cooling system.
4. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 1, wherein the protection method comprises the following steps: when the controller monitors that the water temperature of the engine is higher than T1And (3) enabling high-temperature subsection protection, enabling temperature rise gradient control, calculating the temperature rise gradient of the controller, and calculating the rising speed of the water temperature, assuming: the water temperature was 92 ℃ at 0s and 93.5 ℃ at 5 s; at 93.5 deg.C, the heat-dissipating system is corresponding toThe heat dissipation power is assumed to be 20kW, and the temperature rise gradient reaches 1.5 ℃, so that the temperature rise gradient is higher than the set temperature rise gradient of rising 1 ℃ every 5s, and the controller sends out a control signal to control the heat dissipation power of the heat dissipation system to be increased.
5. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 1, wherein the protection method comprises the following steps: the heat dissipation capacity of the heat dissipation system is jointly controlled by the water temperature value and the temperature rise gradient of the engine, wherein the priority of the temperature rise gradient control is high, and the heat dissipation capacity of the heat dissipation system is related to the water temperature value when the temperature rise gradient value does not reach the set temperature rise gradient; when the temperature rise gradient value reaches the set temperature rise gradient, the heat dissipation capacity of the heat dissipation system is larger than that corresponding to the water temperature at the moment, and the larger the temperature rise gradient value is, the larger the heat dissipation capacity exerted by the heat dissipation system is.
6. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 1, wherein the protection method comprises the following steps: the engine rotating speed reduction and the main pump power reduction are asynchronous, the main pump power reduction is firstly carried out, the engine rotating speed reduction is carried out after the main pump power is reduced to a certain value, and damage caused by mismatching of the power of the engine at low rotating speed and the main pump power is prevented.
7. The high-temperature subsection protection method for the engine of the excavator as claimed in claim 1, wherein the protection method comprises the following steps: in the temperature rise gradient protection process, the power of a heat dissipation system and the power of an engine and a main pump are calculated in a matching mode, the basic condition is that the power of the heat dissipation system plus the power of the main pump is not larger than the power of the engine, and when the power of the heat dissipation system is increased and the power of the main pump is reduced under the condition that the maximum power of the engine is reached, the power increase and reduction are gradual change in a certain time and are not abrupt change.
8. The utility model provides an excavator engine high temperature segmentation protection device which characterized in that: the high-temperature sectional protection method for the excavator engine according to any one of claims 1 to 7 is adopted, and comprises a temperature sensor, a heat dissipation system, a controller and an alarm, wherein the temperature sensor is placed in an engine water tank and used for testing the water temperature of the engine, the temperature sensor is connected with the input end of the controller and transmits the tested water temperature data of the engine to the controller for processing, the output end of the controller is connected with the engine, the heat dissipation system, the alarm and an excavator main pump and used for controlling the rotating speed of the engine, the power of the heat dissipation system and the output power of the excavator main pump, the alarm is controlled by the controller for alarming, the temperature rise gradient calculation is performed by the controller, and the opening and closing of the temperature rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236214.1A CN109914522B (en) | 2019-03-27 | 2019-03-27 | High-temperature sectional protection method and device for excavator engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236214.1A CN109914522B (en) | 2019-03-27 | 2019-03-27 | High-temperature sectional protection method and device for excavator engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109914522A CN109914522A (en) | 2019-06-21 |
| CN109914522B true CN109914522B (en) | 2021-06-04 |
Family
ID=66966998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236214.1A Active CN109914522B (en) | 2019-03-27 | 2019-03-27 | High-temperature sectional protection method and device for excavator engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109914522B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761896B (en) * | 2019-10-28 | 2021-10-08 | 徐州立方机电设备制造有限公司 | Method for preventing engine from being overhigh in temperature |
| CN110735712A (en) * | 2019-11-07 | 2020-01-31 | 徐州众信矿业科技有限公司 | mining equipment engine temperature detection and adjustment device and method |
| CN115163305A (en) * | 2022-05-31 | 2022-10-11 | 河南柴油机重工有限责任公司 | Diesel engine crankcase pressure monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008031752A (en) * | 2006-07-31 | 2008-02-14 | Shin Caterpillar Mitsubishi Ltd | Cooling fan in working machine |
| CN202644631U (en) * | 2012-06-15 | 2013-01-02 | 徐州徐工挖掘机械有限公司 | Automatic warming-up and overheating protection device of excavator |
| CN105259952A (en) * | 2015-10-10 | 2016-01-20 | 广西百特汽车技术有限公司 | Temperature control system and temperature control method of automobile engine |
| CN108661776A (en) * | 2018-04-04 | 2018-10-16 | 北京福田戴姆勒汽车有限公司 | Thermal management algorithm, entire car controller and the vehicle of entire car controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6392251B2 (en) * | 2014-01-21 | 2018-09-19 | 住友重機械工業株式会社 | Excavator management device and support device |
-
2019
- 2019-03-27 CN CN201910236214.1A patent/CN109914522B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008031752A (en) * | 2006-07-31 | 2008-02-14 | Shin Caterpillar Mitsubishi Ltd | Cooling fan in working machine |
| CN202644631U (en) * | 2012-06-15 | 2013-01-02 | 徐州徐工挖掘机械有限公司 | Automatic warming-up and overheating protection device of excavator |
| CN105259952A (en) * | 2015-10-10 | 2016-01-20 | 广西百特汽车技术有限公司 | Temperature control system and temperature control method of automobile engine |
| CN108661776A (en) * | 2018-04-04 | 2018-10-16 | 北京福田戴姆勒汽车有限公司 | Thermal management algorithm, entire car controller and the vehicle of entire car controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109914522A (en) | 2019-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109914522B (en) | High-temperature sectional protection method and device for excavator engine | |
| CN103095213B (en) | A kind of motor temperature guard method, electric machinery control device and electric system | |
| US8915127B2 (en) | Method and apparatus for diagnosing a coolant pump for an internal combustion engine | |
| CN110056422B (en) | Control method of electronic water pump of engine | |
| CN106229574B (en) | cooling method and system for battery pack | |
| CN108708847B (en) | Overpower protection method for inverter compressor | |
| CN111878212B (en) | Efficient hybrid engine cooling system and engine cooling method | |
| JP2001214783A (en) | Engine | |
| CN112031919B (en) | Engine cooling control method with double alarm functions | |
| US9599010B2 (en) | Cooling device for internal combustion engine, and cooling method for internal combustion engine | |
| CN111817503A (en) | Hybrid gearbox driving motor cooling system and control method | |
| US20160377022A1 (en) | Cooling device for internal combustion engine | |
| CN114046200B (en) | Anti-overheating cooling system of hybrid power engine and control method thereof | |
| MX2014009009A (en) | Method for controlling a vehicle engine. | |
| CN109306897B (en) | Method and system for controlling coolant using secondary coolant pump | |
| CN212671921U (en) | High-efficient thoughtlessly moves engine cooling system | |
| WO2024001185A1 (en) | Fan control method and apparatus, and work machine | |
| US20230150352A1 (en) | Oil Temperature Control Method, Controller, Powertrain, and Electric Vehicle | |
| CN114583661B (en) | Overheat protection method for motor of valve body and engine aftertreatment system | |
| CN103066821B (en) | Photovoltaic grid-connected inverter thermal protection method and system | |
| CN109591602B (en) | System and method for protecting locked rotor of driving motor of electric automobile | |
| JP2011027012A (en) | Device for controlling circulation amount of oil in internal combustion engine | |
| CN111384466B (en) | Water pump fault processing method and system in power battery thermal management system | |
| CN204804935U (en) | Automobile engine cooling system | |
| CN207195265U (en) | A kind of fan control device applied to machine tool chief axis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |