CN110685788A - Electric control water pump control device and method for diesel engine - Google Patents
Electric control water pump control device and method for diesel engine Download PDFInfo
- Publication number
- CN110685788A CN110685788A CN201910915276.5A CN201910915276A CN110685788A CN 110685788 A CN110685788 A CN 110685788A CN 201910915276 A CN201910915276 A CN 201910915276A CN 110685788 A CN110685788 A CN 110685788A
- Authority
- CN
- China
- Prior art keywords
- water pump
- rotating speed
- controller
- electric control
- speed
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a device and a method for controlling an electric control water pump of a diesel engine, wherein the device comprises a silicone oil water pump and a controller, the silicone oil water pump is provided with a rotating speed sensor and an electric control clutch, the rotating speed sensor is used for detecting the actual rotating speed of a current water pump impeller and transmitting a measured value to the controller, the controller receives a signal and then carries out PID control and sends a PWM signal to the electric control clutch, and the controller is connected to a CAN line of a whole vehicle. The device and the method can meet the use requirements of the vehicle on the flow of the cooling liquid under different operating conditions, and can achieve the purposes of saving oil and reducing energy consumption.
Description
Technical Field
The invention relates to the field of vehicle manufacturing, in particular to a diesel engine electric control water pump control device and a control method.
Background
On medium and heavy duty vehicles, water pumps are used to provide coolant to components such as engine components, radiators, oil coolers and hydraulic retarders. The design of mechanical water pump performance is based on the critical point operating mode, satisfies the user demand under the biggest coolant flow operating mode promptly, and belongs to the redesign under many other operating modes, can reduce the coolant flow promptly under these operating modes. But the mechanical water pump widely used at present is rigidly connected with the engine, and the requirement is difficult to achieve.
Disclosure of Invention
In order to solve the problems, the invention discloses a control device and a control method for an electric control water pump of a diesel engine, which can meet the use requirements on the flow of cooling liquid under different running working conditions of a vehicle and achieve the aims of saving oil and reducing energy consumption.
The utility model provides an automatically controlled water pump control device of diesel engine, includes silicon oil water pump and controller, the silicon oil water pump disposes tachometric sensor and automatically controlled clutch, tachometric sensor is used for detecting the actual rotational speed of current water pump impeller and transmits the measured value to the controller, the controller is accepted and is carried out PID control and is sent the PWM signal to automatically controlled clutch after the signal, the controller is connected in whole car CAN line.
A control method for controlling the rotating speed of a water pump impeller by using an electric control water pump control device of a diesel engine comprises the following steps:
step 1, a controller reads the temperature of engine coolant, the temperature of air inlet, the rotating speed of an engine, the oil injection quantity, the opening degree of an accelerator pedal, the downstream temperature of an EGR valve, the opening degree of a defrosting control valve of a urea box, the exhaust braking state, the working state of a retarder and the on-off state of an air conditioner through a CAN (controller area network) line;
step 2, obtaining the target rotating speed of the silicone oil pump by looking up a table;
step 3, taking the maximum value of all the target rotating speeds of the silicone oil pumps to obtain the target rotating speed of the water pump environment;
step 4, subtracting the actual rotating speed from the final target rotating speed of the silicone oil pump, obtaining a closed-loop value through a PID (proportion integration differentiation) controller, and adding a preset value of open-loop control to obtain a PWM (pulse width modulation) signal;
step 5, the controller sends a PWM signal to the electric control clutch;
and 6, adjusting the opening degree of the electric control clutch according to the received PWM signal, further controlling the rotating speed of the impeller of the water pump, and finally realizing the control of the flow of the cooling liquid.
Preferably, the target rotation speed of the water pump in step 3 is determined as follows: when the rotating speed of the water pump is in a slip region, calculating the rotating speed by adopting the slip region; when the diagnosis system has faults, a fault-related default rotating speed is adopted.
The invention has the beneficial effects that:
the electric control water pump can accurately control the flow of the cooling liquid under different working conditions based on environmental conditions, running states of the vehicle and the engine and the characteristics of the water pump, meets the use requirements of the cooling liquid on the flow of the cooling liquid under different running conditions of the vehicle, and can achieve the purposes of saving oil and reducing energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first block diagram of the control logic of the present invention;
FIG. 2 is a second control logic block diagram of the present invention;
FIG. 3 is a third control logic block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides an electric control water pump control device and method suitable for a heavy-duty vehicle diesel engine. Wherein the rotating speed sensor and the electric control clutch are arranged on the water pump. The controller is connected to a vehicle CAN line, reads the temperature of engine coolant, the air inlet temperature, the engine rotating speed, the oil injection quantity, the opening degree of an accelerator pedal, the downstream temperature of an EGR valve, the opening degree of a defrosting control valve of a urea box, the exhaust braking state, the working state of a retarder, the on-off state of an air conditioner and the like, and outputs PWM signals to control the electric control clutch. As shown in the control logic block diagrams of fig. 1, fig. 2 and fig. 3, the specific control logic of the present invention is as follows:
the target speed of the water pump impeller is calculated based on environmental conditions, vehicle and engine operating conditions, and the characteristics of the water pump itself. As shown in fig. 1, the water pump environment target rotational speed is first calculated. The controller reads the temperature of the engine coolant, the air inlet temperature, the engine rotating speed, the oil injection quantity, the opening degree of an accelerator pedal, the downstream temperature of an EGR valve, the opening degree of a defrosting control valve of a urea box, the exhaust braking state, the working state of a retarder, the on-off state of an air conditioner and the like through a CAN (controller area network) line.
(1) And obtaining target rotating speeds 1 and 2 of the water pump through a table lookup according to the read cooling liquid temperatures 1 and 2. I.e., different coolant temperatures correspond to different target impeller speeds. Generally, the higher the coolant temperature, the greater the required coolant flow, and the higher the target impeller speed. The setting of 2 coolant temperature is that the different positions coolant temperature of considering the cooling cycle water route is different, can set up coolant temperature sensor in the different positions in cooling cycle water route.
(2) And obtaining target rotating speeds 3 and 4 of the water pump through a table look-up according to the read intake air temperatures 1 and 2. I.e. different inlet air temperatures correspond to different target impeller rotational speeds. Generally, the higher the intake air temperature, the larger the required coolant flow rate, and the higher the target impeller rotation speed. The 2 intake air temperatures are set by considering that the intake air temperatures at different positions of the intake pipeline are different, and intake air temperature sensors can be arranged at different positions of the intake pipeline.
(3) And obtaining the target rotating speed 5 of the water pump by looking up a table according to the operating condition of the engine, namely the read rotating speed and the fuel injection quantity of the engine.
(4) And obtaining the target rotating speed 6 of the water pump by looking up a table according to the read opening degree of the accelerator pedal. Generally, the larger the accelerator opening, the larger the required coolant flow rate, and the higher the target impeller rotation speed.
(5) And obtaining a target rotating speed 7 of the water pump through a table look-up according to the read downstream temperature of the EGR valve. Generally, the higher the temperature downstream of the EGR valve, the greater the required coolant flow, and the higher the target impeller speed.
(6) And obtaining the target rotating speed 8 of the water pump through table lookup according to the read opening degrees of other control valves of the cooling system.
(7) And obtaining the target rotating speed 9 of the water pump by looking up a table according to the read opening of the unfreezing control valve of the urea box. The urea box unfreezes through the cooling liquid, the larger the opening degree of the unfreezing control valve of the urea box is, the larger the flow rate of the required cooling liquid is, and the higher the target rotating speed of the impeller is.
(8) And obtaining the target rotating speed of the water pump according to the read exhaust braking state. When the exhaust brake is not activated, the target rotation speed of the water pump related to the exhaust brake is 0. When the exhaust brake is activated, the target water pump speed 10 is obtained by looking up the table according to the engine speed.
(9) And obtaining the target rotating speed 11 of the water pump according to the read working state of the retarder. When the retarder works, the flow of the required cooling liquid is large, and the target rotating speed of the impeller is high.
(10) And obtaining the target rotating speed 12 of the water pump according to the read air conditioner switch state. When the air conditioner works, the flow of the cooling liquid is required to be large, and the target rotating speed of the impeller is high.
And taking the maximum value of the target rotating speeds of all the water pumps to obtain the target rotating speed of the water pump environment.
As shown in fig. 2, according to the operating characteristics of the water pump, when the rotation speed of the water pump is in the slip region, the slip region is used to calculate the rotation speed. When faults exist in the diagnosis system, such as faults of the rotating speed sensor, short-circuit and open-circuit faults of the electrically controlled clutch and the like, fault-related default rotating speed is adopted. Namely:
(1) the system has no fault, and when the rotating speed of the water pump is not in a slip region, the final target rotating speed of the water pump = the target rotating speed of the water pump environment.
(2) When the system has a fault, the final target rotating speed of the water pump = fault-related default rotating speed.
(3) The system has no fault, and when the rotating speed of the water pump is in a slip region, the final target rotating speed of the water pump = the rotating speed calculated in the slip region.
As shown in fig. 3, after the final target rotation speed of the water pump is calculated, the actual rotation speed is subtracted from the final target rotation speed of the water pump, a closed-loop value is obtained through the PID controller, and a preset value of open-loop control is added to obtain a final required clutch opening PWM signal. The PWM signal controls the rotating speed of the impeller of the water pump by controlling the opening of the electric control clutch, thereby accurately controlling the flow of the cooling liquid.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The utility model provides a diesel engine electric control water pump controlling means, its characterized in that, includes silicon oil water pump and controller, the silicon oil water pump disposes speed sensor and automatically controlled clutch, speed sensor is used for detecting the actual rotational speed of current water pump impeller and transmits the measured value to the controller, the controller is accepted and is carried out PID control and send the PWM signal to automatically controlled clutch after the signal, the controller is connected in whole car CAN line.
2. A method for controlling the rotation speed of a water pump impeller by using an electrically controlled water pump control device for a diesel engine according to claim 1, comprising the steps of:
step 1, a controller reads the temperature of engine coolant, the temperature of air inlet, the rotating speed of an engine, the oil injection quantity, the opening degree of an accelerator pedal, the downstream temperature of an EGR valve, the opening degree of a defrosting control valve of a urea box, the exhaust braking state, the working state of a retarder and the on-off state of an air conditioner through a CAN (controller area network) line;
step 2, obtaining the target rotating speed of the silicone oil pump by looking up a table;
step 3, taking the maximum value of all the target rotating speeds of the silicone oil pumps to obtain the target rotating speed of the water pump environment;
step 4, subtracting the actual rotating speed from the final target rotating speed of the silicone oil pump, obtaining a closed-loop value through a PID (proportion integration differentiation) controller, and adding a preset value of open-loop control to obtain a PWM (pulse width modulation) signal;
step 5, the controller sends a PWM signal to the electric control clutch;
and 6, adjusting the opening degree of the electric control clutch according to the received PWM signal, further controlling the rotating speed of the impeller of the water pump, and finally realizing the control of the flow of the cooling liquid.
3. The method for controlling the rotation speed of an impeller of a water pump as claimed in claim 1, wherein the target rotation speed of the water pump in the step 3 is determined as follows: when the rotating speed of the water pump is in a slip region, calculating the rotating speed by adopting the slip region; when the diagnosis system has faults, a fault-related default rotating speed is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910915276.5A CN110685788A (en) | 2019-09-26 | 2019-09-26 | Electric control water pump control device and method for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910915276.5A CN110685788A (en) | 2019-09-26 | 2019-09-26 | Electric control water pump control device and method for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110685788A true CN110685788A (en) | 2020-01-14 |
Family
ID=69110296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910915276.5A Pending CN110685788A (en) | 2019-09-26 | 2019-09-26 | Electric control water pump control device and method for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110685788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022173A (en) * | 2020-03-05 | 2020-04-17 | 盛瑞传动股份有限公司 | Control system of electric control silicone oil clutch of internal combustion engine mechanical water pump |
| CN112483239A (en) * | 2020-12-01 | 2021-03-12 | 广西玉柴机器股份有限公司 | Method and system for controlling rotating speed of internal combustion engine electric control water pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110052425A1 (en) * | 2009-08-28 | 2011-03-03 | Hyundai Motor Company | Clutch water pump, control system thereof, and control method thereof |
| CN203809097U (en) * | 2014-04-02 | 2014-09-03 | 广西玉柴机器股份有限公司 | Intelligent thermal management system of diesel engine |
| CN104791070A (en) * | 2015-02-16 | 2015-07-22 | 东风（十堰）汽车制动件有限公司 | Electrically-controlled cooling water pump applicable to automotive internal combustion engine |
| CN105422250A (en) * | 2015-12-21 | 2016-03-23 | 东风贝洱热系统有限公司 | Eclectically-controlled silicon oil clutch water pump |
| CN108518268A (en) * | 2018-04-27 | 2018-09-11 | 东风贝洱热系统有限公司 | A kind of electric control silicone oil fan control method and controller |
-
2019
- 2019-09-26 CN CN201910915276.5A patent/CN110685788A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110052425A1 (en) * | 2009-08-28 | 2011-03-03 | Hyundai Motor Company | Clutch water pump, control system thereof, and control method thereof |
| CN203809097U (en) * | 2014-04-02 | 2014-09-03 | 广西玉柴机器股份有限公司 | Intelligent thermal management system of diesel engine |
| CN104791070A (en) * | 2015-02-16 | 2015-07-22 | 东风（十堰）汽车制动件有限公司 | Electrically-controlled cooling water pump applicable to automotive internal combustion engine |
| CN105422250A (en) * | 2015-12-21 | 2016-03-23 | 东风贝洱热系统有限公司 | Eclectically-controlled silicon oil clutch water pump |
| CN108518268A (en) * | 2018-04-27 | 2018-09-11 | 东风贝洱热系统有限公司 | A kind of electric control silicone oil fan control method and controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022173A (en) * | 2020-03-05 | 2020-04-17 | 盛瑞传动股份有限公司 | Control system of electric control silicone oil clutch of internal combustion engine mechanical water pump |
| CN112483239A (en) * | 2020-12-01 | 2021-03-12 | 广西玉柴机器股份有限公司 | Method and system for controlling rotating speed of internal combustion engine electric control water pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109236456B (en) | A kind of control method of variable air inlet grid | |
| CN106837509B (en) | A kind of fan rotational frequency control method and system | |
| CN102463975B (en) | For the vacuum servo of car brakeing | |
| CN104279306B (en) | Hybrid power automobile gearbox unit cooling system and cooling method | |
| CN102182540A (en) | Engine cooling system and temperature control method of cooling liquid thereof | |
| CN106696964B (en) | Heavy truck automatic gear-box crawling control system based on clutch target torque | |
| CN110848013B (en) | Intelligent thermal management system and control method for alcohol-diesel dual-fuel engine | |
| CN109572486A (en) | A kind of power battery for hybrid electric vehicle heat management system and control method | |
| CN207673424U (en) | Diesel altitude-variable cooling system with variable water flow | |
| CN109854354A (en) | Diesel altitude-variable cooling system with variable water flow and its control process | |
| CN110685788A (en) | Electric control water pump control device and method for diesel engine | |
| CN105114166A (en) | Milling machine engine thermal management system | |
| CN111561381A (en) | Intelligent closed-loop control heat management method for gasoline engine based on electric water pump | |
| CN211924280U (en) | Anti-freezing control system and vehicle | |
| CN214887340U (en) | Engine optimization cooling system based on fuel oil heat efficiency improvement | |
| CN204041199U (en) | The automatically controlled auxiliary coolant system of a kind of motor combined type | |
| CN201891484U (en) | Engineering machinery cooling fan and hydraulic and torque converter oil liquid flow rate control device | |
| CN105041446A (en) | Double-valve-element electronic thermostat based on vehicle type carrying hydrodynamic retarder | |
| CN209892320U (en) | Engine cooling system, engine and vehicle | |
| CN216002113U (en) | Pure electric vehicles cooling system based on VCU | |
| CN114183231A (en) | Engine cooling fan control method and system and engine cooling system | |
| CN203614200U (en) | Engine cooling system for vehicle and vehicle with same | |
| CN203809097U (en) | Intelligent thermal management system of diesel engine | |
| CN204729163U (en) | A kind of double spool electronic thermostat based on carrying hydrodynamic retarder vehicle | |
| CN218816630U (en) | Engine cooling device applying double electric control flow valve |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200114 |