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Water temperature control method, device, thermal management system and storage medium

A control method and water temperature technology, which are applied in the control of coolant flow, engine cooling, and engine components, etc., can solve the problems of inability to control the speed of water pumps and fans, inability to achieve precise water temperature regulation, and poor regulation effects, and achieve improved performance. Longevity, reduced wear and tear, flexible control effects

Active Publication Date: 2021-01-19
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional diesel engine temperature control mainly relies on the wax-type thermostat to adjust the large and small cycles. It can only control the opening of the thermostat, but cannot control the speed of the water pump and fan. There are few controllable parameters, the adjustment effect is not good, and it cannot achieve accurate Water temperature control

Method used

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  • Water temperature control method, device, thermal management system and storage medium
  • Water temperature control method, device, thermal management system and storage medium
  • Water temperature control method, device, thermal management system and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0024] figure 1 It is a flow chart of a water temperature control method provided by Embodiment 1 of the present invention. This embodiment is applicable to the water temperature control of a diesel engine of a vehicle, and the method can be executed by a water temperature control device or a vehicle thermal management system ,Such as figure 1 As shown, the method includes:

[0025] Step 110, monitoring the water temperature of the diesel engine, and judging whether the water temperature is higher than a set temperature threshold.

[0026] Wherein, the diesel engine or diesel engine may be a diesel engine of an embedded system. The water temperature can be the temperature of the water at the outlet of the diesel engine. The set temperature threshold can be determined according to the performance of the diesel engine, or determined according to experience. When the water temperature is lower than the set temperature threshold, the diesel engine is in the heat engine mode, t...

Embodiment 2

[0048] figure 2It is a flowchart of a water temperature control method in Embodiment 2 of the present invention. This embodiment is further refined and supplemented on the basis of the previous embodiment. The water temperature control method provided in the embodiment of the present invention also includes: The state space equations are linearized and discretized.

[0049] Such as figure 2 As shown, the clock synchronization method of the vehicle provided in this embodiment includes:

[0050] Step 210, determine the set temperature threshold and target temperature of the diesel engine.

[0051] Step 220, monitor the water temperature of the diesel engine.

[0052] Step 230, establishing a state space equation of the water temperature of the diesel engine.

[0053] Wherein, the state variables of the state space equation include engine outlet temperature, engine inlet temperature, body metal temperature, and large circulation flow of the diesel engine, and the input vari...

Embodiment 3

[0093] image 3 It is a structural schematic diagram of a water temperature control device in Embodiment 3 of the present invention, as image 3 As shown, the water temperature control device includes: a water temperature monitoring module 310 , a preprocessing module 320 , a control variable determination module 330 and a water temperature control module 340 .

[0094] Among them, the water temperature monitoring module 310 is used to monitor the water temperature of the diesel engine and judge whether the water temperature is higher than the set temperature threshold; the preprocessing module 320 is used to obtain the target temperature if the water temperature is higher than the set temperature threshold And the pre-established state space equation of the water temperature of the diesel engine; the control variable determination module 330 is used to determine the control variable of the water temperature according to the target temperature and the state space equation, whe...

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Abstract

The invention discloses a water temperature control method and device, a whole vehicle heat management system and a storage medium. The water temperature control method comprises the steps that the water temperature of a diesel engine is monitored, and whether the water temperature is higher than a set temperature threshold value or not is judged; if yes, a target temperature and a pre-establishedstate space equation of the water temperature of the diesel engine are obtained; according to the target temperature and the state space equation, control variables of the water temperature are determined, wherein the control variables comprise the fan rotating speed, the electric control water pump rotating speed and the thermostat opening degree; and the water temperature of the diesel engine is controlled according to the control variables. According to the technical scheme, the water temperature is monitored in real time, the state space equation of the water temperature is established, the corresponding relation between the water temperature and the control variables is determined, the values of the control variables reaching the target temperature are determined according to the corresponding relation, the values of the control variables are optimized online, the water temperature control precision is improved, and the energy consumption of the system is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of temperature control, and in particular to a water temperature control method, device, thermal management system, and storage medium. Background technique [0002] As the running time of the automobile diesel engine increases, its own temperature will also increase. When the temperature exceeds the working range, it will lead to an increase in engine power consumption and reduce the life of related components. Therefore, temperature control is crucial for diesel engines. [0003] The traditional diesel engine temperature control mainly relies on the wax-type thermostat to adjust the large and small cycles. It can only control the opening of the thermostat, but cannot control the speed of the water pump and fan. There are few controllable parameters, the adjustment effect is not good, and it cannot achieve accurate Water temperature regulation. Contents of the invention [0004] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P11/16F01P7/16F01P7/04
CPCF01P7/04F01P7/16F01P7/164F01P11/16F01P2007/143
Inventor 周鹏张建锐杨荣彬佀庆涛李子竞
Owner FAW JIEFANG AUTOMOTIVE CO
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