Optimization design method of cooling system of engine

An engine cooling and cooling system technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of unrealizable modification, limited layout space, passive optimization of work, etc., to improve development efficiency, low cost, and complete data. Effect

Active Publication Date: 2013-06-05
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

Engine cooling system bench and vehicle tests can only be carried out after the prototype is completed. At this time, if improper layout or unr

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  • Optimization design method of cooling system of engine
  • Optimization design method of cooling system of engine
  • Optimization design method of cooling system of engine

Examples

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Embodiment 1

[0032]In one embodiment, one of the expected design goals of the engine cooling system is the rated operating point of the water pump, that is, when the engine speed is 6000rpm, the water pump flow rate of 119 l / min and the pressure rise of 120KPa should be satisfied, while another design goal is the engine speed of 2000rpm ( idling condition), the flow rate of the heater core must meet 8.9 l / min. Bring the relevant data parameters of each component of the above engine cooling system into the above simulation model for simulation calculation, and combine the various working conditions (speed, etc.) to obtain the calculation results of the flow, temperature and pressure distribution of each component as shown in the table below:

[0033]

[0034] It can be seen that when the engine speed is 6000rpm, the flow rate of the water pump meets the requirements, but the calculated pressure rise of the water pump is 156.8KPa, which is higher than the target requirement of 120KPa, indi...

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Abstract

The invention provides an optimization design method of a cooling system of an engine. The optimization design method of the cooling system of the engine utilizes a one-dimensional fluid simulation technology to perform flow analysis and comprises the following steps of (1) collecting related data of components of the cooling system and performing parameterization processing; (2) establishing a one-dimensional module; (3) performing analog computation under different working conditions; and (4) analyzing a calculation result and performing a conventional optimization design on the cooling system according to the calculation result. Pressure distribution, flow distribution, flow resistance of every component and temperature variation of cooling liquid under warming-up working conditions of the cooling system are simulated at the beginning of the design to obtain optimum matching parameters of the cooling system of the engine, so that the optimization design method of the cooling system of the engine has the advantages of being capable of well guiding the design and development of the cooling system; accordingly improving the development efficiency; and saving the test costs.

Description

technical field [0001] The invention relates to the technical field of automobile engine development, in particular to an engine cooling system optimization design method based on computer simulation calculation. Background technique [0002] The role of the engine cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature state, and when the external temperature is low, the heat absorbed by the coolant is used for heating the passenger compartment. Engine cooling system bench and vehicle tests can only be carried out after the prototype is completed. At this time, if improper layout or unreasonable matching is found, due to the limited layout space, many modifications cannot be realized, and the optimization work is very passive. Therefore, it is very important to predict and optimize the performance of the engine cooling system before the prototype trial production. Contents of th...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 陶丽芳徐亚飞刘小生
Owner CHERY AUTOMOBILE CO LTD
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