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Grid control method of vehicle and vehicle

A control method and grille technology, applied in the field of vehicles, can solve problems such as not considering engine fuel economy, and achieve the effects of improving fuel economy, reducing drag coefficient, and improving engine performance

Active Publication Date: 2019-11-19
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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Problems solved by technology

[0004] That is to say, the grille control method in the prior art simply considers the intake air volume requirement for engine room cooling, and does not consider the fuel economy of the engine

Method used

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  • Grid control method of vehicle and vehicle
  • Grid control method of vehicle and vehicle
  • Grid control method of vehicle and vehicle

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Embodiment Construction

[0050] From the point of view of engine energy saving, the best fuel economy can be obtained only when different engine operating conditions correspond to different intercooler outlet temperatures. Specifically, under heavy engine load conditions, in order to prevent knocking, it is necessary to reduce the intercooler outlet temperature as low as possible. Under medium and small load conditions, the risk of engine knocking is low, and the temperature of the intercooler outlet air can be moderately increased, which can not only increase the temperature of the oil-air mixture in the combustion chamber at the end of piston compression, improve thermal efficiency, but also increase the engine intake manifold pressure, thereby reducing engine pressure. Pump air loss. Further, although engine knocking is a kind of abnormal combustion, which will cause engine vibration or mechanical damage in the combustion chamber, only by realizing the critical knocking combustion before engine kno...

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Abstract

The invention provides a grid control method of a vehicle and the vehicle, and belongs to the field of vehicles. The vehicle comprises an intercooler and a grid located in front of the intercooler. The grid control method comprises the following steps that the engine speed and the engine torque of the current vehicle are acquired; the target outlet temperature of the intercooler with the corresponding relation is found out from a pre-established relation table according to the acquired engine rotating speed and engine torque, wherein the corresponding relations between different engine rotating speeds and engine torque and the corresponding target air outlet temperatures are stored in the relation table in advance; and the opening degree of the grid is controlled according to the target air outlet temperature. The invention further provides the vehicle. A controller of the vehicle is used for executing the above steps. According to the grid control method and the vehicle, the combustion of an engine can be enhanced, the air loss of an air inlet pump can be reduced, and then the fuel economy of the engine can be further improved.

Description

technical field [0001] The present invention relates to the field of vehicles, in particular to a method for controlling a grille of a vehicle and a vehicle. Background technique [0002] Under the background of energy conservation and emission reduction, traditional gasoline vehicles are facing the dual pressure of tight oil resources and competition from new energy vehicles, forcing them to continuously introduce and apply various new technologies to improve fuel economy. The active air intake grille is a technical measure to reduce fuel consumption at the vehicle level. By reducing the grille inlet area, the wind resistance coefficient of the vehicle can be improved, thereby reducing the windward resistance and saving fuel. [0003] For the active grille with independent control of the upper and lower grilles, the usual arrangement is that the upper grille is followed by the condenser and radiator, and the lower grille is followed by the intercooler. The grille with this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K11/08
CPCB60K11/085Y02T10/88
Inventor 韩林沛柳达云杨光峰卢树强
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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