Front mugguard and motor vehicle

Abstract

The invention relates to a front mugguard and a motor vehicle. The front mudguard comprises an arc-groove-shaped top plate main body. The top main plate main body comprises a guiding part which is used for being arranged in the range of an included angle between the center line of a front fork and a vertical line perpendicular to the ground through the center of a front wheel. The guiding part in the longitudinal section is in an arc shape with the continuous curvature radius, and at least one tangent line passing through the outer surface of the guiding part in the longitudinal section can penetrate to an air inlet of a cooling air duct of an engine cylinder head. In this way, the flow speed of the near wall face of the cooling air duct can be increased, convective heat exchange of the outer surface of the top of an engine combustion chamber is enhanced, the heat load of an engine is reduced, and the engine stably works within the proper temperature range. In addition, the front mudguard guides windward airflow into the cooling air duct of the engine, and other air can directly flush cooling fins at the side portion of the engine. The front mudguard not only can improves the flow speed of the cooling air duct in the engine, but also can cool the side part of the engine and reduce the thermal load of the engine.

Description

technical field [0001] The invention relates to the technical field of engine cooling, in particular to a front fender and a motor vehicle. Background technique [0002] When the motor vehicle is running, the heat sink of the engine cools the engine by capturing the windward airflow for convective heat exchange. Make sure the engine is working at a reasonable temperature. If the thermal load of the engine is high, this will lead to a decrease in the mechanical properties of the engine components and excessive thermal deformation, which will lead to unstable operation of the engine. Moreover, it will also lead to a decrease in the lubricating performance of the engine. These will increase the friction loss of the engine, and ultimately increase the fuel consumption and emissions of the motor vehicle. [0003] In order to reduce the fuel consumption and emissions of motor vehicles, the engine tends to be small and lightweight. However, the small design requires that the hea...

AI Technical Summary

Problems solved by technology

If the thermal load of the engine is high, this will lead to a decrease in the mechanical properties of the engine components and excessive thermal deformation, which will lead to unstable engine operation

Moreover, it will also lead to a decrease in the lubricating performance of the engine.

These will increase the friction loss of the engine, and ultimately increase the fuel consumption and emissions of the motor vehicle

[0003] In order to reduce the fuel consumption and emissions of motor vehicles, the engine tends to be small and lightweight. However, the miniaturization design requires that the heat sink should not be too large and the engine must be strong, which will increase the risk of high engine heat load.

In addition, lean combustion can also be used to reduce fuel consumption and emissions, but one of the constraints restricting lean combustion is the high heat load of the engine

Therefore, the high heat load caused by the above method will increase fuel consumption and emissions, and cannot fundamentally solve the problem of engine fuel consumption and emissions

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