Air resistance coefficient and fuel economy calculation method under vehicle formation driving
A technology of air resistance coefficient and fuel economy, which is applied in the field of commercial vehicle design, can solve the problem of few heavy trucks, and achieve the effects of ensuring accuracy, saving manpower, and shortening the calculation cycle
Pending Publication Date: 2022-07-29
XUZHOU XUGONG AUTOMOBILE MFG CO LTD
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Problems solved by technology
At present, there are very few calculations and test data on the fuel economy of formation driving, and there are very few related to heavy trucks.
Method used
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[0062] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.
[0063] like figure 1 As shown, a method for calculating fuel economy under vehicle formation driving
[0064]A. Build a complete vehicle model of a certain heavy-duty tractor. The complete vehicle model is an existing complete vehicle model, which is obtained directly from the generator manufacturer. The complete vehicle model is simplified, and the pipeline lines, internal small parts, and frame are reduced. Heavy holes, etc. can be simplified as needed, and the simplified model is as follows figure 2 shown.
[0065] B. Use the commercial software starccm+ to perform CFD calculation on the above vehicle model, and calculate the air resistance coefficient as C dcal ; The test re...
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The invention discloses an air resistance coefficient and fuel economy calculation method under vehicle formation driving, which comprises the following steps: taking a pre-built whole vehicle model of a certain vehicle, obtaining a vehicle formation driving working condition, and carrying out CFD calculation according to the whole vehicle model and the vehicle formation driving working condition to obtain a single vehicle air resistance coefficient and a formation vehicle air resistance coefficient; obtaining the total weight of each formation vehicle, the orthographic projection area of each formation vehicle and the vehicle speed of the formation vehicles under the vehicle formation driving condition; and according to the single vehicle air resistance coefficient, the formation vehicle air resistance coefficient, the total weight of each formation vehicle, the orthographic projection area of each formation vehicle and the vehicle speed of each formation vehicle, calculating the fuel-saving amount of the vehicle team. The method has the advantages that the advantages of CFD three-dimensional simulation and formula calculation are fully combined, the method is simple and convenient, and the precision of calculation data is guaranteed; the method is short in calculation period, saves manpower and material cost, and is safe and reliable.
Description
technical field [0001] The invention relates to a method for calculating the air resistance coefficient and fuel economy under the formation of vehicles, belonging to the technical field of commercial vehicle design. Background technique [0002] With the serious consumption of energy and the continuous deterioration of the environment, the road transportation industry is facing severe tests. attention and attention of other departments. [0003] The emergence of formation driving technology provides a new way for commercial vehicles to save energy and reduce emissions. Formation driving technology refers to the realization of real-time communication and interaction among people, vehicles, and roads through a variety of vehicle networking technologies in a collaborative environment between vehicles and roads. Aerodynamic characteristics to achieve energy saving and emission reduction. [0004] The fuel economy brought by formation driving is closely related to variables s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G06F30/15G06F30/20G06F17/18G06F119/14
CPCG06F30/15G06F30/20G06F17/18G06F2119/14
Inventor 石岩陈太荣王敏许佩佩李瞳陈德博
Owner XUZHOU XUGONG AUTOMOBILE MFG CO LTD