A method and device for determining the drag coefficient of an automobile
A technology of wind resistance coefficient and determination method, applied in the field of vehicle engineering, can solve the problems of complex calculation process, large wind resistance coefficient cycle, and large amount of data, so as to reduce calculation data, simplify calculation process and improve efficiency.
Active Publication Date: 2019-03-08
CH AUTO TECH CORP CO LTD
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the large amount of data of the vehicle model and the complex calculation process, the period for determining the drag coefficient is relatively long, which affects the efficiency of vehicle development
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0041] The invention will be described in detail below through specific embodiments.
[0042] Figure 1A It is a schematic flowchart of a method for determining the drag coefficient of an automobile provided by an embodiment of the present invention. The method is applied to a terminal device, and the method includes the following steps:
[0043] Step S101: In the determined car model, cut a car section along the length direction of the car, wherein the car se...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention provides a method and a device for determining an automobile drag coefficient. The method comprises the following steps: in a determined automobile model, intercepting an automobile section along the length direction of the automobile, wherein the automobile section is vertical to the axis direction of the automobile; according to the intercepted automobile section and the automobile model, determining the contour line of the automobile section; according to the contour line of the automobile section, determining a discrete type model corresponding to the automobile model; and according to the discrete type model and the set physical condition and boundary condition of the model, determining the automobile drag coefficient. When the embodiment of the invention is applied, one automobile section is intercepted along the length direction of the automobile, the contour line of the automobile section is determined according to the automobile section, and the discrete type model corresponding to the automobile model is determined according to the contour line of the automobile section so as to determine the automobile drag coefficient. The method greatly reduces computation data, simplifies computation processes and improves automobile development efficiency.
Description
technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a method and a device for determining the drag coefficient of an automobile. Background technique [0002] The drag coefficient of a car is an important coefficient for calculating the air resistance of a car. It can be used to calculate the air resistance of a car while driving. The smaller the drag coefficient, the less affected it is by air resistance; otherwise, the greater the impact of air resistance. The drag coefficient is directly proportional to the fuel consumption of the car, so reducing the air drag coefficient has important practical significance for reducing the fuel consumption of the car. [0003] The size of the drag coefficient depends on the shape of the car. Generally speaking, the drag coefficient of most cars we see on the road is between 0.28 and 0.4. There are some cars that reach around 0.15. [0004] At present, the method of verifying the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 陆群张海荣
Owner CH AUTO TECH CORP CO LTD