A Fuel-Saving Shift Algorithm and a Prompt System with the Algorithm
A fuel-saving and algorithmic technology, applied to components with teeth, belts/chains/gears, mechanical equipment, etc., can solve problems such as difficult to guarantee the accuracy of gear shifting, and achieve the effect of fuel economy
Active Publication Date: 2015-07-29
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] In view of this, the present invention provides a fuel-saving shift algorithm and a prompt system with the algorithm, to solve the problem that the accuracy of shifting is difficult to ensure in existing manual transmission vehicles, and to realize the fuel economy of manual transmission vehicles.
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[0046] The inventor found through research that the engine speed of the vehicle is an important factor affecting the fuel economy of the vehicle, and each vehicle has a corresponding target engine speed. When the engine speed of the vehicle reaches or approximately reaches the target engine speed, the fuel consumption of the vehicle is the smallest. , the highest fuel economy. Therefore, according to the working condition information of the vehicle, the engine speed of the vehicle can be kept near the target engine speed through timely shifting, which can reduce the fuel consumption of the vehicle and improve the fuel economy of the vehicle. Based on the above findings, the inventors have summarized the target engine speed of different models and the corresponding shift thresholds of the engine speed. The following table shows the target engine speed of the HOWO-A7 model and its shift thresholds. It should be noted that, what is shown in the following table is only to facilita...
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The embodiment of the invention provides a fuel-saving gear shifting algorithm, which is suitable for automobiles with manual speed changing boxes. The fuel-saving gear shifting algorithm comprises the following steps of: acquiring the speed of an automobile and the opening of an accelerator; obtaining a preset gear ascending speed threshold value and a preset gear descending speed threshold value according to the opening of the accelerator, comparing the acquired speed of the automobile with the preset gear ascending speed threshold value and the preset gear descending speed threshold value, and determining the current gear shifting condition of the automobile according to a comparison result; and comparing the acquired speed of the automobile and the opening of the accelerator and preset gear shifting law data to obtain gear shifting gears, wherein the gear shifting gears correspond to the rotate speed of a target engine of the automobile, and the speed of the automobile and the rotate speed of an engine can be switched mutually. According to the fuel-saving gear shifting algorithm, the optimum gear shifting gears are obtained by the acquired opening of the accelerator and the speed of the automobile to promote drivers to shift the gears, so that the rotate speed of the engine of the automobile is kept around the rotate speed of the target engine to realize the fuel economy of the automobiles with the manual speed changing boxes.
Description
technical field [0001] The invention relates to the field of automobile driving, and more particularly, to a fuel-saving gear shifting algorithm and a prompting system having the algorithm. Background technique [0002] At present, the transmissions of automobiles are mainly divided into automatic transmissions and manual transmissions. The automatic transmission can automatically shift gears according to the working condition information of the vehicle, such as the change of the accelerator opening and the speed of the vehicle; therefore, the car equipped with the automatic transmission can automatically shift the gears in a timely manner during the driving process of the car, thereby To achieve the purpose of saving fuel and ensure the fuel economy of the car. Manual transmission, also known as manual transmission, that is, it requires the driver to manually shift the gear lever to change the meshing position of its internal gear and change the transmission ratio to achie...
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IPC IPC(8): F16H59/44F16H59/24F16H59/54
Inventor 寇祥荣陈小磊金磊
Owner WEICHAI POWER CO LTD