Method and system for controlling engine power
A technology of engine power and control method, which is applied in the direction of engine control, machine/engine, mechanical equipment, etc. It can solve the problems of unquantifiable differences, settings, and affecting shift comfort, and achieve the effect of improving comfort
Active Publication Date: 2019-10-08
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
[0003] However, the existing engine power control methods are not parameterized. To change the driving style, it usually needs to be completely redesigned, and the difference between different driving styles cannot be quantified. Moreover, different engine powers are not set according to different gears, so it is inevitable before and after shifting. Acceleration jump occurs, affecting shift comfort
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[0021] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0022] figure 1 It is a schematic flowchart of a method for controlling engine power according to an embodiment of the present invention. Such as figure 1 As shown, the engine power control method includes the following steps:
[0023] Step S11: Calculate the rotating mass conversion coefficients of different gears according to the moment of inertia of the powertrain and tires;
[0024] Specifically, in an embodiment of the present invention, the rotational mass conversion coefficient of each gear is Among them, m is the reference mass of the vehicle, r is the rolling radius of the tire, ∑I W is the sum of the moments of inertia of each whee...
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The invention provides an engine power control method. The method comprises the steps that rotating mass conversion coefficients of different gears are computed according to the rotational inertia of a power assembly and the rotational inertia of tires; the functional relationship between the opening degree of an accelerator pedal and the engine torque and the functional relationship between the opening degree of the accelerator pedal and the engine power are set; when the speed of a vehicle is lower than a first threshold value, the engine power is controlled according to the rotating mass conversion coefficients of different gears, the opening degree of the accelerator pedal, the relationship between the engine torque and the opening degree of the accelerator pedal and the speed of the vehicle; and when the speed of the vehicle is higher than a second threshold value, the engine power is controlled according to the rotating mass conversion coefficients of different gears, the opening degree of the accelerator pedal and the functional relationship between the opening degree of the accelerator pedal and the engine power. The invention further provides an engine power control system. According to the engine power control method and system, by adjusting parameters, the strong and weak of the driving styles are changed, the difference of different driving styles are quantized, and the gear shifting comfort is improved.
Description
technical field [0001] The invention relates to the technical field of vehicle control, in particular to an engine power control method and system. Background technique [0002] The engine power control method is the most important factor affecting the driving style of the vehicle. At present, automobile companies usually use the existing empirical data to control engine power and make adjustments according to actual driving conditions. [0003] However, the existing engine power control methods are not parameterized. To change the driving style, it usually needs to be completely redesigned, and the difference between different driving styles cannot be quantified. Moreover, different engine powers are not set according to different gears, so it is inevitable before and after shifting. Acceleration jump occurs, which affects the comfort of shifting gears. Contents of the invention [0004] In view of this, the present invention provides an engine power control method, whi...
Claims
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IPC IPC(8): F02D29/02
Inventor 范良明张希波
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD