Vehicle hill starting control method and device
A technology of ramp start and control method, applied in the field of vehicle control, can solve the problems of insufficient vehicle power, flameout, low accuracy, etc., to achieve precise control, avoid rolling back and flameout, and improve accuracy.
Active Publication Date: 2021-03-19
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] However, this solution only uses the clutch oil pressure to determine the required torque of the engine corresponding to the clutch, and the accuracy is low, causing the vehicle to still have problems such as insufficient vehicle power, backsliding, and flameout during the ramp process.
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[0045] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.
[0046]In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists independently. A, B can be singular ...
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The embodiment of the invention provides a vehicle hill starting control method and device. The basic required torque of an engine in a vehicle is determined according to the opening position of a clutch in the vehicle during the control of the vehicle in a hill starting process; the compensation torque of the engine is increased, and the total required torque of the engine is jointly determined according to the basic required torque of the engine and the compensation torque of the engine; and the required torque of the engine and the required torque of the motor are determined according to the total required torque of the engine and the torque threshold value of the motor in the vehicle, so that the accuracy of the required torque of the engine and the required torque of the motor is improved, when the vehicle hill starting is controlled according to the high-accuracy required torque of the engine and the high-accuracy required torque of the motor, accurate control over the engine andthe motor in the vehicle hill starting process is achieved, and the problems of backward sliding and flameout in the vehicle hill starting process are avoided.
Description
technical field [0001] The present application relates to the field of vehicle control, in particular to a method and device for controlling a vehicle starting on a hill. Background technique [0002] As a common means of transportation, automobiles have brought a lot of convenience to people's lives, and have gradually become an indispensable part of people's daily life. When the vehicle starts on a slope road condition, there are often problems of inaccurate engine control, which leads to insufficient power, slipping and stalling of the vehicle. [0003] In the prior art, by obtaining the accelerator opening, engine speed, clutch shaft speed, and road gradient; and calculating the vehicle acceleration torque and vehicle resistance torque, the required torque of the engine is obtained, and the vehicle's ramp start is completed according to the required torque of the engine process. [0004] However, this solution only determines the required torque of the engine correspon...
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Login to View More IPC IPC(8): B60W10/06B60W10/08B60W30/18B60W40/00
CPCB60W10/06B60W10/08B60W30/18009B60W40/00
Inventor 左兰李永昌王菁李丕茂
Owner WEICHAI POWER CO LTD