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Torque reduction amount determination method and device, vehicle and storage medium

A determination method and torque reduction technology, which is applied to control devices, vehicle components, electric vehicles, etc., can solve the problems of unable to meet the needs of shift quality, consume manpower and material resources, and poor accuracy, so as to improve the efficiency and accuracy of determination, Realize the effect of automatic determination, saving manpower and material resources

Active Publication Date: 2021-04-23
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method is to pre-set calibration parameters in multiple dimensions, including speed regulation time, engine speed, engine torque, separation clutch speed and combined clutch speed, etc., and then determine a reasonable amount of torque reduction through a large number of actual vehicle tests and calibrations , not only consumes a lot of manpower and material resources, but also has low efficiency and poor accuracy, which cannot meet the user's needs for shift quality

Method used

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  • Torque reduction amount determination method and device, vehicle and storage medium
  • Torque reduction amount determination method and device, vehicle and storage medium
  • Torque reduction amount determination method and device, vehicle and storage medium

Examples

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Embodiment 1

[0029] figure 1 It is a flow chart of a method for determining the amount of torque reduction provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of determining the amount of torque reduction of the engine when the vehicle performs a power upshift. The method can be determined by the amount of torque reduction The device may be implemented by means of software and / or hardware, and may be integrated in a vehicle, which may be a vehicle with an automatic control function. refer to figure 1 , the method may include the following steps:

[0030] S110. Determine the torque reduction coefficient and the target engine speed corresponding to the current upshift process of the vehicle.

[0031] Wherein, the current upshift process is any process between the start of the vehicle upshift and the end of the upshift. It can be understood that when a vehicle with automatic control function calculates the parameters required for automatic cont...

Embodiment 2

[0039] figure 2 It is a flow chart of a method for determining torque reduction provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. Refer to figure 2 , the method may include the following steps:

[0040] S210. Determine the torque reduction coefficient and the target engine speed corresponding to the current upshift process of the vehicle.

[0041] Optionally, the torque reduction coefficient corresponding to the current upshift process can be determined as follows:

[0042] determining the opening degree of the accelerator pedal in the current upshift process of the vehicle;

[0043] Determine the torque reduction coefficient corresponding to the current upshift process according to the upshift information, the current upshift process and the opening degree of the accelerator pedal, the upshift information includes the corresponding gears before and after the upshift of the vehicle bit informat...

Embodiment 3

[0061] Figure 5 A structural diagram of a device for determining the torque reduction provided by Embodiment 3 of the present invention, the device can implement the method for determining the torque reduction described in the above embodiment, refer to Figure 5 , the device can include:

[0062] Coefficient and rotational speed determination module 31, is used for determining the torque reduction coefficient corresponding to the current upshift process of the vehicle and the target rotational speed of the engine, and the current upshift process is any process between the start of the vehicle's upshift and the end of the upshift;

[0063] The target torque reduction determination module 32 is used to determine the target torque reduction of the engine in the current upshift process according to the moment of inertia of the engine, the torque reduction coefficient and the target speed;

[0064] The target torque reduction sending module 33 is configured to send the target to...

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Abstract

The embodiment of the invention discloses a torque reduction amount determination method and device, a vehicle and a storage medium. The method comprises the steps of: detgermining the torque reduction coefficient corresponding to the current upshift process of the vehicle and the target rotating speed of an engine; determining a target torque reduction amount of the engine in the current upshift process according to the rotational inertia, the torque reduction coefficient and the target rotation speed of the engine; and sending the target torque reduction amount to an engine controller, so that the engine controller adjusts the rotating speed of the engine in the current upshift process according to the target torque reduction amount, and the difference value between the adjusted rotating speed of the engine and the target rotating speed meets the preset condition. According to the scheme, the target torque reduction amount of the engine in the current upshift process can be determined according to the torque reduction coefficient of the vehicle in the current upshift process, the target rotating speed of the engine and the rotational inertia of the engine, automatic determination of the torque reduction amount is achieved, a large number of real vehicle tests and calibration are not needed, and a large number of manpower and material resources are saved; and the determination efficiency and accuracy of the torque reduction amount are improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle control, and in particular, to a method and device for determining torque reduction, a vehicle and a storage medium. Background technique [0002] Shift quality is the core of automatic transmission control and is directly related to the comfort of the vehicle. With the upgrading of consumption, users have higher and higher requirements for shift quality. The shift quality of a power upshift is related to the amount of torque down on the engine. [0003] The traditional method is to pre-set calibration parameters in multiple dimensions, including speed regulation time, engine speed, engine torque, separation clutch speed and combined clutch speed, etc., and then determine a reasonable amount of torque reduction through a large number of actual vehicle tests and calibrations , not only consumes a lot of manpower and material resources, but also has low efficiency and poor acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/2054B60L2240/441B60L2240/443Y02T10/72
Inventor 李岩杨云波陈国栋王昊武斐张学锋许健男吴刚王小峰刘治文
Owner CHINA FIRST AUTOMOBILE
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