Automatic transmission torque pre-control and shift coordination control method, device and vehicle

A technology of automatic transmission and coordinated control, which is applied in the direction of transmission control, geared components, clutches, etc., can solve the problems of shifting shock and poor stability, so as to avoid shifting shock, stabilize engine torque, reduce shifting The effect of blocking time

Active Publication Date: 2021-09-17
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of shifting impact and poor stability caused by torque fluctuations in the existing torque pre-control control method on a hybrid vehicle equipped with a dual-clutch gearbox, the present invention provides an automatic gearbox torque pre-control and Shift coordination control method, device and automobile

Method used

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  • Automatic transmission torque pre-control and shift coordination control method, device and vehicle
  • Automatic transmission torque pre-control and shift coordination control method, device and vehicle
  • Automatic transmission torque pre-control and shift coordination control method, device and vehicle

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Embodiment 1

[0055] see figure 1 as well as figure 2 , the present embodiment provides a torque pre-control and gear shift coordinated control method for an automatic transmission, and the method is used for coordinated control of a hybrid dual-clutch automatic transmission. In this embodiment, the coordinated control method is applied to a hybrid vehicle equipped with a dual-clutch automatic transmission, so as to realize torque pre-control and coordinated control of shifting. Of course, in other embodiments, the coordinated control method can also be applied to a hybrid electric vehicle equipped with an automatic transmission using a clutch to transmit power (a hybrid electric vehicle equipped with a manual mechanical automatic transmission), so as to realize torque pre-control Coordinated control with shifting. Wherein, the coordinated control method includes the following steps, that is, the first step to the eleventh step. It should be noted here that, in other embodiments, these ...

Embodiment 2

[0073] This embodiment provides an automatic transmission torque pre-control and shift coordinated control method, which is similar to the coordinated control method in Embodiment 1, the difference is that this embodiment provides a correction method for the actual engine torque, and the correction process is the same as Example 1 is different. Wherein, the method for correcting the actual engine torque includes the following steps.

[0074] (1) Calculate the clutch torque change gradient. In this embodiment, the clutch torque gradient is the difference between the clutch torque and the torque corresponding to the previous sampling point (1 / Z), where 1 / Z represents the previous sampling point (before 10 ms) in the automotive field.

[0075] (2) Calculating the look-up coefficient is based on the speed difference between the target speed and the actual speed of the engine. In this embodiment, the rotational speed difference is the difference between the target rotational spee...

Embodiment 3

[0082] This embodiment provides an automatic transmission torque pre-control and gear shift coordinated control device, which applies the automatic transmission torque pre-control and gear shift coordinated control method in Embodiment 1 or 2. The coordinated control device includes a torque pre-control control module, a torque drop module, a torque hold module, a judgment module 1, a torque rise and torque control activation module, a torque speed acquisition module, a correction module, a judgment module 2, a judgment module 3, and a gear shift prohibition Cancellation module and shift control module.

[0083] The torque pre-control control module is used for when the torque pre-control and shift control are triggered at the same time, the hybrid vehicle controller sends a prohibition shift command, and the automatic transmission control unit enters the torque pre-control control. Torque drop module When the gearbox is under torque pre-control, it will combine the clutch for...

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Abstract

The invention discloses an automatic gearbox torque pre-control and shift coordination control method, device and automobile. This method optimizes the control logic. If the torque pre-control and shift control are not triggered at the same time, the gearbox will perform normal torque pre-control; The engine torque intervention is carried out during the process, and when the engine torque is stable, the torque pre-control control is exited and the subsequent shift control is entered. The present invention has already completed the clutch oil filling in the torque pre-control, increases the intervention of the engine torque, ensures that both the clutch torque and the engine torque remain stable during the torque pre-control, and proposes a new method when simultaneously triggering shifting and torque pre-control The new strategy, in the process of torque pre-control, the clutch that is about to be combined is controlled by oil filling, which reduces the subsequent shift time, and also avoids the shift shock caused by torque fluctuations when the torque pre-control directly enters the shift control.

Description

technical field [0001] The present invention relates to a coordinated control method in the technical field of automobile control, in particular to an automatic transmission torque pre-control and gear shift coordinated control method, and also relates to an automatic transmission torque pre-control and gear shift coordinated control device, and also relates to A hybrid car. Background technique [0002] A hybrid vehicle (referred to as a hybrid vehicle) refers to a vehicle equipped with two or more power sources. Currently, hybrid vehicles mainly refer to gasoline-electric hybrid vehicles. The power source is mainly an engine, but those with a motor as the engine Auxiliary power drives the car, and the two combine to save energy. [0003] Hybrid vehicles equipped with wet dual-clutch automatic transmissions are widely promoted because of their fast and smooth shifting, strong power, and high transmission efficiency. In the prior art, when the battery capacity of the vehic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/02F16H61/06F16H61/16F16D48/06
CPCF16D48/066F16D2500/1026F16D2500/10412F16D2500/1066F16D2500/3065F16D2500/308F16D2500/5122F16D2500/70252F16D2500/70657F16D2500/70663F16H61/0213F16H61/061F16H61/16F16H2061/062
Inventor 景甜甜张海玲景宏亮洪洁
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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