Dual-clutch transmission gear selection method and system and computer equipment
A dual-clutch transmission, gear selection technology, applied in mechanical equipment, components with teeth, transmission control and other directions, can solve the problem of not introducing the detailed control method and process of DCT gear selection, and meet the needs of drivers. , reduce the effect of shift delay
Active Publication Date: 2022-07-12
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
[0003] The current gear decision-making method mainly focuses on the correction method of the target gear and the pre-selected gear, but it does not introduce the detailed control method and process of gear selection in the entire DCT operation process, especially when the pre-selected gear, demanded gear and When the current gear is on the same shaft, and when there is a transmission failure, how to decide the desired gear on the shaft
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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.
[0029] Usually, one shaft of a dual-clutch transmission is a controlled shaft, and the other shaft is an uncontrolled shaft, where the controlled shaft refers to the clutch shaft that currently transmits torque, and the uncontrolled shaft refers to the one that does not transmit torque. clutch shaft. The decision on the gear position during the shift process is actually to select a gear position that best meets the driver's expectations on the uncontrolled axis, and perform the shift switch.
[0030] see figure 1 , figure 1 A flow chart of an embodiment of the method for selecting a gear position of a dual-clutch transmission of the present invention is shown, which includes:
[0031]S101, according to the gear fault information, determine whether there is a...
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The invention discloses a gear selection method for a dual-clutch transmission. The gear selection method comprises the steps that whether a gear fault exists currently or not is judged according to gear fault information; when a gear fault exists, gear selection is carried out according to fault information; when the gear fault does not exist, whether a gear shifting demand exists currently or not is judged according to the required gear and the current gear; when the gear shifting requirement exists, gear selection is conducted according to the switching state and the relation between the required gear and the current gear; and when the gear shifting requirement does not exist, gear selection is conducted according to the relation between the pre-selected gear and the current gear. The invention further discloses a dual-clutch transmission gear selection system and computer equipment. According to the invention, the available gear can be selected based on the pre-selected gear, the required gear, the current gear and the fault information, and the flexibility is high.
Description
technical field [0001] The invention relates to the field of vehicle speed change, in particular to a gear selection method of a dual clutch transmission, a dual clutch transmission gear selection system and computer equipment. Background technique [0002] The current dual-clutch transmissions control the shift points of the transmission by calibrating the shift lines. In order to realize shifting at the calibrated shift point, the pre-selection is usually based on the acceleration and other related information to correct a vehicle speed offset, so as to realize the early removal of the gear and the clutch oil filling. Since the dual-clutch transmission has two input shafts, the required gear and pre-selected gear based on the shift line may be coaxial with the current gear, or may be different from the shaft. In addition, when there is a gear fault, it is necessary to select an available gear to ensure the whole The safe operation of the car, so how to select the target g...
Claims
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IPC IPC(8): F16H61/12F16H61/18F16H61/02
CPCF16H61/12F16H61/18F16H61/0204
Inventor 刘正伟熊杰相吉涛彭耀润邓云飞刘学武
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD