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Normal starting control method of dual-clutch automatic transmission

An automatic transmission, dual clutch technology, applied in the direction of transmission control, elements with teeth, belts/chains/gears, etc. question

Active Publication Date: 2016-05-11
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the prior art, there is only a control method for the normal start of a transmission equipped with a single clutch or a torque converter, but there is no special control method for a normal start of a wet dual-clutch automatic transmission, which may lead to During the process, the whole vehicle started unevenly, which reduced the safety of the whole vehicle and the comfort of driving.

Method used

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  • Normal starting control method of dual-clutch automatic transmission
  • Normal starting control method of dual-clutch automatic transmission
  • Normal starting control method of dual-clutch automatic transmission

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Embodiment Construction

[0095] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0096] Such as figure 1 Shown is a flowchart of a normal start control method for a dual-clutch automatic transmission in an embodiment of the present invention. The normal start control method for a dual-clutch automatic transmission includes the following steps:

[0097] Step 101: Obtain the position of the ignition switch of the engine, the position of the shift lever, the opening of the accelerator pedal, the gear position of the gearbox, the engine speed, the speed of the first clutch and the speed of the second clutch every set sam...

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Abstract

The invention discloses an automatic transmission normal start control method of double clutches. The method includes the steps that the opening degree of an accelerator pedal, the rotation speed of an engine, the gear of a gearbox and other parameters are acquired in every set sampling period; whether an ignition switch of the engine is located in the ON gear or not, whether a gear shift lever is switched to the D / R gear from the P gear or not and whether the opening degree of the accelerator pedal is larger than a set opening degree threshold of the accelerator pedal or not are judged; if yes, when the gear shift lever is switched to the D gear from the P gear, normal start control is performed on the first clutch according to the acquired parameters; when the gear shift lever is switched to the R gear from the P gear, normal start control is performed on the second clutch according to the acquired parameters. Through the method, the two clutches are not switched in the normal start process, and thus the method is favorable for safety and comfort of a whole vehicle.

Description

technical field [0001] The invention relates to the technical field of automobile transmissions, in particular to a normal start control method of a double-clutch automatic transmission. Background technique [0002] A typical wet dual-clutch automatic transmission has two internal and external clutches. The external clutch is connected to the external input shaft and controls the odd gears. The external clutch is also called the first clutch. The internal clutch is connected to the internal input shaft and controls the even gears and gears. The reverse gear (that is, the R gear), the inner clutch is also called the second clutch. Electro-hydraulic control is used to drive the solenoid valve to realize the gear change and the alternate work of the clutch, and finally realize the automatic shifting. [0003] At present, in the prior art, there is only a control method for the normal start of a transmission equipped with a single clutch or a torque converter, but there is no ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00
CPCB60W10/02B60W10/06F16H61/0021F16H61/02
Inventor 严刚胡亮
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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