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A method for flashing software of a gearbox control unit

A technology of transmission control and software, applied in the automotive field, can solve the problem that fault diagnosis and software flashing cannot be unified.

Active Publication Date: 2016-08-24
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to overcome the technical problem that fault diagnosis and software flashing cannot be unified in the prior art, and to provide a software flashing method that can be implemented on a fault diagnosis instrument

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  • A method for flashing software of a gearbox control unit
  • A method for flashing software of a gearbox control unit

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Embodiment Construction

[0038] 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.

[0039] Firstly, explain the three working modes of the transmission control unit (TCU). The TCU includes three diagnostic modes, namely default mode, extended mode and flash mode. Since the functions defined by the three modes are different, the diagnostics they can support The services are different: the default mode is used for commonly used reading and clearing faults, and the services it can support include mode control, controller reset, clearing diagnostic information, reading fault codes, and maintaining connection with the fault d...

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Abstract

The invention discloses a software flashing method of a gearbox TCU. The method includes the steps that after it is detected that the TCU enters in an expansion mode unlocking state, a fault diagnosis code submission closing function instruction is sent to the TCU; after the fault diagnosis code submission closing function is achieved by the TCU, a flashing mode entering instruction is sent to the TCU, so that the TCU enters in a flashing mode locking state; after the TCU enters in the flashing mode locking state, flashing safety verification is conducted on the TCU, and accordingly the TCU enters in a flashing mode unlocking state after flashing safety verification; after the TCU enters in the flashing mode unlocking state, TCU software is flashed. According to the software flashing method of the gearbox TCU, the software flashing method and a fault diagnosis method can coexist in a fault diagnosis tester, the method can be implemented based on a communication protocol of the fault diagnosis tester and the TCU, and therefore an operator can carry one fault diagnosis tester so that the fault diagnosis operation and software flashing operation of the TCU can be achieved. The software flash method of the gearbox TCU has the advantages of being simple and easy to operate and capable of lowering flashing cost.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a software flashing method for a gearbox control unit. Background technique [0002] The transmission control unit (TCU) is specially used in vehicles equipped with automatic transmissions. By collecting signals from various sensors of the automatic transmission and judging the driver's operating intentions, the internal software calculates and drives the solenoid valve of the transmission to realize the automatic up / down of the vehicle. , Downshifting, etc. Therefore, the internal software of the TCU determines the comfort of the automatic transmission, so the reliable flashing of the TCU software data plays an important role in the normal operation of the automatic transmission and the vehicle. [0003] The current situation is to use special software flashing equipment to flash the software of the gearbox control unit, but because software flashing usually requires fault d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02G06F9/445
Inventor 刘旅行徐瑞雪汪敏朱丹丹
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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