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tcu and its detection and treatment methods for automatic transmission faults

A technology of automatic transmission and detection method, applied in the direction of components with teeth, transmission control, belt/chain/gear, etc., can solve the problems of vehicle safety risks, TCU cannot be recognized, automatic transmission cannot be maintained normally, etc. The effect of avoiding driving risks and improving driving safety

Active Publication Date: 2018-05-11
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some cases, the automatic transmission cannot normally maintain the changed gear, and there is a fault, but the TCU cannot recognize it, which may cause the vehicle to be a safety risk

Method used

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  • tcu and its detection and treatment methods for automatic transmission faults
  • tcu and its detection and treatment methods for automatic transmission faults
  • tcu and its detection and treatment methods for automatic transmission faults

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Embodiment Construction

[0079] There are two power sources in a hybrid electric vehicle, the engine and the motor. The hybrid control unit (Hybrid Control Unit, HCU) is the core of the entire vehicle control, and is mainly responsible for coordinating the engine management system (Engine Management System, EMS) and the motor controller (Microcontroller Unit, MCU) work, and is responsible for the high and low voltage power management and fault detection of the entire power system. Hybrid vehicles equipped with dual-clutch automatic transmissions and traditional fuel-powered vehicles can take advantage of the uninterrupted power of dual-clutch automatic transmissions during gear shifting.

[0080] Currently, an automatic transmission control unit (Transmission Control Unit, TCU) sends a gear-engagement control signal to control the automatic transmission to shift gears and determine that the automatic transmission completes the gear shifting action. However, in some cases, the automatic transmission ca...

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Abstract

The invention discloses a TCU and a method for detecting and processing faults of an automatic transmission through the TCU. The method comprises the following steps of: detecting whether the automatic transmission has off-gear faults or not while determining that the automatic transmission completes gear shifting; and while determining that the automatic transmission has off-gear faults, diagnosing the off-gear fault type of the automatic transmission. With the adoption of the technical scheme, the off-gear faults can be detected, so that traveling safety is strengthened.

Description

technical field [0001] The invention relates to the field of automatic transmission fault processing, in particular to a TCU and a method for detecting and processing automatic transmission faults. Background technique [0002] The power transmission of the dual-clutch automatic transmission is to connect two input shafts through two clutches, and each shaft has odd and even gears, which can realize the conversion of the transmission ratio without cutting off the power, thereby shortening the shifting time and effectively Improve shift quality. [0003] Currently, an automatic transmission control unit (Transmission Control Unit, TCU) sends a gear-engagement control signal to control the automatic transmission to shift gears and determine that the automatic transmission completes the gear shifting action. [0004] However, in some cases, the automatic transmission cannot normally maintain the changed gear, and there is a fault, but the TCU cannot recognize it, which may cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/12
CPCF16H61/12F16H2061/1216F16H2061/1232
Inventor 张喀曾艾虞璐伊焦伟严忆泉蒋昌恺
Owner SAIC MOTOR
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