Check patentability & draft patents in minutes with Patsnap Eureka AI!

A method for automatic transmission off-line detection

A technology of automatic transmission and detection method, which is applied in the direction of vehicle testing, machine/structural component testing, instruments, etc., which can solve the problems of ineffective diagnosis of faults and low efficiency of vehicle off-line detection, so as to improve efficiency and improve detection efficiency Effect

Active Publication Date: 2021-07-20
HUNAN INSTITUTE OF ENGINEERING
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problems to be solved by the present invention are: firstly, the detection efficiency of the existing vehicles off-line is low; secondly, some faults cannot be effectively diagnosed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for automatic transmission off-line detection
  • A method for automatic transmission off-line detection
  • A method for automatic transmission off-line detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] like figure 1 Shown, a kind of automatic transmission vehicle off-line detection method, comprises the following steps:

[0041] Step 1: After the vehicle is off the assembly line, in a stationary state, the gear is in the P gear, the key is powered on, the engine is not started, and the instrument shows the P gear, and the P gear is flashing, and the transmission fault light is flashing. Otherwise, check the meter, transmission controller power supply line, CAN bus, gear switch and shift cable.

[0042] The second step is to depress the accelerator pedal to the bottom, confirm that the P gear of the instrument is flashing, and the transmission fault light is always on. Otherwise, check the accelerator pedal assembly and wiring.

[0043] The third step is to loosen the accelerator pedal, step on the brake pedal, and confirm that the P ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of automobile production and discloses an automatic transmission off-line detection method. The present invention specifies the operation steps in the automatic transmission vehicle off-line detection process, and displays the gear position and fault light status corresponding to the current detection steps on the instrument, thereby realizing efficient and accurate automatic transmission complete vehicle off-line detection. On the one hand, it can accurately identify faults that cannot be identified by conventional diagnosis. On the other hand, it can quickly confirm faults without any diagnostic equipment in the normal state of the vehicle, thereby improving the efficiency of vehicle off-line detection. The invention has important engineering practical significance and broad application prospects.

Description

technical field [0001] The invention relates to the technical field of automobile production, in particular to an automatic transmission off-line detection method. Background technique [0002] The fault self-diagnosis function of the traditional automatic transmission control unit (TCU) can diagnose most signals from sensors, CAN communication signals and actuator feedback, but some signals cannot be accurately diagnosed, such as: [0003] Diagnosis of the maximum opening of the accelerator pedal: Because during the entire driving cycle, for some drivers, the accelerator pedal may not reach the maximum opening when the accelerator pedal is pressed to the bottom, which will affect the driver's dynamic performance. The conventional diagnosis method is to judge the presence or absence of the accelerator pedal opening signal, and the TCU cannot perform self-diagnosis on whether the signal can reach the maximum range. [0004] Failure diagnosis of a specific gear: Usually, due ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01M13/027
CPCG01M13/027G01M17/007
Inventor 王建德魏克湘黄中华唐谦朱云李泉王少力项顼
Owner HUNAN INSTITUTE OF ENGINEERING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com