Dual-state logic transmission and gear shifting process control method thereof

A process control and transmission technology, applied in vehicle transmission, transmission control, gear transmission, etc., can solve the problems of high shift impact and low power density.

Active Publication Date: 2020-10-23
JILIN UNIV
View PDF15 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems of low power density and large shifting impact of traditional planetary transmissions. According to the characteristics of high transmission efficiency of double internal meshing planetary transmissions, a two-state logic transmission is designed, and the Shift process control method of dual-state logic transmission

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
  • Dual-state logic transmission and gear shifting process control method thereof
  • Dual-state logic transmission and gear shifting process control method thereof
  • Dual-state logic transmission and gear shifting process control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] refer to figure 1 , in order to solve the problems in the prior art, the present invention provides a dual-state logic transmission and a shift process control method thereof, wherein the dual-state logic transmission includes a planetary row X1, a planetary row X2, a planetary row X3 and a planetary row X4, Planetary row X1, planetary row X2, planetary row X3 are forward gear planetary row, planetary row X4 is reverse gear planetary row, planetary row X1 includes sun gear S1, planetary gear P1, ring gear R1, planetary carrier CA1, clutch C1 and Clutch C2, planetary row X2 includes sun gear S2, planetary gear P2, ring gear R2, planetary carrier CA2, clutch C3 and clutch C4, planetary row X3 includes sun gear S3, planetary gear 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 discloses a dual-state logic transmission and a gear shifting process control method thereof. The dual-state logic transmission is characterized by comprising four forward gear planet rows and a reverse gear planet row, each planet row comprises two clutches, when a single gear shifting oil pressure is actuated, one clutch is disengaged, the other clutch is engaged to form a dual-state logic structure, the power density of the transmission can be improved, and the transmission hydraulic system structure is simplified. The gear shifting process of the double-state logic transmission is divided into gear shifting under single-oil-pressure actuation and gear shifting under combined-oil-pressure actuation, the relation between the torque capacity and the oil pressure of the clutch is analyzed, the gear shifting time is used as a constraint condition, the gear shifting impact degree and the sliding friction work serve as evaluation indexes, a boosting curve under single-oil-pressure actuation and a depressurization curve under single-oil-pressure actuation are optimized, and oil pressure curve group under a combined oil pressure actuation is determined through the combination of the boosting curve and the depressurization curve, so that the gear shifting impact degree can be obviously reduced, the clutch sliding friction work is reduced, and the whole vehicle gear shifting quality is improved.

Description

technical field [0001] The invention belongs to the technical field of transmission control, and more precisely, the invention relates to a dual-state logic transmission and a shift process control method thereof. Background technique [0002] With the increasingly stringent laws and regulations on energy saving and emission reduction of automobiles and the continuous improvement of electronic automatic control technology, the loading rate of automatic transmissions for vehicles has continued to increase in recent years. Automatic transmission control can increase or decrease gears reasonably, and automatically adjust the best The working range of the engine can meet the driving requirements of working conditions, which can significantly reduce the driver's work intensity, improve driving comfort and improve fuel economy. Among them, the hydraulic automatic transmission with planetary gear transmission is the most widely used in passenger cars due to its advantages of smooth...

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
IPC IPC(8): F16H3/62F16H61/02F16H61/06
CPCF16H3/62F16H61/0265F16H61/065F16H2200/006F16H2200/0082F16H2200/2012F16H2200/2051
Inventor 宋大凤梁伟智杜劭峰曾小华马涛杨丽丽陈建新段朝胜
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap