Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control device for continuously variable transmission

A technology of continuously variable transmission and control device, applied in the direction of control device, transmission device, transmission device control, etc., can solve the problem that the torque cannot be fully ensured, and achieve the effect of ensuring the clamping force of the belt and preventing sliding

Inactive Publication Date: 2013-10-23
JATCO LTD
View PDF8 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At this time, in the state where coast stop control is performed so that the mechanical oil pump does not rotate and only the hydraulic pressure accumulated in the accumulator is supplied, there is a possibility that a torque higher than this value cannot be secured sufficiently for clamping the belt. The belt wheel pressure, there is a problem of belt sliding

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
  • Control device for continuously variable transmission
  • Control device for continuously variable transmission
  • Control device for continuously variable transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] figure 1 It is a schematic configuration diagram of a vehicle equipped with a continuously variable transmission according to an embodiment of the present invention. This vehicle includes an engine 1 as a power source. The output rotation of the engine 1 is transmitted to the driving wheels 7 via the torque converter 2 with a lock-up clutch, the first gear set 3 , the continuously variable transmission (hereinafter simply referred to as “transmission 4 ”), the second gear set 5 , and the final reduction gear 6 . transfer. The second gear set 5 is provided with a parking mechanism 8 that mechanically locks the output shaft of the transmission 4 so that it cannot rotate when the vehicle is parked.

[0044] In addition, the vehicle is provided with a mechanical oil pump 10 m driven by inputting rotation of the engine 1 with a part of the power of the engine 1 , and an electric oil pump 10 e driven by receiving power supply from the battery 13 . In addition, the transmis...

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 present invention is provided with a hydraulic control circuit including a hydraulic pump driven by a driving power source in order to supply an oil pressure to a hydraulic circuit, a hydraulic auxiliary unit for supplying an accumulated oil pressure to the hydraulic circuit, and a control valve for supplying at least one of oil pressures of the hydraulic pump and the hydraulic auxiliary unit to pulleys, and a control unit for executing a coast stop control to stop the driving power source while traveling and controlling, when an increase of torque inputted to the continuously variable transmission is detected or predicted during the coast stop control, the control valve so as to supply an oil pressure of the hydraulic auxiliary unit to the pulleys.

Description

technical field [0001] The present invention relates to a shift control device of a continuously variable transmission that prevents slippage of a belt. Background technique [0002] The oil pressure generated by the mechanical oil pump driven by the engine is supplied to the belt type continuously variable transmission. The primary pulley and secondary pulley are supplied with pulley pressure (primary pulley pressure and secondary pulley pressure) with this oil pressure as the primary pressure. The belt is clamped by these pulley pressures, and the groove width of each pulley is changed by controlling these pulley pressures to change the speed. [0003] In such a continuously variable transmission, when the engine is idling and stopped, the mechanical oil pump is not driven, and oil pressure is not supplied. In order to prevent this, it is known to provide an accumulator for accumulating hydraulic pressure, and to supply the hydraulic pressure of the accumulator at the ti...

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 Applications(China)
IPC IPC(8): F16H61/4008F16H61/4017F16H61/662F16H61/664
CPCB60W30/18072B60W10/06F16H9/16F16H61/66272B60W2030/1809B60W2510/1025F16H2061/0034F16H61/0031B60Y2300/18083F16H61/0025Y02T10/60F16H61/12F16H61/38F16H61/42F16H61/66
Inventor 青山训卓若山英史山田直弘立胁敬一和久公佑
Owner JATCO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com