Automatic transmission control device and control method

A technology of automatic transmission and control device, applied in the direction of transmission, transmission control, elements with teeth, etc., can solve the problems of reduced mountability or fuel consumption rate performance, increased transmission weight or size, etc., to prevent drivability reduced effect

Active Publication Date: 2015-11-18
JATCO LTD
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, since the weight and size of the transmission tend to increase, a new problem arises in that the mountability of the vehicle and the performance of the fuel consumption rate decrease.

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
  • Automatic transmission control device and control method
  • Automatic transmission control device and control method
  • Automatic transmission control device and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019] figure 1 It is an explanatory diagram showing the configuration of a vehicle equipped with the continuously variable transmission of the present embodiment.

[0020] The vehicle has an engine 1 as a power source. The output rotation of the engine 1 is transmitted to the drive wheels via a torque converter with a pin stop clutch 2, an automatic transmission (hereinafter, simply referred to as “transmission 4”), and a final reduction gear 6.

[0021] The vehicle is equipped with an oil pump 10 driven by a part of the power of the engine 1, an oil pressure control circuit 11 that regulates the oil pressure from the oil pump 10 and supplies it to various parts of the transmission 4, and a transmission controller 12 that controls the oil pressure control circuit 11. .

[0022] The transmission 4 includes a continuously variable transmission mechanism (hereinafter referred to...

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 control unit is provided with: an assessment means for assessing whether a specified elapsed time condition has been met after gear shifting to a specified gear position, which is achieved by engaging a specified frictional engaging element of a stepped gear-shifting mechanism; and a regulatory means for keeping the automatic transmission at a target gear ratio by prohibiting, until the assessment means determines that the specified elapsed time condition has been met, the stepped gear-shifting mechanism from re-shifting to the specified gear position and allowing only gear-shifting by the continuously variable gear-shifting mechanism.

Description

Technical field [0001] The present invention relates to a control device of an automatic transmission provided with a continuously variable transmission mechanism and a stepped transmission mechanism. Background technique [0002] A transmission having a continuously variable transmission mechanism (transmission mechanism) and a stepped auxiliary transmission mechanism that selectively switches to a plurality of forward transmission stages is known. In this type of transmission, compared with a continuously variable transmission composed of only a transmission mechanism, the transmission range can be enlarged by the auxiliary transmission mechanism, so the efficiency of the engine can be improved, and the fuel consumption rate can be improved. [0003] Among such transmissions, JP2012-57710A discloses a transmission equipped with a so-called manual transmission mode in which a gear ratio can be selectively controlled by a driver's shift operation. It also discloses a continuously ...

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): F16H61/16
CPCF16H61/16F16H37/022F16H61/08F16H61/66259F16H61/70F16H2061/6615F16H2061/163
Inventor 井上真美子田中宽康森真人
Owner JATCO LTD
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