Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydraulic system for torque converter

A torque converter and converter technology, applied in the field of torque converters, can solve problems such as efficiency loss

Active Publication Date: 2017-06-16
CATERPILLAR INC
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many cases it is desirable to have the impeller and turbine rotate at the same speed, and slippage between this part creates a loss of efficiency

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
  • Hydraulic system for torque converter
  • Hydraulic system for torque converter
  • Hydraulic system for torque converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention relates to torque converters and related devices for transmitting rotational force in a transmission system, and in particular to a hydraulic system or circuit for operating a torque converter. refer to figure 1 , shows an embodiment of a machine in which the disclosed torque converter may be included as part of a transmission system that transmits rotational force from a prime mover to a load or driven element of the machine. Although in figure 1 The arrangement is specifically described in connection with a wheel loader 100, but the arrangements disclosed herein have general applicability in various other types of machines as well. The term "machine" may refer to any mobile or stationary machine that performs some type of operation associated with an industry such as mining, construction, agriculture, transportation, or any other industry known in the art . For example, the machine may be a mobile machine such as an earth moving machine (e.g.,...

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

A hydraulic circuit supplies pressurized hydraulic fluid to and from a torque converter that is operatively associated with a lockup clutch. The torque converter is disposed upstream of an outlet regulator that maintains a predetermined pressure in the torque converter. Power transmission in a powertrain can be directed through the torque converter during a hydrodynamic mode and can be directed through the lockup clutch during lockup mode. To switch between the hydrodynamic mode and the lockup mode, the hydraulic circuit includes a diverter valve to selectively direct pressurized hydraulic fluid between the torque converter and the lockup clutch. When operating in the lockup mode, the diverter valve further diverts hydraulic fluid discharged for the torque converter to bypass the outlet regulator disposed downstream of the torque converter.

Description

technical field [0001] The present invention relates generally to a torque converter for use as part of a machine transmission, and more particularly to a hydraulic circuit and method for actuating a torque converter. Background technique [0002] A transmission system is an assembly that operably couples an internal combustion engine, or similar prime mover, to a driven element (referred to as a load) powered by the engine. Drivelines are an integral component of many mobile and stationary machines including, for example, earth moving machines, generator sets, and any other suitable type of machine powered by an engine. A transmission system includes various components and devices to transmit the rotational motion of the engine output and to adjust the speed, power and / or direction associated with that motion. For example, to account for differences in operating speed and power that may exist between a running engine or prime mover and a driven element, a transmission syst...

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): F16H41/04F16H41/24
CPCF16H41/04F16H41/24F16H61/0267F16H61/142F16H2045/0215F16D25/14F16H45/02F16H61/14
Inventor J·博斯顿E·J·曼宁B·D·瑙曼
Owner CATERPILLAR INC