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

Multi-speed transmission with an engine start/stop enabler

A transmission, motor vehicle technology applied in the direction of vehicle gearboxes, elements with teeth, multi-ratio transmissions, etc., capable of solving problems such as slip delay, clutch and/or brake disengagement, etc.

Active Publication Date: 2015-01-14
GM GLOBAL TECH OPERATIONS LLC
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can cause the clutches and / or brakes in the transmission to disengage completely
When the engine is restarted, these clutches and / or brakes may take time to fully re-engage, thereby creating slip and delay between the engagement of the accelerator pedal or the release of the brakes and the motion of the motor vehicle

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
  • Multi-speed transmission with an engine start/stop enabler
  • Multi-speed transmission with an engine start/stop enabler
  • Multi-speed transmission with an engine start/stop enabler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or use.

[0076] It should be understood at the outset that in the particular example provided, the eight-speed automatic transmission of the present invention has an arrangement of permanent mechanical connections between the elements of the four planetary gear sets. These mechanical connections are generally associated with or associated with transmission embodiments. More specifically, a first component or element of a first planetary gear set is permanently coupled to a first component or element of a second planetary gear set. A second component or element of the first planetary gear set is permanently coupled to a third component or element of the fourth planetary gear set. A third component or element of the second planetary gear set is permanently coupled to a third component or element of the third planetary gear set. A second component or element...

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 transmission includes an input member, an output member, four planetary gear sets, and a plurality of torque transmitting mechanisms that are selectively engageable to establish at least ten forward speed ratios and at least one reverse speed ratio between the input member and the output member. The transmission further includes one or more locking mechanisms that engage one or more of the plurality of torque transmitting mechanisms during a start / stop event.

Description

technical field [0001] This invention relates to multi-speed transmissions. More specifically, the present invention relates to multi-speed transmissions including engine start / stop enablers. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] A typical multi-speed transmission uses a combination of multiple torque-transmitting mechanisms, planetary gearing, and fixed interconnections to achieve multiple gear ratios. The number and physical arrangement of planetary gear sets is usually dictated by packaging, cost and desired speed ratios. Typically, a transmission includes a hydraulic control system for, among other functions, actuating a number of torque-transmitting devices and providing lubrication and cooling to components of the transmission. [0004] While current transmissions fulfill their intended purpose, there is a virtually constan...

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): F16H3/66
CPCF16H3/62F16H57/023F16H3/66F16H2200/0069F16H2200/2012F16H2200/2046
Inventor C.M.博肯斯特特C.E.梅林P.G.奥塔内斯C.S.罗斯
Owner GM GLOBAL TECH OPERATIONS LLC