Direct driving type hydraulic device for stepless transmission and automobile stepless transmission
A continuously variable transmission and hydraulic device technology, applied in fluid pressure actuation devices, transmission device control, components with teeth, etc., can solve the problems of slow speed change response and poor control accuracy, and achieve fast speed change response and oil circuit Simplified, high-precision control effects
Active Publication Date: 2015-04-01
HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED
View PDF10 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The object of the present invention is to provide a direct-drive hydraulic device for a continuously variable transmission and a continuously variable transmission for automobiles, so as to solve the technical problems of poor control accuracy and slow response of the hydraulic control device to the speed change process of the continuously variable transmission in the prior art
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0023] see figure 1 , The direct-drive hydraulic device for continuously variable transmission provided by the present invention includes a driven pressure control valve 100, an active pressure control valve 200, a hydraulic oil output node and connecting pipelines connecting the hydraulic oil output node and the inlets of the valves. The active pressure control valve 200 is connected with the active cylinder 450 controlling the active wheel set in the continuously variable transmission, and is used to control the pressure of the active cylinder 450 . The slave pressure control valve 100 is connected with the slave cylinder 430 controlling the driven wheel set in the continuously variable transmission, and is used to control the pressure of the slav...
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
Login to View More Abstract
The invention provides a direct driving type hydraulic device for a stepless transmission and an automobile stepless transmission. The direct driving type hydraulic device comprises a driving pressure control valve and a driven pressure control valve, wherein the driving pressure control valve is connected with a driving cylinder for controlling a driving wheel set in the stepless transmission and is used for controlling the pressure of the driving cylinder; the driven pressure control valve is connected with a driven cylinder for controlling a driven wheel set in the stepless transmission and is used for controlling the pressure of the driven cylinder; the driven pressure control valve comprises a driven electromagnetic coil set and a driven valve core arranged in the driven pressure control valve; the driven valve core slides along an inner wall of the driven pressure control valve under the driving of the driven electromagnetic coil set; the driving pressure control valve comprises a driving electromagnetic coil set and a driving valve core arranged in the driving pressure control valve; the driving valve core slides along the inner wall of the driving pressure control valve under the driving of the driving electromagnetic coil set. The hydraulic system of the device is simple in structure. After the device with the simple structure is applied to the stepless transmission, the control precision for speed ratio and clamping force during a speed-changing process is high and the speed-changing response is fast.
Description
technical field [0001] The invention relates to the field of automobile production, in particular to a direct-drive hydraulic device for a continuously variable transmission and a continuously variable transmission for automobiles. Background technique [0002] With the gradual development of the automobile industry, the loading volume of automatic transmissions has gradually increased, especially as a continuously variable transmission in automatic transmissions, which has brought a leap forward in the development of automobiles. The biggest difference between a continuously variable transmission and a common hydraulic automatic transmission is that the continuously variable transmission mainly uses the friction between the transmission belt and the driving and driven wheels to transmit the power of the driving wheel to the driven wheel, and the hydraulic device provides the clamping force of the transmission belt. . It has a smaller volume and a simpler structure, and the...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/30F16H61/662F15B13/06
CPCF15B13/06F16H61/30
Inventor 康明龙亚彬邓玉林吴付右罗威瞿道海李灿刘涛高帅
Owner HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED