Hydraulic control system for automatic transmission
A technology of hydraulic control system and automatic transmission, which is applied in the direction of transmission control, fluid pressure actuation system components, and components with teeth, etc., which can solve the problems of high cost and difficult control of the solenoid valve system, and reduce production costs , the effect of reducing the difficulty of control
Active Publication Date: 2021-01-05
CHINA FIRST AUTOMOBILE
View PDF11 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Based on the above, the object of the present invention is to provide a hydraulic control system for an automatic transmission, which solves the problems of high system cost and difficult control caused by the large number of solenoid valves 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
[0025] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describin...
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 relates to the technical field of hydraulic control for automatic transmissions, and discloses a hydraulic control system for an automatic transmission. The hydraulic control system forthe automatic transmission comprises a pilot pressure regulating valve, a gear operation structure which comprises a pressure regulating valve, and a parking locking structure which comprises an oil inlet sliding valve, an oil discharge sliding valve and a parking locking assembly, wherein the parking locking assembly comprises a pushing piece, a stopping piece, a shell body and a parking piece; the parking piece is connected with the pushing piece; part of the pushing piece stretches into a chamber and divides the chamber into a first chamber and a second chamber; the stopping piece is arranged in the first chamber; a first oil inlet cavity of the oil inlet sliding valve communicates with the pilot pressure regulating valve; a first oil inlet port of the oil inlet sliding valve can communicate with the pressure regulating valve; and a second oil inlet port of the oil outlet sliding valve can communicate with a pipeline between the pressure regulating valve and the first oil inlet port. According to the hydraulic control system for the automatic transmission, the additionally-arranged oil inlet sliding valve and the additionally-arranged oil discharge sliding valve are both mechanical valves, so that the production cost is reduced, and the control difficulty is lowered.
Description
technical field [0001] The invention relates to the technical field of hydraulic control of an automatic transmission, in particular to a hydraulic control system of an automatic transmission. Background technique [0002] In order to realize the hydraulic parking function (that is, to switch the vehicle to the parking gear), the hydraulic control system of the existing automatic transmission usually adopts a locking solenoid valve, at least one pressure regulating solenoid valve and several mechanical valves, and at least two solenoid valves are added. The valve not only increases the cost of the system, but also occupies more ports of the automatic transmission control unit, making the control more difficult. Contents of the invention [0003] Based on the above, the object of the present invention is to provide a hydraulic control system for an automatic transmission, which solves the problems of high system cost and difficult control caused by the large number of solen...
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): F16H63/34F16H61/02F15B1/02F15B21/041F15B21/0423
CPCF16H63/34F16H63/3408F16H63/3483F16H61/0265F16H61/0267F15B21/0423F15B21/041F15B1/02F16H61/0206
Inventor 毛泽贤唐立中宋建军陈建勋
Owner CHINA FIRST AUTOMOBILE