Hydraulic control mechanism of clutch and automatic gearbox with hydraulic control mechanism
A technology of hydraulic control mechanism and clutch, applied in the field of hydraulic control mechanism of clutch and automatic transmission, can solve the problems of back gear shock and uncontrollable oil drain speed, and achieve the effect of solving back gear shock and reliable control.
Active Publication Date: 2014-12-24
HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED
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Problems solved by technology
[0003] The purpose of the present invention is to provide a clutch hydraulic control mechanism and an automatic transmission with the mechanism, so as to solve the technical problem of backlash impact caused by the uncontrollable oil discharge speed of the existing shift valve during the shift operation
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[0030] 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.
[0031] refer to figure 1 , the preferred embodiment of the present invention provides a hydraulic control mechanism of a clutch, the hydraulic control mechanism of the clutch includes a valve body 10 and a valve core 20 matched with the inner cavity 11 of the valve body 10, the inner cavity 11 of the valve body 10 At least one shift actuator 40 is communicated through the oil passage 30; the spool 20 includes: at least one valve core sealing section 21 corresponding to the at least one shift actuator 40, used to form a sealing fit with the valve body 10; the inner cavity 11 An oil return port 13 and an oil drain port 15 corresponding to the valve core sealing section 21 are provided, the oil return port 13 communicates with the oil passage 30, and t...
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The invention discloses a hydraulic control mechanism of a clutch and an automatic gearbox with the hydraulic control mechanism. The hydraulic control mechanism of the clutch comprises a valve body and a valve core matched with an internal cavity of the valve body, wherein the internal cavity of the valve body is communicated with at least one gear shifting execution mechanism through oil channels; the valve core comprises at least one valve core sealing section which is used for forming sealing fit with the valve body; the internal cavity is provided with oil return ports and oil draining ports, which correspond to the valve core sealing sections, the oil return ports are communicated with the oil channels, the valve core sealing sections are provided with overflow grooves matched with the oil return ports, and damping holes are further formed in the valve core sealing sections. Through forming the overflow grooves and the damping holes in the valve core sealing sections, the oil return ports of the valve body are not directly communicated with the oil draining ports, draining oil sequentially passes the overflow grooves and the damping holes and then is drained to an oil tank, and the damping holes play a role in controlling the oil draining speed of hydraulic oil in the process, so that the reliable control on the oil draining speed during clutch disconnecting is realized, and gear back shock caused during gear shifting is effectively solved.
Description
technical field [0001] The invention relates to the field of automobile transmission control, in particular to a clutch hydraulic control mechanism. In addition, the present invention also relates to an automatic transmission comprising the above-mentioned hydraulic control mechanism. Background technique [0002] With the gradual development of the automobile industry, the application of automatic transmissions is also promoted, and the hydraulic system plays an irreplaceable role in the automatic control program of automatic transmissions. The shift valve spool used in the traditional automatic transmission hydraulic system is only used as a manual selector valve without other additional functions, that is, the traditional shift valve does not have the function of controlling the clutch oil drain speed, which causes The speed of the clutch oil drain is uncontrollable, and the clutch oil drains too fast, causing the clutch to disengage suddenly, the torque of the engine ac...
Claims
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IPC IPC(8): F16H61/40F16H61/18F16D48/02
CPCF16D48/02F16D2048/0221
Inventor 龙亚彬康明罗威吴付右邓玉林高帅刘涛
Owner HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED