Hydraulic retarder control device and control method based on switch type electromagnetic valve
A hydraulic retarder and control device technology, applied in the direction of brakes, etc., can solve the problems of poor vibration resistance and high cost of compressed gas control, and achieve the effects of good vibration resistance, low cost and fast response
Pending Publication Date: 2021-06-22
FAW JIEFANG AUTOMOTIVE CO
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[0003] The object of the present invention is to provide a hydraulic retarder control device and control method based on a switch type solenoid valve to solve the problems of high control cost and poor vibration resistance of compressed gas in the hydraulic retarder
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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...
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The invention belongs to the technical field of commercial vehicle hydraulic retarder control, and discloses a hydraulic retarder control device and method based on a switch type electromagnetic valve, the hydraulic retarder control device based on the switch type electromagnetic valve comprises a pressure limiting valve, a relay valve, an air inlet electromagnetic valve and an exhaust electromagnetic valve, an inlet of the pressure limiting valve is connected with an air source, an air inlet of the relay valve is in fluid connection with an outlet of the pressure limiting valve through a first gas pipeline, an air outlet of the relay valve is in fluid connection with the hydraulic retarder, and the air inlet electromagnetic valve is in fluid connection with the outlet of the pressure limiting valve through a second gas pipeline; the exhaust electromagnetic valve is in fluid connection between an air outlet of the air inlet electromagnetic valve and a control piston upper cavity of the relay valve; the air inlet electromagnetic valve and the exhaust electromagnetic valve are both switch type electromagnetic valves. The two switch type electromagnetic valves are adopted to control the relay valve, accurate control over the pressure of compressed gas can be achieved, and the beneficial effects of being fast in response and low in cost are achieved.
Description
technical field [0001] The invention relates to the technical field of commercial vehicle hydraulic retarder control, in particular to a hydraulic retarder control device and control method based on an on-off solenoid valve. Background technique [0002] At present, most hydraulic retarders use compressed gas to push hydraulic oil into the working chamber of the stator and rotor in the hydraulic retarder to realize the retarding function. The valve body that controls the compressed gas entering the hydraulic retarder mostly adopts an integrated proportional solenoid valve, which has the problems of high cost and poor vibration resistance. Contents of the invention [0003] The object of the present invention is to provide a hydraulic retarder control device and control method based on an on-off solenoid valve to solve the problems of high control cost and poor vibration resistance of compressed gas in the hydraulic retarder. [0004] For reaching this purpose, the present...
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Login to View More IPC IPC(8): B60T10/00
CPCB60T10/00
Inventor 张军万里恩陈宇超马明武李法兵曲健刚刘明明乔艳辉和光宇贾玮琦
Owner FAW JIEFANG AUTOMOTIVE CO