Full-time four-wheel drive transfer case control system for commercial vehicle
A technology for control systems and commercial vehicles, applied in the direction of transmission control, transmission, differential transmission, etc., can solve the problems of complex circuit design, high design cost, cumbersome circuits, etc., to reduce the failure rate, prevent wheel slipping, The effect of simplifying the circuit
Inactive Publication Date: 2021-06-22
DONGFENG COMML VEHICLE CO LTD
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Problems solved by technology
However, in this solution, each gear position of the toggle switch needs to control two solenoid valves at the same time, which leads to complex circuit design and high design cost.
At the same time, each solenoid valve also needs to be controlled by a relay, which further makes the circuit cumbersome and has a high failure rate
Method used
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[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0022] Such as figure 1 As shown, a commercial vehicle full-time four-wheel drive transfer case control system includes an air reservoir 6, a gear switch 2, a three-rod cylinder 1, a first solenoid valve 3, a second solenoid valve 4, a third solenoid valve 5, Differential lock switch 8, differential lock solenoid valve 9 and differential lock cylinder 7. The first solenoid valve 3, the second solenoid valve 4, the third solenoid valve 5 and the differential lock solenoid valve 9 are all normally closed solenoid valves. The air outlet of the air reservoir 6 is connected to the air pipe joint of the differential lock cylinder 7 through the differential lock solenoid valve 9, the control end of the differential lock solenoid valve 9...
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The invention relates to the technical field of automobile driving, in particular to a full-time four-wheel drive transfer case control system for a commercial vehicle. The full-time four-wheel drive transfer case control system comprises an air storage cylinder, a gear switch, a three-rod air cylinder, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, wherein an air outlet of the air storage cylinder is connected with a first air pipe joint of the three-rod air cylinder through the first electromagnetic valve, connected with a second air pipe joint of the three-rod air cylinder through the second electromagnetic valve and connected with a third air pipe joint of the three-rod air cylinder through the third electromagnetic valve; the control ends of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all connected with the gear switch; and the end of a piston of the three-rod air cylinder is connected with a gear shifting fork. On the premise that gear shifting of a transfer case is achieved only through one switch, each gear of the gear switch only needs to control one electromagnetic valve, and a circuit is greatly simplified.
Description
technical field [0001] The invention relates to the technical field of automobile drive, in particular to a commercial vehicle full-time four-wheel drive transfer case control system. Background technique [0002] Cars with time-sharing drive system cannot use 6×6 all-wheel drive on hard ground (pavement), especially on curves; easily damaged. The front, middle and rear wheels of the full-time drive vehicle will always maintain the driving mode, and the engine output torque will be distributed to the front axle and the middle and rear axles according to the set ratio when driving. The full-time drive system has more reliable driving force on hard roads (paved roads) and when it rains. Traditional full-time drive vehicles use multiple start switches to control the gear positions of the transfer case respectively, which is cumbersome to operate and takes up a lot of space. [0003] The Chinese patent application whose notification number is CN 201685706 U discloses a gear s...
Claims
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IPC IPC(8): F16H61/30F16H61/00F16H63/30F16H48/32
CPCF16H61/30F16H61/0009F16H63/3023F16H48/32
Inventor 蔚连浩张凯丽张常武张光哲廖宜剑
Owner DONGFENG COMML VEHICLE CO LTD