Controller for bus gear box and automatic gear shifting control method thereof

Abstract

The invention discloses a controller for a bus gear box and an automatic gear shifting control method thereof. The controller comprises a main controller, a temperature detection sensor, a vehicle speed signal processing unit, a vehicle speed detection sensor and an output signal processing unit, wherein the output end of the output signal processing unit is connected with a hydraulic operation system; the output end of the hydraulic operation system is connected with the gear box and a clutch; the vehicle speed signal processing unit comprises an analog / digital (A / D) converter and a filter circuit; and the hydraulic operation system comprises an electromagnetic valve I, an electromagnetic valve II, a pump relay, a shifting actuation cylinder, a clutch actuation cylinder and a hydraulic pump. The method comprises the following steps: I. acquisition and transmission on temperature and vehicle speed signals; II. processing on the temperature and vehicle speed signals and identification on bus running state; III. A / D conversion on control signals; and IV. control on the clutch, gears and the hydraulic pump. The controller for the bus gear box has a reasonable design, simplicity and convenience in operation, high intelligent degree and good stability and comfortableness, is capable of prolonging the service life of the gear box and is economic and practical.

Description

technical field [0001] The invention belongs to the technical field of automatic control of a transmission of a bus, and in particular relates to a controller of a transmission of a bus and an automatic speed change control method thereof. Background technique [0002] The gearbox is one of the key components of the car, and it mainly has the following four functions: 1. Change the driving size of the car and the torque on the driving wheel of the car in a large range; 2. Realize reverse driving; 3. Realize neutral gear. If there is a fault in the gearbox, the car will have the following eight faults: 1. When the gear is engaged, it cannot enter the gear smoothly; 2. After the gear is engaged for more than 1 second, the brake is released, and the vehicle is weak and cannot start automatically; 3. The speed cannot be increased. OK, after reaching a certain speed, step on the accelerator, but the acceleration has no effect; 4. When the gearbox shifts, the gear cannot be diseng...

AI Technical Summary

Problems solved by technology

However, most of the gearboxes used in buses today are products from the 1990s. They are operated by the driver's technical ability, the use changes frequently, and the general technical performance of cars is poor. The disadvantages are: early damage to the gearbox , early damage to the clutch, early damage to the transmission system, affecting the quality of bus service, troublesome maintenance, high replacement costs, if not found and repaired in time, it is easy to cause major traffic accidents

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