Automobile emission and automobile comprehensive safety inspection method

Abstract

The invention discloses an automobile emission and automobile comprehensive safety inspection method. An inspection platform is adopted for detection. The inspection platform comprises a platform body, wherein the platform body is provided with four groups of single-shaft detection units which are in one-to-one correspondence with four wheels of an automobile. The inspection platform further comprises a front and rear axle transmission system, and inter-wheel clutches corresponding to the four wheels one by one are arranged in the front and rear axle transmission system. The inspection method comprises an ABS inspection part, an EBD inspection part and an environmental protection inspection part. When ABS and environmental protection inspection is carried out, the inter-wheel clutch is in a connected state, and when EBD inspection is carried out, the inter-wheel clutch is in a disconnected state. According to the method, effective detection of ABS and EBD and consideration of ABS and EBD are realized, and the method has advantages of environmental protection, low cost, wide vehicle type coverage and the like.

Description

technical field [0001] The invention relates to an automobile inspection method. Background technique [0002] Safety testing and environmental testing are the main vehicle testing items. The existing brake performance or environmental protection detection devices have the following defects: [0003] (1) It is difficult to realize the effective detection of ABS and EBD. [0004] When emergency braking occurs, EBD will automatically compare the sliding rate of the rear tires based on the weight of the vehicle body and road conditions before the action of the ABS. If it is found that the difference must be adjusted, the brake oil pressure system will Oil pressure to the rear wheels is adjusted for a more balanced and idealized braking force distribution. Therefore, the detection of EBD must simulate different road conditions for each wheel, and at the same time, it is necessary to ensure that the vehicle reaches the corresponding speed. [0005] There are three main inspec...

AI Technical Summary

Problems solved by technology

This method is not suitable as a means of consistency inspection for automobile factories due to factors such as site restrictions and the influence of rain and snow.

[0008] The third type: in the vehicle inspection field, if the road test method is used, it is necessary to reserve a road test track of 80 meters long x 6 meters wide = 480 square meters for the small car inspection line, and 100 meters long x 6 meters wide for the large vehicle inspection field =600 square road test track requires high site cost

In the existing inspection, either the method of the proving ground cannot be popularized due to the limitation of the site, or the limitation of the road test is affected by the rain and snow, or the off-line inspection of the OEM is limited to the inspection of whether the device is working normally, and it is difficult to realize the inspection of each vehicle. Must check

Therefore, the existing technology cannot accurately understand the active working conditions of the active safety anti-lock braking system ABS when the vehicle is running at high speed, which is the main hidden danger of safety accidents

[0011] (2) It is difficult to balance ABS detection and EBD detection

[0012] As mentioned above, currently the ideal solutions for ABS and EBD detection are all realized through road tests, but ABS and EBD have different requirements for road conditions, which determines that it cannot be completed through a single site or device, and there are occupancy Disadvantages such as large area and high cost

[0013] (3) In the process of environmental protection emission testing, polluting the environment and interfering with the power grid

The basic principle of the eddy current dynamometer is that the car operates under the typical working conditions required by the regulations, and the kinetic energy output by the car's working conditions drives the rotor to cut the magnetic field lines in the magnetic field to generate a counter electromotive force to retard the rotation of the wheels, form an eddy current, convert it into heat energy and dissipate it into the air , the kinetic energy output by the car cannot be recovered and released into the atmosphere as heat, which increases the greenhouse effect and is not conducive to environmental protection

At the same time, during the conversion process, the stator also needs to absorb the current excitation of the power grid and consume electric energy, which indirectly causes an increase in power generation, increases the amount of coal burned, and is not conducive to environmental protection

[0016] At the same time, the inductive reactive power of the eddy current machine will also cause interference to the power grid

[0017] (4) The current testing platform mostly uses a single-axis dynamometer, which can only detect two-wheel drive vehicles, but cannot detect four-wheel drive vehicles.

[0018] (5) Safety inspection and environmental protection inspection are both inspected separately, vehicles need a lot of waiting time, the inspection efficiency is low, and the facilities occupy a large amount of space, and the investment cost is high

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