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Recently, the reporter received a phone call from some large truck drivers. They complained that some transportation companies have asked manufacturers to remove ABS in order to reduce the cost of car purchase. Some manufacturers have also dismantled the ABS in order to reduce the selling price. ABS, according to the requirements of GB 7258-2004 "Motor Vehicle Operational Safety Technical Conditions" (hereinafter referred to as "conditions"), these commercial vehicles must install ABS.
"Conditions" is the basic guarantee for the safety of commercial vehicles
"Conditions" is the most basic technical regulation of China's motor vehicle safety technology management, and it is also one of the important national standards promulgated by the automobile industry in recent years. It is the safety registration of new vehicles of the public security traffic management department, the regular inspection of vehicles in use, and the inspection of accident vehicles. The main technical basis for technical inspection is also one of the important technical bases for the mandatory inspection of new vehicles for motor vehicles in China, the inspection of new vehicles and the inspection of imported vehicles.
The background of the "Conditions" is that with the rapid growth of car ownership, China has become one of the countries with the highest traffic accident rates in the world. China formulated and promulgated relevant laws and regulations in 2004 and enforced them in 2005.
The absence of enforcement leads to low ABS loading rate
According to the "conditions", long-distance passenger cars and tourist buses with a total mass of more than 12 tons, with a total mass of more than 16 tons, are allowed to be connected to trucks with a total mass of more than 10 tons, and trailers with a total mass of more than 10 tons must be installed in accordance with GB/T. 13594 Specified ABS. Shortly afterwards, the relevant authorities issued the "Notice on the Implementation of Newly Enforced Projects in the Technical Conditions for the Operation of Motor Vehicles in GB7258-2004", requiring all new registrations within the scope of the standard restriction from February 2005 onwards. The vehicle must have ABS installed.
Although China introduced regulations concerning the safety of commercial vehicles, people in the automotive industry admit that in the existing standards and regulations, although the provisions for securing the safety of commercial vehicles require trucks and buses to install ABS, the effect of the final implementation is not Do your best.
According to report, in the domestic commercial vehicle industry, some manufacturers and users have insufficient understanding of ABS, which also leads to a lower loading rate of ABS. According to the requirements of the country, since 2005, all large and medium-sized passenger cars and heavy-duty trucks produced should be equipped with ABS, but the actual supporting situation is far from meeting this requirement. At present, some truck manufacturers have not started to install ABS on their own products. Even if they are equipped, many companies will use them as optional devices.
In some areas, the existing regulations are not strictly enforced. There have been cases where commercial vehicles with ABS should be installed but they have not been installed. Some people in the vehicle management department even stressed that they cannot judge whether commercial vehicles are equipped with ABS or not. Due to the poor management of individual places, some commercial vehicles do not install ABS in accordance with national standards, but they can still apply for license plates.
In the market, some manufacturers “see the conditions†for the sake of sales. According to the reporter's understanding, some commercial vehicle customers have asked manufacturers not to install ABS in order to reduce the cost of purchase. Some commercial vehicle manufacturers demanded that they "satisfaction" and remove the ABS system. How much can this cost be saved? A person from a foreign commercial vehicle ABS manufacturer disclosed that they use a ABS with 4 sensors and 4 solenoid valves for commercial vehicles. Whether it is the product of a domestic joint venture or a wholly-owned factory, the ex-factory price is between RMB 5,000 and RMB 6,000. Compared with the price of several hundred thousand yuan of commercial vehicles, it is insignificant. If only because of this little cost to give up the installation of ABS, manufacturers and owners are too short-sighted.
ABS will become the standard configuration for commercial vehicles
According to the introduction of WABCO, a professional manufacturer of commercial vehicle ABS, in recent years, changes in commercial vehicle brake systems have mainly been reflected in electronic vehicle control systems. In European regulations, since October 1991, the total mass was greater than 16 tons of N3 vehicles must be equipped with ABS. Starting from March 2001, all light trucks and light trucks with a total weight of more than 5 tons must also have ABS installed.
Judging from the requirements of China's commercial vehicle safety regulations, the general installation of ABS for domestic commercial vehicles will also become the future development trend and inevitable.
According to information obtained from an interview with reporters, at present, in the commercial vehicle sector, the installation rate of passenger cars for ABS is relatively high, especially large and medium-sized passenger cars. According to statistics, the sales of ABS in the passenger car industry in China in 2005 was more than 50,000 sets. The proportion of trucks installed is very low. Heavy-duty trucks comply with national mandatory requirements. If all ABS are installed, this part of the sales volume is about 60,000 units. However, due to various reasons, the actual number is far below this figure. As for the card and light trucks, according to analysis by industry experts, the current domestic assembly rate of ABS is less than 1%, and almost no standard configuration, but some models have ABS as an optional configuration.
Therefore, in 2005, the amount of ABS in the light-duty truck market was less than 9,000 units. The reason for this is that currently China's light truck industry is highly competitive and product profits are relatively low, and the cost of installing ABS is not a small expense for most light truck companies and many vehicle owners.
The semi-trailer tractors are capable of undertaking transportation, and are classified as heavy trucks in accordance with the national classification criteria for trucks. Therefore, they follow the "new notice of mandatory provisions in the implementation of GB 7258-2004 "Technical conditions for the safe operation of motor vehicles." "Requirements should all be equipped with ABS devices, that is, theoretically, the sales of ABS in this part of the product in 2005 should be about 56,000 sets, and the actual quantity may be much lower than this number."
The company's standard cooling tower according to the international design conditions design, can also provide customers with non-standard operating conditions or specific sizes under the special, special design.
The circulating water pump suction port shall be located below the water level of the cooling tower catchment basin, and the cooling tower outlet pipe shall not be allowed to be higher than the maximum water level of the catchment basin.
Pipe mounts should be pipe racks and cooling towers should not be allowed to directly bear the weight of the pipes.
The rehydration pipe of the cooling tower should be provided with a support stand to avoid vibration of the pipe when the float valve is rehydrated.
Rehydration pressure should be below 5m water pressure, national standard
The flannage pressure is 1.0Mpa.
When two or more units are assembled, our company will provide a connecting balance tube to balance the chassis water level. The tower top inlet should be set with a conditioning valve in order to enter each
.The water level of the tower is uniform.
The noise is measured at dm1.13VL-W at the equivalent diameter of the cooling tower (Dm1.13VL*W), 1.5 meters above the ground height, wherein L and W are the shape rulers of the tower
inch long and wide).
The use of cellular continuous blister series of diversion,heat dissipation, water collection three-in-one native filler, the whole suspension, gravity cloth water, low drop of water, with cold effect
High, low energy consumption, less drift water, less noise and so on, floating water rate is less than 0.001%.
When connecting different types of towers, the bottom basin water level height of different types of towers must be taken into account, and the base height must be adjusted to maintain the water level balance of the towers.