Starting in July this year, N2 vehicles with no ABS installed (trucks with a total mass of 3.5 tons and a weight of 12 tons) have not been allowed to board. At present, most of the N2 vehicles on the market are still using load-sensing proportional valves. During the actual visit, we found that many users have no concept of ABS and load-carrying proportional valves, and can only listen to sales. Fudge. Therefore, the truck house specializes in the following aspects, hoping to help card lovers.
â— Which anti-lock function is stronger?
The load-sensing proportional valve is a set of hydraulic machinery installed on the pipeline between the master cylinder and the rear wheel brake cylinder. Its working principle lies in judging the vehicle load according to the distance between the girder and the axle, and making repeated actions to continuously adjust the rear wheel braking force, so as to ensure that the proportion of the front and rear wheel load during driving is maintained in an appropriate state, thereby reducing the emergency The possibility of wheel locking during braking.
ABS is called the anti-lock braking system and is a standard safety device commonly used in the world. The working principle of ABS is to rely on the speed sensor installed on the wheel and the vehicle speed sensor on the body to control the braking force through the computer. When an emergency brake is encountered, once a wheel is found locked, the computer immediately instructs the pressure regulator to decompress the wheel's brake cylinder to return the wheel to rotation.
Therefore, the working process of ABS is actually a cyclical work process of “locking-releasing-locking-releasingâ€. The tires of vehicles are always in an intermittent rolling state of critical locking, which can effectively overcome the “running bias†during emergency braking. Side slip, tail flick, etc. to prevent the body from losing control.
â— Safety Considerations Loaded Proportional Valves Are Used in Light Loads
As far as the current market status is concerned, most passenger cars and commercial vehicles are equipped with ABS for dangerous goods transport vehicles and high-grade cars. Pickups and light trucks are still less equipped. With the promulgation of relevant laws and regulations, special models such as trucks with more than 12 tons and tractors must be equipped with ABS. While greatly improving vehicle safety, it also reduces maintenance costs. We have learned that the simplest set of ABS costs must be more than 1,500 yuan, and the high price makes it impossible for users who choose a low-profile model and have insufficient budget.
On the other hand, the cost of a set of proportional valves requires only 200 yuan. The economical price makes it widely used on light trucks and low-end off-road vehicles, and it is durable. If I do not understand the role of the two, in the face of sharp price differences, I will not hesitate to choose to use a proportional valve to make do with it. In fact, it is not a single point that the braking effect of the two is poor.
In simple terms, the load-sensing proportional valve can only reduce the probability of wheel lock during emergency braking, but it basically fails in the case of ice or snow. In any case, it is impossible for a ABS-equipped vehicle to produce wheel locking. The national mandatory N2 vehicle needs to install ABS, and specific to the vehicle type means that the light truck needs to install ABS. In view of this, it is estimated that ABS will be widely used in various types of trucks in the future, and only micro-cards less than 3.5 tons will not be deployed for the time being.
â— Responsive regulations can use hydraulic ABS economy
ABS is divided into hydraulic ABS valve and electronic ABS two. With the state mandatory light trucks need to install ABS, which means that the cost of car purchases. This we must remind the majority of card friends, the price is not able to measure the security, so the best conditions to try to configure ABS.
Hydraulic ABS is more versatile, so long as it is a hydraulic brake device can be used, so the use of oil brake trucks are generally with hydraulic ABS. Compared to the electronic ABS, the hydraulic ABS is small in size and takes up less space, so it is more economical and practical. A set of hydraulic ABS prices around 1500, taking into account the safety and price, as the current lighter load on the market, Jiangling light truck, Iveco beyond the C300 are using hydraulic ABS valve.
Electronic pressure ABS body valve solenoid valve, need to be designed according to different models, it requires professional installation of technology, so the cost is also higher, a set of imported ABS system needs more than 5,000 yuan, a set of domestic down at least 2000 Diversified. Currently on the market, such as Iveco over the C500, Omar 5 series such as pulling the heavier light trucks, use of air brakes and configure the electronic ABS. In addition, some of the lighter-loaded high-capacity light trucks will also come standard with ABS. For example, the Jianghuai Jun Ling V6, which was listed at the beginning of the year, already comes standard with ABS.
â— Postscript
ABS has the advantages of effectively maintaining the stability of the steering control during the emergency braking, reducing the floating phenomenon of the car and reducing the wear of the tire. Therefore, whether it is empty or full load, the rain and snow roads are still dry, and the ABS can effectively To protective effect. The load-sensing proportional valve can effectively avoid the side slippage only when it is under full load or on a dry road, and it basically fails when it is on ice or snow surface. By contrast, a car with ABS installed will be much safer than a car with a load sensing proportional valve only.
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