What brake systems are better now?

The advantage is to improve driving safety, and the disadvantage is mainly because some problems have not been solved in the current technology, such as: sudden braking, low probability of braking success, low intelligence level and other reasons. It is unrealistic to completely avoid a car accident with active braking, and it should be said that it reduces the degree of harm caused by a car accident.

At this stage, most car manufacturers use millimeter-wave radar mainly because of the cost problem, the disadvantage of millimeter-wave radar is that the detection distance is short, if the cost of lidar is reduced, more intelligent, the future driving will be safer. 1 In terms of speed, the models with active braking systems currently on the market are all urban systems, and the speed is used below 80 yards, and it is a dynamic speed, so it is actually difficult to play a role in the static speed of 80 yards. Automobile manufacturers from the cost is to consider, the factory with its own active braking system of the vehicle is almost all microwave radar, the detection distance of microwave is about 10 meters, so it is also determined that the speed is not guaranteed to play a role, and the detection distance of lidar is about 150 meters, the accuracy is higher, especially in the high speed of the risk factor can play an effective role, but the cost of lidar is more than 5 times that of microwave radar.

I have tested a number of vehicles with active braking systems at the factory, and I am impressed by the products of the independent R&D company Delubang, which are dynamically tested at 130 yards at high speeds, with good performance and superior performance. Whether it is Mercedes-Benz, Volvo, Audi and other built-in systems, the current technical level can only be regarded as average. Europe and the United States have introduced relevant policies in 13 years, requiring that cars put on the EU market in the future must be installed, the United States is officially in 2022, and China is in May this year to introduce a policy, from the strong installation of buses, it will take time to achieve universal installation.

If you simply look at the braking effect, it must be that the four-wheel disc brake is better, but in the case of the vehicle weight does not exceed the ton, the braking effect of the front disc and rear drum also meets the relevant performance requirements.

While the disc brake has a better effect, the cost of loading and maintenance are higher, which need to be paid by the car buyer and the user themselves, and there is no drum brake to be more durable.

From a comprehensive point of view, below the compact car, including the lighter mid-range car, it is more reasonable to use the front disc and rear drum, and it is also relatively durable and economical.

Hello, generally speaking, today's cars use disc brakes to achieve braking.

1. Drum brake.

Drum brakes are a traditional braking system that works on a coffee cup. The brake drum is like a coffee cup, when you put five fingers into the rotating coffee cup, the fingers are the brake pads, as long as you put five fingers outward and rub the inner wall of the coffee cup, the coffee cup will stop rotating.

2. Disc brake.

Similarly, the working principle of disc brakes can be described as a disc, when you pinch the rotating disc with your thumb and forefinger, the disc will also stop spinning Disc brakes on cars are composed of a brake oil pump, a brake disc connected to the wheels, and a brake caliper on the disc When braking, the high-pressure brake fluid pushes the piston in the caliper, pressing the brake shoes against the brake disc to produce a braking effect.

3. Disc brakes.

As the speed of automobiles continues to increase, the total weight of trucks and buses continues to increase. In addition, the center of gravity of the car is generally lowered and the tires with small diameter and wide section are widely used, so that the brake installation position is limited, so the disc brake with better braking thermal stability is used on heavy trucks and cars.

Drum and quiet braking: Install two semi-circular brake pads in the wheel hub, and use the "lever principle" to push the brake pads to make the brake pads contact with the inner surface of the wheel drum and cause friction.

Disc brakes: Control the two brake pads with the brake calipers to clamp the brake discs on the wheels. When the brake pads clamp the disc, friction is created between them.

Advantages of drum brakes:

1. It has the function of automatic braking, so that the braking system can use lower oil pressure, or use a leather brake drum with a diameter much smaller than the brake disc.

2. The installation of the hand brake mechanism is easy. Some models with disc brakes on the rear wheels will install a hand brake mechanism with drum brakes in the center of the brake disc.

3. The processing and composition of parts are relatively simple, and the manufacturing cost is relatively low.

Advantages of disc brakes:

1. The heat dissipation of disc brakes is better than that of drum brakes, and it will not cause brake recession and brake failure when continuously stepping on the brakes.

2. The change in the size of the brake disc after being heated does not increase the stroke of pressing the brake pedal.

3. The disc brake system responds quickly and can do high-frequency braking actions, so it is more in line with the needs of ABS system.

You can choose one of the two.

The brands of the brake Sakura system include Bosch, Woori, Frodo, Archipolo, Golden Kirin, etc.

Bosch: The Bosch Group is one of the world's top 500 multinational companies. It was founded in 1886 by Robert Bosch in Stuttgart, Germany.

Bosch has a complete range of brake hail friction pads on the aftermarket, with more than 170 formulations, many models suitable for different parts of the world. Bosch's formulation system has been specified as standard by most automotive brands.

Excellent strength:

Honeywell Friction Materials is the world's leading manufacturer of friction materials. Its two major brands, Bedders Brake Pads and Woori Brake Pads, are well-known in the industry. The world's major automakers, including Mercedes-Benz, BMW, and Audi, have chosen Honeywell brake pads as original kits.

Frodo: Ferrodo friction products have always been the designated products of the world's Formula 1 racing cars, with the world's largest production and sales, and are known as the "father of brake pads". In 1897, the world's first brake pads were manufactured.

In 1995, the global market share of the original factory was nearly 50%, and the output was the first in the world.

Archiporo: Archiporo brake pad products are used in all types of vehicles, including passenger cars, motorcycles and other commercial vehicles and motor vehicles. It is the top brake pad manufacturer in Japan.

Golden Kylin: Shandong Golden Kylin Group is the largest export-oriented private state-level high-tech enterprise in China's automotive brake pad manufacturing industry.

Millions of car purchase subsidies.

The autonomous braking system is pretty much the same:

1. Active braking system. When the speed of the vehicle reaches 30 km h, the system will automatically activate and monitor the traffic situation through the lidar system on the windshield in front of the car, especially within 6 meters in front of the front of the car.

2. When the car in front brakes, stops or has other obstacles, this system will first automatically increase the force on the brake system to help the driver shorten the braking distance before making an action;

3. Or it can also change the driving path of the vehicle by adjusting the steering wheel to avoid obstacles. Of course, if you are already close to an obstacle, the system will automatically brake urgently without the driver's intervention.

Brake pedal. The pedal assembly plays the role of a lever, after pressing the brake pedal, the pedal exerts force to the master cylinder piston, and the pedal is in the cab, which is easy to operate.

What are the components of the automotive braking system?

Brake master cylinder. The brake master cylinder is a hydraulic pump that generates the pressure used for braking and distributes the pressure to the four-wheel cylinder through the master cylinder.

What are the components of the automotive braking system?

Brake lines. In order to according to the shape of the car, the brake pipeline is also ever-changing, and the pipeline is divided into rubber hose and iron pipe, which is mainly used to transport brake fluid.

What are the components of the automotive braking system?

Brake load proportional valve.

The proportional valve is generally located in the rear brake line, which restricts the pressure on the rear brake by sensing the weight of the vehicle to change the rear brake situation, which can also be called mechanical ABS.

What are the components of the automotive braking system?

Brake booster.

Boosters are divided into vacuum boosters and hydraulic boosters, and most cars use vacuum boosters to reduce the driver's pedal force and increase braking safety by using the vacuum of the car.

What are the components of the automotive braking system?

Brake fluid. Brake fluid is a special oil, which is a necessary condition for braking, and the brake fluid is corrosive and should be cleaned with a lot of water when it gets wet.

What are the components of the automotive braking system?

Brake cylinders, brake pads.

There are brake cylinders and brake pads on each wheel, and the brake pads are wear parts, which need to be replaced after a certain level of wear.

What are the components of the automotive braking system?

What are the components of the automotive braking system?

Active braking is still very good. The city security system monitors traffic conditions through a lidar system on the front windshield. When the vehicle in front brakes, stops, or has other obstacles, it automatically applies force to the braking system first, helping the driver shorten the braking distance before making a move.

Or change the vehicle's path by adjusting the steering wheel to avoid obstacles.

If the vehicle is too close to an obstacle, the system will automatically and urgently brake without the need for the driver. This technology can not only effectively avoid injury to pedestrians in front, but also play an effective role in large and medium-sized cities with traffic congestion, because long-term congestion in urban driving will distract the driver's attention, and with this function you can avoid rear-end collisions. Active braking technology also enables active deceleration at high speeds, reducing risk and bending losses.

Automotive safety systems are mainly divided into active safety systems and passive safety systems. The active braking system is part of the vehicle's active safety system, which uses communication technology and electronic monitoring to sense the dynamics around the vehicle and assist the driver in safety configuration. Our common active safety systems include electronic devices such as ABS, ESP, AEB, etc.

Generally, the safety design concept of the car is based on: when the accident does not occur, the active safety system reduces the probability of the accident; If a hazard is identified, the risk of injury will be reduced through a number of preventive measures; In the event of an accident, the passive safety system provides protection for the driver; Further measures taken after the accident facilitated the rescue work.

Volvo's CitySafety, Mercedes-Benz's Pre-Safe and EBA are undoubtedly moving closer to smarter autonomous driving. As consumers, we should be rational. On the one hand, we must see that automotive intelligence is the general trend of future development, and we must learn to accept it.

On the other hand, even with a variety of high-tech safety equipment to protect ourselves, we still need to regulate personal driving behavior and improve safety awareness. At least at this stage, intelligence is premised on safe driving.

Millions of car purchase subsidies.