Handbrake use precautions
The handbrake is a very important function in the car. The scientific name is the auxiliary brake, and the function needless to say is to fix the car while parking and ensure safety. It is a very important unit in the car. However, the seemingly simple handbrake is also practical in its use. Understanding it can make better use of it. â— Structure At present, on the market, the hand brakes act on the rear wheels. Divided from the form of work, there are two main types: drum and disc. From the structural design is divided into the following four: Based on the drum brake handbrake: the design concept of family cars is affordable, due to cost constraints, many models are front and rear drum brakes, this type of car handbrake is based on the rear axle drum brakes to achieve, pull When the handbrake is pulled by a wire to control the rear brake shoe, braking is achieved. Disc brake-based handbrake: For models with rear disc brakes, the handbrake puller directly controls the caliper to achieve auxiliary braking. Structurally speaking, the first two kinds of handbrakes have relatively low manufacturing costs. They are equipped with a separate pull wire to control the brakes on the rear axle brake system, or drums or discs, which are mostly used in affordable family cars. Disc brake drum handbrake: This type of handbrake is mounted on the brake drum in the center position of the rear brake disc, handbrake pull wire control shoe, independent and disc brake control. Independent brake calipers (Niche models): This type of handbrake system is mostly found in super-runs, because some models use famous multi-piston high-performance brake systems and do not include a handbrake system. Therefore, an independent handbrake is designed. Small caliper. Of course, this kind of handbrake visibility is also very low. The above handbrake system has a slightly different structure but the same function is used to assist the vehicle in assisted braking. From the operation aspect, it is divided into mechanical handbrake and electronic handbrake. We will share the following two handbrake precautions and techniques. â—Use cautions 1, mechanical hand brake Avoid overstressing For the most common mechanical handbrake, first of all to pay attention not to pull up every time you park, pay special attention not to pull the head, because the metal is too stretched or will stretch for a long time will accelerate the deformation, resulting in accelerated handbrake Pulling brakes fade. The correct approach is to pull the handbrake until the rear wheel locks up and then lift it up 1-2 to ensure that it does not slip. Avoid using parking brakes on ramps for long periods of time If you are parking on a slope, it is not recommended to fix the car with a pure handbrake, because doing so will cause the handbrake to withstand too much braking force and accelerate the wear of the handbrake. The correct method is to first handbrake after parking, and then find some reliable bricks or other objects under the tires, after the wheel is fixed firmly, release the handbrake to force transfer to the four wheels, pull the handbrake again, let Wheel and handbrake together. If you are not sure, you can lock the shift lever into the first gear or reverse gear, which can do multiple insurance. However, the editor here still has to remind you that it is not a last resort and it is not recommended to park on the slopes, which will accelerate the wear and tear of parts of the vehicle. Do not pull the handbrake after snow and ice and car wash in winter Do not use handbrake after driving in winter and snow weather. We often encounter that after driving in snow, there will be a lot of snow on the inside of the fender. The snow may cover the handbrake cable and freeze it. When it is started again, it is very likely that the handbrake will not be able to release and cannot drive. . In addition, after the car wash in the winter should also pay attention to this issue, if you can not wipe the water on the handbrake timely clean, then do not pull up the handbrake while parking, use the gear or brick pad wheel instead of hand brake parking. Foot-type parking system is also a type of “handbrakeâ€. It is only controlled by foot pedals. It often appears on mid- to high-end models. The large-volume models include Camry (Detail Picture Quote) and Lacrosse (Detail Picture Quote ), Mercedes-Benz variety of models. One thing to note about using this handbrake is that you don't want to step on it all the time. Because the foot has a lot of power, it's very easy to step on the handbrake too deeply, which is bad for the life of the pull wire. Even if you use your feet, you are also interested in controlling the intensity. Do not be so embarrassed. Extreme conditions can help get rid of difficulties Handbrake can also play a role in helping to escape difficulties under certain conditions. If you are driving a rear-drive or four-wheel-drive vehicle, you can use the handbrake to assist the rear-wheel brake when the rear wheel encounters skidging and armpits, and your car is a model with a mechanical handbrake. The principle of relieving the trouble is to imitate the work of the differential lock, apply braking force to the two rear wheels, limit the rotation of the wheel on one side of the slip, and return the power to the wheel on the side with adhesion. Of course, this action can only be achieved if the following conditions are met: the rear drive, the mechanical handbrake, and the side wheels have adhesion. ★ Regular inspection For a mechanical handbrake, after a period of use, take a moment to check if it is possible to park effectively. It is recommended that once a year. Park the car on a slightly angled ground, wait for the slightest car to roll, pull it one by one until it can hold the car. If this point is relatively high, the handbrake will be pulled to the end of the car before it is stopped. It is recommended that the brake levers should be tightened at the repair shop to prevent accidents during use. 2, electronic handbrake Electronic handbrake is a simple and beautiful appearance, easy to use configuration, common configuration in the middle of the car, but the electronic handbrake response speed is relatively slow. We use hand to pull the handbrake about no more than 0.3 seconds, and the human control is more flexible than the electronic control, and starting the electronic handbrake requires a pre-conditional action on the brake, and the response time of the key (to avoid misoperation), and The motor runs for a long time, about 0.5 seconds. Even when the gas pedal is pressed, the electronic handbrake is automatically released, and this action is also somewhat abrupt. If extreme conditions occur during driving, pressing the electronic handbrake button can brake the vehicle. This situation is somewhat complicated. First of all, we must analyze this extreme situation. If the driver can not control the brake (brake pedal failure, novice no brake awareness, the driver is asleep, etc.), by pulling the handbrake button, the vehicle will brake, pay attention: At this time The brakes of the vehicle are not mechanical parking brakes. At high speeds, the emergency brake uses the ESP control unit to hydraulically brake all four wheels with a force that is slightly less than full braking, and can be used directly when the vehicle is at a standstill. Electronic hand brake to slow down or park. For example, the speed of the Volkswagen's electronic handbrake is above 7km/h, and it is only when the speed is below 7km/h that the parking brake is applied directly. Even if the vehicle is accidentally turned off (the circuit is still on), this function is still valid, of course, the brake lines and circuits can not be destroyed. According to this situation, we can also draw a conclusion: If you want to use a handbrake to play with children's tricks, the electronic handbrake can't make a flick. Although some models do not have an automatic parking function, they have the function of ramp assist (HAC, HHC, etc., which are differently named by each manufacturer). After releasing the brakes, they will continue to maintain the brake for 2 seconds, allowing the user to comfortably face the situation from releasing the brakes to starting. Move forward during this neutral period. In fact, this function and the AUTO HOLD function are basically the same in the braking principle and logic control. For vehicles with an automatic transmission and an electronic handbrake, when parking on a sloped ground, it is necessary to first hold the handbrake to fix the car, and then hang the transmission into the P block to reduce the burden on the transmission. Preventing the P block from catching the latches prevents normal unlocking. In addition, even if it looks like a flat road, it will inevitably have some small gradients that are difficult to detect. In addition, when the automatic transmission model hangs the D gear, the gearbox will also “stuck†the car. At this time, the brake is not released after the brake is released. P block, then the P block's trivial latch will be stronger, and over time will cause unnecessary wear. to sum up: The handbrake is a system with a high usage rate. The proper and correct use can make the future use more smooth. Especially for the mechanical handbrake with the largest amount of holding, it is better to use according to the correct method. Do not stop the car yet. Handbrake pull up, this practice is indeed unnecessary. Save the use of points, to ensure its good use of results, is very important for safety, but also can extend its adjustment cycle to reduce the cost of repair and replacement.
Carbon black is formed by the accumulation of spherical or chain particles with an average diameter of 5~30nm, and the internal microcrystalline structure with a diameter of 3~500nm, which can react with various free radicals.The proportion of carbon black is 1.8~1.9, the proportion of granular carbon black is 0.35~0.4, and the proportion of powdered carbon black is 0.04~0.08.
Carbon black can increase the tensile strength, hardness, tear resistance, wear resistance and other properties of rubber products, it is mainly used as a rubber reinforcing agent, especially for tires.Carbon black's color is extremely black, covering strength is very strong, also is the ideal black pigment.Used to manufacture tires, rubber tubes, conveyor belts and other rubber products as well as ink, dye, paint and other products.
Carbon Black is mainly applied to various rubber products such as tires,rubber overshoes,cable,seal ring,tape etc.Moreover they can be applied to such relevant industries as plastic manufacture.
Carbon Black,Carbon Black Pigment,Carbon Black Powder,Pigment Carbon Black Yucheng Jinhe Industrial Co.,Ltd , https://www.hncarbonblack.com
Foot parking system
Automatic car first pull hand brake and then hang P block