Change the road lumen. How to change ground clearance

Change clearance button

It is not about the pneumatic suspension, but about traditional coilovers, where hydraulics allows you to raise or lower the lower sprout support. The goal is to increase the clearance (45 mm), so as not to hook the border the front skel and not damage the road body kit. The company KW last year made the HLS system available for owners of expensive cars like Porsche 911. Now it can be put on any car with coilovers (the cheapest option implies the installation of a clien change system and replace the springs while maintaining standard shock absorbers). Tuning atelier did not remain aside - for example, Cargraphic under the brand name Airlift betrays a similar system compatible with Bilstein racks.


Optics with LEDs

"Angel Eyes", which were the hit of the tuning market throughout the good ten years, gradually lose the status of a cult device. Now everyone dries through the block pharmaces with LED daylight lamps, the fashion for which the Audi introduced in its latest models. Among the tuners, such an optics has already received the nickname of Devil Eyes, that is, the "devil's eyes". The list of models for which such a solution is available is expanding weekly.


Discs with "Swastika"

Last year, the Dotz brand Dotz discussed last year was damn successful and was immediately copied by competitors. This year, at the exhibition stands, it was possible to count about ten models with a similar design, which is used even by the famous Atelier - for example, the company SRLSSON in model 1/5 Revo. Our attention has been paid to the concepts (i.e., not yet launched in the production) of the little-known GMP ITALY brand, whose designers tried to creatively rethink the swastika, and not just moved the liker like on their own blank.


The design of the car is always contradictory. The engineer is forced to choose between the most different factors, sometimes directly opposite. So, for good patency, a large clearance is needed, and the aerodynamics (and, it means the maximum speed and consumption of fuel) it only harms. For comfort, a soft suspension is good, but with it not to achieve withdrawal controllability. And so on. Therefore, it does not stop attempts to connect the mutually exclusive properties of the car together.
One of these attempts poured into the creation of an adjustable suspension. Its essence lies in the ability to change directly on the move the road clearance of the car, thereby radically changing its properties.
Big ground clearance (and, as a result, a high center of gravity) incompatible good course stability, so it is impossible to quickly undergo turns on the SUV. Conversely: Small clearance, short-step suspension and hard setting put a fat cross on the use of a car on off-road.
This is a contradiction just and is intended to solve adjustable road clearance. The car with such an option is able to change the center of gravity and aerodynamics directly on the go (it is known that it is quite highly dependent on the car height). In addition, its off-road properties can also be changed by simply pressing the button, or even without the driver's participation, automatically. The ability to arbitrarily change the ground clearance gives a side effect - the car with such a device can support the road clearance permanent regardless of the level and character of its loading (that is, the distribution of cargo by car), which has a positive effect not only on the resistance of the car, but also on the distribution Luminous headlights.

Algorithm regulation

For safety reasons, the traffic control system must necessarily have automatic modes that could prevent dangerous maneuvering (both highway movement at high speed on the "raised car" and the movement along the broken roads or rough terrain on the "lowered car"). And such systems are really installed. So, when it reaches some speed (usually, 35 km / h) the car's ground clearance automatically switches from the highest position to the stage below (of course, if the road clearance was set to any other position, except the highest, switching does not occur). At a speed of 80 km / h and above the car, automatically transition to the "normal level" of the clearance. If the car moves faster than 120 km / h, the ground clearance automatically decreases to a low level. So it is possible to reduce aerodynamic resistance, improve control by lowering the center of gravity and reduce fuel consumption.
High levels of travel lumets, on the contrary, usually do not have automation and are turned on forcibly, the button.

Composition of the system

The rise and lowering of the car is made using pneumatic elastic elements. When the air is submitted under pressure, they change their volume and lift the car. Blowing air, you can lower the car.
A receiver is often present in the system, which allows you to start lifting the car body directly after starting the engine, without waiting until the pressure rises in the system, and also reduces the noise from the compressor.
For the full and proper operation of the system, in its composition should be road Sensors. The sensor is attached to the body and through a special lever is connected to the lower lever of the suspension. Any vertical movement of the body relative to the wheel (and, that means suspension), it causes a movement of the sensor lever that is converted into a rotational movement. The rotational motion is recorded by an inductive sensor that generates an electrical signal, the proportional angle of rotation of the lever. Using sensor readings, the system tracks the position of the vehicle and eliminates possible skews in the operation of pneumatics, that is, controls the uniformity of the rise and lowering the body, as well as its position relative to the soil or roadbed plane. Sensors of the lumen helps the system to eliminate car skew (for example, due to different air supply to the left and right).
Cars with variable road lumen are also equipped with automatic dynamic headlight proofreader. Since road lumen sensors are available as part of the system, their readings can be used to automatically maintain the beam of headlights at the constant level. In order to eliminate too frequent operation of the corrector when driving through Ughabam, the system responds to changes in sensor readings without mechanically repeating the terrain, it analyzes these readings and triggers with large delay, calculating some average body position relative to the surface.

One of the main parameters of any car along with the length, the length of the wheelbase and the width is ground clearance, which is also called clearance. What it is?

Clearance is the distance between the road surface and the lowest point of the car. This indicator affects the car's permeability than the clearance more, the more uneven roads your car will be able to drive without damage to the engine and bumper crankcase.

How to change clearance?

The desire to change the size of the road lumen occurs in the following cases:

  • to increase the patency, if you are constantly driving in dirt roads, the clearance increases;
  • to improve resistance on the highway, the clearance, on the contrary, decrease.

It is worth noting that the deviation from the passport data of the car affects manageability, speedometer testimony and sensors.

The easiest way is the installation of low or high-profile rubber. However, simply change the rubber is not enough, it will also be necessary to maintain and expand wheel arches, and in some cases and fully change the gearbox to reduce / increase the gear ratio.

Climate can also be enlarged by installing spacers. They are installed between the supporting parts of the racks and the body. Another way is the installation of rubber compactions-spacers between the turns of the depreciation springs. It is clear that the comfort of ride will decrease - the suspension will become more rigid and you will literally feel every pit.

Each specific case is required to calculate in different ways. To solve your specific task, you need to come to us by car and consider the options that you will fit.

The car is designed to carry out movement on the road. But recently it is necessary to do it on off-road, and sometimes it is difficult to determine where one thing ends and the other begins. Therefore, such a car characteristic as clearance, and is an increased interest among car owners. This article provides dimensions in the comparative table of clearance of cars, but before, of course, it should be understood what it is and what functions performs.

The clearance is explained by GOST as the distance between such parts of the car as a support surface and the lowest point of the central part of the entire design. Simply put, this is the distance that shares the perspective to damage the lowest part of the car and the road surface. More often this concept can be heard in such a form as a ground clearance - it is more understandable, it is easier to remember and is used with great pleasure.

The magnitude of the clearance is a very important characteristic for any car, as it significantly affects resistance at high speed, permeability, maneuverability. And this, no doubt, those indicators that can demonstrate the car in the best light. As for the passability, it can be enhanced with an increase in value. By the way, you can do it right while driving - on some cars.

As a rule, the ground clearance is indicated in millimeters, sometimes also in centimeters. The practice of alerts of car owners about two values \u200b\u200bis also common - clearance under the front and rear axis. Sometimes even indicate the clearance that under the cartridge engine.

So that it was easier to characterize clearance, in the future and using the table, the conditional classification of this characteristic should be given. In general, the road clearance can be divided into three categories: large (SUVs and sortsports), medium (crossovers and parcktails), small (cars of a passenger type). And now it concerns the specific values \u200b\u200bof the road lumen under the front bumper:

  1. 20-35 cm for SUVs.
  2. At least 18 cm and no more than 25 cm for parquets.
  3. 14-20 cm for "car".

As for the crankcase pallet, these are values:

  • From 20 cm for SUVs;
  • From 17 to 21 cm for parcktails;
  • From 12 to 17 cm for passenger cars.

Comparative Clearance Table Auto

A comparative analysis of the road lumen of various cars allows you to conclude all these values \u200b\u200bin the table, which is shown in this material. The table will show the lowest and high significance of the clearance of all three groups of cars previously.

The list of SUVs characterized by the highest value, no doubt, should be included: Land Rover Defender (25 cm - under the front bumper, 43 cm - under fuel tanks), UAZ HUNTER (20.5 / 40 cm), Nissan Patrol Y62 ( 28.5 / 30.5 cm), Mercedes-Benz GL500 (28.5 / 29.7 cm), Volkswagen Touareg (26.5 / 30 cm).

As for parquets and crossovers, the table can be explained here for two criteria: cars with road lumen less than 18 cm and more of the same value.

The first groups include such models: Infiniti EX (14.7 cm), Honda CR-V and Nissan Juke (17 cm), KIA Sportage (17.2 cm), Lifan X60 (17.9 cm), Skoda Yeti and SsangYong Actyon (18 cm).

Second group: Hyundai Santa Fe and Kia Sorento (18.5 cm), Chery Tiggo and Suzuki SX4 (19 cm), Mitsubishi ASX (19.5 cm), Toyota RAV4 (19,7 cm), Suzuki Grand Vitara, Volkswagen Tiguan and Nissan Qashqai (20 cm), Renault Koleos (20.6 cm), Mazda CX-5, Nissan X-Trail and Renault Duster (21 cm), Range Rover Evoque (21.2 cm), Subaru Forester and Mitsubishi Outlander ( 21.5 cm), Subaru XV and Land Rover Freelander (22 cm).

The group of average passenger cars, the indicator of which is 14-20 cm, includes the following: Chevrolet Cruze and Daewoo Matiz (15 cm), Kia Spectra (15.5 cm), Lada Kalina (15.8 cm), Chevrolet Lanos and Hyundai Solaris (16 cm), GAZ-24 Volga (17.4 cm), HYUNDAI IX35 (17.5 cm), VAZ-2110 (18 cm), Renault Sandero Stepway (19.5 cm).

In a separate category of "Lightweight", whose clearance exceeds 20 cm, fall: Renault Duster and SsangYong Kyron (21 cm), Ford Explorer (21.1 cm), Toyota Land Cruiser 200 (22.5 cm), and all records beats UAZ -469 with a value of 30 cm.

Speaking of the highest values \u200b\u200bof the road lumen, it should be noted such a serial vehicle as a disappearance tractor. They have clearance can reach 50-70 cm, and in special even 200 cm.

This comparative analysis showed that the clearance is an individual indicator of each car. Despite the fact that, depending on the purpose of the car, its dimensions and other features, the ground clearance can be combined into three groups, yet this distribution is conditional. First of all, due to the fact that, depending on the clearance models, for example, the passenger cars can achieve significance even higher than that of crossovers. Therefore, motorists before buying an next car new product, it is recommended to check the clearance values \u200b\u200b- this is in their own interests.

Video "Increase the clien front suspension"

The record shows how repair work is undergoing to raise the front suspension Renault Duster (20 mm).

In many cities, slowly coming into disrepair are repaired extremely rarely, and where the car passed yesterday, today it starts to touch the bottom of irregularities, as a result of which the owner thinks how to increase clearance. But despite the fact that everyone would like to solve the task of all the costs of strength and financial resources, not every method is safe for the vehicle itself. Let's consider several methods used.

How to increase ground clearance in front of the bottom of the car

None of the vehicle, except, except, the carts, there is no absolutely smooth bottom, there is always a protruding part, the distance from which to the road canvase is called the clearance, according to GOST. But where is the lowest point? In the area of \u200b\u200bdiscovering details of the motor compartment? Among and shock absorbers? Or maybe this is an exhaust system? In fact, for a stone or earth elevation, you can catch any node under the car and it is difficult to come up with the best way out, except to increase clearance.

The most close to the obstacle's obstacle that arose on the way is part of the car is the front bumper. Despite the fact that this item is somewhat higher than many others, it may be injured in the first place. In passenger cars, the road clearance to the bumper ranges from 14 to 20 centimeters, for parquets, this gap corresponds to 18-25 centimeters, and for full-fledged SUVs - 20-35 centimeters. It is possible to increase the clearance in this place by removing the so-called "skirt" that protects the bumper, however, it will be increased its vulnerability. However, instead of a protruding safety lining, parking sensors are often used.

What is better - cars with changeable clearance or enlarged?

To overcome the obstacle, forcing the car in the literal sense to pass "on tiptoe", even if the fair reduction of speed is not a dream of each driver? However, vehicles that have nodes to increase clearance at will - somewhat more expensive than models that are not equipped with such a function. And only a few can afford cars with changeable clearance. But as convenient: the speed of up to 20 kilometers per hour is reduced, the toggle switch is pressed, the hydraulic in a special pillow between the body and the shock absorber is pumped up, and the lumen increases. With raising speed, the car itself sends to the previous position.

But what about those who do not have a similar system? You can lift and artificially, however, it is not always safe. In particular, in the springs of the suspensions you can install intercity consoles, as a result of which, under the weight of the body, the elastic elements will slightly shrink, but be prepared for increasing the rigidity of the movement. Installation of more powerful springs reduces the stroke of the shock absorbers onto the post, and at the same time it displays these nodes. Between the body and support rack, motorists sometimes establish aluminum consoles, but here there are disadvantages - such elements provoke the corrosion of the salt mixture, which is treated with the searel roads. The optimal option is the installation of rubber consoles instead of aluminum.


Is it necessary to increase the car clearance?

The greatest risk area - Carter Pallet. It is here that the lowest point is usually located. At the same time, damage to the pallet always has the most unpleasant consequences for the motorist. The lumen of passenger cars in this place is 12-17 centimeters, parquetnikov - within 17-21 centimeters, and SUVs - 20 centimeters abroad. However, to increase the clearance of the car due to the removal of protection, although it is not difficult, but quite dangerous, on the contrary, it is better to sacrifice one or two centimeters by installing an additional shield from carbon fiber or fine metal.

The clearance can and decrease, since the springs are used to seize with time, and replacing them, you can get old clearance.

Another plot that is often experienced by the durability of various irregularities of the supplied area is the exhaust system. As it passes under the bottom, it is constantly attached to shocks, and the further the system from the surface of the landscape, the better. The rear suspension is also vulnerable, the cardan shaft of the all-wheel drive vehicle can be easily damaged. Unfortunately, it is impossible to close all these nodes, however, after examining their location, during the control of the car, it is not difficult to avoid breakdowns on an uneven road, skipping hills under safe bottoms of the bottom.