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Auto electrics

Auto electrician repair at Hammerhead Auto Specialists

An auto electrics is an integral part of any car. With the development of the automotive industry, the car electrics also developed in parallel. Improved in electrical, and later electronic circuits, facilitated engine start in various operating conditions, added new electronic equipment that facilitated vehicle control and increased ride comfort. The main function, for which the auto electrician was created, remains the initial start of the engine and support for its further uninterrupted operation. Auto electrics of the car, if we consider a simple schematic diagram, consists of main, auxiliary elements and measuring elements (control sensors, warning and control devices). The main element of auto electrics can be attributed to power sources, this is a battery, generator, electric starter, spark plugs, ignition coils, electronic control units, switches, electrical wiring and general electrical circuit.

Causes of malfunctions in the electrical equipment of the car

The main enemies of a car’s electrical equipment are water and overheating. They damage the insulation and the result is a short circuit. Electronics often fail due to loss of contact at the battery terminals, ground, wire interruption.

Electrical equipment accounts for a quarter of the cost of a car. The repair should be carried out only by an experienced auto electrician who can use all the necessary tools and diagnostic equipment in order to avoid the failure of the control units.

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We repair or replace:

  • electrical wiring;
  • battery;
  • starter and generator;
  • electric power steering;
  • ABS, ASR, SRS and other electronic security systems;
  • ECU;
  • cooling, heating, ventilation, seat cooling;
  • hatches and folding roofs;
  • plugs, nozzles, ignition coils
  • tire pressure sensors
  • control panels
  • multimedia
  • lighting devices
  • preventers

Security systems without which no modern car can do:

ABS (Anti-Block System)

The first developments of ABS date back to the thirties of the last century, but the serial equipment of machines began only in the mid-seventies.

The idea of ABS work is simple enough. The computer analyzes the signals from the wheel rotation sensors and activates the brakes, simulating the actions of an experienced driver during intermittent braking, preventing the wheels from locking.

Its most useful qualities are shortening the braking distance and maintaining control over the car during emergency braking. The disadvantage is that it is difficult to calculate the stopping distance. The argument, what to say, is weighty. However, it is better to stop in ignorance a few meters before the obstacle, than to bump into it with precisely calculated stopping distance. We agreed that the system will be useful for a beginner, but an experienced driver can “outplay” ABS. But the development of electronics led to the fact that in the battle “experienced driver – anti-lock braking system”, the latter won a convincing victory.

Modern multichannel ABS clearly won even experienced professional. It was even possible to get rid of such an unpleasant thing as vibration of the brake pedal when the system is operating. There have been cases when an accident occurred due to its too abrupt actuation. When the brake pedal began to vibrate, and the car made strange sounds, inexperienced drivers got scared and released the pedal. Therefore, in the most modern brake systems, the driver almost does not feel ABS operation.

ASR (TRC (traction control system), STC, TRACS, ASC+T)

The first logical development of ABS was the ANTI-TRUCKING system. The principle of operation is simple: at the moment of starting the car, sensors (ABS) record the slippage of one of the driving wheels, and the computer brakes it using the brakes. If necessary, the same electronics can reduce engine speed. It means, if you “drown” the pedal to the floor, the computer will not let the drive wheels burn the rubber and grind asphalt or sand, but will accelerate the car as quickly as possible, without slipping.

The traction control system will not interfere with any machine, regardless of the type of drive. ASR for SUVs has become a real treasure. Instead of complex transmissions, they use four-wheel drive with free differentials, and the role of locks is assigned to the electronics. This scheme is not suitable for impassable off-road, but “SUVs” will be just right.

Of course, ASR also has its faults. For example, such a system will interfere with an experienced driver when trying to pull out a stuck car by releasing the gas. Moreover, it can strangle the engine and wheels so that the car will not be able to move at all. The ASR prevents active drivers from skidding, controlling its traction. On the other hand, the traction control system successfully fulfills the function of locking the differential, braking the wheel unloaded in the corner and thus equalizing the wheel speeds, and makes the most efficient use of the engine torque.

EBD (EBV)

Further development of ABS has led to the emergence of electronic brake force distribution on modern cars. These systems always work in pairs, so most often in catalogs you can see the abbreviation ABS + EBD.

The idea for EBD grew out of the fact that when braking hard on uneven surfaces, the car starts to turn. This is due to the fact that the degree of adhesion of the wheels to the road is different, and the braking force transmitted to the wheels is the same. The EBD system, using ABS sensors, analyzes the position of each wheel during braking and strictly individually doses the braking force on it. This takes into account the vehicle load and its position relative to the roadway.

The benefits of EBD are especially noticeable when braking in a corner. It is EBD that allows you to brake in such a situation without losing control of the car. Without this system, braking will end in drift at best.

ESP (VDC, VSC, DSTC, DSC, ATTS, VSA, Stabilitrac)

ESP today is the highest stage in the evolution of electronic active safety systems, combining the best solutions from the above.

The principle of ESP operation is based on the fact that to combat the drift and skid of the car not only by steering and “gas”, but also by braking one or more wheels. If the car is swept away by the front axle, the system brakes the rear wheel, which is internal to the corner, giving the car oversteer. When there is a danger of skidding, the outer front wheel is braked. When all four wheels are demolished, ESP calculates which one to brake and at what point. Together with braking, the system “dumps” the engine speed. Thus, using the ABS and ASR actuators, the system is able to brake each wheel individually.

But in order to do such a complex job, just ABS sensors are not enough for ESP. Therefore, the vehicle has additional sensors. One tells the system in which direction and at what speed the steering wheel rotates. Other two – about the angle of car rotation and the level of lateral acceleration. The readings of these sensors allow you to instantly calculate what is happening with the car and activate the actuators.

BSM (Blind Spot Monitor)

There are often many events happening in the blind spot, and if you ignore them, they can cause serious accidents. Unlike the driver, the blind spot monitoring system always sees everything that happens in the blind spot, which improves all-round visibility.

Blind spot monitoring works by means of radar sensors in the rear bumper of the car. They monitor the situation behind the car in an area of ​​about 20 m and are activated at speeds over 15 km/h.

As soon as the sensors detect another vehicle within range, the driver is alerted to the potential hazard by LED indicator in the corresponding outside rearview mirror.

If the driver has turned on the direction indicator on the appropriate side, the brightness of the LED indicator increases, alerting the driver about increasing danger.

ACS Automatic braking systems (Active City Stop) are called by experts as developments that help the driver to stop the car on the track obstacles. ACS reduces the risk of accidents by reducing the interval between pressing the pedal and stopping by 15%. There are no technical obstacles to stop the car without the driver’s participation. Modern indicators and sensors work quickly and accurately. The complexity of automation lies in the fact that the vehicle must be broken exactly at the moment when it is needed. In this case, the driver may delay making a decision. The automatic braking system is based on the principle of lidar (laser radar). The device sends pulses every 0.1 s, which scan the space in front of the car, identify obstacles on the way, determine the distance to the object and its speed. Usually the radar is mounted in the front bumper and the camera is mounted on the windshield. The task of the radar is to detect an object at a great distance in front of the car. The camera evaluates the danger posed by the obstacle, and the system decides to start braking or continue driving in the same mode. Today, the development of ACS works effectively at vehicle speeds within 15 … 30 km/h. But you should be vigilant and leave the braking solution entirely to the system.

The Park Assist system is a reliable assistant during parking. Its work is activated by pressing the button corresponding to the name of the “autopilot” on the panel. After starting, the assistant automatically searches for free (suitable area) space on carriageway side, which is indicated by turned on blinker. The search for a place is carried out by built-in on-board sensors (ultrasonic type). They calculate the area of ​​free space and measure it with the dimensions of the vehicle. If the search and calculations show that there is enough space, the car starts to park. The system also finds a safe trajectory to drive in, so as not to damage neighboring cars. What is the driver’s task? Apply the gas and brake in a timely manner.

Device

The mechanism of “ParkAssist” work consists of stages:

Activation – performed by the driver;

Finding a parking space and calculating its compliance with the dimensions of the car – performed by “ParkAssist”;

Parking – a joint work of electronics and the driver;

Switching off “ParkAssist” – performed by the driver.

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Certified Technicians & Quality Workmanship

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Proffesional Diagnostic Equipment

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High Quality Parts and Repairs

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Customer Care & Convenience

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Hammerhead auto systems has built one of the most comprehensive fleet management systems available today. At every stage of the fleet maintenance management process we have addressed the service, data and payment needs of the fleet manager and built controls that help offer real savings in both time and money.

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engine repair

Restoration and replacement of power unit components is the most technically complex and responsible process of everything that relates to car maintenance. It is almost impossible to do it yourself without special equipment. Therefore, in such a situation, people usually turn to a specialized center.

Partial as well as scheduled or major repairs are possible. The planned one is carried out after the exhaust of the resource of the power unit as a result of the run. Unscheduled due to other reasons - the wear of certain parts faster due to their more limited resource than the power plant as a whole. Maintenance is also necessary, aimed at maintaining the units in order to extend the service life or due to unexpected breakdowns associated with various causes of these phenomena (accidents, low-quality spare parts).

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21 April 2020

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21 April 2020

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