Automotive World Site

In driving, there is the term “understeer” and “oversteer”. Maybe you have or have often heard these two words. Just like what the symptoms of a vehicle, perhaps you have not experienced it. Or if ever, perhaps because you do not feel it does not know which one over, which is under.

Well, to understand it, can see the explanation below. Also, how to cope when experiencing.

Understeer
Symptoms tend to car straight, although the steering has been deflected. Commonly known as skid traction because the front is missing. If this was a panic-drivers-especially large potential for harm because the car out of the road.

How to cope :

1. Immediately slowed until traction vehicle back.

2. Do not add spin the wheel, or brakes.

3. Cut down on the accelerator gradually.

4. Reduce the steering wheel rotation.

Oversteer
The opposite of understeer, the rear tires lose grip. Consequently, the stern of the car to shift or twist.

The cause, most commonly we do braking when turning. At that time, the weight moves forward so that makes the rear tires less grip on power. Another factor for turning the steering wheel abruptly.

The danger, the car can be out of control and collided with something from the side. Meanwhile, the sides are not protected as well as front or rear.

How to cope :

1. Do not brake.

2. Do not move the position of the hands on the steering wheel.

3. Make a counter-steering or “reply to” steering wheel with alacrity, but not excessive.

4. Cut down on the accelerator (for rear wheel drive car).

5. Add just enough pressure on the gas pedal (for the front wheels moving car).

6. Move your eyes to the point of going to the intended

7. Be prepared to return the wheel to its original position

For motorists who drive a car with a Multi Information Display (MID) device can easily monitor the use of fuel. Then, how about the MID figures show that wasteful fuel usage? Least wasteful fuel consumption also depends on driving style, technical factors other than mechanical course.

Here are some tips and tricks that need to be done to reduce fuel budget:

1. Do not stomping.
   Pedal must be stable and gradual. If you step on the gas pedal abruptly, auto fuel that will be sucked into the combustion chamber is also growing. Meanwhile, at that time was still low engine rpm. Consequently not all that fuel into the engine room fire. Which is called a waste. Because no fuel coming out in the form of energy, but go wasted through exhaust.
2. Discover the engine RPM.
   One way to make an efficient fuel consumption is to change gear (transmission) the right, which is when the engine reaches maximum torque (maximum moment).Gearshift when cars were in need of torque (thrust force), should be conducted with respect to information about the maximum moment (maximum torque) of each car (usually in units of kgm / rpm). Meanwhile, if the vehicle is moving (where the thrust is not needed), the most efficient when driving with the RPM between 2500 until 3500 and with the highest gear.

   For example, technical data on the manual written book Maximum torque: 200Nm/3750rpm. This means that the highest moment of 200Nm occurs at the time of rotating machines as much as 3750 per minute.

   In this example, means that we should make the shift gear when the figure shows the range of 3750 rpm. Figures can be viewed at RPM tachometer located on the dashboard of a car.

   Figures RPM on tachometer very important note. To streamline fuel consumption, while speeding down the road. Keep the engine speed at the maximum torque range. Because, that’s when fuel supply is in accordance with the output from the machine.

   One habit that is often overlooked driver is: do not immediately adjust the gears after lowering speed (deceleration). After running hard and then suddenly put the brakes suddenly, you should also pass the shift gear to a lower position.

3. Measure the HC and CO.
   Whether or not extravagant consumption of fuel is also determined by engine components. Machine components that have a lot of wear / damage can cause incomplete combustion processes.To detect it, check the exhaust emissions. If the examination results show the value of HC (hydrocarbon) and CO (carbon monoxide) is too high, this is a sign of combustion in combustion chamber is not perfect (lots of wasted fuel).
4. Expenses and Activator.
   Another factor that determines the fuel consumption is a load and drive (drive vehicles). Increasingly heavy burden to be transported, their consumption will also increase. The definition of driving include: couplings, bearings (wheel), coupling (propeller shaft), axles, and wheels.

   When these components worn or damaged, would cause loss of power generated by the engine to push the car running. Meanwhile, fuel consumption remains large. Related to the wheels, use of large tires and wheels, including the factors that affect fuel consumption.

Here, other tips are also noteworthy:

1. Habits out of the office lunch / evening, preferably reduced. Bring lunch / delivery seemed better.
2. If traveling, take the family / colleagues that one purpose / intention to go together in one car. For the same matters do not necessarily have to run two or three vehicles while with one unit will suffice.
3. Switch to public transport such as busways, railway, or metrominis.
4. When a traffic jam, while out of town, you should stop first. Changing other activities such as rest, eat, go to the bathroom, or fill the fuel to decompose congestion.
5. Drive gently. Reduce the frequency of braking. When facing a red light does not need to step on the gas, let the car slide because they must be stopped. Reduce the frequency stepping on the gas and brakes. This is the step energy disposal in vain.
6. When sliding or decreased, gear should not be positioned at neutral. Engine brake effect proved more economical fuel than stationary.
7. Turn on the AC as needed.
8. Ask workshop setting appropriate timing according to the type of fuel used. Ignition point too forward or backward resulting wasteful of fuel.
9. Clean the air filters (can be done by yourself) per 2500 km, or depending on conditions.
10. Do not heat the car for too long, maximum 2 minutes. Warming-up machine for 30 minutes, synonymous with traffic for 30 minutes as well.
11. Find the route / alternative road is not jammed, out a little with the current path is more save.

Leaky tire problem is very difficult, especially cars. As we was enjoying the journey, suddenly a flat tire due to hit a nail or similar sharp object. We need to replace a leaking tire with a spare tire, and brought to the workshop to patch it. What is ’suffering’ we end up? The answer is: Yes, because now ’suffering’ that continued into our tires!

What are carried out by a tire?  Tires that had been intact now pierced with a skewer tool for your little finger. Tires that had been leaked just the tip of the needle, made hollow like the mouth of the pipe. Wow, we dead been the fate of our car tires. It’s known, since that was patched tubeless tire type alias without tires.

Once punched, the rope corking into the hole fiber strain tire with enough potential to further damage the tire. Starting from the rubber material, woven yarn to woven wire made tear and break apart, so that we become increasingly weak tires. This is the form after the end of our tire patched pay 80-10 thousand silver.

For the first time that the patch might still be able to survive for several weeks or months. But if it is leaking again at the same spot, which certainly could not be corked with a rope’s fibers. Well, is forced to use the inner tube.

With little effort and rubber glue, you can avoid further damage and to extend the age of your tires. Pump up your tires full of air, and turn slowly while watering the surface with water. After the air bubbles visible sign of the hole, circle the leaking area with paint or the like as a marker.

Collapse tires and rinse the area around the hole, and then leaked it with a dry cloth wipe. After drying completely, drop hole with any brand of rubber glue, so that the glue seeps into the hole. Help infiltration into the tire with glue jabbing a pointed object such as a pin or small nail into the hole clean, dry and wait for several minutes.

The final step, pump up the tires filled with air and slowly pour water into the hole that has been patched, to ensure that the hole has patched well. Make filling process, from beginning to end with great care and caution, so you do not need to repeat it if there is a failure.

Some advantages of this model such fillings are:

1. Strong and anti-failure. Power glue adhesive or rubber adhesive power is higher than the cohesive power of the rubber itself. So this point becomes more powerful than the others. No part may fall off or bounce, as they only use glue. Moreover, the patched section is a very small hole.
2. Does not weaken the tires a bit for the network.
3. Not add any mass balancing aka affect balance.
4. There will never tire in need throughout the life of the tire. Using tires in increasing costs, complicating the wheel settings, the reliability is lower and the risk of failure is much higher.
5. Does not depend on others and tire workers as well as the tools that can be more complicated physical damage tires.
6. The condition of the tires remained intact, as if it never had a leaky tire. No damage gum tissue, yarn and tire cord.

So, wants to prove? No harm in trying, right?

How much of our attention on the vehicle that we use every day? Often we ignore regular maintenance on our cars so that its condition remains excellent. Maybe this is trivial, but if not carried out could cause a bigger problem and requires expensive repair costs.

Car components have an age or lifetime and it can be extended with an easy and inexpensive maintenance. Here are the steps that can be done to prevent damage before their time.

1. Before you turn off the engine, reduce the volume and turn off the vehicle’s audio system. With the machine shut off the audio before, at least the audio system does not store electricity. If the remains are still stored electrical current, voltage spikes occur is feared that resulted in an audio system become damaged.
2. Straighten your car tires when parking before the machine off. In quiet conditions and wheel deflected, then the engine rpm will go up if the car back is turned. Because, power steering designed to work in a state is not straight. When the steering wheel straight, the engine will reach the round of stationary and power steering are not working fully. Thus, power steering components including the oil will remain durable.
3. Turn off air conditioner before the engine is turned off first. This allows bearings or wheel bearings and some components of the AC compressor will live long. Therefore, these components do not stop abruptly when its round was high.
4. For turbo-engined car, leave the engine to shut down for a moment before. When stationary engines, bearings or bearing lubrication flow turbo in a stable condition. So that conditions would be more durable bearings considering the performance is strongly influenced bearing turbo.
5. Check tire pressure frequently. Lack of wind pressure can make the surface uneven tire wear. To be more perfect, you should do periodically tire rotation every 10,000 km or six months.
6. Prevent windshield when the car parked in the blistering. You can use cardboard, newspaper, or cloth to cover the windshield so that ultraviolet rays from the sun does not enter into the cabin. UV rays can fade fabrics made of foam seat cushions and become brittle.
7. Avoid high-speed hit the hole. If it is too often forced, the age of suspension and tires will be broken.
8. Do not let the engine speed is too high. When you transmit your car manual, gear position to immediately move the lower positions. In addition to keeping the engine does not overheat and remain durable, as well as fuel consumption becomes more economical.
9. Perform routine inspections according to the official repair shop service manual. Make sure the condition of air filters, radiators, spark plugs, battery until the water in perfect condition.
10. Always use engine oil derived from synthetic raw materials that are specifically formulated with high quality additives, so it can provide better benefits than mineral lubricating oil. The oil was shown to increase resistance to heat engines, reducing the friction between the engine and stabilize the rate of oxidation.
    For diesel-engined car, use oils that contain high-tech additives capable of controlling the oxidation and control of soot  well, thus providing effective protection against piston deposit formation as a result of high temperature, wear and tear, corrosion and foaming. Thus, your machine will be maintained in a durable.

“Paradigm has changed. The smaller the engine capacity, “said Fred Becker, Director of Sales Engineering Concepts NREC, a company turbocharger producers from the United States, at SAE World Congress in Detroit last week.

However, the performance is not sacrificed. “In fact, the more intense, more efficient, and exhaust gas emissions are also so low. The car was driven by steady on a variety of conditions, “he added.

Actually, the trend has been underway since last few years. For example Volkswagen, which developed TSI engine. Although the 1.4-liter engine capacity, ability to match the 2.0-liter engine. VW engines have been used on products sold in Indonesia, the Touran MPV.

Gasoline engine-now-especially great because the more applications are combined with direct injection technology petrol or gasoline direct injection (GDI or DI) and the turbocharger. Especially for the turbo, this system does not only work on medium and high speed, but starting from the start. Turbochargers also no longer owned a large capacity machine, but also a small engine, below 1.5 liters.

Noise
In addition to boosting performance machines that are more efficient, development by turbocharger manufacturers is to reduce the noise caused by this device. For that, the engineer who specializes in automotive turbochargers special-application re-analyzing and designing turbo subcomponents, such as shape, angle, and the size of the fan leaf (blade-blade). Result, the ability of the turbocharger is now more intense.

In addition, because many companies are interested in automotive component suppliers producing turbochargers, new ideas emerged. For example, designing a turbocharger with a miniature model of water cleanup pumps in nuclear reactors.

There also are making impellers (blade-blade) as a hydroelectric turbine (power plant) is safe through the fish. Some are made to replace the axial fan tail rotor helicopter model. In fact, the NREC has managed to create a highly efficient turbocharger, capable of reducing NOx, and worked in the radial.

Recovering energy
“No less attractive because of design and engineering knowledge continue to grow. Turbochargers are designed specifically for current generation gasoline and diesel engines, “said Becker. Therefore, the upcoming turbocharger designed for smaller engine capacity and number of cylinders a little, for example, four, three, or even two cylinders. “In fact, had anyone have an idea to unite the turbo unit with EGR (exhaust gas recirculation),” Becker beber.

During this time, the development of automotive turbochargers on slow assessed. The reason is, the added value obtained from the turbocharger a bit.

“In order to obtain greater value added, research is now focused on the turbo impeller aerodynamics,” he said. He added, later not only to boost turbocharger (boost) power of the engine, but also to restore or recover energy.