- Written by Aitor
The transmission system or automatic transmission is in charge of changing the gear ratio without user intervention when the vehicle is moving. In this way, the driver need not make the change gear manually. In such automatic transmissions, the gear ratios are obtained by epicyclic gears or planetary while in the manuals are performed with the called parallel gears.
How do automatic gearboxes arise?
The first automatic gearboxes arise in 1940, and its goal was twofold: to increase the number of users who could drive, and expand the market for manufacturers. In fact, it was not automatic transmissions 100%, but changed autonomously when the vehicle was already moving. In addition, they are working with a simple hydraulic oil and not with ATF, which did not develop until years later.
Today, the automatic gearbox predominant is hydraulically operated by a fluid coupling or a torque converter and a set of planetary providing the required multiplication. One of the most important components of the automatic transmission is the oil pump which supplies lubricating fluid flow to all components and gears.
How an automatic change work?
The differences from a manual are pretty obvious. While in the manual, the driver must depress the clutch and move the lever on the automatic transmission This operation is performed by the vehicle by a control unit that detects pressure of the gas pedal or brake, and acts automatically to select and the proper gear.
What elements make up an automatic gearbox?
You make it clear to your operation, you must know what is formed parts:
- Torque converter.
- Planetary gear set.
- Bands of friction material for pressing planetary part of the game.
- Game clutches.
- Hydraulic system.
- Oil pump which pressurizes, lubricates and cools.
Types of automatic boxes
You should also know that there is only one typology in this case, so we would like to summarize:
- Torque converter: Mounted in the first automatic transmissions, it is formed by a round housing that comprises two turbines, one connected to the engine and one to the gearbox. When the motor rotates, oil is driven projecting into the turbine. The higher the speed more oil will force that will cause the turbine to rotate the vehicle and start driving. Today it is one of the most reliable in terms of quality and price boxes, and is used in high-powered vehicles.
- Piloted manual gear box: It is a mix between a manual gearbox and an automatic, and is called CMP. It incorporates an internal clutch that automatically triggers the fly. Even with no clutch pedal, should lift the accelerator pedal to the change occur to avoid abrupt change of gear. As a result we get a very similar to the manual transmission but without pressing or change gear response.
- Gearbox continuously variable: It is similar to the torque converter system, but incorporating a development system consisting of two pulleys connected by a chain that transmits engine power to the wheels of the box. Transmissions differ in the diameter on which the chain moves. Its main advantage is that hardly produces retention, so once launched does almost lack accelerate to maintain speed, resulting in a low fuel consumption.
- Direct-shift gearbox: It consists of two automatic gearboxes in one. The first is responsible for the odd gears and the second of the pair, thus changes occur in a matter of milliseconds, much faster than it could change a driver manually. When engaging a gear box, the other is ready to enter the next, so that more smoothly driving and improved consumption is achieved.
Maintenance of automatic gearboxes
It is a fundamental for the proper operation of the vehicle occurring element, it needs maintenance, which involves replacing transmission oil (ATEF) and filter. This must be done with a special machine that makes a complete transfusion fluid for the new ATF into the box changes completely clean and must be entrusted only to professionals.
In Spain, the automatic still not imposed as preferred by drivers. The last report made by Ford Motor Company tells us that the 83% of European drivers prefer a manual change, and in Spain this figure rises to 95%. Therefore, if we have one, we must go to specialists in the sector to ensure correct repair and / or maintenance of the gearbox.
- Written by Aitor
When the Artcurial auction house announced the sale of Ferrari 335 1957 S of the living Rétromobile held in Paris last January 5, enthusiasts and collectors automotive world expected to see new sales record in the history of classic car auction . Its initial price was set at 25 million euros and slowly rose to the final whopping 32 million, eventually taking second place in the list of most expensive cars in the history behind the Ferrari GTO 250, which reached a price round 34 2014 million. He appraised value of cars The vintage of the Italian brand increases annually exorbitant percentages and make Ferrari the number one in revalued classic vehicles.
Despite the outrageous price that reached this gem of automotive history, the owner may not enjoy the road to 300km / h offered its engine, as it was specifically designed for competition. There are only four Ferraris of this model in the world and specifically this 335S that could be seen in Paris, he took over 40 years in the hands of a French private collector.
The 335S Ferrari model was involved in the accident that occurred at the iconic Italian Thousand Miles (Mille Miglia) and provoke the total cancellation of the race from next year. A hands of Alfonso de Portago, substituting at the last minute for a sick Luigi Musso, the 335S debut in the World Endurance Championship in the third round of this high-profile automotive test. The car, at the hands of Spanish rider placed third in the race when the tragedy occurred between Cerlongo and Guidizzolo. The explosion of one of the tires cost him his life 335S both Portago as co-driver, in addition to 14 fans enjoyed the race mediations. Multiple protests originated after named "Guidizzolo tragedy" made 1957 the last year of holding the Mille Miglia in Italy.
- Written by Aitor
Indian multinational has decided to seek help from their followers on social networks to rename the 'Zica' model, presented a few days ago at the Auto Expo show in New Delhi. The name stands for "Zippy Car" (energetic or happy car), looks too much like the virus that scares these days the world's population. For this reason, Tata has launched a contest on Twitter with the hashtag #FantasticoNameHunt and also on Facebook and WhatsApp to find a new name for your vehicle. The award? A car of this model or the equivalent of its value, in the event that the winner does not reside in India.
The 'Zica' claims to be the jewel of Tata Motors and it seems that sell this car with the same name of a virus that has caused WHO to declare a health emergency is not very appropriate. At least this is what the company has said to Bloomberg: "Tata is a socially responsible company and, out of empathy for the countries that are suffering from the recent outbreak of the Zika virus, has decided to rename this model." According to the multinational, in the coming weeks will be announced which is the winning name so that the vehicle can be released to the market already with its new name.
Zika virus is transmitted by the mosquito Aedes aegypti, also responsible for other diseases like chikungunya or dengue. 24 countries in the Americas are affected by this virus that was first discovered in Uganda in 1947. Most of those infected do not show any symptoms but in pregnant women, there is a great risk that the baby will be born with microcephalyAlthough it is still unknown what is the mechanism by which the virus causes this disorder zika.
- Written by Aitor
It is well known that proper use of the accelerator pedal can help reduce the consumption of our vehicle but the German manufacturer Bosch wants to go one step further by helping actively.
As we all know excessive and unnecessary acceleration increases the consumption of our vehicle but how to know when we are going through the accelerator ?, from Bosch we make it easy thanks to the active accelerator created by Bosch. This accelerator will warn us by means of a slight vibration when the system detects that we are accelerating more than necessary, in this way we will be able to keep the consumption of our car at bay and therefore the pollutant emissions of the same.
But the advantages of this asset accelerator does not stop there. The system can be connected with many other safety features of the car, so you can warn other situations that may pose a risk. One of these may be the proximity of a sharp turn, which detects through the navigation system, lane departure or is accelerating too and no risk of collision with the vehicle ahead.
It can also be a very useful element in hybrid cars as, in addition to the functions already mentioned, allows the driver to know when the combustion engine is going to start, warning him to reduce the acceleration so that it does not occur a sudden acceleration. The different types of signals that the accelerator emits allow the driver to know what type of warning he is referring to so that he can travel much more safely.
Volkswagen fraud after a new chapter on the problem with vehicle emissions opens. This time the problem comes to the Gallic manufacturer Renault.
While far from fraud committed by Volkswagen with vehicle emissions, the automotive sector suffers another setback when he was forced to call Renault revision 15.000 vehicles after detecting high levels of such emissions.
French Minister of Ecology, Segolene Royal said Thursday that the manufacturer Renault is committed to contact the owners of the cars to verify and adjust the engines, after finding high levels of these emissions.
Apparently in this case it is just a problem with the filtration system that need to be redesigned to function properly when it is hot or when the temperature is below 17 degrees.
Such adjustment shall be made in just half a day and shall not affect the vehicle's performance which was completely unmarked in the case of Volkswagen since in this case has not committed any fraud, it's just a glitch as they have already sometimes happened to virtually all brands.
These measures are a reaction to last week's revelations about two Renault models - the Captur and the Espace - that have undergone specific technical tests, organized at the request of the French Government, with the aim of verifying the level of polluting emissions.
The minister is his remarks noted that apart from Renault, "there are other brands that exceed the standards" emissions that have to be met to approve their cars, but would not name names. This suggests that it is likely that other manufacturers end up performing actions similar to those of Renault which were found high levels of polluting emissions in their vehicles.