How Does Automatic Transmission Change Gears

As drivers, we know how the transmission works: we push the clutch in, change the gear and then continue driving normally. Manual transmission also teaches us how to perform clutch control without stalling or rolling on an incline. So how does an automatic car change gears?

There are more parts in this system that makes it a more complicated system. An automatic car has something called a torque converter. For the car to move forward, whether manual or automatic, torque is needed for the initial momentum.

The torque converter is a fluid link where its job is to connect the engine to the transmission and the transmission to the driven wheels (Front Wheel Drive or Rear Wheel Drive).

The engine is connected to the transmission in a bell housing. This is where the torque converter is. The transmission also contains something called planetary gear sets which provide different gear ratios.

The engine’s flex plate is also connected to this torque converter. So the torque converter basically takes the place of a clutch in an automatic car. When the crankshaft rotates it also rotates the converter. This is how the torque converter will disconnect and connect the engine’s power to the load being driven.

The torque converter has main components that make automatic transmission successful. These include:

  • The impeller – connected to the engine which is responsible for driving the turbine using viscous forces on the transmission fluid.
  • The turbine – connected to the transmission input shaft that sends the torque force to the transmission.
  • The stator – which sits between the impeller and the turbine. It lessens churning losses.
    The lock up clutch.

During the compression of the fluid it returns from the turbine that works against the impeller and its rotating movement that also acts on the engine.

The stator redirects the fluid so that the majority of the velocity gets driven towards the impeller which then adds to the torque produced by the motor. It can only rotate in one direction if the impeller and turbine are moving at the same speed. Stators do not apply torque when on a highway, only when coming to a stop or accelerating.

A planetary gear set consists of a sun gear and planet gears which rotate around the central sun gear, like our solar system. A planet carrier gear connects the planet gears with a ring gear that meshes them. The planetary gear set prevents certain components from moving when using clutches and brakes. This alters the input and the output of the system that changes the overall gear ratio.

Depending on which component is fixed it will determine the final gear ratio. If a ring gear is stationery or fixed, the ratio will be shorter than if the sun gear is fixed or stationery.

Classic Cars: Original, Restored, Restored and Modified

Not all owners of classic cars think in the same way. Some prefer to keep them original (patina and minor issues), some completely restore them and some restore them and also do modifications. All three require the love and attention to detail of a classic car collector. No matter his preference the commitment, effort and knowledge associated with this very involved hobby is admirable.

Original Vehicles

An original vehicle is one that has been maintained so well that it has all of its original factory specified parts. Their parts have been mostly fixed rather than replaced and if they had been replaced at one time it will have been with the original part intended for the model from the exact year of its introduction. To determine the originality of a classic, enthusiasts look for “matching numbers”, serial numbers that are stamped on parts throughout the car that match each other and the number originally associated with the car in its year.

Pros and Cons

Original vehicles are extremely hard to come by. To produce one takes the most time and money because the original parts are as rare as or more rare than the car itself. Because of the lack of availability of models and their parts, many car owner’s claiming “original” are actually restored. A true original and a restored vehicle should look the same and nearly operate the same, but because of the difference in original parts vs. re-manufactured parts, the prestige and value of a true original is significantly higher. The value of the three types of vehicles fluctuates based on the changing demand of collectors just like many consumables, but original vehicles, even in their shabbiest appearances can sell for 35% more than their perfectly restored opponent, a reason why you’ll find a lot of speculation on which route to take.

Restored Vehicles

Restored vehicles are made to look and drive like they did the day they were introduced to consumers. Their owners however, choose to replace parts with factory refurbished remakes of original parts. Using the original as inspiration, a car restorer will match the interior, parts and paint as closely to its glory days as possible.

Pros and Cons

Because restoration parts are easier to obtain and the restoration route creates more of its kind, this vehicle is less rare and often less valuable than an original. This is also the reason a collector can achieve results faster and perhaps joyride in his car sooner and for longer, a pro that’s hard to argue if you’re familiar with the work required of an original. As previously stated, the monetary value of a restored is less than an original in many cases, but there is value in having the most fun in your car and if that’s a high priority for an owner than this is a fine choice!

Resto-mod Vehicles

Resto-mod is short for restored and modified. These vehicles are the furthest from originals. They are restored and often “modernfied” if you will. Some owners choose to enhance the engine, make it more fuel efficient, or add modern luxuries like a preferred sound system or safety features.

Pros and Cons

The sky is the limit for an owner with the freedom of modifications. He can build his dream car! Resell for these cars is difficult though and the return could be even less than was put in it so this is the biggest pit fall. The reward is grand and the risk too, is grand, but for many this is the perfect fit for them. The value of a restored and modified vehicle is very unpredictable because the vehicle has been tailored to its owner’s specific tastes and he’d have to find a similar buyer, something to consider when choosing this method and while choosing each modification as well, if reselling is an area of importance at all.

The debate and judgment of this sector of cars will always be, keeping this art form alive and well, but one thing is certain; classic car owners love their cars and that’s worthy of respect. After considerable research you’ll find that each collector has to make their car collecting decisions based on his own lifestyle and what he plans to do with it, re-sell or enjoy. Judge a collector not by the category of his car, but how well it’s been done and cared for.

Jaguar Upgrades: To Boost Its Hidden Power And Stunning Appearance

The name of Jaguar doesn’t require any introduction to introduce itself in the world of the auto industry. The logo of Jaguar has been the reason of pride for the Great Britain from the years and interestingly, even today it successfully holds the flag of its success with full dominance. Driving the Jaguar is the dream of every car lover, but only few succeed in making their dream come true. The craze of car lovers towards Jaguar cars can be realized from the fact that those who are not able to buy the latest car by the maker are ready to pay any price for the classic models.

Now this might surprise to most of the people, that when these Jaguar enthusiasts are ready to pay any amount for the old version of Jaguar, why not they buy any of the latest models like XF, XJ or XK. Well, an answer to this question in simple words is a plethora of Jaguar upgrade options available in the market which offer them an advantage of enjoying the same power of these cars which they have been delivering during their first generation.

In the recent years trend of upgrading the mechanical features of both existing and newly purchased cars has flourished at jet dynamic speed across the world, facilitating the car and speed lover to enjoy hidden powers of their beloved car to a huge extent. And therefore upgrading the Jaguar cars is not an exception to it. The worth mentioning feature of upgrading the cars is that it makes the powerful cars more power with extra power that is derived by changing their computerized settings.

Now the question arises that what factors are looked after while upgrading any car? An answer to this question cannot be given in a single sentence and need to explain the process in points, that are summarized below:

Engine remapping and tuning: You will agree that an engine is the heart of every vehicle which facilitates smooth flow of fuel and air throughout the different components of the car. This function is similar to the human heart, which boosts blood throughout the body. As a little blockage in the veins in enough to block the flow of blood to the heart, similarly any problem in the functioning of an engine affects the whole performance of the vehicle. To get rid of this problem regular servicing doesn’t provide the acute solution and the problem can be solved only remapping and tuning the engine control unit of your vehicle.

The ECU is an on-the board device which can be re-mapped by erasing its existing settings with the help of required chip. The new settings are determined according to the requirements of the car owner. The engine remapping results not only in improvising the power and torque generation efficiencies of the vehicle but also its fuel efficiency.

Tuning the exhaust system: Being an expert car driver you must be aware about the working of an exhaust system. The main objective of the exhaust system is to throw out the hazardous gases from engine and make a smooth flow of air to enhance the power generation efficiency of the engine. But as your car gets older the pipes used for exhausting harmful gases get older and start offering poor performance. This adversely affects the functioning of the engine. To enjoy the huge power generation capability of the engine it is imperative that you should get the pipes of exhaust system replaced with strong stainless steel pipes that are capable of handling the powerful flow of gases smoothly.

Working of the clutch system and accelerator system: The combination of clutch and accelerator in accordance to engine results in improved fuel efficiency. Therefore, once you have re-mapped the engine control unit of your vehicle it becomes mandatory for you to upgrade the clutch and accelerator units of your car compatible to new engine settings to enjoy the full benefits of engine remapping.

Upgrading the wheels with carbon fibre wheel: The upgrading of car is not stagnated only to mechanical upgrades, but also involves cosmetic updates which are helpful in enhancing the looks of your car. Installing the carbon fibre wheels will given an aggressive appearance to your Jaguar. Apart from being blessed with stunning looks these wheels are developed by making use of strong material which further strengthens their sheet.

Halloween Edition: What Car the Reaper Ordered

You always see the strangest cars that are associated with the Reaper in the entertainment industry. Often they are old cars, rare cars and, in some instances, sports cars that the general population cannot afford. So what are some examples that could fit the profile of a Reaper?

Talbot Lago – 1937

The Talbot Lago has so many smooth sides that it looks like the kind of car that can just glide through the streets. People will make a path on the road just to let this car pass by. With such a long front, who wouldn’t mistake this car for something that belongs to a strange entity?

Rolls Royce Phantom – 1925

The body of the car looks like it’s shaped to pass through any condition. With a shark fin on the back of the car it truly does seem like the mean machine the Reaper would want to drive. Classic cars always get chosen for the strangest of tasks.

Morgan Aero 8 – 2000

It’s strange to think that this specific car is from this era. The original styles of the popular Morgans were from the Post War era. It’s known as a sports car in some regions because of the power it has. Now a collectors’ car with a rich vibe to it, it can definitely pass off as the car of the Reaper.

Rolls Royce Ghost – 2010

This may be a modern, high status car but it can make for a great version of transportation for the strange Halloween figure. Make this a black car with silver trimmings and you have an idea for what the Reaper may drive.

To decorate any of these cars to make for a sophisticated character you could use trimmings along the edges and the tyres should be silver for a bit of a glimmer on the roads. The body of the car should be black. Matte black is also a good option as it gives the impression of wealth and elegance. The wheels should have many spokes to give a noticeable effect so that a person knows when the Reaper approaches.

In the entertainment and costume world, these cars could really complete the whole profile of the Reaper character and it could give him a distinctive personality. Although, they may seem old and worthy of being stored in a collection garage, they could definitely rock the streets on the night of a Halloween party.

The Mercedes Tuning – What Are The Reasons To Tune Your Vehicle?

We are very well aware of the shooting fuel prices in the market. Hence, it is crucial to tune your Mercedes, so that it delivers great mpg. There are many reasons of the Mercedes tuning like better acceleration, enhanced torque, great economy, more power, healthier engine etc.

We have seen rapid growth in the technology in the field of automobiles. The super chip tuning technology is developed especially for the premium cars like Mercedes. The tuning is efficient for both the petrol and diesel version of car. It will ensure that your car gives best performance without any hassle.

Importance of tuning

Once the vehicle is tuned, it will reduce the emission and improve the performance by 15%. It is quite obvious that tuning will help your vehicle in multiple ways. However, you must tune the vehicle timely to avoid any inconvenience. The experts recommend visiting to the mechanic once in three months. The professionals will make sure that none of the part needs repairing.

As the fuel prices have increased, so does the dependency on vehicles. It is crucial to keep your car in good shape. If you maintain the car properly, then the car will run efficiently for long years without any hassle. Else, it would require regular repairing that will ultimately lead to lower mpg and reduce the performance.

What to consider while tuning the exhaust system?

The exhaust system of the Mercedes includes a front pipe, exhaust manifold, catalyst converter, silencer, exhaust tip and tail pipe. While tuning the system, muffler is the easiest to deal. The professionals will replace the stock muffler with high performance muffler.

As a result, you will get a free flow exhaust system. You must keep in mind that the inlet and outlet pipe of the muffler is of the same size as front and tail pipe. Check out the diameter of tail and front pipe. They must have same dimensions for better performance. Other terms of the exhaust system is a little complicated to understand. You must have knowledge of the engine’s power band, exhaust back pressure and usable RPM.

If excessive pressure is produced by the system, then it will have a negative impact on the performance of the engine. This will restrict the flow of exhaust gases. As a result, the engine will be inefficient to expel exhaust gases. Ultimately, it would lead to much reduced engine power.

Dos and the don’ts

Make sure that you never attach pea-shooter instead of the exhaust system to the engine. You must also not install a 10 inch wastewater pipe. In case the exhaust pipe is big enough, then it will lead to much reduced flow velocity of the gases. You have to keep in mind to get the exhaust back pressure perfect.

While tuning the exhaust system, the professionals aim to increase the power of the engine by the right exhaust tuning.