Search for: "supercharger"

Superchargers vs. Turbos

What is the difference between a Turbocharger and a Supercharger? It may seem that the two terms are used interchangeably. However, if so, it would be in error. While they both augment an engine’s power, their components are completely different. Essentially, when considering superchargers vs turbos, you are looking at the price and complexity of the part.

What is a Supercharger?

A supercharger is a part of an automobile which works to increase the air density or pressure supplied to the internal combustion engine of the vehicle. This air compressor offers increased power to the engine by giving more oxygen to it in each intake cycle. Therefore, a supercharger enables the engine to do more work and burn more fuel.

Superchargers can be categorized into two main types: dynamic compressors and positive displacement. Dynamic compressors deliver pressure at high speeds, usually above a threshold speed. Positive displacement compressors and blowers deliver pressure increase at a constant level at all engine speeds.

What is a Turbocharger?

When a turbine provides power for the supercharger, the supercharger is referred to as a turbo or turbocharger. The exhaust gas powers these turbine-driven units. They force air into the combustion chamber to increase power and efficiency of the internal combustion engine. Due to forcing extra air, the engine adds more fuel proportionally into the combustion chamber. This further leads to improved output results of the engine.

How Superchargers and Turbochargers Work

The amount of boost produced by a supercharger depends on the impeller rotational speed and size, and the type of compressor. The maximum operating speed of an automotive supercharger is usually over 30,000 RPM while that of a turbo is over 100,000 RPM. Until the impeller reaches the point of maximum speed, the compressor doesn’t produce its full boost.

Turbochargers use centrifugal compressors. They boast the same limitations as a supercharger. In a turbo, the speed of the impeller depends on the speed of the exhaust stream and not on the engine’s speed. The turbine’s speed is not fixed; it changes with the position of the throttle.

The turbine spins below its boost threshold at steady cruising speed. When pressing the gas pedal, there is an increase in speed of the exhaust gasses. This results in the acceleration of the turbine. It takes a bit of time for the turbine to overcome its own inertia and to reach the peak speed. This produces a brief delay, which is termed turbo lag.

Turbo Lag

The amount of boost produced affects the severity of turbo lag. A number of efforts have been made to reduce turbo lag. The list includes reducing the turbine mass, changing their shape, adding movable nozzles, and others.

Some cars use two or more different sized sequential turbochargers, where the smaller turbo responds with good low-speed, and the bigger one provides a maximum boost at peak speeds. A few vehicles such as the 1986-1988 Porsche 959 as well as the 2007 Peugeot 407 2.2 HDi use sequential turbochargers.

It is easier to reduce turbo lag with a turbo featuring low maximum boost. The turbo with light pressure used by some Volvo and Saab engines doesn’t produce good boost, but they have a fairly linear power curve and minimal lag.

Two-stage turbo-superchargers are an even more complex alternative. They use both a turbocharger and an engine-driven supercharger in sequence. This kind of supercharger produces maximum boost even at low speeds. Volkswagen uses this concept with its twincharger engines.

Key Differences between the Turbo and Supercharger

  1. Efficiency
  2. Space Requirement
  3. Mode of Driving Power
  4. Complexity and Cost

Now that you understand how a turbocharger and supercharger work, let’s take a moment to explore the key differences between them.

Efficiency

Turbos tend to be less responsive, but more efficient in comparison to the superchargers. Superchargers consume some amount of engine power even when they are not producing useful boost. The back pressure increased by the turbochargers in the exhaust also costs power. In the case of a turbo, the compressor, even at low speeds, can create some amount of internal drag. The increased power that’s provided by the compressor at maximum boost outweighs these parasitic losses, but the fact can’t be ignored that these losses affect the efficiency of the engine.

Space Requirement

Both turbo and superchargers consume more space in the engine compartment and increase the weight of the vehicle. Typically, the bolt-on superchargers fit easily under the hood, and they weigh less in comparison to the weight of Turbo.

Mode of Driving Power

The engine drives a supercharger which connects through a belt to the crankshaft. A turbocharger’s turbine gets its power from the exhaust gas of the engine.

Complexity and Cost

In order to assure engine efficiency, the moving parts need to be strong and precisely machined. Turbos are made from exotic materials so they can withstand high temperatures and high operating speed of the exhaust system. Forced-induction engines demand proper lubrication, as they tend to put a high strain on the oil system of the engine. It is important to use good-quality oil to ensure best results. Additionally, frequent oil change is also important in superchargers in order to eliminate the possibilities of sludge build-up.

The best application for superchargers and turbos depends on the type of vehicle you outfit. You will find that the turbochargers are most commonly used in Europe because of the smaller engines in European cars. Overall, superchargers deliver better boost at lower RPMs, and they’re comparatively more reliable. Whichever you choose, you can count on boosted performance for your car.

 

References

http://ateupwithmotor.com/terms-technology-definitions/turbocharging-and-supercharging/

http://auto.howstuffworks.com/question122.htm

http://procarmechanics.com/differences-between-superchargers-and-turbochargers/

http://www.carblogindia.com/what-is-a-turbocharger-what-is-a-supercharger-difference-between-turbocharger-and-supercharger/

http://www.redline360.com/garage/supercharger-vs-turbo-which-is-better-and-whats-the-difference

How Does a Diverter Valve Work with a Turbo System?

How Does a Diverter Valve Work with a Turbo System?

How It Works 101

Driving a turbo car is a fun experience. The acceleration boost from the turbo is quite thrilling. Anyone who’s driven or owns a turbo car will understand. But, did you ever wonder why a turbo makes an air release sound when releasing the gas? That sound is usually a blow-off or diverter valve. Per this article, the focus will be solely on the diverter valve concept. So, how does a diverter valve work with a turbo?

Breakdown of Diverter Valve Functionality

A diverter valve is a manifold vacuum-actuated valve that releases pressure into the intake system on turbo engines. This valve is also known as a compressor bypass valve (CBV) or a pressure relief valve. Furthermore, the valve release occurs during the lifting or closing of the throttle. Hence, while accelerating and then releasing the throttle, the car makes an air sound. This sound is the air pressure releasing into the intake. Many turbo enthusiasts love this sound, just as a supercharger fans enjoys the high-rev whining. By sending the air back into the intake, it overall benefits the performance of the vehicle. Even if it is only a slight boost in power, every bit counts.

Vroom! Hiss! Vroom! Hiss!

Euro Diverter Valves and DV+ Explained [GO FAST BRETT] – MCM TV2 – YouTube

Well, hopefully this article helps the reader understand the purpose of a diverter valve. Any vehicle with a turbo has some form of a blow-off valve. And, each one functions differently. Manufacturers such as Audi and VW use diverter valves in their vehicles. Furthermore, Aftermarket diverter valves are a great addition to a turbo vehicle. But, first, always ensure the valve fits the specific model. Buying the wrong valve may lead to lost time and longer wait periods. In conclusion, the diverter valve is a piece of technology that offers a way to be energy efficient.

2020 Range Rover Sport HST: New 395-HP Inline Six

2020 Range Rover Sport HST: New 395-HP Inline Six

JLR Builds New Inline Six

Jaguar Land Rover, aka JLR, recently revealed a new 395-horsepower inline six engine. Currently, the Range Rover Sport has a 3.0-liter supercharged V6. The major flaw with this engine is that it is actually a V8 block. Yes, that is correct. Basically, due to JLR being a smaller company, a cheap alternative to developing a new engine is to use one already in the shop. So, engineers put a 6-cylinder heads into a V8 block. Although the engine works, it is not efficient or optimal. But, now, that is going to change! One of the first vehicles to contain this engine will be the 2020 Range Rover Sport HST.

A Dive into the New Inline Six

2020 Range Rover Sport HST - New 3.0-Liter Supercharged Inline Six - Manufacturer Picture - EuroDrift

2020 Range Rover Sport HST – New 3.0-Liter Supercharged Inline Six – Manufacturer Picture – EuroDrift

Now, let’s take a dive into the new inline six. The 2020 Range Rover Sport HST will use the new 3.0-liter supercharged inline six. This motor produces 395 horsepower and 405 lb.-ft. of torque. Obviously, this is with the help of the single twin-scroll supercharger. On top of that, there is actually a 48-volt electric supercharger. This helps minimize boost timing and maintain energy that is otherwise lost to the environment.

Regardless, this car can hit 60 mph in only 5.9 seconds. This is 0.9 seconds faster than the typical Sport with the V6 engine. As with JLR, superchargers are spanning the market including other manufacturers such as Audi.

Ready for the 2020 Range Rover HST?

New Range Rover Sport HST – Land Rover – YouTube

So, now that the info is out there, are you ready for the 2020 Range Rover Sport HST? As a 2020 model year, the car may arrive in late 2019 or early 2020. With a tip of the hat to the previous V6 variant, the new I6 will conquer that loss. The new motor allows JLR to compete with more sophisticated manufacturers. And, the idea behind the electric supercharger, is already in use by Mercedes-Benz models. Basically, it absorbs energy from the brakes and so forth to provide boost and power certain functions. At some point, this information will be available from JLR. In conclusion, the HST will be a game changer for the manufacturer… and is probably ready for a run at the Dragon Challenge!

2020 Range Rover Sport HST - Side - Manufacturer Picture - EuroDrift

2020 Range Rover Sport HST – Side – Manufacturer Picture – EuroDrift

Zenvo TSR-S: 1,177 Horsepower & Active Rear Wing

Zenvo TSR-S: 1,177 Horsepower & Active Rear Wing

Debut at Geneva International Motor Show 2018

Zenvo TSR-S - Rear Corner - Geneva International Motor Show 2018 - Wikipedia Commons - EuroDrift

Zenvo TSR-S – Rear Corner – Geneva International Motor Show 2018 – Wikipedia Commons – EuroDrift

At the Geneva International Motor Show 2018, Zenvo unveiled the new TSR-S model. The Zenvo TSR-S is a crossover design between the TSR and the TS1 GT. Basically, the “S” extension stands for street legal. With a basis in a race car, the TSR-S contains top notch aerodynamics. The braking, cornering, and stability withhold new innovative features. Most noteworthy, the TSR-S has an active Centripetal Wing. This wing actively functions to optimize high-speed cornering and stability.

5.8-Liter Twin Supercharger Engine

Zenvo TSR-S - Front Corner Aerodynamics - Manufacturer Picture - EuroDrift

Zenvo TSR-S – Front Corner Aerodynamics – Manufacturer Picture – EuroDrift

The Zenvo TSR-S is a performance beast under the hood. Surprisingly, the TSR-S sports a 25.8-liter V8 engine with twin centrifugal superchargers. This motor build boasts a whopping 1,177 base horsepower… phew! The engine works in combo with a paddle shift 7-speed gearbox. Furthermore, this gearbox has helical-cut dog gears. On top of this, the engine features sequential fuel injection. From 0 to 60 mph, the TSR-S takes only 2.8 seconds. Amazingly, the TSR-S can reach 124 mph in only 6.8 seconds. The top speed of this model will be 202 mph which is electronically limited.

The Aerodynamics of the TSR-S

Zenvo TSR-S - Air Scoop Aerodynamics - Manufacturer Picture - EuroDrift

Zenvo TSR-S – Air Scoop Aerodynamics – Manufacturer Picture – EuroDrift

In addition to the powerful engine, the Zenvo TSR-S has a high-grade aerodynamic design. Firstly, the front splitter design improves front to rear downforce distribution. With the front wheel housing outlets, the front-end design decreases front wheel wake and directs air to intercoolers. Secondly, the rear of the TSR-S has an air scoop and new diffuser. These work to optimize underbody air extraction and decrease rear tire wake. Finally, the Centripetal Wing works with two rotation degrees of freedom. This allows the wing to actively act as an air break and cornering stabilizer. Simply put, the rear wing can actively tilt in cornering to maximize performance.

Zenvo TSR-S - Rear Aerodynamics - Manufacturer Picture - EuroDrift

Zenvo TSR-S – Rear Aerodynamics – Manufacturer Picture – EuroDrift

A Street Legal Race Car

1200HP Zenvo TSR-S – Active Aero & BRUTAL Sound! – Lars Mars Cars – YouTube

The Zenvo TSR-S is basically a street legal race car. With over 1,000 horsepower and aerodynamics galore, this car is a beast. This car suits anyone looking for an over the top track car, for daily use. Although this car may not be optimal for a daily rush hour commute, it would be quite thrilling to drive around town. Rest assured, the ricers of town will be jealous… and probably looking for a race. Not surprisingly, 99% would not stand a chance against this machine. In conclusion, the Zenvo TSR-S is a true to heart track car.

Zenvo TSR-S - Rear - Manufacturer Picture - EuroDrift

Zenvo TSR-S – Rear – Manufacturer Picture – EuroDrift

The Italian Job: 2003 Mini Cooper S

The Italian Job: 2003 Mini Cooper S

Fun Facts About the Italian Job 2003 Mini Cooper S

There are lots of iconic movie cars, but very few “small” cars outside of Herbie the Love Bug and, of course, the Mini Cooper from the Italian Job.  In fact, both the original 1969 and the 2003 movie, act as a full-length commercial for the Mini Cooper.

The original picture features three Mk1 Austin Mini Cooper S’s, in red, white and blue and the 2003 movie showcases the 2003 Mini Cooper S, modified both on and off-screen.

1963 Austin Mini Cooper S Mk1 - Front - The Italian Job - Wikimedia Commons - EuroDrift

1963 Austin Mini Cooper S Mk1 – Front – The Italian Job – Wikimedia Commons – EuroDrift

On-Screen and Off-Screen Modifications

On screen, the Mini Coopers were to be used to “get back the gold” after a double-cross. The main characters devise a plan to update and modify three small cars (Mini Coopers). They want them to be FAST and with a beefier suspension to carry the heavy bars of gold they hope to recover.

Off-screen, it was actually necessary for the movie makers to make modifications to the three cars before shooting could take place. Two electric-powered Mini Coopers and a Mini Cooper S had to be built because gasoline-powered vehicles are prohibited in Los Angeles’ subway system. Without the modifications, that iconic chase scene through the tunnels could not have taken place.

Another Mini Cooper with two steering wheels was used for some of the shooting. This was so that a stunt driver could navigate while the actors did their thing for the camera. This one of a kind Mini now sits on display at the Mini factory in Cowley, Oxford.

Specs on a Non-Modified 2003 Mini Cooper S

The Italian Job (2003) – Trailer – Paramount – YouTube

How close to what you see on the screen is a real Mini Cooper S?

A non-modified 2003 Mini Cooper S has a 1.6-liter four-cylinder engine with a mechanical-drive supercharger and produces 163 horsepower.  Though it’s a bit slow off the line, the six-speed manual transmission means there’s plenty of power and good control. However, be prepared to do a lot of shifting. If it’s your daily driver, you may find that to be a bit of a nuisance.

All in all, people find the Mini-Cooper fun to drive around. However, most agree that the size and shifting make it a bit impractical for families or the daily commute.

 

 

2017 Aston Martin Rapide S: A British Luxury Sedan

2017 Aston Martin Rapide S: A British Luxury Sedan

Aston Martin’s Luxury Sedan

2017 Aston Martin Rapide S - Rear with Doors Open - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Rear with Doors Open – Manufacturer Picture – EuroDrift

In early 2010, Aston Martin introduced the Rapide luxury sedan to the world. The 2017 Aston Martin Rapide S arrives in two different versions with slightly differing MSRPs. First, there is a Shadow Edition with a MSRP from $204,950. On the other hand, there is a base edition with a MSRP of $206,000. Surprisingly, the “special edition” is slightly cheaper than the base edition… that’s kind of odd, isn’t it? Either way, the Aston Martin Rapide is quite the unique British luxury sedan.

Development & Production of the Rapide

2017 Aston Martin Rapide S - Side - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Side – Manufacturer Picture – EuroDrift

Not surprisingly, the 2017 Aston Martin Rapide S basis is the Vanquish. The Vanquish is one of Aston Martin’s most well-known and respected vehicles. This made it the preferred vehicle for the transition into a 4-door sedan. The Rapide is currently in production at the Gadyon, England plant. Previously, from 2010 to 2012, the car was built in Graz, Austria.

6.0-Liter DOHC V12 with 560 Horsepower

2017 Aston Martin Rapide S - Engine - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Engine – Manufacturer Picture – EuroDrift

The 2017 Aston Martin Rapide S sports a 6.0-liter QOHC 48-valve V12 engine. This motor withholds an aluminum block and heads as well as port fuel injection. Shockingly, the motor does not have a supercharger or turbo… just straight, raw power. At the peaks, the Rapide boasts 560 horsepower and 465 lb.-ft. of torque. This engine setup works in conjunction with the new 8-speed Touchtronic III ZF automatic transmission which shifts in just 130 milliseconds. The top speed of the Rapide is 203 mph. Overall, the Rapide has had a few overhauls in power with this being the newest design.

Quarter Mile in Only 12.4 Seconds

2017 Aston Martin Rapide S - Interior - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Interior – Manufacturer Picture – EuroDrift

The 2017 Aston Martin Rapide S can hit 60 mph in only 4.2 seconds. From 0 to 100 mph, it takes only 9.3 seconds. On the quarter mile, the Rapide S completes it in 12.4 seconds. Furthermore, on the 200-ft-diameter skid pad, the car has a road holding value of 0.93 g. For a luxury sedan, the Rapide is quite the performer. These values may not match the Vanquish, but they are absolutely fit for the track.

Features & Technology

2017 Aston Martin Rapide S - Dashboard - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Dashboard – Manufacturer Picture – EuroDrift

The 2017 Aston Martin Rapide S has a handful of typical features and technology. First, the car has a LED lighting system, which most modern cars contain. Secondly, the car sports the usual technology such as Bluetooth, navigation, and radio. Thirdly, there is a push start button for turning on the vehicle. Lastly, the car wears 20” wheels which complement the design very nicely. Although this car isn’t very futuristic technology wise, it meets the minimal requirements of the current era.

2017 Aston Martin Rapide S - Engine Start Button - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Engine Start Button – Manufacturer Picture – EuroDrift

The Rapide is a True Luxury Sports Sedan

Aston Martin – Rapide S – The World’s Most Beautiful 4-Door Sports Car – Aston Martin – YouTube

The 2017 Aston Martin Rapide S is a true luxury sports sedan. From it’s raw power V12 to it’s sporty design, this car offers the best of luxury and sport. With a MSRP of over $200,000, the ownership of this car is quite limited. This makes a car like this quite a spectacle to see on the road. For the luxury enthusiast, this car is a great complement to the car collection. In conclusion, the Rapide S is a great introduction of Aston Martin into the luxury sedan market.

2017 Aston Martin Rapide S - Differential, Steering, & Suspension Diagram - Manufacturer Picture - EuroDrift

2017 Aston Martin Rapide S – Differential, Steering, & Suspension Diagram – Manufacturer Picture – EuroDrift

Pin It on Pinterest