Mahindra XUV500 Xclusive priced at INR 14.49 lakhs – Report

Will can be found in two alternatives.


According with a report upon Autocar Indian, the Mahindra XUV500 Xclusive edition will be available inside two alternatives and is priced at INR fourteen. 49 lakhs to the variant devoid of powered driver’s seats, and with INR fourteen. 65 lakhs to the variant while using powered driver’s seats. All rates are ex-Showroom, Brand-new Delhi.

Mahindra XUV500 Xclusive edition badge spied

This XUV500 Xclusive edition sees zero changes to its mechanicals.

The survey states the Xlusive edition is founded on the entry wheel push W8 variant in the SUV. Features for example an electric sunroof, electrically flexible driver’s seats, hydraulically helped bonnet, any reversing camera, gray metal wheels along with internet connectivity to the infotainment system are incorporated.

You can find no changes to the mechanicals in the SUV. It is still powered by the 2. 2-liter four-cylinder diesel engine which can be capable involving producing one hundred forty bhp along with 330 Nm involving torque, and it is paired with a 6-speed handbook transmission.
Mahindra XUV500 Xclusive edition reverse camera spied

The XUV500 Xclusive also advantages from a opposite camera.

The earlier report stated the sunroof is usually borrowed through the Ssangyong Rexton, while the hydraulic forks to the bonnet are taken from the brand-new Scorpio.

Real Life Pictures of Kia Optima Wagon Concept Sportspace


The next-generation Kia Optima is scheduled to be revealed at 2015 New York Auto Show held on the first week of April, but ahead this debut, Kia recently released the first teaser image of its new Optima (codenamed as JF) in a Sports Wagon concept ahead of the Geneva debut.Kia describes the “Sportspace” vehicle only being a D-segment concept. Today we wish to take a look closer into a complete gallery of live pictures taken at Kia’s European Design Center.“The concept has been created like a versatile and spacious accessory with an active lifestyle, as a purposeful, energetic design study for that style-conscious, so when a sanctuary from the stresses of the modern world,” said Kia.Both Optima models will gain the latest reinterpretation of Kia’s family “Tiger Nose” grille, as seen in the Geneva concept, where Kia says that both are “powerful” and “confident”.The interior quality will get another step forward, as in the new generation Kia Sorento, and checking out the spy picture, the 2016 Kia Optima will have new 8? inch infotainment system under chromed bar, getting all the attention from the new leather-wrapped dash, new infotainment and air controls. The 2016 Kia Optima will use the same steering wheel we saw on the Sportage spy shots.The concept looks to be in close proximity to production ready Kia Optima points and Wagon to a new family of mid-size models from Kia, including sedan, wagon as well as coupe derivatives, powered by petrol, turbo-petrol, diesel and hybrid powertrains. Stay tuned for Geneva!

How to Cope with A Teenage Driver

Life is tough. It’s an uphill battle from day one. And every time you think you catch a break, it really is just a break, and now you’re broken and you gotta wait to be fixed. Well, when you have a child, first they learn to walk and finally they don’t need to be carried everywhere they go. Then they can learn to talk and tell you want they’re thinking and feeling. Life is good! And then they become teenagers and it all goes downhill again. And they want to learn to drive, and you might as well give up! But as inevitable as the sun rising in the east, is your child learning to drive. So you can either fight it kicking and screaming, or you can do something about it. Here are some tips to making life with a teenage driver as painless as possible.

Safe Car


The worst part about it is knowing that they’re terrible at doing a thing that, if you mess up, you can die. How are you supposed to cope with that? There’s no real way to cope with it, so you might as well get your kid as safe a car as possible. Every air bag god invented should be in there. Good seat belts, and good lines of sight are also important. If you want to go all out, get a nice Toyota from the good people at Toyota San Diego. These cars are built for reliable safety features. They are not flashy, so your kid isn’t going to likely set speed records with their dang Camry. But Toyota’s are safe and reliable. Start shopping for them online at

Good Drive Habits


Good driving starts from their early childhood. You don’t wait until your child is 15 to start teaching driving. You should be aware throughout their whole childhood that some day they are going to be driving. So what this means, is you lead by example – no texting and driving. Focus on the road. Don’t do things you wouldn’t want your 16 year old doing behind the wheel. You can say all you want, but if they see you always texting and driving, they’re going to learn that it’s ok. Also, be verbal about what you’re doing, about checking blind spots as you merge, or about keeping a safe distance from the driver in front of them. All this stuff will be covered in driver’s ed, but it works better to be ingrained in their brains from their early life. You’ll be surprised how much they can recall from lessons they’ve learned just by watching you proactive good driving techniques.

Back Before Dark


Driving at night is the most difficult, not only because of poor visibility but also the prevalence of drunk drivers. Make sure that during their first year or so behind the wheel they get home before dark. It may be difficult for them to understand but it’s in their best interest longterm.

2016 Kia Optima Spotted in South Korea


Finishing the subsequent generation 2016 Kia Optima development (otherwise known as K5), and will preview the subsequent-generation model with the 2015 Geneva Motor Show in a concept form using the Sportspace. You can take a look to more 2016 Kia Optima pictures including interior.This project is a very difficult task for Kia engineers and Peter Schreyer’s design team, how to improve one of the most beautiful and succesful Kia models ever designed, and also lead K-series sales in South Korea. (Kia is currently losing market share every month in the local market)That’s why the new 2016 Kia Optima will feature a more sharper design (will premiere Kia’s new sedans design way, and will be followed by the next generation K7/Cadenza in 2016), a better interior quality and an engine choice between petrol, diesel (in Europe), hybrid (for sale in late 2015) and initially, a plug-in hybrid model (this car will be available during 2016).2016-kia-optima-interior-scooped-south-korea (3)The 2016 Kia Optima interior quality will get another step forward, such as the new generation Kia Sorento, and exploring the spy picture, the 2016 Kia Optima will have new 8? inch infotainment system under chromed bar, getting all the attention from the new leather-wrapped dash, new infotainment and air controls. The 2016 Kia Optima interior will use a similar steering wheel we saw around the Sportage spy shots.The design sticks closely to the current MY2015 Optima, including a wide “tiger nose” grille connected with the headlights back and forth and a wider taillights on the rear end. Speaking with Kia’s design team, the car won’t look like a latest Sorento and Sedona models, since these cars use a different target than sedans.2016-kia-optima-interior-scooped-south-korea (2)The petrol model could have more aggressive and sporty air intakes right in front bumper, even though the hybrid models get a closed front grille that opens automatically when cooling is required. New wheels and colour palette finished exterior updates.When we published the first interior picture, the initial impressions doesn’t were pretty good. Now what do you think after you saw this pictures where you can see more details?

2016 Ford Taurus to join 2015 Shanghai Auto Show


The Ford Motor Company [NYSE:F] will pull the covers off an all-new Taurus at the 2015 Shanghai Auto Show, which gets underway in just a few weeks. This will be the classic nameplate’s first appearance in China, a market where comfy, large sedans like the Taurus are still popular.

Ford is yet to reveal any solid details but says the new Taurus leveraged the automaker’s “global expertise” in vehicle design and development. Prototypes for the car, which suggest the new Taurus will look like a longer version of the Fusion, have been spotted here in the U.S. as well as in China and as far away as Australia.

CHECK OUT: Honda Confirms Type-R For U.S. At Civic Concept Debut: 2015 New York Auto Show

The platform underpinning the car will be a stretched version of the Blue Oval’s CD4 design, found in a variety of existing models such as the aforementioned Fusion as well as the Edge crossover and Lincoln MKZ. The stretched version of the CD4 platform will be common to the 2016 Lincoln Continental, previewed just this week in concept form at the 2015 New York Auto Show.

Expect front-wheel drive to be standard and all-wheel drive to be an option. It’s not clear yet if there will be a high-performance SHO model once again. Expect the powertrain lineup to include four- and six-cylinder EcoBoost engines.

The new Taurus will be revealed at a private event on April 18 before its debut at the Shanghai Auto Show just two days later. It will be one of 15 new Ford and Lincoln vehicles going on sale in China this year. A debut of the U.S.-spec car, which we expect to arrive as a 2016 model, should take place later this year.

“We are looking forward to taking the wraps off seven new vehicles for our customers in China and continuing our delivery of great products and innovative technologies,” Ford China CEO John Lawler said in a statement. “With the new Ford Taurus, our Ford Performance vehicles, and a few other surprises, there will truly be something for everyone.”

Handling an Accident


When you’ve just been rear ended, side swiped, or t-boned at a red light, the immediate shock can sometimes outweigh what you know you should be doing. Honda Poway and your local dealerships are glad to help deal with any body work that may be needed as a result of damage. But before you start thinking about repairs, there are several steps to take in the event of an accident.


To begin with, make sure that everyone involved is okay. If anyone is seriously injured, call 911. If no one is injured, you can move your car to the shoulder to allow for the flow of traffic. Make sure that you do not leave the scene. Call your local police department’s non-emergency number, if no one is hurt, let them know what happened and they will tell you whether or not they need to send an officer. Be sure to exchange information with the other drivers involved. You will need to provide (and receive) name, addresses, driver’s license numbers, phone number, make, model, and year of the vehicle, license plate number and insurance information. You can also get information from any witnesses or police officers at the scene. Be sure to document any evidence of the accident. If you have a camera with you, take photos of the damage. Be sure that you are communicative and cooperative with those involved and the police but do not admit guilt because it could interfere with how your insurance claim is processed later. Finally, be sure to remain calm. There’s no reason to panic or be upset. Everyone has accidents. Once you’ve processed your accident through insurance you can visit Tipton Honda’s website, to get information about repairs and make an appointment to bring your car in for work.

When you don’t know wheter or not to change the transmission fluid


Yes, though how often this service should be performed varies by manufacturer and vehicle, and it’s open to debate.

The manufacturer’s maintenance schedule for many automatic transmissions doesn’t call for fresh fluid until 100,000 miles or, with some Ford transmissions, even 150,000 miles. A lot of mechanics say that is too long and it should be done at least every 50,000 miles. Manual transmissions may be on a different schedule, so it’s best to consult the maintenance schedule in the owner’s manual.

Like other vital automotive fluids, transmission fluid deteriorates over time. Hard use – such as frequent stop-and-go city driving, hauling heavy loads, trailer towing – will accelerate the deterioration. That kind of driving raises the operating temperature of the transmission, and heat puts more strain on the transmission and the fluid, which helps facilitate gear shifts, cools the transmission and lubricates moving parts.

If you do a lot of driving under high-stress conditions, you should check the transmission level more often and have a repair shop check the condition of the fluid. Transmission fluid often is red but can come in other colors, and as it deteriorates it tends to turn darker. It may also acquire a burned odor that could indicate it needs to be changed or that the transmission is developing mechanical problems. Another indication it needs changing is dirt or other debris in the fluid. When you take your vehicle in for an oil change or other routine service, the repair facility may urge you to pay for a transmission-fluid change or flush. Even if they can show you that the fluid is darker than original, that might not mean you need fresh fluid right now. Step back, check the maintenance schedule in your owner’s manual and see what the manufacturer recommends before you decide. This also will give you time to price shop.

Many repair shops use flush systems that force out the old fluid and pump in new fluid. Though that sounds good, some manufacturers say you shouldn’t do that (Honda is one; there are others), so you need to know this before you agree to a flush. Look in your owner’s manual. Some manufacturers, such as Honda, also call for their own type of transmission fluid and warn that using other types could cause damage. Moreover, some automatic transmissions have filters that should be cleaned or replaced when the fluid is changed. Make sure the repair facility is using the correct fluid and procedures for your vehicle.

If you have never changed the transmission fluid in your vehicle and have more than 100,000 miles on the odometer, should you change it now? We have seen mixed opinions on this, with some mechanics suggesting you should just leave well alone if you aren’t having shifting problems. Adding fuel to this theory are stories about older transmissions failing shortly after they finally received fresh fluid. We have a hard time accepting that fresh fluid causes transmission failure, so our inclination would be to have it done if you’re planning on keeping the vehicle a few years or longer. However, fresh fluid is not a cure for gears slipping, rough shifting or other mechanical problems, so don’t expect a fluid change to be a magic elixir.

Why this 2016 Infiniti QX50 could be yours


Competes with: Acura RDX, Lexus NX, Mercedes-Benz GLK-Class
Looks like: Mostly the EX35-turned-QX30, around since late ’07
Drivetrain: 325-horsepower, 3.7-liter V-6 with seven-speed automatic transmission; rear- or all-wheel drive
Hits dealerships: Fall 2015

At first glance, the 2016 Infiniti QX50 looks like a snoozer of an update on what was originally the EX35 that debuted back in December 2007. Infiniti says there’s more than meets the eye, however. For starters, the compact SUV has outgrown its britches. Infiniti increased the wheelbase by more than 3 inches and most of that helps the once-cramped backseat. Both ground clearance and cabin volume have increased, too, and a few visual changes accompany the dimensional increases.

Related: More 2015 New York Auto Show News

Alongside the 2015 model, it’s easy enough to see the 2016 QX50’s updates. The front bumper gets a single opening versus last year’s bisected opening. Horizontal fog lights with busier-looking frames have replaced the circular lamps, and the grille has Infiniti’s “double arch” siding.

The extended wheelbase (the space between the front and rear wheels) adds 4.5 inches to the QX50’s overall length. Infiniti also updated the QX50’s side mirrors and rear bumper, but those aren’t as easy to pick out as the changes up front. Eighteen-inch alloy wheels and dual tailpipes are standard; 19-inchers are optional.

The dashboard’s dual-cowl shape and wraparound cockpit orientation carries over with few changes. A moonroof and heated seats are now standard and so are power-adjustable front seats and leather upholstery. Options include a power tilt/telescoping steering column, an eight-way power passenger seat (four-way power is standard) and a power-folding backseat.

Speaking of the backseat, passengers will appreciate the QX50’s longer dimensions, which add a much-needed 4.3 inches of rear legroom. Cabin volume increases about 8 percent to 115.4 cubic feet, and ground clearance grows 0.8 inches (0.4 inches with rear-wheel drive).
Under the Hood

Standard on the QX50 is Infiniti’s 3.7-liter V-6, which makes 325 horsepower and 267 pounds-feet of torque. It works through a seven-speed automatic transmission and rear- or all-wheel drive.

Standard safety features include six airbags and the required stability system. Safety options include blind spot and lane-departure warning systems, the latter with a preventative feature that attempts to keep the SUV in its lane. Forward collision warning with auto-braking and Infiniti’s 360-degree Around View Monitor are also optional.

Ways to Start Your Life Anew At Any Given Second

Life is a rough beast, one we all must tame and conquer. But there are some do’s and don’t’s about how to go about it. You could wallow in your abject misery for all of time and complain to anyone you meet about how you’re miserable and your life is as stagnant as a glacier, or you could embrace your new you and change your life around. Here are a few things you can do to turn that perpetual frown upside down and be a new you, one who is happy and pleasant to be around. The change is good and the time is now for his change. Don’t miss this opportunity. Go for it!

New Wardrobe


One thing that can cause a lot of people frustration is the feeling that their physical appearance is a bore and that every time the leave the house they look the same as they have for years. You can change that by getting a new wardrobe. Now we’re not suggesting going to Goodwill and getting a bunch of lame ratty clothing. What you need to do is go to a place like H&M where the clothes are cool looking and are cheap. Sure they won’t last very long and will fall apart, but before they do, you will be looking good and that spring in your step will surely carry you far.

New Car


Another thing we often over look as something we can change is your vehicle. You spend so much time in it and not only that but we are often defined by our car. We have no choice but to wear it as some sort of status symbol. So if you want to change things around for you, go to Ford Glendale and start shopping for a new car. You may be surprised to see that Fords these days are not a terrible eye sore and are actually kind of cool. Start browsing on and you’ll be amazed about how far your dollar can go. You can get a sporty little ride for not very much monthly payment, and that will surely go a long way to make you feel good about life.

New Body


If you’ve got a few extra pounds and i’m sure you do, then you better start exercising and dropping those pounds. A poor self image does a lot to ruin how you feel about yourself, and if you crave a new beginning then it’s time to get a move on and shed those extra pounds. You’ll be able to eat more of what you want since you’ll be shedding calories, and you’ll be able to look your friends and family in the eye with more confidence. Not only that, but you’ll fit into those old clothes from high school and you’ll be more attractive to the opposite sex. It’s a win win as you begin this new you life.

The wonders of heat engines


In our age of fuel cells and electric cars, steam locomotives (and even gasoline-powered cars) might seem like horribly old technology. But take a broader view of history and you’ll see that even the oldest steam engine is a very modern invention indeed. Humans have been using tools to multiply their muscle power for something like 2.5 million years, but only in the last 300 years or so have we perfected the art of making “”muscles””— engine-powered machines—that work all by themselves. Put it another way: humans have been without engines for over 99.9 percent of our existence on Earth!

Now we have engines, of course, we couldn’t possibly do without them. Who could imagine life without cars, trucks, ships, or planes—all of them propelled by powerful engines. And engines don’t just move us around the world, they help us radically reshape it. From bridges and tunnels to skyscrapers and dams, virtually every major building and structure people have made in the last couple of centuries has been built with the help of engines—cranes, diggers, dumper trucks, and bulldozers among them. Engines have also fueled the modern agricultural revolution: a vast proportion of all our food is now harvested or transported using engine power. Engines don’t make the world go round, but they’re involved in virtually everything else that happens on our planet. Let’s take a closer look at what they are and how they work!

Photo: The engine hall at Think Tank (the science museum in Birmingham, England) is an amazing collection of energetic machines dating back to the 18th century. Exhibits include the enormous Smethwick steam engine, the oldest working engine in the world. It’s not shown in this picture, largely because it was too big to photograph!
What is a heat engine?

An engine is a machine that turns the energy locked in fuel into force and motion. Coal is no obvious use to anyone: it’s dirty, old, rocky stuff buried underground. Burn it in an engine, however, and you can release the energy it contains to power factory machines, cars, boats, or locomotives. The same is true of other fuels such as natural gas, gasoline, wood, and peat. Since engines work by burning fuels to release heat, they’re sometimes called heat engines. The process of burning fuel involves a chemical reaction called combustion where the fuel burns in oxygen in the air to make carbon dioxide and steam. (Generally, engines make air pollution as well because the fuel isn’t always 100 percent pure and doesn’t burn perfectly cleanly.)

There are two main types of heat engines: external combustion and internal combustion:

Steam engine piston and cylinder

In an external combustion engine, the fuel burns outside and away from the main bit of the engine where the force and motion are produced. A steam engine is a good example: there’s a coal fire at one end that heats water to make steam. The steam is piped into a strong metal cylinder where it moves a tight-fitting plunger called a piston back and forth. The moving piston powers whatever the engine is attached to (maybe a factory machine or the wheels of a locomotive). This is an external combustion engine because the coal is burning outside and some distance from the cylinder and piston.
In an internal combustion engine, the fuel burns inside the cylinder. In a typical car engine, for example, there are something like four to six separate cylinders inside which gasoline is constantly burning with oxygen to release heat energy. The cylinders “”fire”” alternately to ensure the engine produces a steady supply of power that drives the car’s wheels.

Internal combustion engines are generally far more efficient than external combustion engines because no energy is wasted transmitting heat from a fire and boiler to the cylinder; everything happens in one place.

Photo: A steam engine’s cylinder and piston. On most steam locomotives, there’s one cylinder on each side of the engine and the cylinders fire out of step to ensure that one or the other is powering the locomotive at all times.
How does an engine power a machine?

Engines use pistons and cylinders, so the power they produce is a continual back-and-forth, push-and-pull, or reciprocating motion. Trouble is, many machines (and virtually all vehicles) rely on wheels that turn round and round—in other words, rotational motion. There are various different ways of turning reciprocating motion into rotational motion (or vice-versa). If you’ve ever watched a steam engine chuffing along, you’ll have noticed how the wheels are driven by a crank and connecting rod: a simple lever-linkage that connects one side of a wheel to a piston so the wheel turns around as the piston pumps back and forth.

An alternative way to convert reciprocating into rotational motion is to use gears. This is what brilliant Scottish engineer James Watt (1736–1819) decided to do in 1781 when he discovered the crank mechanism he needed to use in his improved design of steam engine was, in fact, already protected by a patent. Watt’s design is known as a sun and planet gear) and consists of two or more gear wheels, one of which (the planet) is pushed up and down by the piston rod, moving around the other gear (the Sun), and causing it to rotate.

Planetary epicyclic gear. Foot-powered lathe.
Photo: Two ways of converting reciprocating motion into rotary motion: Left: A sun and planet gear. When the piston moves up and down, the gears go round and round. Right: The problem of converting up-and-down to round-and-round motion is simply solved in this foot-powered lathe. When you press up and down on the treadle (the foot peddle), you make the string rise and fall. That makes the shaft the string is attached to rotate at speed, powering the lathe and a drill or other tool attached to it. Both photos taken at Think Tank, the science museum in Birmingham, England.

Some engines and machines need to turn rotary motion into reciprocating motion. For that, you need something that works in the opposite way to a crankshaft—namely a cam. A cam is a non-circular (typically egg-shaped) wheel, which has something like a bar resting on top of it. As the axle turns the wheel, the wheel makes the bar rise up and down. Can’t picture that? Try imagining a car whose wheels are egg-shaped. As it drives along, the wheels (cams) turn round as usual but the car body bounces up and down at the same time—so rotational motion produces reciprocating motion (bouncing) in the passengers!

Cams are at work in all kinds of machines. There’s a cam in an electric toothbrush that makes the brush move back and forth as an electric motor inside spins around.
Types of engines

There are half-a-dozen or so main types of engines that make power by burning fuel:

An Easton Amos gas pumping steam engine
External combustion engines

Photo: External combustion: This stationary steam engine was used to pump natural gas to people’s homes from 1864. Photo taken at Think Tank, the science museum in Birmingham, England.
Beam engines

The earliest steam engines were giant machines that filled entire buildings and they were typically used for pumping water from flooded mines. Pioneered by Englishman Thomas Newcomen (1663/4–1729) in the early 18th century, they had a single cylinder and a piston attached to a large beam that rocked back and forth. Steam was pumped into the cylinder forcing the piston to rise and the beam to move down. Then water was squirted into the cylinder, cooling the steam, creating a partial vacuum, and making the beam tilt back the other way. Beam engines were an important technological advance, but they were much too large, slow, and inefficient to power factory machines and trains.
Steam engines

In the 1760s, James Watt greatly improved Newcomen’s steam engine, making it smaller, more efficient, and more powerful—and effectively turning steam engines into more practical and affordable machines. Watt’s work led to stationary steam engines that could be used in factories and compact, moving engines that could power steam locomotives. Read more in our article on steam engines.
Stirling engines

Solar collector powering a Stirling engine

Not all external combustion engines are huge and inefficient. Scottish clergyman Robert Stirling (1790–1878) invented a very clever engine that has two cylinders with pistons powering two cranks driving a single wheel. One cylinder is kept permanently hot (heated by an external energy source that can be anything from a coal fire to a geothermal energy supply) while the other is kept permanently cold. The engine works by shuttling the same volume of gas (permanently sealed inside the engine) back and forth between the cylinders through a device called a regenerator, which helps to retain energy and greatly increases the engine’s efficiency. Find out more in our main article on Stirling engines.

Photo: Stirling engines don’t necessarily involve combustion, though they’re always powered by an external heat source. Here the heat is coming from a giant array of mirrors that gather solar energy and feed it to the engine. Photo by Warren Gretz courtesy of US DOE/NREL (US Department of Energy/National Renewable Energy Laboratory).
Internal combustion engines
Gasoline (petrol) engines

In the mid-19th century, several European engineers including Frenchman Joseph Étienne Lenoir (1822–1900) and German Nikolaus Otto (1832–1891) perfected internal combustion engines that burned gasoline. It was a short step for Karl Benz (1844–1929) to hook up one of these engines to a three-wheeled carriage and make the world’s first gas-powered automobile. Read more in our article on car engines.

A red Jaguar XJS sports car with the bonnet/hood open

Photo: A powerful gasoline-powered, internal-combustion engine from a Jaguar sports car.
Diesel engines

Later in the 19th century, another German engineer, Rudolf Diesel (1858–1913), realized he could make a much more powerful internal combustion engine that could run off all kinds of different fuels. Unlike gasoline engines, diesel engines compress fuel much more so it spontaneously bursts into flames and releases the heat energy locked inside it. Today, diesel engines are still the machines of choice for driving heavy vehicles such as trucks, ships, and construction machines, as well as many cars. Read more in our article on diesel engines.
Rotary engines

One of the drawbacks of internal combustion engines is that they need cylinders, pistons, and a spinning crankshaft to harness their power: the cylinders are stationary while the pistons and crankshaft are constantly moving. A rotary engine is a radically different design of internal combustion engine in which the “”cylinders”” (which aren’t always cylinder shaped) rotate around what is effectively a stationary crankshaft. Although rotary engines date back to the 19th century, perhaps the best-known design is the relatively modern Wankel rotary engine, notably used in some Japanese Mazda cars. Wikipedia’s article on the Wankel rotary engine is a good introduction with a brilliant little animation.
Engines in theory

The steam engine Manston with tender

The pioneers of engines were engineers, not scientists. Newcomen and Watt were hands-on, practical “”doers”” rather than head-scratching, theoretical thinkers. It wasn’t until Frenchman Nicolas Sadi Carnot (1796–1832) came along in 1824—well over a century after Newcomen built his first steam engine—that any attempt was made to understand the theory of how engines worked and how they could be improved from a truly scientific perspective. Carnot was interested in figuring out how engines could be made more efficient (in other words, how more energy could be obtained from the same amount of fuel). Instead of tinkering with a real steam engine and trying to improve it by trial and error (the kind of approach Watt had taken with Newcomen’s engine), he made himself a theoretical engine—on paper—and played around with math instead.

The Carnot heat engine is a fairly simple mathematical model of how the best possible piston and cylinder engine could operate in theory, by endlessly repeating four steps now called the Carnot cycle. We’re not going to go into the theory here, or the math (if you’re interested, see NASA’s Carnot Cycle page and the excellent Heat Engines: the Carnot Cycle page by Michael Fowler, which has a superb flash animation).

What is worth noting is the conclusion Carnot reached: the efficiency of an engine (real or theoretical) depends on the maximum and minimum temperatures between which it operates. Making the temperature of the fluid inside the cylinder higher at the start of the cycle makes it more efficient; making the temperature lower at the end of the cycle also makes it more efficient. In other words, a really efficient heat engine operates between the greatest possible temperature difference. That’s why real engines—in cars, trucks, jet planes, and space rockets—work at such enormously high temperatures (and why they have to be built from high-temperature materials such as alloys and ceramics). It’s also why things like steam turbines in power plants have to use cooling towers to cool their steam down as much as possible: that’s how they can get the most energy from the steam and produce the most electricity.