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2011 Mazda Shinari


Meet the Shinari, Mazda's latest concept car. Handsome isn't it? An upmarket four-door, four-seat hatchback-booted coupe in the mould of the Aston Martin Rapide and Mercedes CLS.

But what’s most notable about it is how finished it is. Concept cars are normally styling bucks, made of clay or wood, a flash surface with nothing underneath. But this one, unveiled at an exclusive private viewing in Milan and not destined to appear at the Paris Motorshow, has a proper interior and even drives -although the engine noise was a curiously indistinct blend of rotary and piston, ‘to keep you guessing’, an engineer told us.

It is a four-door sedan but it certainly doesn’t appear to be in a usual, boring way. The rear doors don’t have a complete pillar, instead, the roof line just continues all the way over the boot lid in one smooth line. And check out the rear guards that mimic a squatting lion or kangaroo, with it’s big lower leg running along half of the sill.

Translating this initial moment of 'instantaneous movement' being pursued by Mazda design into the Mazda Shinari Concept car presented various challenges to both the designers and the modelers working on the project. The process involved a series of activities that saw the team draw inspiration from a variety of places. This included each team member creating sketches and freely sculpting models from clay to represent their own perceptions of 'KODO - Soul of Motion'. It then continued with the exploration of the functional beauty seen in traditional Japanese crafts and the motion witnessed in Japan's ancient martial arts.

As the team continued this exploratory process, Nakamuta focused on a force so powerful that it can bend a strong section of steel plate. The Mazda Shinari Concept design adds subtle twists and tension to create forms that express agile and powerful movement, resulting in the expression of 'KODO - Soul of Motion'.

Car Engine Works

There are a number of pistons inside an engine depending on the design, 4 to 12 cylinders usually. The pistons are connected to a crankshaft through a connecting rod. Pistons fire consecutively to rotate the crankshaft inside the engine block. The oil pump pushes oil through the oil filter and then supplies oil to vital engine parts including the crank and camshaft, cylinder walls and piston rings, valve train, cam lifters and the timing gears or chain. Motor oil is used to lubricate and cool internal engine parts. Oil is pumped up through the engine, then returns to the bottom of the engine and is gathered in the oil pan.

Honda Engine

Over Head Camshaft Engine - 4 Cylinder (courtesy of beaudaniels.com)

The cylinder head is connected to the top of the engine block and allows air/fuel mixture and exhaust into and out of the cylinder block. The cylinder head has the duty of holding the air/fuel mixture charge inside the cylinder as it combusts, forcing the piston downward. The cylinder head is connected to the engine block using head bolts, using a head gasket to seal both parts.
Over Head Cam Cylinder Head

Over Head Cam Cylinder Head

A camshaft is used to open and close intake and exhaust ports by using valve train components. These components will vary depending on the design of the engine. There are primarily two styles of valve systems: over head cam which consists of a camshaft and lifter, and the in block system which consist of a camshaft, lifter, push rod, rocker arm. Both styles utilize a valve spring to hold the valve closed.

Car Engine Image Gallery


Corvette ZR1 car engine
Photo courtesy General Motors
The Corvette ZR1's supercharged 6.2-liter V8 engine produces 620 horsepower standard. See more pictures of car engines. See more pictures of car engines.

­Have you ever opened the hood of your car and wondered what was going on in there? A car engine can look like a big confusing jumble of metal, tubes and wires to the uninitiated.

You might want to know what's going on simply out of curiosity. Or perhaps you are buying a new car, and you hear things like "3.0 liter V-6" and "dual overhead cams" and "tuned port fuel injection." What does all ­of that mean?

­­In this article, we'll discuss the basic idea behind an engine a­nd then go into detail about how all the pieces fit together, what can go wrong and how to increase performance.