24 October 2017
Today, the ubiquitous turbo engine. Even those companies that never got over "atmosfernyi" has passed their position or are just starting to do it. The number of turbochargers continues to grow. Two or three turbines?
Today, the ubiquitous turbo engine. Even those companies which up to the latter clung to "atmosfernyi" has passed their position or only start to do it. At this number of turbochargers continues to grow. Two or three turbines? Easy! A former Ford engineer Jim Clark (Jim Clarke) decided to go even further: it offers to install a separate "snail" on each cylinder.
It is important to understand that this idea does not come from another "couch expert", and engineer with rich experience. Jim for many years was designed by Ford motors. In particular, he was responsible for the modular V8 engine family Duratec V6 and even the V12, which was mounted on supercars Aston Martin.
Why would the motor need is the number of turbochargers? To answer on this question is required to examine the scheme of Jim Clark in more detail. It includes some interesting points and offers a look at the air supply system under different angle. For example, the engineer proposes to install individual throttle for each intake valve. "Between throttle and inlet valves of a typical engine has a volume of intake manifold, roughly equivalent to the working volume of the engine, says Clark. — Takes time to its filling when you open the flap".
Also Jim Clark proposes to establish a "hot" impeller of turbochargers as close as possible to the outlet valves, that will allow you to save more exhaust energy. For this is expected to use the individual turbine for each cylinder.
Since "snail" will be leaner and easier than traditional to spin they will be faster. Thanks to this engine will be easier to get in the peak torque to avoid "turboyamy".
While Clark's calculations exist only on paper; not built a single functioning prototype. In theory, such a motor does seem more efficient, but it has several significant disadvantages. Key of them is the complexity and high cost. For example, three-cylinder motor you will need to use three turbines and six throttle valves, in fact, commonly, these elements are present in a single copy. With then assess the prospects of this direction is not easy.
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