Why turbochargers used

Turbo Tips » What are turbochargers? So what is a turbocharger? This results in a greater mass of air entering the cylinders on each intake stroke. A turbocharger may also be used to increase fuel efficiency without increasing power.

This is achieved by recovering waste energy in the exhaust and feeding it back into the engine intake. By using this otherwise wasted energy to increase the mass of air, it becomes easier to ensure that all fuel is burned before being vented at the start of the exhaust stage. Please note; Unfortunately, we are experiencing processing delays for all orders which may result in delays in shipping. If possible, please confirm orders at your earliest opportunity to help minimise disruption to our normal high standards.

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Honeywell has been producing turbochargers since the s. Since that time, the technology has become synonymous with high-end performance in vehicles, but turbos are also now commonly used by automakers around the globe to improve energy efficiency through engine downsizing. By using a turbo, engine manufacturers can downsize the cylinder capacity of their engines to reap the fuel economy and emissions benefits of the lighter weight, smaller engine, without sacrificing performance.

These benefits are why, in its recent turbo forecast , Honeywell predicted that million cars with turbocharged engines will be produced during the next five years. By , 47 percent of all new vehicles are expected to have a turbo fitted. Here are some things you may or may not know about the turbocharger that is giving your car that extra boost!

Fuel Frugality: By integrating a turbocharger with a downsized engine, automakers can improve fuel efficiency by as much as 40 percent in diesel applications and 20 percent in gas applications as compared to a larger naturally-aspirated gas engine with similar output performance. Even in diesel engines they run hotter than the temperature of molten lava. The turbocharger bearing system appears simple in design but it plays a key role in a number of critical functions.

Some of the more important ones include: the control of radial and axial motion of the shaft and wheels and the minimization of friction losses in the bearing system. Bearing systems have received considerable attention because of their influence on turbocharger friction and its impact on engine fuel efficiency. With the exception of some large turbochargers for low-speed engines, the bearings that support the shaft are usually located between the wheels in an overhung position.

This flexible rotor design ensures that the turbocharger will operate above its first, and possibly second, critical speeds and can therefore be subject to rotor dynamic conditions such as whirl and synchronous vibration.

Seals are located at both ends of the bearing housing. These seals represent a difficult design problem due to the need to keep frictional losses low, the relatively large movements of the shaft due to bearing clearance and adverse pressure gradients under some conditions.

These seals primarily serve to keep intake air and exhaust gas out of the center housing. As such, they would primarily be designed to seal the center housing when the pressure in the center housing is lower than in the intake and exhaust systems.

These seals are not intended to be the primary means of preventing oil from escaping from the center housing into the exhaust and air systems. Oil is usually prevented from contacting these seals by other means such as oil deflectors and rotating flingers. Turbocharger seals are different from the soft lip seals normally found in rotating equipment operating at much lower speeds and temperatures.