{"id":11277,"date":"-0001-11-30T00:00:00","date_gmt":"-0001-11-30T00:25:21","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T23:00:00","slug":"how-turbochargers-and-superchargers-work-and-why-modern-cars-are-using-them-again","status":"publish","type":"post","link":"https:\/\/micksgarageblog.org\/how-turbochargers-and-superchargers-work-and-why-modern-cars-are-using-them-again\/","title":{"rendered":"How Turbochargers and Superchargers work and why modern cars are using them again"},"content":{"rendered":"

How Turbochargers and Superchargers work and why modern cars are using them again.<\/h3>\n

Forcing life back into smaller engines<\/strong> Ever-tightening vehicle emissions regulations have led to manufacturers having to come up with a more complex way of reducing the amount of pollution coming from our car exhausts. One approach taken is what is often referred to as \u2018engine downsizing\u2019; engineering smaller capacity engines and using forced induction via turbochargers and superchargers to boost power output, thus enabling smaller engines to be used in larger cars. Both turbocharging and supercharging provide noticeable increases in performance, although there is no definitive answer as to which provides the best solution. Turbochargers work by having the exhaust gas from the engine\u2019s combustion cylinders directed into a turbine that spins at a very high speed. On the same shaft as the turbine is a compressor wheel that is in the inlet of the engine. This forces more air into the cylinder for the combustion process. \"HowThis method has two main benefits. The first is to help improve fuel economy while allowing the smaller engine to provide similar levels of power typically seen in larger capacity engines. When less power is required from the engine, usually when engine speeds are lower, the turbocharger is only partially or not in use. Where this often occurs is when driving in urban situations where the speed is lower, therefore increasing the levels of fuel economy, as it is effectively operating as a smaller engine. \"How Audi R18 e-tron quattro: VTG turbocharger ? the variable turbine geometry (VTG) improves responsiveness. A familiar trait of older, less advanced turbocharged engines, was an occurrence referred to as turbo lag. This related to the delay in power delivery between the throttle being pressed by the driver and the turbocharger spooling up and delivering the greater power. Turbocharging has enabled manufacturers to develop engines as small as 1.0-litre in capacity with as much as 140hp. The technology also features in almost all diesel engines now. Usually, these have a higher engine capacity, between 1.5- and 2.0-litre, although multiple turbochargers are often now used in larger diesel engines to deliver impressive performance levels with zero lag. When two turbochargers are used, it’s quite common that one will be smaller to spin up quickly and one larger that takes over as engine speed increases. \"How 3.0 TDI with electric biturbo Advanced systems now even use smaller, electrically powered equivalents, to eliminate any noticeable effects of lag. The result is an increase in the levels of power that are available virtually from idle. Anti-lag systems in various guises have been in use in Motorsport for decades so it’s not new technology it has just become more refined. As you can see from the two anti-lag solutions in the videos below, neither are really suitable for road use!