Downsized Engine with Supercharger Reducing is Evolving In general, when engine displacement Downsized Engine Combines Low Fuel Consumption & Power lowers, maximum power is reduced. This is due to a decrease in the volume of air To upgrade an engine means increasing its size, right? No, bigger is not always better... being taken in and a reduction in the amount of fuel that can be burned at one On Wrangel Island in the Russian Arctic Sea they once found a engine becomes more efficient... and gas mileage is better. time. The supercharger in Nissan's downsized engine pumps pressurized air 2-ton woolly mammoth. Big enough but, considering that There is a "but." If we just decrease the cylinders and into the engine (see arrows). The engine mammoths excavated in other areas have been on average displacement, the engine power also goes down and you have can compensate for the decreased roughly 6 tons, actually really small. What could have caused a vehicle whose engine must work harder. The way the car volume of air taken in, enhancing the power of the engine and making driving these "dwarf mammoths"? We can explain them using J. Bristol moves, the characteristic "feel" of the model, is changed; it a more comfortable experience. Foster's "island rule" theory from 1964, which says that large becomes a different car entirely. What we want, then, is an animals get smaller to preserve the species when they are engine that has both superb fuel mileage and is also fun to living in an environment with limited resources. drive. Making this dream a reality is the concept behind the The same thing is happening with cars. Generally we tend to downsized engine. think an engine is evolving if it's getting larger but actually there is another approach. We call this downsizing. It's when The technology behind downsizing the engine displacement and number of cylinders are reduced. How to make an engine that is smaller but without losing its There are drivers, though, who like engines with lots of driving performance? Use a supercharger. A supercharger is displacement and many cylinders, so they aren't disappearing an air compressor that pumps pressurized air into an engine. for good. But make no mistake: Downsizing is now a major When we think of turbochargers or superchargers, we might trend in the industry. well have an image of technology that caters for guys who like fast cars. It's just for upping the power of a vehicle. It just Not simply being small guzzles gas purely in the name of speed. But actually the In recent years carmakers have been adopting multiple latest superchargers have enhanced turbine design and injected straight into the combustion chamber inside the strategies to make fuel consumption more efficient. And yet, lowered drag, and are in fact a core piece of technology cylinder. The merit of this is that then the gasoline vaporization in truth, just to make gas mileage better is a simple matter. All behind environmentally friendly and enjoyable driving. If we cools the temperature inside the cylinder. In supercharger or you have to do is cut the number of cylinders and the can utilize this kind of supercharger, it is possible to pump turbocharger engines, the intake temperature is prone to displacement in the engine. For example, you could change a 1.5-liters of air into a 1.2-liter engine. In other words, heating up due to the air that is pumped into the cylinders at Engines evolve for high fuel economy four-cylinder engine to three cylinders, and, say, 1.5-liter superchargers in a small engine can give us the driving high pressure. It would conventionally then have to control the while retaining driving pleasure displacement to 1.2-liters. If there are less cylinders and performance of a larger engine with more displacement. temperature by lowering the engine compression ratio. The "protagonists" of the eco car movement could be said to cylinder capacity, the engine becomes lighter, which directly Direct gasoline injection is also an important element of the Now let's look a little at this compression ratio. A gasoline be hybrids and EVs. There can be no doubt about this in the leads to lower fuel consumption. Also, if we consider that an downsized engine. In previous engines, fuel would be injected engine pressurizes a vapor mixed with fuel and air, which it long term, but the truth is that hybrid cars have complex engine is a reciprocating machine, reducing the cylinders also near to the cylinders and then be pumped in. On the other then ignites and burns off. Just like a water gun or airgun, mechanisms that make them expensive, while electric vehicles then reduces friction. In other words, the movement of the hand, with a direct injection gasoline (DIG) system, fuel is stronger pressurization (raising the compression ratio) means require specialist social infrastructures to be put in place combustion power increases. However, in a gasoline engine, before they become truly widespread. In addition, it is in the more pressure leads to the combustion temperature newly emerging nations that automobiles will be increasing in Supercharger What is a supercharger engine? becoming too high, giving you abnormal combustion and the coming years. If we consider the actual situations in each A supercharger engine is an engine fitted engine knock. country or region, surely it is realistic to say that for now, with a supercharger or turbocharger, an air Gasoline direct injection, though, has a cooling effect, so the gasoline engine vehicles will be mainly on the rise. compressor that pumps pressurized air supercharger can pump in lots of air (i.e. air-fuel vapor) and Our environmental concerns like global warming cannot only into an engine. An engine without a supercharger is known as a naturally burn off fuel while still keeping the temperature from going be tackled by the spread of hybrid vehicles and EVs. It is also aspirated engine. Superchargers turn too high. This means we can increase the compression ratio essential that we enhance gasoline engines in order to improve turbines and pump in air from outside. In this way, it can draw in more air than a without adverse effects. It was this deployment of a fuel efficiency. Nissan's downsized engine combining both low naturally aspirated engine with the same supercharger with a compatible direct injection mechanism fuel mileage and driving comfort is just one example of the displacement, and the amount of fuel that that allowed Nissan to enhance both fuel mileage and the innovative concepts surely soon to appear in the near future. Supercharger 3-cylinder engine Conventional 4-cylinder engine can be burned off at one time also increases. The result is more power. pleasure in the driving experience.