The same 2.0T engine, what is the difference between the high-power and low-power versions?You will know by comparison

We often see that a car uses the same displacement engine, but it is divided into several powers, such as Audi A4L and BMW 3 series. An engine has three powers: high, medium and low. The low-power version is jokingly called Turbo decompression version, so why should car companies divide high and low power? Are these different power engines just the difference of software tuning? How to divide an engine into high and low power? In fact, not many people imagine buying a low-power engine, brushing an ECU can become exactly the same as high-power, we can think about it, if we are a car company, we have already divided the high and low power, why the car company is not low Power engines use some lower-cost hardware, even if one engine can save tens of dollars, 100,000 units? One million units? Therefore, high and low power engines are not all tricks of software tuning. At present, car companies mainly use these methods to build high and low power engines. 1. Realize different power through different hardware structures The most typical is the BMW engine. The 320, 325 and 330 versions of the BMW 3 Series are actually different in hardware. Doing so will actually bring greater difficulty to R&D and manufacturing. But the reason why BMW does this is to make Different engine products adapt to different groups of people, low-power engines achieve better fuel economy, high-power engines achieve better power performance, like the BMW 3 Series B48 engine, different power versions of the cooling system, intake manifold Electrical appliances such as mufflers, motors, starters, fans, etc. are different. It is impossible for a low-power engine to simply brush the ECU to achieve the same effect as high-power. 2. Different power can be achieved through different superchargers Of course, there are also car companies who choose not to work hard on the hardware structure, but to change the type of supercharger. Volvo is the most slippery player in this regard. Various mechanical supercharging, turbocharging and dual supercharging. For example, Volvo XC90, the B5 version is turbocharged, and the B6 version is supercharged. 3. Realize different power through ECU control There are a few engines that achieve high and low power through ECU control. The main ones are the 1,4T engine of Volkswagen EA211, and the Cadillac LTG 2.0T engine. However, there are almost no models on sale at the moment. Divided into high and low power versions. Why do car companies have to divide high and low power? So the question is, why should an engine be divided into different powers? Isn’t it troublesome? Why not directly use engines with different displacements? 1. Cost saving You can calculate an account, develop three products, and build three products with one product through subtle differences. Which one is more costly? One engine is divided into three powers, which can greatly save research and development costs, especially for small factories like Volvo, one engine saves more money in the world. 2. Convenient maintenance An engine is divided into different powers. Another advantage is that the cost of maintenance is lower, because after all, it is an engine as a model. Most of the parts can be used in common, and the training of after-sales maintenance personnel can save money. Less expenses. 3. Create product sequence In the past, the Audi A4L still had a 1.4T version, but now the entire system is 2.0T. For consumers, 300,000 to buy a 1.4T engine is emotionally difficult to accept, but now the low-power version of 2.0T, Although it can only output 150 horsepower, the parameters are exactly the same as the 1.4T engine, but at least it is a 2.0T, through the high, medium and low matching, so that different consumers can better choose the version that suits them, and increase the sales of the product. In summary, dividing an engine into different powers is a somewhat opportunistic way, but it is a very good way to save costs. Whether you are pursuing power or fuel consumption, there is always one that suits you