The new generation of engines is led by turbocharged + in-cylinder direct injection technology
At the 2009 Guangzhou Auto Show, many manufacturers have unveiled their latest models, starting in China, starting in Asia and even starting in the world. In view of the downturn in the world car market, this piece of cake in the Chinese market has obviously received more attention. As domestic consumers are more rational in buying cars, consumers cannot be conquered by slogans or concepts. In order to compete for this core market, more and more manufacturers have brought their most advanced models and the most advanced technology.
The engine has always been hailed as the "heart" and is the most important measure of whether a car is good or bad. In this auto show, Mercedes-Benz, BMW, Audi, GM and other manufacturers have launched their own housekeeping skills, the most notable of which is the ongoing in-cylinder direct injection and turbocharging technology. Among the new models exhibited, some of the high-profile models of Mercedes-Benz's E-class, BMW 760Li, BMW S6, Audi Q5, Cadillac SLS, Buick Encore, Regal 2.0T, Yinglang 1.6T, etc., either use direct injection in the cylinder or Turbocharged, or both.
What is the charm of direct injection turbocharging technology in the cylinder, which is favored by many top luxury brands and mainstream brands in the world, and regards it as a weapon to expand the territory?
In-cylinder direct injection technology (DirecTInjecTIon) refers to the engine technology that directly injects fuel into the combustion chamber of the cylinder. In previous gasoline engines, fuel was injected into the intake manifold. From carburetor to single-point electronic injection, multi-point electronic injection to multi-point sequential injection, the engine is constantly evolving, and in-cylinder direct injection technology is undoubtedly the latest achievement of humans in automobile engines.
Because fuel is accurately injected into the combustion chamber of the cylinder, direct injection in the cylinder can not only save fuel, reduce exhaust emissions, but also improve power performance. At the same displacement, the maximum power can be increased by 15%. At the same time, reduce engine vibration, the engine is more durable.
At present, the models that use in-cylinder direct injection technology in the world are mainly luxury cars, Ferrari F430, BMW 760Li, Mercedes-Benz CGIV6, Cadillac CTS, Saiwei and so on. In this auto show, the new Regal 2.0T and Yinglang 1.6T are the first to adopt This technology is a mid-to-high-end model.
The magic of turbo
Turbo is abbreviated as Turbo. Saab from Sweden applies the turbocharger to the car for the first time. This technology rewrites the traditional concept of "displacement determines power". Its arrival also announced a new car industry. The birth of the times. Turbo is commonly understood as an air compressor, which compresses air to increase the amount of air intake, so as to increase the power and torque of the engine and make the car more surging.
To improve car performance and increase car horsepower, however, the displacement and power of a car engine are proportional. To increase the output power of the engine, the most direct way is to increase the displacement of the engine. But while the displacement has increased, the precision, weight, and energy consumption of engine manufacturing have also been increased indefinitely. Supercharging technology is to resolve this contradiction, making it possible for car engines to obtain additional high-power power output.
Direct injection in the cylinder + turbo boost
It can be said that the turbocharged and in-cylinder direct injection technology is equivalent to injecting a cardiotonic agent into the heart of the car. The combination of the two represents the latest technology of the engine and becomes the most effective and direct high-efficiency solution for reducing emissions in the next ten years. .
From the current combination of turbocharging and in-cylinder direct injection technology, it is obvious that the maximum power of the engine has been improved. The Audi A42.0TTSI engine uses turbocharged in-cylinder direct injection technology to increase the maximum power peak by 37.5%, the Porsche 9113.6T turbocharged direct injection engine has a maximum peak of 47.7%, and the new Regal 2.0T has increased by 50%.
As the "heart" of the car, the technology of the engine has always been the core point of most concern. Judging from the current models expected to participate in the exhibition, the development trend of automobile engines towards high-efficiency power is to adopt the turbine and in-cylinder direct injection technology that have been matured by the current technology. The era of new-generation engines has just arrived.
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