当代先进技术（Contemporary advanced technology）.docVIP

当代先进技术（Contemporary advanced technology） Take you really to understand the car - the introduction of contemporary advanced technology With the rapid development of modern automobile industry, its technical content is getting higher and higher. Nowadays, the manufacture and use of automobiles have been applying a great deal of sophisticated science and technology, including advanced technologies in the military field of the last century, and also applied to automobiles. Because the fields involved are very large and complex, this paper introduces only some advanced science and technology which are applied to modern automobiles. Electronically controlled fuel injection engines The fuel injection engine is mainly composed of the engine control computer Electronic Control Unit (hereinafter referred to as ECU) to control the work, the computer here is our daily life with the computer, but highly integrated single chip, generally located below the central control panel inside the cab or seat. ECU in general, the amount of fuel injected depends on the amount of air pumped by the engines air flow sensor. The specific work principle is outlined in the engine working principle, which is no longer described here. What you need to know is the direct injection technology of fuel oil cylinder developed by the Mitsubishi Co in Japan. It is called GDI for short. GDI technology is directly on the cylinder head device of a jet nozzle, directly injecting fuel into the combustion chamber, with special geometric design at the top of the piston, the formation of swirl combustion chamber, can obviously help promote uniform mixing of oil and gas, but also because it is after the fuel is injected into the compression stroke is complete, in the compression ratio the set also has more space than ordinary engine. But because the injection pressure is higher, it makes the nozzle and the oil supply design need a higher level of technology, making the cost higher, the current application is not a