Is the German car engine excellent or the Japanese car engine excellent?

Germany and Japan, as the strongest automobile engines in the world, are indeed comparable in some aspects and have their own characteristics, but it will be a thorny issue to tell the winner. It is even more difficult to judge the difference between its advantages and disadvantages according to subjective assumptions.

First of all, in the technical aspect of the engine itself.

* The world's leading engine technologies can be roughly summarized as follows: valve variable timing technology (VVT, including intelligent, multi-stage and continuous variable control), in-cylinder fuel direct injection technology (FDI), turbocharger technology, variable valve lift technology (divided into multi-stage and continuous controllable) and hybrid engines (such as Ford's ecoboost and Mercedes-Benz's DISEOTTO engine technology). Among them, variable valve lift technology is regarded as the most advanced single technology by the industry, and successful enterprises regard it as the competitive advantage and stunt secret of high-end products. So let's compare the application of this technology in German cars and Japanese cars. In 200 1 year, BMW took the lead in introducing the continuously variable valve lift technology of Valvetronic in the industry, and successively applied this cutting-edge technology to all BMW models except M3 and M6. Until today, its combination with dual VANOSE two-stage electronic valves is still BMW's strong ace technology. However, compared with Japanese brands, Honda, which has always been technically successful, actually succeeded in public relations earlier than BMW in the 1990s, and that is the famous VTEC series engine. However, because its variable valve lift technology only stays in the two-stage and three-stage multi-stage control stage, it can not realize the bidirectional continuous variable control of intake and exhaust section like valvetronic, although it can successfully improve fuel efficiency. Compared with ordinary engines, the power efficiency has been further improved, but it is still not as good as BMW's valvetronic. Until 2009, Honda's A-VTEC technology can realize continuous and controllable valve lift. But at the same time, BMW introduced the second generation of VALVETRONIC technology. So far, there are Nissan's VVEL, Toyota's VALVEMATIC, Honda's A-VTEC, Audi's AVS and BMW's VALVETRONIC, among which BMW and Nissan have achieved mass production and equipped their models.

Direct fuel injection technology (FDI) has been successfully adopted by many automobile manufacturers. Among them, Audi's FSI, Mercedes-Benz's CGI, GM's SIDI and Ford's ECOBoost engine are the most famous. But strangely, Japanese car companies are not very interested in direct fuel injection technology. Toyota, Honda, Nissan and other big companies representing Japan have not introduced this technology in engine import. It was not until the end of 2009 that Nissan released a new technology: multi-point direct injection technology of in-cylinder fuel. It is based on FDI technology, but it has been further upgraded through multi-point optimization in the form of direct injection, but it is still in the experimental stage. Speaking of Japanese Nissan brands, as we all know, the VQ series engine family has been ranked in the Ward 10 excellent engine list for 14 years in a row.

* The most famous turbocharger is Audi EA series engine, but as a power superposition technology (auxiliary technology) widely used in the world, it is difficult to distinguish it on paper. If a detailed comparison is made, the author suggests referring to the performances of various automobile manufacturers in various competitions, such as F 1 and 24 Hours of Le Mans. To sum up turbocharging technology, German and Japanese have their own advantages, and Germany, as an old supporter of turbocharging technology, has a better technology. Only in F 1, Honda and Toyota, as one of the few engine suppliers, can't be underestimated.

* Compared with turbine technology, supercharging technology is less used, and few Japanese car manufacturers are involved because of its complex and precise structure. The well-known supercharged technology is Audi's 3.0T supercharged engine, Mercedes-Benz 200K series 1.8L supercharged engine equipped with Roots supercharger, and 6.2LV8LSA supercharged engine on the new Corvette.

Secondly, it is the difference in training.

* Due to national conditions and cultural differences, Japanese engine training pays more attention to practicality and economy. But there are also many positive people, such as GTR Ares series, Lexus LF-A supercar and Honda NSX. Of course, not to mention the engine performance. Needless to say, EA888 and EA11series turbocharged models A0, A and B launched by Germany show the sports genes in their bones, but it does not mean that German cars should not be economical if they want to exercise. German supercars are nothing more than Gumpert Apollo series, Porsche, AMG, M Power, RS/S series and so on.

According to the world engine list in 2009, Toyota 1.0L double VVT-i is on the list, and most of the other 1 1 award lists are divided by German brands. Therefore, in terms of low-displacement engine technology, Japanese engines have great advantages, but due to high-end high-displacement engines, Japanese engines are difficult to stand up to obvious advantages; German car engine technology is more balanced, has the strength to control high-end engine technology, and can lead the world's top engine technology. Here, the author believes that BMW is indeed a veritable global engine technology leader!

By the way, my home is an American car!