Is it true that Japanese cars are more fuel efficient? Why are Japanese cars more fuel efficient?

Many car enthusiasts may have heard that Japanese cars are more fuel-efficient. Is this true? In fact, most Japanese cars are really more fuel-efficient. Japanese cars pursue quality and fuel efficiency. After all, Japan is a country with scarce resources and has to save. Please read the following article for details!

Is it true that Japanese cars are fuel efficient?

Japanese cars are relatively fuel-efficient, but not all Japanese cars are fuel-efficient. Fuel efficiency is directly related to technology, but there are many factors that affect the fuel consumption of the entire vehicle. Technology accounts for a part, and the actual use of the vehicle also accounts for a part. Japanese cars do pay more attention to fuel consumption in their car-making concepts, and they have accumulated a lot of time and experience in pursuing lower fuel economy. This can be seen in the engines released by Japanese cars, which often bring out technical indicators that help reduce fuel consumption, such as thermal efficiency, compression ratio, dual cycle, compression ignition, high tumble, high-efficiency EGR, and dual injection (early VVT, VTEC).

Why are Japanese cars more fuel efficient?

Japanese cars pursue quality and fuel economy. After all, Japan is a country with scarce resources and has to save. In addition, Japan is a mountainous island country without many flat and straight roads, so the car does not require high top speed. Because of the special national conditions, Japanese cars are fuel-efficient, high-quality, and have average driving quality.

What fuel-saving technologies do Japanese cars have?

In terms of fuel economy, Japanese cars do have some impressive technologies, such as Honda's Earth Dreams technology, Mazda's Skyactiv technology, Toyota's TNGA architecture, Nissan's variable compression ratio technology, etc. All of them exist to improve fuel economy. There are also Toyota and Honda's hybrid and hydrogen fuel vehicles, Nissan's pure electric vehicles, and Mazda's second-generation Skyactiv compression ignition engine.

What are the characteristics of Japanese car engines?

From the engine level: the fuel consumption of the engine is directly related to whether the technology is advanced or not. It is relatively easy to improve the power of an engine. On the premise of meeting the hardware requirements, injecting as much fuel as possible and raising the upper speed limit can greatly improve the power performance, but the result is that the fuel consumption of this engine will definitely not be optimistic.

If an engine wants to keep the power unchanged while gradually reducing fuel consumption, it is a difficult problem. As fuel consumption gradually decreases, the fuel saving ratio will become smaller and smaller until some technological breakthroughs are achieved. Therefore, reducing fuel consumption is more difficult to achieve than increasing power. Reducing fuel consumption while ensuring its power, stability, emissions and easy maintenance is a test of the comprehensive R&D capabilities of car companies. At present, this is also the biggest goal that global car companies are committed to pursuing: reducing fuel consumption, and basically they have brought out their own unique skills.