What is the maximum displacement of domestic engines?

[WillowAnn]

The maximum displacement of domestic engines is 3L. Displacement and automobiles: The space volume that the piston passes through when moving from the top dead center to the bottom dead center is called the cylinder displacement; if the engine has several cylinders, the sum of the working volumes of all cylinders is called the engine displacement. It is generally expressed in liters (L). Engine displacement is one of the most important structural parameters, which can represent the size of the engine better than the cylinder diameter and the number of cylinders. Many indicators of the engine are closely related to the displacement. Displacement classification: The classification of Chinese cars is determined by the size of the displacement. The displacement of mini cars is less than or equal to 1.0L; the displacement of ordinary cars is in the range of 1.0-1.6L; the displacement of intermediate cars is in the range of 1.6-2.5L; the displacement of mid-to-high-end cars is in the range of 2.5-4.0L; the displacement of high-end cars is greater than 4.0L.

[MacBarrett]

I remember when I used to drive trucks for long-distance hauls, I heard that the largest displacement of domestic engines was a 6.6-liter diesel engine, which was used in Weichai's WP17 series, mainly installed in large trucks or buses. The horsepower was really impressive, making it very powerful for hauling goods and even handling mountain roads with ease. However, with larger displacement comes higher fuel consumption, so for daily use, a car with around 1.5 liters is sufficient—both fuel-efficient and quiet. Domestic engines have made significant progress in recent years. They were often criticized for being technologically backward in the past, but now being able to produce such large-displacement engines shows that industrial capabilities have improved. When choosing a car's displacement, it's important to consider practical needs: large displacement is suitable for commercial or off-road use, while family cars don’t need to pursue this.

[HZoe]

I enjoy studying automotive technology in my spare time. The largest displacement engine produced domestically is the Weichai WP17 series 6.6-liter diesel engine, commonly used in heavy trucks or construction vehicles. Displacement refers to the cylinder working volume, which directly affects torque and power. The 6.6-liter engine can deliver enormous torque, making it suitable for heavy-duty applications. Compared to gasoline engines, diesel engines offer better fuel economy but are noisier. When selecting an engine, factors like fuel efficiency and emission standards should also be considered. Currently, domestic brands are catching up with international standards. These large-displacement engines play a crucial role in urban transportation, improving logistics efficiency.

[OCamilla]

From an automotive knowledge perspective, domestically produced engines with a maximum displacement of 6.6 liters are diesel models, such as Weichai products used in commercial vehicles. Displacement size affects power performance, with larger displacement engines being more durable but consuming more fuel and requiring regular maintenance. This is crucial for long-distance freight transport as it can help save costs. The technological upgrades in domestic production are noteworthy.