4 Cylinder Engines

According to the vehicle emission, 4 cylinder engine corresponds to 25 litres emission.
According to the engine arrangement, upright 4 cylinder engines are mostly used.

Compared with 6 cylinder engine and even above, 4 cylinder engines less relies on high speed. Therefore, they cost less fuel. Upright 4 cylinder engines are designed of easy structure and large space in engine room to ensure a good heat dispersing performance. Under the same or approximate emissions, the cylinder diameter of 4 cylinder engine is larger and the corresponding firebox area is also larger. The admission gear is easily arranged Cylinder body, cylinder cover and crank shaft all enjoy easy structures.

The common 4 cylinder engines make use of balancing shaft to improve stability. 4 cylinder engines equipped with balancing shaft can achieve the stable effect as 6 cylinder engines. In addition, the torque property of 4 cylinder engines is better. So they are more suitable for city zone.

Generally, 4 cylinder engines could use lower compression ratio, so economical low grade gas is commonly adopted. These products have strong universal property which is suitable for all the products below 2.5 litre emission. 4 cylinder engines are made by mature technology, easy structure and stable property.