Foreign media analyze the reliability of small-displacement turbines and large-displacement naturally aspirated engines

Nowadays, the global auto market generally adopts the Downsizing strategy, replacing the previous large-displacement naturally aspirated engines with small-displacement turbine engines. However, "Carbuzz" recently conducted a reliability analysis of the two engines and found that there are obvious differences in the mechanical structure and working environment between the two. In fact, there are significantly more complaints about small-displacement turbines.

Small displacement turbines are more likely to have problems.

Naturally aspirated engines with large displacement have better durability.

According to the analysis of "Carbuzz", in order for a small-displacement turbine engine to achieve power output comparable to that of a large-displacement engine, it mainly uses the exhaust gas to drive the turbine and inject more air into the combustion chamber through the compressor, so that more fuel can be injected into the combustion chamber and generate more power. A 1.5-liter turbine engine needs to withstand higher combustion pressure and thermal load in order to be comparable to the power of a general 2.0-liter or 2.5-liter naturally aspirated engine.

At the same time, "Carbuzz" pointed out that the piston, connecting rod, cylinder wall, and cooling system of a small-displacement turbine must withstand higher working pressure. At the same time, the turbine system also means more corresponding parts such as the turbine body, bearings, and intake pipes. The more parts, the more links that can cause problems. Therefore, generally large-displacement naturally-aspirated engines are more durable.

However, this does not mean that small-displacement turbines are necessarily prone to breakage. It mainly depends on many factors, including whether the original manufacturer has set high-load pistons, connecting rods, cylinders and cooling systems for the engine from the beginning. If the settings are later purely to pursue high output, the durability will be weaker.

In addition, turbine engines rely more on engine oil for lubrication and heat dissipation, so oil quality, correct viscosity and replacement intervals are more important. Long-term delay in replacement will inevitably increase the risk of damage. In addition, you must also pay attention to the way you drive. Frequent violent driving when the engine has not reached normal operating temperature will also increase parts wear.