With the continuous progress of technology, Europe's strict emission restrictions, turbo models have become the mainstream of the market. But the question is, many people have doubts, turbocharged engine, really life short? Is the maintenance cost really high?
How does the turbocharger work?
The turbocharger increases the intake air by compressing the air and uses the exhaust inertia of the engine to propel the turbine in the turbine chamber. The turbine drives the coaxial impeller, which feeds the air from the air cleaner pipe. The pressurized into the cylinder. As the engine speed increases, the exhaust rate and turbine speed are also synchronized faster, the impeller to compress more air into the cylinder, the air pressure and density increases can burn more fuel, the corresponding increase in fuel and adjust the engine Speed, you can increase the output power of the engine.
The advantages of turbocharging
The biggest advantage of turbocharging is that it can significantly increase the engine's power and torque without increasing the engine displacement. The turbocharged engine is not only fuel efficient, but also reduces CO, CH and PM in the emissions.
Turbocharged engine structure is simple, easy to install, wide technical adaptability, from low to high speed, from two strokes to four strokes, small bore to large bore can be applied. The noise of the turbocharged engine is smaller than that of a naturally aspirated engine.
The drawbacks of turbocharging
1, speed problem
It is true that turbocharging does improve the power of the engine, but its shortcomings also have a lot, the most obvious of which is the power output response lag. Due to the inertia of the impeller on the throttle sudden change in response, that is from your big step on the throttle to increase the power to the impeller rotation will be more air into the engine to obtain a greater power between the existence of a time difference. It is
With the continuous progress of technology, Europe's strict emission restrictions, turbo models have become the mainstream of the market. But the question is, many people have doubts, turbocharged engine, really life short? Is the maintenance cost really high?
How does the turbocharger work?
The turbocharger increases the intake air by compressing the air and uses the exhaust inertia of the engine to propel the turbine in the turbine chamber. The turbine drives the coaxial impeller, which feeds the air from the air cleaner pipe. The pressurized into the cylinder. As the engine speed increases, the exhaust rate and turbine speed are also synchronized faster, the impeller to compress more air into the cylinder, the air pressure and density increases can burn more fuel, the corresponding increase in fuel and adjust the engine Speed, you can increase the output power of the engine.
The advantages of turbocharging
The biggest advantage of turbocharging is that it can significantly increase the engine's power and torque without increasing the engine displacement. The turbocharged engine is not only fuel efficient, but also reduces CO, CH and PM in the emissions.
Turbocharged engine structure is simple, easy to install, wide technical adaptability, from low to high speed, from two strokes to four strokes, small bore to large bore can be applied. The noise of the turbocharged engine is smaller than that of a naturally aspirated engine.
The drawbacks of turbocharging
1, speed problem
It is true that turbocharging does improve the power of the engine, but its shortcomings also have a lot, the most obvious of which is the power output response lag. Due to the inertia of the impeller on the throttle sudden change in response, that is from your big step on the throttle to increase the power to the impeller rotation will be more air into the engine to obtain a greater power between the existence of a time difference. It is also necessary to increase or decrease the engine power output by adjusting the turbocharger for at least 2 seconds.
2, to speed up the problem
With the advancement of technology, although the use of turbocharged manufacturers are in the turbocharger technology to improve, but because of the design principles, so the installation of the turbocharger car driving up feeling and large displacement of the car There is a certain difference.
How long is the life of the turbocharger?
In fact, for the turbocharged engine, the engine itself is relatively long life, said here is the main turbocharging system, the system because of high temperature and pressure work, so the life of the early product life than the engine part of the slightly shorter, Generally 8 to 10 million km! At present, turbo technology has been very mature, and now the life of turbocharged engine can be maintained at around 250,000 km. Such as Citroen 1.6T design life of about 10 years 24 million kilometers, GM 1.4T design life is about 250,000 km.
The turbocharger is a high temperature component because the gas that drives it flows directly from the exhaust gas from the cylinder at temperatures up to 900 ° C to 1000 ° C and at full load, the turbine can run at speeds of up to 180 ° C per minute Such as the harsh working conditions of the turbine will have some impact on the life of the engine. But did not imagine so serious, the engine ontology, or quite anti-resistance.
Turbine at such a high temperature but also to do such a high-speed operation, it requires particularly efficient and stable lubrication conditions. But also in high temperature and high pressure environment, the supercharger of the various components and lubricants must have good high temperature resistance and sealing, so the turbocharged engine should choose high temperature, good oxidation of high quality oil. At present, the vortex increase part of the general 10Wkm before no major maintenance, only need to do maintenance on the line, 10Wkm after the start of maintenance, relative to the self-priming engine, the maintenance costs began to reflect.
Turbo life to the engine problems?
There is a misunderstanding, the engine life to, not to say that the engine has been used rotten, and here refers to the "life" is the aging life of the turbine blades, more than this time, the efficiency of the turbine will be worse, can continue to use. And if you maintain good, or use properly, the life of the turbine blades will be further extended, the engine will not be damaged.
As for the turbocharged engine life, the master felt that the specific have to see the owner of the usual use and maintenance, some people open tens of thousands of kilometers will be a problem, some people open to the scrapped will not be a problem, or to pay attention to normal Car habits.
What about the turbocharger?
1, good oil is very important
As the turbocharger in the use of the process of high temperature, and its structure is rather special, so the oil selection has special requirements. Ordinary gasoline engine models used in the maintenance of oil can not meet the requirements of the use of turbocharged models. So in the maintenance process must use the turbocharged vehicle dedicated oil, do not greedy small cheap.
2, cleared carbon
As many cases in the city road driving "T" car turbocharged system does not play a big role, long-term traffic jam may produce carbon deposition. Coke too much, both affect the engine work, but also easy to endanger the turbocharging system. The proposed owners in the 20,000 to 30,000 kilometers during the maintenance of vehicles for the removal of carbon deposition.
3, keep the turbine clean
The biggest feature of the turbo engine is the high power, low fuel consumption, which relies on its sophisticated design and manufacturing process, but also determines its harsh working environment.Therefore, it is very clean cleaning requirements of lubricants, any Impurities and parts of the friction damage are very large. Such as large particles of pollutants in the engine speed of 4000-6000 turn in the case, will make the neck, cylinder wall, bearing surface quickly pulled into strips; small particles of pollutants to form the surface of the machine lin, In the case of high-speed operation prone to fragmentation.
