The premise of this problem is that both displacements belong to the four-cylinder and basically belong to the small displacement. The 1.6T turbocharged engine is achieved on the basis of the original 1.6 engine displacement, in order to improve the fuel economy and the goal of large displacement and low power. As far as power is concerned, the displacement of 1.6T and 2.0 should be almost no difference. As for fuel saving, 1.6T may save a little bit. But definitely not very different. Because both types belong to four-cylinder small displacement, the difference in fuel consumption per 100 km is not more than 0.5 to 1.
If you want to consider the economics, turbocharged post-maintenance is at extra cost.
The effect of turbine characteristics on fuel consumption
Increase intake air lift power
The principle of a turbocharged engine is to use exhaust gas to drive the turbine to compress the intake air so as to increase the oxygen content in the combustion chamber. The combustion requires oxygen, and the oxygen will burn in the cylinder as the boost pressure increases. The same state occurs. Below, the greater the oxygen content, the better the combustion effect, and then achieve the purpose of power boost.
Turbine side effects
Turbocharging can easily extract power, but there are also serious side effects, sending more air into the cylinders, injecting more fuel, and producing more intense combustion, which of course can squeeze more powerful power.
At this time, the temperature inside the combustion chamber will rise even higher. The excessively high temperature combustion chamber will bring about a series of problems such as knocking. In order to suppress the knocking caused by high temperature, the ECU will generally instruct to inject more fuel. Incomplete combustion and fuel vaporization take away too much heat, which in turn causes excessive consumption of gasoline, which is one of the reasons that turbocharging does not necessarily save fuel.
The impact of driving conditions on fuel consumption
Why does the turbine save fuel?
Turbocharged engines will save fuel to some extent because turbocharged engines reduce pumping losses and can be directly inducted, which is simply the reduction of power wasted by the process of cylinder down and air intake.
Need to be stable
However, this also results in the fact that the turbocharged engine can only achieve fuel economy in a relatively stable state. If the brakes are constantly braked and stopped, the combustion efficiency of the engine will be reduced, and the turbine speed will constantly change, causing exhaust gas. Increased resistance will cause unnecessary power loss.
The “Consumer Report†has tested the fuel consumption of small-displacement turbocharged models. The test uses an EPA model that is closer to the real driving environment, that is, urban and high-speed tests are separated, fuel consumption is calculated according to a certain percentage, and the final verification is small. Displacement turbocharged engines are not fuel efficient.
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