What's the difference between a car with a T and a car without a T? Will it save fuel?

T means that this car engine is equipped with a turbocharger.

The difference between a T-car and a T-car is as follows:

1, fuel consumption

T's engine, that is, the engine with turbocharging, consumes a little more fuel than the engine with the same displacement, style and structure.

2. Strength

The output power with T is much higher than that of the engine with the same displacement; Therefore, it is the highest in terms of rising power;

3. Torque

Under the premise of constant displacement, the power and torque of the engine can be greatly improved, that is, 1.8T can be equivalent to 2.4L, and the fuel combustion is more complete.

Turbocharger is actually an air compressor, which increases the air intake by compressing air. It uses the inertia impulse of the exhaust gas discharged by the engine to push the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which pressurizes the air sent by the air cleaner pipeline and sends it to the cylinder.

When the engine speed increases, the exhaust gas discharge speed increases synchronously with the turbine speed, and the impeller compresses more air into the cylinder. With the increase of air pressure and density, more fuel can be burned, and the output power of the engine can be increased by increasing the fuel quantity and adjusting the engine speed accordingly.

Extended data:

Structure principle of turbocharger

The first exhaust gas turbocharger is mainly composed of pump wheel and turbine, and of course there are other control components. Pump wheel and turbine are connected by shaft, that is, rotor. The exhaust gas from the engine drives the pump wheel, which drives the turbine to rotate, and the turbine rotates to pressurize the air intake system.

The supercharger is installed on the exhaust side of the engine, so the working temperature of the supercharger is very high, and the rotating speed of the supercharger rotor is very high, which can reach hundreds of thousands of revolutions per minute. Such a high speed and temperature make the ordinary mechanical needle roller or ball bearing unable to work for the rotor, so the turbocharger generally adopts full floating bearing, which is lubricated by oil and cooled by coolant.

In the past, turbochargers were mainly used in diesel engines. Because gasoline and diesel are burned in different ways, the turbocharger used in the engine is also different.

A gasoline engine is different from a diesel engine. It is not air that enters the cylinder, but a mixture of gasoline and air, which is easy to explode when the pressure is too high. Therefore, the installation of turbocharger must avoid deflagration, which involves two related issues, one is high temperature control and the other is ignition time control.

References:

Turbocharger-Baidu Encyclopedia