TDI is an abbreviation used to indicate those diesel engine models with direct injection and equipped with turbocharger. Owning a car with these features means reducing emissions, saving on fuel, having a higher performance in terms of power and high torque.
A Renault Megane 1.2 for sale need to increase awareness, TDI is a registered trademark belonging to Volkswagen. The operation of this system is very simple. The exhaust gas turbocharger supplies the engine with clean air, so the cylinders can fill completely. Following compression, a nozzle injects the fuel into the cylinders at a very high pressure.
Excellent engine management that reduces engine noise. Thanks to the structure of the particular internal geometries, and also thanks to the treatment of the exhaust gas, there is a considerable reduction in emissions.
Above Pressure
A used car buyer need to aware, it is necessary to make a further split between that for diesel engines and that for petrol engines. In the first, the fuel goes directly to the combustion chamber. It makes the car more performing, especially from a thermal point of view. In the case of high pressure injection, the engine achieves very similar performance to a modern petrol engine with turbocharger.
In direct petrol injection, the fuel is introduced into the combustion chamber at a pressure above bar. This process is more precise and does not depend on the opening of the valves. The mixture of air and petrol are optimal. With this type of injection, the enginesthey are more powerful, efficient and faster; it also allows gasoline savings. The turbocharger compresses and increases the air useful for combustion.
This leads to higher yields, higher torques and higher performance than naturally aspirated engines. The turbocharger consists of two rigidly connected turbines. One of these is activated by the flow of hot exhaust gases. The other turbine is called the compressor impeller, and after its activation there is a compression of the cold air coming from the outside.
This air is in turn cooled in an intercooler to reduce the volume and have more air, and therefore more oxygen that enters the combustion chamber. In addition to power, the turbocharger reduces emissions and allows the car to save fuel.
Rotational Velocity
The turbocharger is a system able to increase the volume of air present inside an engine so as to increase the performance of the engine itself. As the word, the turbocharger is formed by two components rigidly joined together: the turbine and the compressor . The first comes into operation with hot exhaust gases, the second operates simultaneously sucking the air to be compressed.
Besides, a Renault Megane 1.2 price dealer need to aware, too, the laws that govern the operation of the turbocharger are simple and intuitive. The engine because it functions properly need to be powered by a mixture consisting of fuel and air . Obviously, the greater the quantity of fuel used, the better the performance of the engine. Therefore, on the one hand it need to be increased in proportion to both the quantity of fuel used and the amount of intake air.
The compressor allows to raise the intake air pressure and then implement into the jet towards the combustion chambers. To do this, you will need a certain amount of energy, available by the turbine that recovers from the exhaust gas . Over the turbine works quickly and with less effort, it will pump the air from the moment that the machined air flow rate increases with the square of the speed of rotation. Please note, above discussion is for awareness only, not a expert opinion.