IMPROVING ENERGETICAL AND ENVIRONMENTAL PERFORMANCE OF DIESEL ENGINES, BY THE EFFICIENCY SUPERCHARGE PROCESS

Abstract

The work objectives are part of current concernes of manufactures of automobile engines, wich aims to simultaneously improve the economy of environmental parameters and improving performance while maintaining the torque and power. The mechanical work product of a specific internal combustion engine is directly proportional to the mass of fuel burned in the cylinders, so is all the greater as the quantity of fresh charge is higher, which can be achieved by increasing its specific weight in the process supercharge. This work highlights the advantages and disadvantages use to supercharge, an aggregate type Comprex pressure waves, versus classical turbocharger. The main disadvantage is the difficulty of supercharge with Comprex granting of engine operating conditions. To optimize operation of Comprex entire range of engine speed and load, aggregate require auxiliary devices giving effective control over its rotor dynamic phenomena, which can be achieved by Comprex's involvement with a speed independent of engine. The proposed solution, which takes account of these considerations, is to lead aggregate Comprex, with a variable speed by an electric motor, which provides flexibility and control over an aggregate speed of charge at each engine operating mode. This paper presents torque versus energy parameters and the ecological economy and the engine C.I. 392 DT L4, Romanian construction, the supercharged turbocharged version offered by the manufacturer and the modified version of an aggregate type supercharger Comprex.