Engines HYUNDAI D6AC,D6CA,D6CB,D6CC,D6AB,D6AU,D6AV,D6HA,D6GA,D6CG
Diesel HYUNDAI engines for trucks as any others have to meet constantly growing ecological requirements.
The main power range of the Hyundai engines used by heavy trucks makes from 250 to 500 h.p. and more. The producer of Hyundai trucks prefer to use series of the engines unified on a design and the sizes of cylinders (D6AC,D6CA,D6CB,D6CC,D6AB,D6AU,D6AV,D6HA,D6GA,D6CG,D8AB,D8AY,D8AX,D6DA,D6DB). At Hyundai firm is it is to six - both eight-cylinder V-shaped and line engines with cylinders about 2 l everyone. V-shaped six-cylinder Hyundai engines develop power from 320 to 456 h.p. depending on modification.
from factors on which Hyundai engine capacity depends, the air consumption is odny. A turbocharger – the reliable, well proved instrument of exact regulation of a consumption of air. For obtaining the necessary power it is necessary to give strictly dosed amount of fuel to a certain amount of air. The pressure in the combustion chamber is higher, the Hyundai engine capacity is more. The maximum value of power thus is limited only to admissible pressure in the combustion chamber of the diesel engine.
Sounds simply and actually everything was very easy till the moment when environmental standards of Euro 1 and other standards for toxicity of the fulfilled gases (FG) came into force. The matter is that with increase of value of pressure temperature of combustion increases in the combustion chamber and the content of oxides of nitrogen (NOx) in OG raises. To the contrary, the pressure in the combustion chamber, the less temperature more content of hydrocarbons (SN) in OG is less. Thus the amount of CO carbon monoxide and soot which contents is traditionally expressed in number of parts on one million (Parts per Million, PM) or in mg/m3 increases. To lower the maintenance of toxic components in OG, designers of Hyundai engines increase amount of air in fuel-air mix. Ideally low toxicity of OG is reached when comes to the combustion chamber air 20% more, than fuel. To consider all these factors, and also to reduce fuel consumption today possibly, using electronic injection of fuel with a high pressure (D6CA,D6CB, D6CC-motors Hyundai CRDI) Electronic system of injection rather precisely operate its beginning, duration and other parameters.
Single-row engines of the Hyundai company with a working volume from 7,8 to 12,9 l develop power in the range from 245 to 545 h.p. depending on modification (D6AC,D6AB,D6AU,D6AV,D6HA,D6GA)
the Maintenance of NOx and CH in the fulfilled gases directly depends on parameters of working process in the engine.
Here at least that fact can be an example that because of increase in the beginning of injection on 1 ° on an angle of rotation of a cranked shaft the maintenance of NOx in the fulfilled gases can on rise for 5%, and the maintenance of SN to increase by 15%. (Except constructive methods of decrease in toxicity of OG there are various methods of the subsequent processing of OG – use of catalytic converters, black filters, recirculation of the fulfilled gases and fall of temperature of air on an admission, but in this article we won't consider it.) Designers of engines seek to consider such difficult dependences at their development: carefully the combustion chamber form on what toxicity of OG and fuel consumption substantially depend is selected, select the optimum volume and the sizes of cylinders.