| Popis: |
In large metropolises, the dominant share of environmental pollution is caused by automobile transport. In this connection, Euro-5 and Euro-6 environmental standards were affected in many countries. These standards require the use of technological innovations leading to significant reductions in harmful emissions and fuel consumption. At the same time, internal combustion engines using gasoline and gas fuel are actively used. Significant reduction in toxicity can be achieved by switching off fuel supply and the valve mechanism, as well as additional loading of the remaining cylinders with the power of mechanical losses of the cylinders, which are cut out. To achieve the research objective, which is to develop a method for measuring the engine speed and load characteristics, we designed a device—a gasoline engine loader (DBD-3) also being a full-time electronic ICE control unit. DBD-3 implements the technique of a full and partial cylinder cutout impacting the impulses of electromagnetic injectors and high-voltage circuits of the ignition system. In addition, several algorithms for performing tests and adjusting modes for the purpose of the ICE system adaptability are incorporated in the DBD-3 functions. These developments can be used to measure the ICE speed and load characteristics, as they allow achieving a high accuracy in setting the load effects, their smoothness, technological sophistication of all the methods and modes. In the future, the developed diagnostic means can be used as a built-in diagnostic tool and recommended for a wide use in the automotive industry. |
