DISTRIBUTED ENRICHMENT OF AIR CHARGE OF AUTOMOTIVE ENGINEERING DIESELS WITH LIQUID ACTIVATORS

Abstract

To intensify the working process of diesel engines of automotive engineering, to improve power, fuel, economic and environmental performance, a distributed method of enriching the air charge in the intake stroke with a 10 ... 20% dose of liquid activator (gasoline, alcohol, kerosene, etc.) is proposed. To implement this method, an electronic system of distributed enrichment of the diesel air charge was developed. It contains a filter, an electric pump, electromagnetic nozzles, a ramp, a pressure regulator, a fuel consumption sensor (a meter of motor fuel mass flow), a phase sensor and an electronic control unit (ECU). The general arrangement of the main system units and the principle of their operation are described. The formulas for programming the ECU that controls the operation of electromagnet nozzles are given. The results of experimental studies found that with distributed enrichment of the air charge of a tractor diesel D-243-648, depending on the activator dose and load-speed mode of operation, the activator cycle supply can be from 1 mg / cycle to 13 mg / cycle, while the duration of control pulses generated by the ECU varies from 0.27 ms to 3.5 ms. The developed system provides high-quality distribution of the activator-air mixture across the cylinders of a diesel engine in the intake stroke and automatic metering of the activator depending on the load and speed modes of the engine.