Research device and control method for mixing characteristics of natural gas/diesel dual fuel injection

Abstract

The invention belongs to the field of internal combustion engine researches and discloses a natural gas / diesel oil dual fuel injection mixed characteristic research device and a control method thereof. The device comprises an injection combiner, a constant volume bomb, a natural gas injector, a diesel oil injector, a gas supply system, an oil supply system, a computer I, an ECU, a laser, a synchronizer, a camera I, a camera II, a reflector and a spectroscope. The natural gas injector and the diesel oil injector are fixedly installed in the injection combiner. The injection combiner is installed at the top of the constant volume bomb. The gas supply system is connected with the natural gas injector. The oil supply system is connected with the diesel oil injector. The ECU controls the natural gas injector and the diesel oil injector to be started or stopped. The computer I controls the laser, the camera I and the camera II to work synchronously through the synchronizer. According to the natural gas / diesel oil dual fuel injection mixed characteristic research device and the control method thereof, dual fuel injection mixing is achieved, clear mist form images are captured through a laser induced fluorescence technique, and a heating unit, a temperature and pressure sensor and an electromagnetic flowmeter are arranged in a pipeline so as to research the influence of the state of fuel on the mist mixed characteristics.

Description

technical field [0001] The invention belongs to the field of internal combustion engine research, and in particular relates to a research device and a control method for natural gas / diesel dual fuel injection mixing characteristics. Background technique [0002] With the expansion of industrial consumption and living consumption, my country's demand for energy continues to rise, while the problems caused by the over-exploitation of fossil resources, such as diesel and gasoline, have become increasingly prominent. The deepening of energy and environmental crisis has seriously affected the healthy and rapid development of my country's economy and society. In addition, my country's environmental protection regulations have been continuously upgraded, and the National IV emissions have been fully implemented, which has a great impact on the diesel engine industry. It can be seen that the development and utilization of clean energy is imperative. As a clean alternative fuel, na...

AI Technical Summary

Problems solved by technology

However, the injector requires extremely high machining accuracy and complex structure, which is difficult to achieve in China at present.

[0003] The dual-fuel injection device and method mentioned in the above-mentioned patent cannot realize the direct injection technology of diesel pilot natural gas cylinder

At present, the core of this technology is monopolized by foreign companies, and the country is still in a technical blank

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