Abstract

The object of research is the multifunctional synthesis technology Avenir Gaz (of various levels of complexity), intended for converting transport diesel engines into spark-ignited gas internal combustion engines (ICE) for operation on liquefied petroleum gas (LPG). Investigated problem: the creation of an affordable synthesis technology in terms of complexity and price, which allows converting operating diesel engines into gas internal combustion engines operating on cheaper and environmentally friendly gas fuel - LPG. Main scientific results: Avenir Gaz synthesis technology (two levels of complexity, qualified as levels "A" and "B") for converting diesel engines into gas internal combustion engines is developed and created. It is shown that the conversion of diesel engines according to the Avenir Gaz synthesis technology is carried out on the basis of the developed electronic microprocessor control systems. And the basis of the control systems is the developed and manufactured two electronic microprocessor control units Avenir Gaz 37 (hereinafter – ECU Avenir Gaz 37). ECUs in accordance with the levels of complexity of synthesis technology are qualified as – ECUs Avenir Gaz 37 "A" and Avenir Gaz 37 "B". It is shown that Avenir Gaz synthesis technology of level "A" allows converting diesel engines into gas internal combustion engines with LPG supply through a gas-air mixer into the inlet pipeline. At the same time, the Avenir Gaz 37 "A" ECU, using the signal from the Hall sensor of the distributor, limits the maximum speed of the gas engine, thereby ensuring its safe operation. And the synthesis technology Avenir Gaz 37 of level "B" allows converting diesel engines into gas internal combustion engines providing group or sequential injection of LPG by electromagnetic gas nozzles (injection system of the Common Rail type) into the intake manifold in the area close to the intake valve. Area of practical use of the research results: converting diesel vehicles, including agricultural machinery (powerful wheeled and tracked tractors, combines, etc.) into spark-ignited gas combustion engines operating on LPG. An innovative technological product: Avenir Gaz synthesis technology, which allows converting the transport diesel engines in operation into gas internal combustion engines for operation on LPG. Scope of application of the innovative technological product: naturally aspirated and supercharged diesel engines with the number of cylinders from one to six, in-line and V-shaped, with a uniform alternation of working strokes.

Highlights

  • Materials and Methods According to the Avenir Gaz synthesis technology, the conversion of diesel engines is carried out on the basis of the created electronic control systems for gas internal combustion engines, which are based on electronic microprocessor control units

  • It should be added that the use of the Avenir Gaz synthesis technology for any of the levels of technology complexity requires a certain list of different types of work

  • The Avenir Gaz 37 “B” ECU performs such basic functions as: – providing group or sequential liquefied petroleum gas (LPG) injection; – regulation of the amount of starting gas fuel supply depending on the temperature of the engine coolant; – regulation of the rotational speed of the gas engine in idle mode, depending on the temperature of the coolant and the connection of additional devices; – limiting the maximum rotational speed of a gas internal combustion engine by forming an external regulatory characteristic

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Summary

Introduction

The object of research The object of research is the multifunctional synthesis technology Avenir Gaz 37, intended for converting diesel engines of vehicles in service into gas internal combustion engines (ICE) with spark ignition. Problem description It is known that in order to increase the share of alternative fuels in the total structure of fuel consumption of transport in order to reduce its operating costs, it is advisable to convert (re-equip) diesel engines into ICEs with spark ignition. The use of LPG in the conversion of diesel engines into gas internal combustion engines allows to ensure: a decrease in the level of harmful emissions of oxides and carbon dioxide, nitrogen oxides and particulate matter in the exhaust gases [2]. Diesel fuel is completely replaced by cheaper LPG

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