Abstract
The article presents the results of studies of energy, environmental and fuel efficiency indicators of a passenger car with a gasoline injection system. The engine is equipped with a device additionally supplying liquefied petroleum gas (LPG) and it has an ignition timing variator (ITV). As a result of research, an improvement in the fuel efficiency of a car in thermal equivalent was found when the engine was running on LPG and a slight increase in energy performance was observed. Emissions of pollutants with exhaust gases change in different ways: emissions of carbon monoxide practically do not change, emissions of hydrocarbons and nitrogen oxides are growing, carbon dioxide emissions from LPG operation are reduced, socio-economic damage when the engine is running on LPG is also reduced.
Highlights
One of the directions of expanding the fuel base of road transport is the use of liquefied petroleum gas (LPG) along with gasoline and diesel fuel
Among the ways to increase the use of positive qualities of LPG, which would not affect the performance of the basic gasoline supply system and do not require complex design changes, is the installation of modern gas cylinder equipment, which cooperates with the standard engine control system and allows precise control of gas supply to cylinders influencing ignition advance angle when the car is running on LPG
The energy performance of the engine increased slightly, at full load the engine torque during operation on LPG increased by about 3 %
Summary
One of the directions of expanding the fuel base of road transport is the use of liquefied petroleum gas (LPG) along with gasoline and diesel fuel. One of the ways to expand the use of LPG is to retrofit a car engine with a gasoline injection system to the LPG power supply system. Such equipment is especially widely used in privately owned cars. In [1] the retrofitting of a serial car with a gasoline engine to the liquefied petroleum gas supply system is considered as a medium-term perspective in the transition to sustainable fuels and transport. It is established that the conversion of cars for the use of LPG will reduce greenhouse gas emissions only if the use of additional means for the purification of exhaust gases is applied. The research is devoted to solve this problem and perform the investigation, the results of which are presented in the article
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