Abstract
Abstract Vehicles equipped with an LPG retrofit system are always started on gasoline. Therefore, part of the vehicle's annual mileage will be run on gasoline. This article describes the results of tests conducted on a vehicle equipped with a propane-butane gas retrofit system (LPG system) regarding gasoline consumption in the LPG mode depending on the temperature at which the engine is started. The research was carried out on a passenger car from the C segment with an engine with indirect gasoline injection system. Based on these studies, the analysis of various vehicle use scenarios and the related gasoline consumption in relation to LPG consumption was made.
Highlights
Vehicles equipped with LPG systems are always started on gasoline
This article describes the results of tests conducted on a vehicle equipped with a propane-butane gas retrofit system (LPG system) regarding gasoline consumption in the LPG mode depending on the temperature at which the engine is started
Based on the measured scatter of the measurement results the uncertainty of the time of switching the fueling from gasoline to LPG, the share of gasoline consumption in the total fuel consumption and the distance traveled when running on gasoline was calculated
Summary
Vehicles equipped with LPG systems are always started on gasoline. Two installation operation modes can be distinguished in those vehicles: gasoline mode and LPG mode. Depending on the aforementioned parameters and the length of a single trip and its profile, the consumption of This is important, for example, when estimating emissions from road transport, especially when we do not have data on fuel consumption by individual vehicle categories. One of them may be the so-called “Bottom up” method [2] In this method, the sum of estimated values is compared with the data on the total consumption of a given type of fuel by means of road transport in the country. The time after which the engine started to be supplied with LPG was considered the time elapsed from starting the engine until the voltage appeared on the contacts of this electrovalve, adding the time of switching the LPG system from gasoline to LPG This time was set in the LPG controller and amounted to 3.1 seconds (the sum of the switching time and the pressure regulator filling time)
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