Measure of the volumetric efficiency and evaporator device performance for a liquefied petroleum gas spark ignition engine

Masi, Massimo; Gobbato, Paolo

doi:10.1016/j.enconman.2011.11.030

Cited by 36 publications

(27 citation statements)

References 9 publications

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“…In fact, the need for engine power is more than the fulfillment of low emissions. For example, tests performed by Massi and Gobbato, FIAT 838 A-1.000 engine describe the actual AFR is lower than stoichiometric AFR (15.7) for the most of the engine load, from 1000 rpm to 7000 rpm [18]. In the other case, there is significant variation in vehicle emissions during acceleration, deceleration, and cruising [19,20].…”

Section: Introductionmentioning

confidence: 99%

AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC)

Setiyo

Munahar

2017

J. Mechatron. Electr. Power Veh. Technol.

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During deceleration, continuous fuel flows into the engine not only causing over fuel consumption but also increasing exhausts emissions. Therefore, this paper presents a simulation of AFR and fuel cut-off modeling in the LPG-fueled vehicle using Fuzzy Logic Controller (FLC). The third generation of LPG kits (Liquid Phase Injection, LPI) was chosen due to its technological equivalency to EFI gasoline engine and promising to be developed. Given that the fuel system control is complex and non-linear, FLC has been selected because of simple, easy to understand, and tolerant to improper data. Simulation results show that the AFR and fuel cut-off controller able to maintenance AFR at the stoichiometric range during normal operation and able to cut the fuel flow at deceleration time for saving fuel and reducing emissions.

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Section: Introductionmentioning

confidence: 99%

AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC)

Setiyo

Munahar

2017

J. Mechatron. Electr. Power Veh. Technol.

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“…Therefore, the potential cooling effect from LPG vaporizer can be estimated by enthalpy values (h) as shown in Figure 6. LPG flow rate through a 1998 cm 3 engine running at 10006000 rpm is 17 g/s (Masi & Gobbato, 2012). Assuming that the heat released from the air stream is equal to the heat absorbed for evaporated LPG, the potential cooling effect can be calculated through the equation: (2) is the potential cooling effect in kW, is LPG flow rate g/s, is the enthalpy in P 3 , T 3 (exit evaporator) in kJ/kg, and is the enthalpy in P 1 , T 1 (entering expansion valve) in kJ/kg.…”

Section: Effect On Cooling Effectmentioning

confidence: 99%

“…Initially, LPG vehicles produced lower power, ranging from 5% to 20% of the power produced by gasoline vehicles (Campbell et al, 2004;Ceviz & Yüksel, 2006;Watson & Phuong, 2007;Masi & Gobbato, 2012). Rapid research and development led to a significant reduction of these losses.…”

Section: Introductionmentioning

confidence: 99%

Characteristic of LPG Compositions in the Fuel Line during Discharging Process

Setiyo¹,

Soeparman²,

Hamidi³

et al. 2017

IJTech

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Research and development activities on Liquefied Petroleum Gas (LPG) vehicles have increased LPG engine performance to that of gasoline engines. LPG evaporation in the fuel system also has a potential cooling effect that can be taken advantage of. The results from previous studies, however, do not explain the level of fuel in the tank at the time of data collection. LPG is a mixture of several molecules which have different properties. This paper presents an investigation of LPG composition characteristics in the fuel line during the discharging process. Samples were taken periodically on the fuel line by special gas syringes. Afterwards, the samples were injected into the Gas Chromatography-Mass Spectrometry (GC-MS) device. This series of tests, which was conducted on lengthy LPG tanks, showed that the propane and butane 2-methyl molecules are unevenly dispersed during the discharging of the tank. However, this study found that a change in LPG composition during the discharging process does not have significant influence on the energy delivery and the potential cooling effect.

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“…(1) Figure 2 shows the steady state efficiency map of a hypothetical, 2L engine [20], [21], which has a maximum efficiency η e,max = 0.308 for an brake torque of 115 Nm at 2860 rpm. Starting from this operating point, the efficiency decreases as the brake torques increases mainly because the fuel/air ratio increases over its stoichiometric value, while the efficiency also decreases for lower brake torques because the engine is throttled.…”

Section: Series Hybrid Electric Vehicle Modelmentioning

confidence: 99%

Green driving optimization of a series hybrid electric vehicle

Lot

Evangelou

2013

52nd IEEE Conference on Decision and Control

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Abstract-This paper develops an indirect optimal control methodology to achieve green driving optimisation for series hybrid electric vehicles. Starting from a given vehicle mission, specified in terms of a road journey that has to be completed in a given amount of time, the power sharing among the powertrain sources and the vehicle speed profile along the journey are optimised and found. The scheme combines parametric modelling of the vehicle and powertrain together with computationally efficient optimal control software to provide an optimization strategy that works in real-time. Simulation results that demonstrate the success of the method and provide further insight into efficient driving, are presented.

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Measure of the volumetric efficiency and evaporator device performance for a liquefied petroleum gas spark ignition engine

Cited by 36 publications

References 9 publications

AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC)

AFR and fuel cut-off modeling of LPG-fueled engine based on engine, transmission, and brake system using fuzzy logic controller (FLC)

Characteristic of LPG Compositions in the Fuel Line during Discharging Process

Green driving optimization of a series hybrid electric vehicle

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