Effects of injection timing of methanol and LPG proportion on cold start characteristics of SI methanol engine with LPG enriched port injection under cycle-by-cycle control

Gong, Changming; Wei, Fuxing; Si, Xiankai; Li, Fenghua

doi:10.1016/j.energy.2017.12.013

Cited by 32 publications

(6 citation statements)

References 21 publications

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“…In the complete combustion, emissions from LPG engine are lower than gasoline engines because of low carbon content, i.e., three carbon and four carbon for propane and butane, respectively [5,6]. The resistance to the knocking of LPG is also better than gasoline due to higher octane numbers which reported of 105-106, depending on the composition [7][8][9]. However, because the energy content per unit volume is smaller than gasoline, the output power generated by the LPG engine is lower than the gasoline engine.…”

Section: Introductionmentioning

confidence: 99%

“…With continuous research activities, the output power and emissions from LPG vehicles can be improved at varying levels by adjusting the ignition timing, modifying engine component, and increasing the compression ratio [7], [14][15][16][17][18]. Other efforts to improve the output power and emissions are also done through LPG temperature management on the fuel rail [19] and modification on the valve lifter combined with injection duration management [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fuel as secondary refrigerant on LPG fuelled vehicle: A thermodynamics analysis

Setiyo

Waluyo

2019

JMES

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In LPG-fueled vehicles, there is a potential cooling from LPG evaporation in the fuel line. Cooling power is obtained without reducing the caloric value of the fuel supplied to the engine. Thus, LPG functions like a refrigerant before it is burned in the combustion chamber. Consequently, there is a change in fuel efficiency. Therefore, this paper presents a new thermodynamic analysis on LPG-fueled vehicles by harvesting cooling power in the fuel line. The total fuel efficiency is calculated by summing the indicated thermal power added by cooling power to the fuel energy supplied. The results show that the A/C system from the fuel line can increase the total fuel efficiency of 3.16%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fuel as secondary refrigerant on LPG fuelled vehicle: A thermodynamics analysis

Setiyo

Waluyo

2019

JMES

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“…The cold start issue results in the consequences that reverberate throughout the engine processes. The incomplete combustion due to the cold starts leads to decreased power output, compromised efficiency of fuel and increased emissions, which act as a counter to the objective of achieving sustainable transportation [43]. The SI engines, as a result, may experience rough idling, misfires or hesitation till reaching the desired operating temperature, thereby, leading to discomfort for the driver as well as significant wear on the engine components.…”

Section: Cold Start Issuementioning

confidence: 99%

Core Challenges and Prospects of Methanol Utilization, Prediction and Optimization for Sustainable Environment

Usman,

Kashif Jamil,

Hanif

et al. 2023

Methanol Fuel in Transportation Sector and Fuel Cells

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The transportation sector stands at the forefront of global challenges, where its significant contribution to greenhouse gas emissions and air pollution has become an urgent matter demanding immediate attention. For addressing these compelling concerns and leading the automotive industry toward a sustainable future, it is, therefore, imperative to explore the realm of alternative fuel that can effectively mitigate the environmental impact of automobiles. Methanol, a renewable alternative fuel, has gathered quite an attention due to its potential to be used as a wonderful alternative to neat gasoline in spark ignition engines. However, there are some core challenges that must be addressed to utilize methanol on a commercial scale in the transport sector. These core challenges include cold start issues, enhanced NOx emissions, 100% methanol utilization, transportation concerns and lubricant oil deterioration. In this chapter, these challenges along with their potential solutions have been discussed in detail. Moreover, different techniques such as artificial neural network and response surface methodology have been discussed to predict and optimize the usage of methanol in SI engines. The adoption of methanol, as an alternative to gasoline, will help us achieve some important sustainable development goals, thus fulfilling the promise of a sustainable future for the upcoming world.

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“…However, Gong et al. [ 25 ] observed that the cold start problem is eliminated for methanol fuelling of Autogas engine even at low gas fractions (10%) at elevated CR. Balki and Sayin [ 26 ] noticed a higher CR operation of Autogas/Methanol blends reduces HC and CO, while NO x and CO 2 are increased slightly.…”

Section: Introductionmentioning

confidence: 99%