Controlling spark timing for consecutive cycles to reduce the cyclic variations of SI engines

Kaleli, Alirıza; Ceviz, Mehmet Akif; ERENTÜRK>, Köksal

doi:10.1016/j.applthermaleng.2015.05.042

Cited by 32 publications

(11 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Paper [10] conducted experiments to minimize cyclic variations on the SI engine, by controlling the spark timing for the entire cycle in a row. A stochastic model was performed between spark timing and maximum cylinder pressure using system identification techniques.…”

Section: в даний час основне джерело енергії сильно залежить від викоmentioning

confidence: 99%

The effect of additive on combustion characteristics and cycle to cycle variations on si engine fueled by gasoline and bioethanol

Abikusna

Sugiarto

Monasari

et al. 2018

EEJET

View full text Add to dashboard Cite

Section: в даний час основне джерело енергії сильно залежить від викоmentioning

confidence: 99%

The effect of additive on combustion characteristics and cycle to cycle variations on si engine fueled by gasoline and bioethanol

Abikusna

Sugiarto

Monasari

et al. 2018

EEJET

View full text Add to dashboard Cite

“…In addition, LPG has been shown to produce lower emissions and has a high octane number that can be applied to high-compression spark-ignition engines to get the best performance. The loss of power in LPG engines can be increased by various methods to approach gasoline engine power (Kaleli et al, 2015;Çinar et al, 2016;Suyabodha, 2017). Based on the description of the problems related to online fleet driver competition, fuel prices, and the benefits of LPG as an alternative fuel, we present a techno-economic simulation of the use of LPG for ToD.…”

Section: Introductionmentioning

confidence: 99%

Converting ToD Vehicle from Gasoline to LPG in Indonesia: Cost Identification and Investment Analysis

Rosyidi¹,

Widodo²,

Purnomo³

et al. 2020

IJTech

View full text Add to dashboard Cite

The increasing number of transportation on demand (ToD) or online fleets in Indonesia, as well as the rise in gasoline prices, is a concern for most online fleet drivers. However, there is an opportunity to convert online fleets from gasoline to Liquefied Petroleum Gas (LPG) because LPG for vehicles is available in several big cities in Indonesia at a relatively low price compared to gasoline RON 90. Therefore, we present a feasibility simulation study for converting online fleets from gasoline RON 90 to LPG using two scenarios, with and without annual vehicle tax and inspection costs as scenario 1 and scenario 2, respectively. Simulation results with operational data suggest that investment is feasible today. The net present value (NPV), internal rate of return (IRR), and payback period (PP) show promising values. The NPV was IDR 35.52 and 41.14 million with an IRR of 7% and 8% for scenario 1 and scenario 2, respectively. The PP was obtained at 14 and 13 months for scenario 1 and scenario 2, respectively. However, this investment appears to be risky if there is a decrease in daily mileage and an increase in LPG prices simultaneously.

show abstract

“…The enhancement in the engine power by 10% could be achieved by elimination of the CCV for the same fuel consumption in an SI engine [22]. According to Heywood [8], Ozdor [22] and Matekunas [23], the CCV could be defined via the parameters in four principal groups: combustion-relevant parameters, pressure-relevant parameters, flame front-relevant parameters, and exhaust gas-relevant parameters [24]. CCV is most recognized in SI engines, where they are produced by fluctuations in the burn rate for each successive cycle.…”

Section: Introductionmentioning

confidence: 99%

Wavelet Analysis of the Effect of Injection Strategies on Cycle to Cycle Variation GDI Optical Engine under Clean and Fouled Injector

et al. 2019

View full text Add to dashboard Cite

High fluctuation in cyclic variations influences engine combustion negatively, leading to higher fuel consumption, lower performance, and drivability problems. This paper examines the impacts of injection strategies (injection pressure, injection timing and injection duration) on the cyclic variation of gasoline spark ignition (SI) optical engine under clean and fouled injectors. The principal oscillatory modes of the cycle to cycle variation have been identified, and the engine cycles over which these modes may persist are described. Through the wavelet power spectrum, the presence of short, intermediate and long-term periodicities in the pressure signal have been detected. It was noticed that depending on the clean and fouled injector, the long and intermediate-term periodicities may span many cycles, whereas the short-period oscillations tend to appear intermittently. Information of these periodicities could be helpful to promote efficient control strategies for better combustion. The outcomes report that the cyclic variation of the IMEP happens on multiple timescales, and thus, display complex dynamics. As the fouled injector used, mainly intermittent high-frequency fluctuations are recognized.

show abstract

Controlling spark timing for consecutive cycles to reduce the cyclic variations of SI engines

Cited by 32 publications

References 27 publications

The effect of additive on combustion characteristics and cycle to cycle variations on si engine fueled by gasoline and bioethanol

The effect of additive on combustion characteristics and cycle to cycle variations on si engine fueled by gasoline and bioethanol

Converting ToD Vehicle from Gasoline to LPG in Indonesia: Cost Identification and Investment Analysis

Wavelet Analysis of the Effect of Injection Strategies on Cycle to Cycle Variation GDI Optical Engine under Clean and Fouled Injector

Contact Info

Product

Resources

About