Development of a Mercedes-Benz Natural Gas Engine M 366 LAG, with a Lean Burn Combustion System

Borges, Luiz Henrique; Hollnagel, Carlos; Muraro, Wilson

doi:10.4271/962378

Cited by 21 publications

(10 citation statements)

References 2 publications

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“…LPG, propane, bio-diesel, hydrogen, fuel cells. Out of these available alternate fuels compressed natural gas (CNG) is the one which is meeting the maximum needs of countries worldwide, who want to switch over to alternate fuels [9][10][11][12]. CNG has been considered as one the best solutions for fossil fuel substitution because of its inherent clean nature of combustion [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Technical overview of compressed natural gas (CNG) as a transportation fuel

Khan

Yasmin

Shakoor

2015

Renewable and Sustainable Energy Reviews

338

117

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Section: Introductionmentioning

confidence: 99%

Technical overview of compressed natural gas (CNG) as a transportation fuel

Khan

Yasmin

Shakoor

2015

Renewable and Sustainable Energy Reviews

338

117

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“…CO 2 emissions from a natural gas engine can be reduced by more than 20% compared to a gasoline engine at equal power (Kato et al, 2001). By increasing boost pressure levels, lean burn natural gas engines with the same displacement can produce higher power (Borges et al, 1996), and their full-load thermal efficiencies can even be very close to those of diesel engines (Yamato et al, 2001). Therefore, natural gas can be used as a reliable, safe and efficient alternative fuel of internal combustion engines for transportation mainly due to its abundance and indigenous availability at attractive prices, and is expected to find widespread use as a means to reduce CO 2 emissions and toxic gases from vehicles.…”

Section: Introductionmentioning

confidence: 97%

Combustion and emission characteristics of a lean burn natural gas engine

Cho

2008

Int.J Automot. Technol.

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Lean burn is an effective way to improve spark ignition engine fuel economy. In this paper, the combustion and emission characteristics of a lean burn natural gas fuelled spark ignition engine were investigated at various throttle positions, fuel injection timings, spark timings and air fuel ratios. The results show that ignition timings, the combustion duration, the coefficient of variation (COV) of the indicated mean effective pressure (IMEP) and engine-out emissions are dependent on the overall air fuel ratio, spark timings, throttle positions and fuel injection timings. With the increase of the air fuel ratio, the ignition delays and combustion duration increases. Fuel injection timings affect ignition timings, combustion duration, IMEP, and the COV of the IMEP. Late fuel injection timings can decrease the COV of the IMEP. Moreover, the change in the fuel injection timings reduces the engine-out CO, total hydrocarbon (THC) emissions. Lean burn can significantly reduce NOx emissions, but it results in high cyclic variations.

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“…Moreover, it possesses a high octane number (~120 -130), which enables the engine to run at a higher compression ratio and achieve a higher thermodynamic efficiency [2]. Natural gas has relatively wide flammability limits, which allows for operation at ultra-lean conditions [3,4]. The significantly large proven reserves of natural gas (200 trillion cubic meters worldwide) combined with the capability to operate a cleaner and more efficient cycle make it an attractive alternative fuel [5].…”

Section: Introductionmentioning

confidence: 99%

Implementing Natural Gas in a Compression Ignition Cycle Using Noble Gas Addition

Shahsavan¹,

Morovatiyan²,

Baghirzade³

et al. 2019

Preprint

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Natural gas is known as a relatively clean fossil fuel due to its low carbon to hydrogen ratio compared to other transportation fuels, which yields a reduction of carbon monoxide, carbon dioxide, and unburned hydrocarbons emissions. However, it has a low cetane number, which makes it a difficult fuel for use in compression ignition engines. A potential solution for this issue can be adding small amounts of argon, as a noble gas with a low specific heat to modify the intake conditions. In this numerical study, a commercial compression ignition engine has been modeled to evaluate the auto-ignition of natural gas with the modified intake conditions. Different amounts of argon added to the intake air are examined in order to attain the optimal operating conditions. A detailed chemistry solver is implemented on a 53-species chemical kinetics mechanism to calculate the rate constants. The results show that compression ignition of natural gas can be achieved by adding small amounts of argon to the intake air. It drastically increases the in-cylinder temperature and pressure near TDC, which enables the auto-ignition of the injected natural gas. Moreover, it leads to the reduction in ignition delay and heat release rate, and expands the combustion duration. Emissions analysis indicates that NOx and CO2 can be significantly diminished by increasing the amount of argon in the intake composition. This study introduces an efficient and clean compression ignition engine fueled with natural gas running in optimal operating conditions using argon addition to the intake.

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Development of a Mercedes-Benz Natural Gas Engine M 366 LAG, with a Lean Burn Combustion System

Cited by 21 publications

References 2 publications

Technical overview of compressed natural gas (CNG) as a transportation fuel

Technical overview of compressed natural gas (CNG) as a transportation fuel

Combustion and emission characteristics of a lean burn natural gas engine

Implementing Natural Gas in a Compression Ignition Cycle Using Noble Gas Addition

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