High Efficiency with Future Alcohol Fuels in a Stoichiometric Medium Duty Spark Ignition Engine

2007 ◽  
Author(s):  
Matthew J. Brusstar ◽  
Charles L. Gray
Keyword(s):  
High Efficiency ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Alcohol Fuels

scholarly journals A 4-stroke spark-ignition engine fuelled with low quality gas

2017 ◽  
Vol 168 (1) ◽  
pp. 122-124
Author(s):  
Marek BRZEŻAŃSKI ◽  
Michał MARECZEK ◽  
Marek SUTKOWSKI ◽  
Wojciech SMUGA
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
High Efficiency ◽  
High Reliability ◽  
Calorific Value ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
University Of Technology ◽  
Product Gas ◽  
Methane Number

Huge amount of by-products is still considered as waste and is simply disposed, for example by-product gas is usually flared. Political and social pressure to reduce air pollution and national needs for energy security make these waste fuels interesting for near-future power generation. Unfortunately most of these waste fuels, even when liquefied or gasified, have very low quality and can hardly be used in high-efficiency power systems. Among main challenges are low calorific value and composition fluctuation. Additionally very often there is a high content of sulphur, siloxanes, tars, etc., which have to be removed from the fuel. Modern 4-stroke gas engines designed for power generation applications provide very high efficiency, high reliability and availability. Unfortunately, these gas engines require high quality fuel with stable composition. Horus-Energia together with Cracow University of Technology developed a novel gas supply system HE-MUZG that can adapt to current gas quality and change engine settings accordingly.This article will present results from the HE-MUZG system tests on modern 4-stroke spark-ignition gas engine. Tests focus on low quality gas, such as gas with low calorific value, gas with very low methane number and gas with very big variations of calorific value. Test results compared with performance of that engine in the original configuration show huge improvements. Moreover the HE- MUZG system is easy to implement in commercial gensets.

Study on Knocking Characteristics for High-Efficiency Operation of a Super-Lean Spark Ignition Engine

2018 ◽  
Author(s):  
Takeshi Nishiyama ◽  
Keito Agui ◽  
Masaaki Togawa ◽  
Masanori Saito ◽  
Mitsuaki Tanabe ◽  
...  
Keyword(s):  
High Efficiency ◽  
Spark Ignition ◽  
Spark Ignition Engine

Potential of alcohol fuels in active and passive pre-chamber applications in a passenger car spark-ignition engine

2021 ◽  
pp. 146808742110531
Author(s):  
Patrick Burkardt ◽  
Christian Wouters ◽  
Stefan Pischinger
Keyword(s):  
Combustion Chamber ◽  
Alternative Fuels ◽  
Direct Injection ◽  
Combustion Process ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Passenger Car ◽  
Excess Air ◽  
Lean Limit ◽  
Alcohol Fuels

Both the shift from fossil to alternative fuels and the implementation of a pre-chamber combustion system allow for an increase in the efficiency of an internal combustion engine through optimizing its combustion process, while simultaneously reducing the engine-out emissions. The combination of alcohol-based fuels and pre-chamber combustion concepts has not been investigated on spark-ignition engines with high compression ratios in a passenger car size. This study presents investigations to show the potential in maximum achievable lean limit and net indicated efficiency. In particular, we present investigations of two alternative alcohol fuels on a direct-injection spark-ignition single-cylinder research engine for passenger car applications with a compression ratio of 16.4. The engine was operated with both an active and a passive pre-chamber, and the experimental results were compared to those of conventional spark-ignition operation. Direct injection was used for both the main combustion chamber and the pre-chamber. Methanol and ethanol were used as fuels for the main combustion chamber, whereas exclusively ethanol was used for the pre-chamber fueling. The performance of the alcohol fuels in all combustion configurations was evaluated in both part-load and high-load conditions. In particular, investigations of the combustion behavior over a variation of the excess air ratio at indicated mean effective pressures of 6 and 15 bar were performed. It can be concluded that with the use of methanol as fuel for the main combustion chamber, both higher excess air ratios and higher indicated efficiencies were achieved compared to the use of ethanol as the main combustion chamber fuel. In particular, a maximum net indicated efficiency of 48% at an excess air ratio of 2.0 was achieved with methanol. Moreover, active pre-chamber operation extended the lean limit to an excess air ratio of 2.3 compared to the maximum lean limit of 1.7 in passive pre-chamber operation.

A study of mechanical variable valve operation with gasoline–alcohol fuels in a spark ignition engine

Fuel ◽  
2013 ◽  
Vol 106 ◽  
pp. 802-813 ◽  
Author(s):  
Alasdair Cairns ◽  
Hua Zhao ◽  
Alan Todd ◽  
Pavlos Aleiferis
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mechanical Variable ◽  
Alcohol Fuels ◽  
Valve Operation ◽  
Variable Valve

scholarly journals Evaluation of the efficiency of the three-way catalytic converter of a spark ignition engine of the chosen aromatic hydrocarbons removing

2017 ◽  
Vol 169 (2) ◽  
pp. 83-86
Author(s):  
Maria SKRĘTOWICZ ◽  
Joanna WOŹNIAK ◽  
Radosław WRÓBEL
Keyword(s):  
Aromatic Hydrocarbons ◽  
Rotational Speed ◽  
High Efficiency ◽  
Catalytic Converter ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Catalytic Reactor ◽  
Exhaust Gases ◽  
Before And After ◽  
Benzene Toluene

In the paper the results of measurement of the most popular aromatic hydrocarbons (benzene, toluene and xylenes) in the exhaust of spark ignition engine before and after three-way catalytic reactor were presented. The investigations have been conducted at fixed rotational speed, 2500 rpm and at a few different values of torque in range 0 – 80 Nm, every 10 Nm. Based on obtained results, the calculations of catalytic reactor efficiency in removing analysed components have been made. The measurements showed high efficiency of the catalytic converter in reduction of that pollutants in exhaust gases.

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