Lowering of Exhaust Emission in Modern Two-Stroke Engine

Mitianiec, W.; Rodak, Łukasz

doi:10.5604/12314005.1137950

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Mitianiec and Rodak, in 2012, tested a 4.5 kW (two-stroke) engine, showing CO 2 emissions at a similar level of 100 g/kWh. On the other hand, HC + NO x emissions were significantly higher, at about 60 g/kWh, confirming the problems in controlling the fuel-air mixture for two-stroke engines [29]. The research is based on the current trend of testing the emissions of harmful exhaust gases from machines and vehicles in real working conditions [30][31][32].…”

Section: Resultsmentioning

confidence: 88%

Effect of the Volumetric Flow Rate Measurement Methodology of Positive Pressure Ventilators on the Parameters of the Drive Unit

et al. 2023

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The nature and conditions of the execution of tests (open or duct flow) in terms of evaluating the flow rate generated by positive pressure ventilators (PPV) may affect the parameters of the drive unit recorded during testing. In this article, popular PPVs (conventional type—W1 and turbo type—W2) of about 4.2 kW were tested under open flow (Method A) and duct flow (Method B) conditions. During the tests, engine load values were recorded: torque, speed, horsepower and, using portable emissions measurement systems (PEMS), exhaust gas emissions: carbon monoxide (CO), carbon dioxide (CO2), hydrocarbons (HC), nitrogen oxides (NOx) and fuel consumption. Depending on the method used to measure ventilator flow rates, drive units can have different drive power requirements (from 3.2% to 4.5%). Changes in drive unit operating conditions induced by the flow measurement method are observed in the results of fuel consumption (from 0.65% to 9.8%) and emissions of harmful exhaust compounds: CO2 up to 2.4%, CO up to 67%, HC up to 93.2% and NOx up to 37%. The drive units of turbo type fans (W2) are more susceptible to the influence of the test methods in terms of flow assessment, where they have higher emissions of harmful exhaust gases when tested by Method A. Flow measurement methods affect the oscillation of propulsion power, which contributes to disturbances in the control of the fuel–air mixture composition. The purpose of this article is to analyse the impact of testing methods for measuring the flow rate of positive pressure ventilators on the performance of the drive unit.

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Section: Resultsmentioning

confidence: 88%

Effect of the Volumetric Flow Rate Measurement Methodology of Positive Pressure Ventilators on the Parameters of the Drive Unit

et al. 2023

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“…There are several papers related to research conducted, such as [3] which proposes changing the fuel supply from the carburetor to direct injection by modifying the cylinder head to place the injector as a supply of fuel for the combustion process without going through the oil bath so that the process combustion is only the fuel that is burning. Direct injection can improve engine performance because the fuel is injected directly into the combustion chamber without going through the oil pan [4][5]. Then in another simple research to determine engine performance against the influence of variations in fuel pressure and injection time using pneumatically compressed fuel has been successful research [6][7][8], However, this study has a drawback, namely the resulting fuel pressure is unstable because it uses pneumatic pressure from the compressor so that after the fuel is injected it takes quite a long time to raise the pressure back to the required value.…”

Section: Introductionmentioning

confidence: 99%

Arduino uno-based electronic control unit module remapping to achieve optimal engine rotation speed on spark ignition 2-stroke direct injection engine

Yoga,

Syaka,

Prakoso

2023

J. Phys.: Conf. Ser.

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Direct injection technology in 2-stroke motorcycle engines can be a hope for overcoming exhaust emissions and optimizing ignition 2-stroke engine performance because direct injection engines use high-pressure pumps based on injection time and duration. On the TPS (throttle position sensor) to produce the optimal fuel mixture. This research will focus on Remapping the Arduino Uno-Based Electronic Control Unit (ECU) Module to Analyze Optimal Engine Rotation Speed in Spark Ignition 2-Stroke Direct Injection Machines. Experimental method using a Spark Ignition 2-Stroke Direct Injection engine with a capacity of 110cc. Variation of injection time angle 5°, 10°, and 15° Before BDC, 0° BDC, and 5°, 10°, and 15° after BDC, variations in injection duration based on TPS opening 20%, 40%, 60%, 80%, and 100%, as well as the fuel injected duration of 3ms, 3.25ms, 3.5ms, 3.75ms and, 4.25ms. Arduino module as a control system for timing and duration of fuel injection. Then tested alternately to get the optimal engine speed using a tachometer. Optimal results are obtained on the injection time curve 15 before BDC produces optimal engine speed with a value of 5480 rpm with a duration of 3.75 ms based on TPS openings of 61-80%.

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“…To overcome this problem is to modify the fuel system from a 2-stroke sparkignition engine to a direct injection fuel system so that, the wasted fuel along with the exhaust gas during the scavenging process can be avoided [3]. In addition, using a direct injection fuel system will improve engine performance [4], [5]. This is because direct injection technology allows homogeneous combustion with the right mixture so that it reduces exhaust emissions, improves fuel efficiency, and increases engine power [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Prototype Electronic Control Unit Direct Injection Fuel System Arduino-Based for 2-stroke Spark Ignition Engine

Syaka

Purwoko

Sopiyan

2021

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The development of technology on the 2-stroke direct-injection spark-ignition engine is expected to be a solution to optimize engine performance and reduce exhaust pollution. The fuel injection system in the operation of the spark-ignition engine is controlled by the Electronic Control Unit (ECU), so this study aims to design and experiment with a prototype of an Arduino-based direct injection fuel injection electronic control unit for 2-stroke spark-ignition engines. This research method begins with the design of an electronic control unit prototype that is selected for easy setup and low cost. Then, experiments were conducted on variations in injection timing and injection duration, which are the two main parameters of the fuel system to determine their effect on engine performance. This data is then used as a basis for setting the amount of fuel injected. The results show that there is an optimal performance under certain conditions from setting the injection timing and injection duration which is easily applied to the open-source code setting of this electronic control unit.

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Lowering of Exhaust Emission in Modern Two-Stroke Engine

Cited by 4 publications

References 2 publications

Effect of the Volumetric Flow Rate Measurement Methodology of Positive Pressure Ventilators on the Parameters of the Drive Unit

Effect of the Volumetric Flow Rate Measurement Methodology of Positive Pressure Ventilators on the Parameters of the Drive Unit

Arduino uno-based electronic control unit module remapping to achieve optimal engine rotation speed on spark ignition 2-stroke direct injection engine

Design and Experiment of a Prototype Electronic Control Unit Direct Injection Fuel System Arduino-Based for 2-stroke Spark Ignition Engine

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