scholarly journals Design and Simulation of Air-Fuel Percentage Sensors in Drone Engine Controlling

2022 ◽  
Vol 19 (1) ◽  
pp. 1713
Author(s):  
Mohammed Abdulla Abdulsada ◽  
Mohammed Wajeeh Hussein ◽  
Jabbar Shatti Jahlool ◽  
Majid S. Naghmash
Keyword(s):  
Technology Development ◽  
Sensor System ◽  
Critical Conditions ◽  
Engineering System ◽  
Engine Fuel ◽  
Fuel System ◽  
Suggested Model ◽  
Engine Operation ◽  
Fuel Ratio ◽  
Fuel Flow

This paper presents the design and simulation of air-fuel percentage sensors in drone engine control using Matlab. The applications of sensor engineering system have been pioneer in technology development and advancement of automated machine as complex systems. The integration of drone fuel sensor system is the major series components such as injector, pumps and switches. The suggested model is tuned to interface drone fuel system with fuel flow in order to optimize efficient monitoring. The sensor system is improved and virtualized in Simulink block set by varying the parameters with high range to observe the fuel utilization curves and extract the validated results. The obtained results show that the possibility of engine operation in critical conditions such as takeoff, landing, sharp maneuver and performance is applicable to turn off the system in case of break down in the sensor to ensure the safety of drone engine. HIGHLIGHTS The drone engine fuel rate sensor is designed and examined to determine the air-to-fuel ratio The suggested model is tuned to interface drone fuel system with fuel flow in order to optimize efficient monitoring The obtained results show that the possibility of using engine with different failure mode and fault considerations The represented control structure is simple, efficient and provides the required air-to-fuel ratio

scholarly journals Application of a Thermal-Hydraulic Management Model to Gas Turbine Combustors and Fuel Systems

1999 ◽  
Author(s):  
M. A. Mawid ◽  
C. A. Arana ◽  
B. Sekar
Keyword(s):  
Gas Turbine ◽  
Air Force ◽  
Turbine Engines ◽  
Analysis Tool ◽  
Flow Control Valve ◽  
Engine Fuel ◽  
Gas Turbine Engines ◽  
Fuel System ◽  
Analysis And Design ◽  
Fuel Flow

An advanced thermal management analysis tool, named Advanced Thermal Hydraulic Energy Network Analyzer (ATHENA), has been used to simulate a fuel system for gas turbine engines. The ATHENA tool was modified to account for JP-8/dodecane fuel properties. The JP-8/dodecane fuel thermodynamic properties were obtained from the SUPERTRAP property program. A series of tests of a fuel system simulator located at the Air Force Research Laboratory (AFRL)/Wright Patterson Air Force Base were conducted to characterize the steady state and dynamic behavior of the fuel system. Temperature, pressures and fuel flows for various fuel pump speeds, pressure rise and flow control valve stem positions (orifice areas), heat loads and engine fuel flows were measured. The predicted results were compared to the measured data and found to be in excellent agreement. This demonstrates the capability of the ATHENA tool to reproduce the experimental data and, consequently, its validity as an analysis tool that can be used to carry out analysis and design of fuel systems for advanced gas turbine engines. However, some key components in the fuel system simulator such as control components, which regulate the engine fuel flow based on predetermined parameters such as fan speed, compressor inlet and exit pressures and temperatures, combustor pressure, turbine temperature and power demand, were not simulated in the present investigation due to their complex interactions with other components functions. Efforts are currently underway to simulate the operation of the fuel system components with control as the engine fuel flow and power demands are varied.

Development of the Dresser Waukesha 16V150LTD Engine for Bio-Gas Fuels

2009 ◽  
Author(s):  
Edward Reinbold ◽  
James von der Ehe
Keyword(s):  
Engine Performance ◽  
Engine Fuel ◽  
Test Results ◽  
Fuel System ◽  
Heating Value ◽  
Performance Requirements ◽  
Fuel Flow ◽  
Lower Heating Value ◽  
Value Range ◽  
Range Test

Dresser Waukesha released the 16V150LTD engine for operation on pipeline natural gas in 2006. The engine has since been developed for operation on low Btu Bio gas fuels; including landfill and digester applications for both 50 and 60 Hz operation. This paper discusses the development of the engine fuel system, calibration changes, and test results of the Bio-gas 16V150LTD. Fuel system modifications were made for the higher fuel flow rates and calibration changes were necessary to meet performance requirements across the heating value range. Test results are presented which discuss the effects of the lower heating value bio-gas fuels on combustion and engine performance.

Inherent Fuel Consumption and Exhaust Emission of the CNG–Petrol Bi–Fuel Engine Based at Non–Loaded Operation

2012 ◽  
Author(s):  
Rahmat Mohsin ◽  
Zulkefli Yaacob ◽  
Zulkifli Abdul Majid ◽  
Shameed Ashraf
Keyword(s):  
Natural Gas ◽  
Fuel Consumption ◽  
Experimental Approach ◽  
Exhaust Emission ◽  
Engine Fuel ◽  
Fuel System ◽  
Compressed Natural Gas ◽  
Fuel Ratio ◽  
Carbon Dioxide Co2 ◽  
Natural Gas Vehicle

Gas asli termampat (CNG) merupakan bahan api alternatif yang paling berjaya dan digunakan dengan meluas bagi kenderaan terkini yang berada di pasaran. Kenderaan pacuan petrol bagi tujuan ini biasanya dilengkapkan dengan kit penukar gas asli bagi membolehkan operasian dwi-bahan api di antara CNG dan petrol. Pendekatan secara uji kaji ini difokuskan ke atas penggunaan bahan api, emisi ekzos dan kos bahan api di antara operasian gas asli dan petrol. Rig ujian terdiri dari sebuah sistem enjin teksi dwi-bahan api menggunakan 1500 cc dengan 12 injap sistem karburetor adalah dibina khusus. Penggunaan bahan api dan emisi ekzos yang setara diperolehi pada kelajuan putaran seminit (rpm) enjin yang berbeza ketika operasian menggunakan bahan api CNG dan petrol secara berasingan. Pengoperasian rpm enjin tanpa bebanan diubahsuai dari kedudukan pegun kepada kedudukan melebihi 5000 rpm untuk memperolehi profil penggunaan bahan api dan emisi ekzos. Kedua-dua data yang diperolehi ini kemudiannya digunakan bagi mengira kadar udara bahan api enjin. Kesemua ketiga-tiga parameter yang diperolehi digunakan untuk membuat perbandingan terhadap operasian gas asli dan petrol. Pemerhatian yang dibuat menunjukkan kadar udara bahan api bermula dari 19 ke 16.3 bagi operasian petrol dan dari 40 ke 18.7 untuk operasian menggunakan gas asli. Emisi ketika operasian menggunakan CNG jelas menunjukkan penurunan ketara ke atas keluaran hidrokarbon (HC), karbon monoksida (CO), karbon dioksida (CO2) dan nitrogen oksida (NOx) dibandingkan dengan operasian menggunakan petrol. Dari segi kos, penggunaan CNG memberikan keuntungan melebihi 50% terhadap kesemua kelajuan rpm enjin jika dibandingkan dengan operasian menggunakan petrol. Kata kunci: NGV, enjin dwi–bahan api, pengunaan bahan api, emisi ekzos, CNG, gas asli Compressed natural gas (CNG) is the most successful and widely used alternative fuel for vehicles in the market today. Petrol fuelled vehicles are fitted with natural gas vehicle (NGV) conversion kit to enable bi-fuel operation between CNG and petrol. This experimental approach is focused on the fuel consumption, exhaust emission and fuel cost between natural gas and petrol operations. The specially constructed test rig comprises of the bi-fuel fuel system employed in the 1500 cc 12 valves carburettor engine NGV taxis. The inherent fuel consumption and corresponding exhaust emission are acquired at different engine revolution per minute (rpm) during petrol and CNG operation separately. The engine rpm operating without load is varied from idle to more than 5000 rpm to acquire the fuel consumption and exhaust emission profile. These two acquired data are then used to calculate the engine’s air fuel ratio. All three parameters acquired are used to conduct comparisons between petrol and natural gas operation. It is seen that the bi-fuel system operates with air fuel ratio ranging from 19 to 16.3 for petrol operation and ranges from 40 to 18.7 for natural gas operations. The emission during CNG operation clearly shows significant decrease in hydrocarbon (HC), carbon monoxide (CO), carbon dioxide (CO2) and nitrogen oxide (NOx) over the use of petrol. In terms of cost, the use of CNG provides savings exceeding 50% through all engine rpm compared to petrol non-loaded operations. Key words: NGV, bi–fuel engine, fuel consumption, exhaust emission, CNG, natural gas

Development of Fuel Control System for More Electric Engine

2015 ◽  
Author(s):  
Naoki Seki ◽  
Noriko Morioka ◽  
Hitoshi Oyori ◽  
Yasuhiko Yamamoto
Keyword(s):  
Control Method ◽  
Pressure Oscillation ◽  
System Stability ◽  
Gear Pump ◽  
Engine Fuel ◽  
Fuel System ◽  
Loop Control ◽  
Fuel Flow ◽  
Electric Engine ◽  
Experimental Rig

This paper describes the experimental rig test result and an investigation into issues of system stability and pressure oscillation transmission in the MEE (More Electric Engine) fuel system. This system employs an electric motor-driven pump and directly meters the fuel flow based on the motor rotating speed. The MEE is a system architecture concept for the aircraft turbine engine that reduces fuel consumption and environmental load while improving safety, reliability and maintainability. The improvements were demonstrated by conducting a feasibility study of MEE system for small sized turbofan engine [5, 6]. The authors also conducted an experimental rig test showing capabilities in terms of fuel-metering range, accuracy and response [7]. The capability of the feedback loop control under the engine start condition was shown by the result, but meanwhile, pressure oscillation under the higher fuel flow condition was also observed. The authors repeated the rig test to investigate its root cause. This paper describes the study, which investigates the characteristics of the MEE fuel system and seeks stable control methods under conditions of higher pressure fluctuation, higher instrumentation noise or applying worn gear pump. The paper also describes the study of the pressure oscillation transmission from pump to engine combustor, which may damage the engine combustor and structures. As a result of these studies, a novel control method for the MEE fuel system is proposed, with improved oscillation stability.

scholarly journals Determination of the optimal air-fuel ratio for upgraded biogas engine operation

2021 ◽  
Vol 327 ◽  
pp. 02009
Author(s):  
Radostin Dimitrov ◽  
Penka Zlateva
Keyword(s):  
Combustion Engine ◽  
Three Dimensional ◽  
Spark Ignition Engine ◽  
Engine Fuel ◽  
Load Range ◽  
Engine Operation ◽  
Operating Modes ◽  
Fuel Ratio ◽  
Ratio Variation ◽  
Test Engine

The paper reveals a study about air-fuel ratio variation of spark-ignition engine running on upgraded biogas (biomethane). Using biogas as internal combustion engine fuel and external mixture formation is a new approach to decrease harmful exhaust gas emissions. Тo obtain minimum concentrations of exhaust gases harmful emissions the engine must work with optimal air-fuel ratio. This research contains analysis of many test engine adjusting characteristics to determine optimal air-fuel ratio for each working regime and to obtain maximum effective working process by the use of biomethane as a fuel. Three-dimensional graphics of air-fuel ratio variation across the rpm and load range were made. In conclusion based on performed experiments, a table with values of air-fuel ratio for all engine operating modes and dependence on rpm and load of the engine is proposed.

A Method to Compare Turbine Engine Airstart Times

2007 ◽  
Author(s):  
Wade Casey ◽  
Donald Malloy ◽  
Steve Arnold ◽  
Gregory Shaff ◽  
David Kidman
Keyword(s):  
Analytical Approach ◽  
Simulation Test ◽  
Engine Operation ◽  
Turbofan Engine ◽  
Turbine Engine ◽  
Power Extraction ◽  
Installation Effects ◽  
Fuel Flow ◽  
Starter Motor ◽  
The Difference

Turbine engine airstarts are conducted throughout the aircraft airspeed/altitude envelope in ground-based simulation test facilities and in flight tests to ensure safe and reliable engine operation. Differences in airstart times are attributable to variations in engine turnaround speed (the engine core speed at which the airstart is initiated in spooldown airstarts); combustor lightoff time; installation effects such as customer bleed and power extraction; starter motor torque; fuel flow scheduling; and engine-to-engine variation and degradation. An analytical approach is presented to account for these differences and adjust engine airstart time for a low-bypass, twin-spool, military, turbofan engine. Two examples are presented illustrating the difference in airstart times and the analytical approach used to adjust the start times.

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