Optimisation of gasoline engine performance and fuel consumption through combination of technologies

According to the boost mathematical model verified by experiments, the valve train of traditional gasoline engine is optimized and improved to achieve extended expansion cycle. The simulation results of extended expansion gasoline engine shows that the extended expansion gasoline engine has a better economic performance, compared to traditional gasoline engines. The average brake special fuel consumption (BSFC) can reduce 22.78 g / kW•h by LIVC, but the negative impacts of extended expansion gasoline engine restrict the potential of extended expansion gasoline engine. This paper analyzes the extended expansion gasoline engine performance under the influence of LIVC, discusses the way to further improve extended expansion gasoline engine performance.

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THE STUDY OF THE EFFECT OF INTAKE VALVE TIMING ON ENGINE USING CYLINDER DEACTIVATION TECHNIQUE VIA SIMULATION

Jurnal Teknologi ◽

10.11113/jt.v77.6161 ◽

2015 ◽

Vol 77 (8) ◽

Author(s):

S. F. Zainal Abidin ◽

M. F. Muhamad Said ◽

Z. Abdul Latiff ◽

I. Zahari ◽

M. Said

Keyword(s):

Fuel Consumption ◽

Internal Combustion Engines ◽

Gasoline Engine ◽

Engine Performance ◽

Intake Valve ◽

Cylinder Deactivation ◽

Part Load ◽

Engine Model ◽

Engine Efficiency ◽

Load Conditions

There are many technologies that being developed to increase the efficiency of internal combustion engines as well as reducing their fuel consumption. In this paper, the main area of focus is on cylinder deactivation (CDA) technology. CDA is mostly being applied on multi cylinders engines. CDA has the advantage to improve fuel consumption by reducing pumping losses at part load engine conditions. Here, the application of CDA on 1.6L four cylinders gasoline engine is studied. One-dimensional (1D) engine modeling work is performed to investigate the effect of intake valve strategy on engine performance with CDA. 1D engine model is constructed based on the 1.6L actual engine geometries. The model is simulated at various engine speeds at full load conditions. The simulated results show that the constructed model is well correlated to measured data. This correlated model is then used to investigate the CDA application at part load conditions. Also, the effects on the in-cylinder combustion as well as pumping losses are presented. The study shows that the effect of intake valve strategy is very significant on engine performance. Pumping losses is found to be reduced, thus improve fuel consumption and engine efficiency.

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One-Dimensional Simulation Using Port Water Injection for a Spark Ignition Engine

International Journal of Automotive and Mechanical Engineering ◽

10.15282/ijame.15.4.2018.7.0444 ◽

2018 ◽

Vol 15 (4) ◽

pp. 5803-5814 ◽

Cited By ~ 1

Author(s):

C. H. Ling ◽

M. A. Abas

Keyword(s):

Fuel Consumption ◽

Gasoline Engine ◽

Nox Reduction ◽

Water Injection ◽

Engine Performance ◽

Simulation Software ◽

Spark Ignition Engine ◽

Baseline Model ◽

One Dimensional ◽

Model Water

Water injection is a promising solution to reduce fuel consumption while improving the performance of a turbocharged gasoline engine. One-dimensional (1D) engine simulation software, AVL BOOST is rarely used to model water injection. Therefore, this study is aimed to demonstrate the detailed port water injection modelling via AVL BOOST. A four-cylinder turbocharged gasoline engine was developed in AVL BOOST based on the specification of the engine test rig and verified to be used as the baseline model. The port water injection modelling was then added to the baseline model. Water to fuel mass ratios of 0.05, 0.10, 0.15, 0.2 and 0.25 were chosen as the variables to investigate the effect of water injection on the engine performance. The results showed that maximum engine torque and IMEP increased by 10.80% and 8.65%, respectively at 3000 rpm. The water injection also reduced the in-cylinder pressure at the end of the compression stroke, reducing the compression work and improving efficiency. The reduction of combustion temperature also indicates potential for NOx reduction. The lower exhaust temperature can reduce the use of fuel enrichment which consequently reduces the fuel consumption. Conclusively, the water injection model can predict the engine performance parameters accurately.

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Investigation of the Gasoline Engine Performance and Emissions Working on Methanol-Gasoline Blends Using Engine Simulation

Numerical and Experimental Studies on Combustion Engines and Vehicles ◽

10.5772/intechopen.92858 ◽

2020 ◽

Author(s):

Simeon Iliev

Keyword(s):

Fuel Consumption ◽

Gasoline Engine ◽

Engine Performance ◽

Specific Fuel Consumption ◽

Injection System ◽

Si Engine ◽

Engine Simulation ◽

Fuel Blends ◽

Performance And Emissions ◽

The One

The aim of this study is to develop the one-dimensional model of a four-cylinder, four-stroke, multi-point injection system SI engine and a direct injection system SI engine for predicting the effect of various fuel types on engine performances, specific fuel consumption, and emissions. Commercial software AVL BOOST was used to examine the engine characteristics for different blends of methanol and gasoline (by volume: 5% methanol [M5], 10% methanol [M10], 20% methanol [M20], 30% methanol [M30], and 50% methanol [M50]). The methanol-gasoline fuel blend results were compared to those of net gasoline fuel. The obtained results show that when methanol-gasoline fuel blends were used, engine performance such as power and torque increases and the brake-specific fuel consumption increases with increasing methanol percentage in the blended fuel.

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Gasoline Engine Performance, Emissions, Vibration And Noise With Methanol-Gasoline Fuel Blends

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/927/1/012027 ◽

2021 ◽

Vol 927 (1) ◽

pp. 012027

Author(s):

Tri Susilo Wirawan ◽

Andi Erwin Eka Putra ◽

Nasruddin Aziz

Keyword(s):

Fuel Consumption ◽

Fossil Fuels ◽

Gasoline Engine ◽

Engine Performance ◽

Fuel Mixture ◽

Alternative Fuel ◽

Specific Fuel Consumption ◽

Engine Noise ◽

Engine Vibration ◽

Methanol Mixture

Abstract The consumption of fossil fuels raises major issues, such as energy availability and environmental preservation. In order to minimize these issues, it is important to propose alternative fuel. Alternative fuel to be proposed should be easy to apply current type of enginethat do not require engine modification and environmentally friendly. This study aims to determine the effect of addition of methanol as a non-fossil fuel mixture into RON 88 gasoline. The ratio of mixture is 80% of RON 88 gasoline and 20% of methanol. We conducted the experiment to determine the mixture effect on fuel properties, engine performance, engine vibration, engine noise, and exhaust emissions. The engine simulation utilized the TV-1 engine (Kirloskar Oil Engines Ltd.). The results show that the engine performance of fuel mixed with methanol tends to be better even though the fuel consumption is higher, the highest specific fuel consumption in the methanol mixture is 2.9 kg/kwh while the specific fuel consumption for gasoline without a methanol mixture is 2.64 kg/kwh. The largest engine vibration occurred in the measurement of the vertical radial direction of 36 m/s2 and 34 m/s2 for with methanol and without the addition of methanol, at 1200 rpm to 1600 rpm respectively. Engine noise is higher for fuel mixed with methanol with the largest value of 86.4 dB compared to 85.7 dB for pure gasoline. Lower emission levels for fuel blended with methanol, where the highest HC emission for pure gasoline is 32 ppm while fuel mixed with methanol is 17 ppm.

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PERFORMA MESIN MOTOR BERBAHAN BAKAR ETANOL DENGAN PERUBAHAN KAPASITAS MESIN DAN 2 BUSI

Jurnal Poli-Teknologi ◽

10.32722/pt.v17i3.1272 ◽

2019 ◽

Vol 17 (3) ◽

Author(s):

Farid Majedi ◽

Fredy Susanto

Keyword(s):

Fuel Consumption ◽

Research Method ◽

Gasoline Engine ◽

Engine Performance ◽

Performance Testing ◽

Petroleum Products ◽

Test Machine ◽

Ethanol Fuel ◽

Spark Plug ◽

Engine Capacity

ABSTRACTPetroleum reserves are running low. To solve this problem by optimizing the use of petroleum products, used ethanol for gasoline replacement. The motor is modified so that the use of ethanol as a substitute for gasoline can be done. This study aims to see the engine performance with changes in engine capacity and the use of 2 spark plugs. This research method is to modify engine capacity from 113,7 cc to 100,45 cc and use 2 spark plugs. Performance testing of 95% ethanol fuel modification engine with Dynometer test machine, to determine power, torque and fuel consumption. Performance modification of gasoline engine and 1 spark plug is also tested, then compared. The results showed that the power in the engine capacity of 100.45 cc with ethanol fuel 95% smaller 7.3% compared to the power on the engine capacity of 100.45 cc with fuel pertalite. Torque on the engine capacity of 100.45 cc with ethanol fuel 95% smaller 7.5% compared to torque on the engine capacity of 100.45 cc with fuel pertalite. Fuel consumption on 100.45 cc engine fueled ethanol 95% larger 43.6% compared to fuel consumption in the engine capacity of 100.45 cc with fuel pertalite.Keywords : Engine capacity, 2 spark plugs, ethanol, Power, torque.ABSTRAKCadangan minyak bumi mulai menipis. Untuk mengatasi masalah ini dengan mengoptimalkan penggunaan produk minyak bumi, digunakan etanol untuk pengganti bensin. Motor dimodifikasi agar penggunaan etanol sebagai pengganti bensin dapat dilakukan. Penelitian ini bertujuan untuk melihat performa mesin dengan perubahan kapasitas mesin dan penggunaan 2 busi. Metode penelitian ini adalah memodifikasi kapasitas mesin dari 113,7 cc menjadi 100,45 cc dan menggunakan 2 busi. Pengujian kinerja mesin modifikasi bahan bakar etanol 95% dengan mesin uji Dynometer, untuk menentukan daya, torsi dan konsumsi bahan bakar. Performa modifikasi mesin bahan bakar bensin dan 1 busi juga diuji, kemudian dibandingkan. Hasil penelitian menunjukkan Daya pada mesin berkapasitas 100,45 cc dengan bahan bakar etanol 95% lebih kecil 7,3% dibandingkan pada daya pada mesin berkapasitas 100,45 cc dengan bahan bakar pertalite. Torsi pada mesin berkapasitas 100,45 cc dengan bahan bakar etanol 95% lebih kecil 7,5% dibandingkan torsi pada mesin berkapasitas 100,45 cc dengan bahan bakar pertalite. Konsumsi bahan bakar pada mesin berkapasitas 100,45 cc berbahan bakar etanol 95% lebih besar 43,6% dibandingkan konsumsi bahan bakar pada mesin berkapasitas 100,45 cc dengan bahan bakar pertalite.Kata kunci : Kapasitas mesin, 2 busi, etanol, Daya, torsi.

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Advancements in mechanical engineering spell hopeful development of autonomous biobots

10.31224/osf.io/bue86 ◽

2019 ◽

Author(s):

Aris Triwiyatno ◽

Sumardi Sumardi

Keyword(s):

Fuzzy Logic ◽

Fuel Consumption ◽

Gasoline Engine ◽

Control Process ◽

Engine Performance ◽

Complex Problem ◽

Torque Control ◽

Reduce Fuel Consumption ◽

Inference System ◽

Engine Torque

In the case of injection gasoline engine, or better known as spark ignition engines, an effort to improve engine performance as well as to reduce fuel consumption is a fairly complex problem. Generally, engine performance improvement efforts will lead to increase in fuel consumption. However, this problem can be solved by implementing engine torque control based on intelligent regulation such as the fuzzy logic inference system. In this study, fuzzy logic engine torque regulation is used to control the throttle position entered by the driver to achieve optimal engine torque. An engine torque vs. throttle position and engine speed mapping for vehicles with economical function is used to build this control process regulation. From the simulation result, it can be concluded that this control strategy is very effective to reduce fuel consumption and simultaneously to optimize the engine performance.

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Mode Strategy for Engine Efficiency Enhancement by Using a Magneto-Rheological Variable Valve Train

Journal of Energy Resources Technology ◽

10.1115/1.4048671 ◽

2020 ◽

Vol 143 (6) ◽

Author(s):

Yaojung Shiao ◽

Premkumar Gadde ◽

Mahendra Babu Kantipudi

Keyword(s):

Fuel Consumption ◽

Gasoline Engine ◽

Engine Performance ◽

Valve Train ◽

Valve Lift ◽

Dynamic Simulations ◽

Part Load ◽

Engine Efficiency ◽

Magneto Rheological ◽

Variable Valve

Abstract Variable valve timing (VVT) and variable valve lift (VVL) are two promising methods for improving gasoline engine performance. VVL improves part-load performance, and VVT reduces low-speed fuel consumption. Automobile industries and researchers have developed several mechanical, hydraulic, and electronic devices to implement these variable valve functions in engines. In this study, a control strategy is developed for a new compact and low-energy-consumption magneto-rheological valve train (MRVT) to effectively accomplish the variable valve functions and achieve superior engine performance. A non-throttle single-cylinder spark-ignition (SI) engine dynamic model is established to simulate the engine performance by using the flexibility of this new valve train. A six-mode strategy using VVT and VVL is proposed under different engine running conditions of speed and load. Dynamic simulations were conducted for investigating the six-mode strategy based engine performance. The results indicate that the combination of VVT and VVL in the corresponding engine mode can effectively give about 15–20% improvement in the brake fuel efficiency during low and medium speeds. Moreover, by using VVL, about 10–14% improvement in brake specific fuel consumption can be achieved at part-load conditions. According to this computational investigation, the overall engine efficiency and performance can be improved significantly by using a controllable magneto-rheological valve and strategically changing the engine VVL and VVT.

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Investigation of Intake Valve Strategy on the Cylinder Deactivation Engine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.819.459 ◽

2016 ◽

Vol 819 ◽

pp. 459-465

Author(s):

Mohd Farid Muhamad Said ◽

Zulkarnain Abdul Latiff ◽

Shaiful Fadzil Zainal Abidin ◽

Izzarief Zahari

Keyword(s):

Fuel Consumption ◽

Internal Combustion Engines ◽

Gasoline Engine ◽

Engine Performance ◽

Research Area ◽

Intake Valve ◽

Cylinder Deactivation ◽

Part Load ◽

Main Research ◽

Load Conditions

There are many technologies that being developed to increase the efficiency of internal combustion engines as well as reducing their fuel consumption. In this paper, the main research area is focus on cylinder deactivation (CDA) technology. CDA mostly being applied on multi cylinders engines. CDA has the advantage in improving fuel consumption by reducing pumping losses at part load engine conditions. Here, the application of CDA on 1.6L four cylinders gasoline engine was studied. One-dimensional (1D) engine modeling is performed to investigate the effect of intake valve strategy on engine performance with CDA. 1D engine model is constructed according to the 1.6L actual engine geometries. The model is simulated at various engine speeds at full load conditions. The simulated results show that the constructed model is well correlated to measured data. This correlated model used to investigate the CDA application at part load conditions. Also, the effects on the in-cylinder combustion as well as pumping losses are presented. The study shows that the effect of intake valve strategy is very significant on engine performance. Pumping losses is found to be reduced, thus improving fuel consumption and engine efficiency.

Download Full-text