Optimization of Vehicle Air Intake System and Air Charge Temperature for Better Engine Performance and Fuel Economy

2016 ◽  
Author(s):  
Ken T. Lan
Keyword(s):  
Fuel Economy ◽  
Engine Performance ◽  
Intake System ◽  
Air Intake ◽  
Charge Temperature

Application of Box-Behnken Analysis on the Optimisation of Air Intake System for a Naturally Aspirated Engine

2020 ◽  
Vol 17 (2) ◽  
pp. 8029-8042
Author(s):  
N.S. Mustafa ◽  
N.H.A. Ngadiman ◽  
M.A. Abas ◽  
M.Y. Noordin
Keyword(s):  
Fuel Consumption ◽  
Fuel Efficiency ◽  
Engine Performance ◽  
Fuel Price ◽  
Design Expert ◽  
Intake System ◽  
Analysis Technique ◽  
System Components ◽  
Air Intake ◽  
High Influence

Fuel price crisis has caused people to demand a car that is having a low fuel consumption without compromising the engine performance. Designing a naturally aspirated engine which can enhance engine performance and fuel efficiency requires optimisation processes on air intake system components. Hence, this study intends to carry out the optimisation process on the air intake system and airbox geometry. The parameters that have high influence on the design of an airbox geometry was determined by using AVL Boost software which simulated the automobile engine. The optimisation of the parameters was done by using Design Expert which adopted the Box-Behnken analysis technique. The result that was obtained from the study are optimised diameter of inlet/snorkel, volume of airbox, diameter of throttle body and length of intake runner are 81.07 mm, 1.04 L, 44.63 mm and 425 mm, respectively. By using these parameters values, the maximum engine performance and minimum fuel consumption are 93.3732 Nm and 21.3695×10-4 kg/s, respectively. This study has fully accomplished its aim to determine the significant parameters that influenced the performance of airbox and optimised the parameters so that a high engine performance and fuel efficiency can be produced. The success of this study can contribute to a better design of an airbox.

scholarly journals Effect of Charge Temperature on Performance of 4s Single Cylinder Twin Spark SI Engine

2020 ◽  
Vol 9 (4) ◽  
pp. 1574-1578
Keyword(s):  
Mass Flow Rate ◽  
Air Temperature ◽  
Mass Flow ◽  
Flow Rate ◽  
Engine Performance ◽  
Atmospheric Temperature ◽  
Si Engine ◽  
Exhaust Gas Emission ◽  
Air Intake ◽  
Charge Temperature

This study involves the analysis of the performance improvement of the air-cooled SI engine by controlling the charge temperature. The insulated intake manifold has been used to maintaining the charge temperature at the atmospheric temperature level. The effect of variation in intake air temperature coming from atmospheric temperature on the engine performance in terms of brake mean effective pressure, engine power, engine torque are investigated. The result indicated that the mass flow rate of air is increased after using cold and insulated air intake system with average air density of 1.174 kg/m3. This improved air intake mass flow rate increased the brake torque and a reduction in exhaust gas emission. The result shows when the air-fuel mixture allowed for combustion at atmospheric intake air temperature (30ºC), the engine produces 1.2003 kW power and 5.7314 N-m torque at 2000 rpm. The engine performance calculated at an engine speed of 1000, 1500 and 2000 rpm.

scholarly journals A design concept of a device for measuring air flow resistance in vehicle filters

2020 ◽  
Author(s):  
Adrian Misztuk
Keyword(s):  
Flow Resistance ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Air Flow ◽  
Engine Performance ◽  
Internal Combustion ◽  
Design Concept ◽  
Compression Ignition Engine ◽  
Intake System ◽  
Air Intake

Internal combustion engines have to be supplied with adequate amounts of fuel and air. The required amount of fuel and air is determined by the engine controller to guarantee that the fuel reaching the cylinder is burned effectively and that the composition of exhaust gas meets standard requirements. The air supplied to an internal combustion engine has to be adequately filtered because impurities reaching the engine can accelerate the wear of engine components. The air intake system features a filtering partition which captures impurities and prevents them from reaching the engine. However, the filtering process decreases the rate at which cylinders are filled with fresh air, which can compromise engine performance. Therefore, effective solutions are needed to ensure that the flow of filtered air does not significantly decrease the volumetric efficiency of cylinders.  This study presents a design concept of a device for measuring pressure in the air intake system in front of and behind the filtering partition. The proposed device can be useful for measuring filter wear. A prototype of the proposed device was built and tested on several air filters. To eliminate throttle valve impacts, the device was tested in a compression ignition engine. The results of the conducted tests demonstrated that the device correctly measured air flow. The conducted measurements also revealed that the presence of impurities in the air filter induced differences in pressure in the air intake system in front of and behind the filtering partition. The maximum air flow resistance in a clogged filter could be even 100% higher than in a brand new filter. W niniejszej pracy przedstawiono koncepcję stanowiska umożliwiającego prowadzenie pomiarów ciśnienia panującego w kanale dolotowym silnika przed i za przegrodą filtracyjną powietrza, które mogą być przydatne przy określaniu stopnia jej zużycia. Dodatkowo zbudowano prototyp urządzenia i w celu weryfikacji poprawności jego działania przeprowadzono za jego pomocą badania przykładowych filtrów. Badania wykonano z użyciem silnika spalinowego o zapłonie samoczynnym. Wyniki pomiarów potwierdzają działanie urządzenia oraz obrazują zależności pomiędzy filtrami o różnym stopniu zużycia. Okazuje się, że maksymalny opór przepływu zużytego wkładu filtracyjnego może być nawet o ok. 100% większy niż w przypadku nowego wkładu filtracyjnego.

An investigation into the use of a cyclone separator in the intake air system and its influence on the engine performance

2017 ◽  
Vol 232 (5) ◽  
pp. 667-678
Author(s):  
Ali Sakin ◽  
Irfan Karagoz ◽  
Murat Ergul ◽  
Unal Demirtas ◽  
Fatih Hakki Savas
Keyword(s):  
Pressure Drop ◽  
Engine Performance ◽  
Cyclone Separator ◽  
Performance Parameters ◽  
Air Filters ◽  
Air Filter ◽  
Intake System ◽  
Computational Fluid Dynamics Analysis ◽  
Air System ◽  
Air Intake

Filters are used to decontaminate the particles from the outside environment entering different subsystems of vehicles. Conventional air filters can cause a significant pressure drop in the intake air system because of their porous structure. In this study, a cyclone separator was designed and manufactured for the air intake system of an automobile. The pressure drop and the performance parameters of the engine were measured by using a conventional air filter or a cyclone separator in the air intake system. Futhermore, a computational fluid dynamics analysis of the cyclone separator was performed, and the results were compared with the experimental data.

scholarly journals Effects of Air Intake Pressure on the Engine Performance, Fuel Economy and Exhaust Emissions of A Small Gasoline Engine

2014 ◽  
Vol 6 ◽  
pp. 949-958 ◽  
Author(s):  
Nik Rosli Abdullah ◽  
Nafis Syabil Shahruddin ◽  
Rizalman Mamat ◽  
Aman Mohd. Ihsan Mamat ◽  
Aminuddin Zulkifli
Keyword(s):  
Fuel Economy ◽  
Gasoline Engine ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Air Intake ◽  
Intake Pressure

Economy and emission characteristics of the optimal dilution strategy in lean combustion based on GDI gasoline engine equipped with prechamber

2021 ◽  
Vol 13 (12) ◽  
pp. 168781402110381
Author(s):  
Li Wang ◽  
Zhaoming Huang ◽  
Wang Tao ◽  
Kai Shen ◽  
Weiguo Chen
Keyword(s):  
Fuel Economy ◽  
Gasoline Engine ◽  
Direct Injection ◽  
Engine Performance ◽  
Gasoline Direct Injection ◽  
Dilution Ratio ◽  
Lean Combustion ◽  
Excess Air ◽  
Combustion Phase ◽  
Hc Emissions

EGR and excess-air dilution have been investigated in a 1.5 L four cylinders gasoline direct injection (GDI) turbocharged engine equipped with prechamber. The influences of the two different dilution technologies on the engine performance are explored. The results show that at 2400 rpm and 12 bar, EGR dilution can adopt more aggressive ignition advanced angle to achieve optimal combustion phasing. However, excess-air dilution has greater fuel economy than that of EGR dilution owing to larger in-cylinder polytropic exponent. As for prechamber, when dilution ratio is greater than 37.1%, the combustion phase is advanced, resulting in fuel economy improving. Meanwhile, only when the dilution ratio is under 36.2%, the HC emissions of excess-air dilution are lower than the original engine. With the increase of dilution ratio, the CO emissions decrease continuously. The NOX emissions of both dilution technologies are 11% of those of the original engine. Excess-air dilution has better fuel economy and very low CO emissions. EGR dilution can effectively reduce NOX emissions, but increase HC emissions. Compared with spark plug ignition, the pre chamber ignition has lower HC, CO emissions, and higher NO emissions. At part load, the pre-chamber ignition reduces NOX emissions to 49 ppm.

A Novel Virtual Approach of Air Intake System Acoustic Sensitivity Study for Passenger Vehicle

2017 ◽  
Author(s):  
Muthukumar Arunachalam ◽  
Sankarasubramanian Thirukkotti ◽  
S Arunkumar ◽  
Abdul Haiyum
Keyword(s):  
Sensitivity Study ◽  
Passenger Vehicle ◽  
Intake System ◽  
Air Intake ◽  
Acoustic Sensitivity

scholarly journals Review of Performance and Emmissions Characteristics of Bio-Additive Fuel on SI Engine Fuelled by Biopetrol

2015 ◽  
Vol 773-774 ◽  
pp. 430-434
Author(s):  
Azizul Mokhtar ◽  
Nazrul Atan ◽  
Najib Rahman ◽  
Amir Khalid
Keyword(s):  
Fuel Economy ◽  
Fossil Fuels ◽  
Review Paper ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Spark Ignition Engine ◽  
Si Engine ◽  
New Approach ◽  
Performance And Emission ◽  
Performance And Emissions

Bio-additive is biodegradable and produces less air pollution thus significant for replacing the limited fossil fuels and reducing threats to the environment from exhaust emissions and global warming. Instead, the bio-additives can remarkably improve the fuel economy SI engine while operating on all kinds of fuel. Some of the bio-additive has the ability to reduce the total CO2 emission from internal petrol engine. This review paper focuses to determine a new approach in potential of bio-additives blends operating with bio-petrol on performance and emissions of spark ignition engine. It is shown that the variant in bio-additives blending ratio and engine operational condition are reduced engine-out emissions and increased efficiency. It seems that the bio-additives can increase the maximum cylinder combustion pressure, improve exhaust emissions and largely reduce the friction coefficient. The review concludes that the additives usage in bio-petrol is inseparable for the better engine performance and emission control and further research is needed to develop bio-petrol specific additives.

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