Vehicle evaluation of neat methanol—compromises among exhaust emissions, fuel economy and driveability

1979 ◽  
Vol 3 (3) ◽  
pp. 243-274 ◽  
Author(s):  
Norman D. Brinkman
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions

Tumble Flow Measurements Using Three Different Methods and Its Effects on Fuel Economy and Emissions

2006 ◽  
Author(s):  
Myoungjin Kim ◽  
Sihun Lee ◽  
Wootae Kim
Keyword(s):  
Fuel Economy ◽  
High Performance ◽  
Gasoline Engine ◽  
Exhaust Emissions ◽  
Combustion Stability ◽  
Lean Burn ◽  
Flow Measurements ◽  
Part Load ◽  
Gasoline Engines ◽  
Dynamometer Test

In-cylinder flows such as tumble and swirl have an important role on the engine combustion efficiencies and emission formations. In particular, the tumble flow, which is dominant in-cylinder flow in current high performance gasoline engines, has an important effect on the fuel consumptions and exhaust emissions under part load conditions. Therefore, it is important to know the effect of the tumble ratio on the part load performance and optimize the tumble ratio of a gasoline engine for better fuel economy and exhaust emissions. First step in optimizing a tumble flow is to measure a tumble ratio accurately. In this research the tumble flow was measured, compared and correlated using three different measurement methods: steady flow rig, 2-Dimensional PIV, and 3-Dimensional PTV. Engine dynamometer test was performed to find out the effect of the tumble ratio on the part load performance. Dynamometer test results of high tumble ratio engine showed faster combustion speed, retarded MBT timing, higher exhaust emissions, and a better lean burn combustion stability. Lean limit of the baseline engine was expanded from A/F=18:1 to A/F=21:1 by increasing a tumble ratio using MTV.

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.

Development of a Fuel Economy and Exhaust Emissions Test Method with HILS for Heavy-Duty HEVs

2008 ◽  
Vol 1 (1) ◽  
pp. 873-887 ◽  
Author(s):  
Kenji Morita ◽  
Kazuki Shimamura ◽  
Seiichi Yamaguchi ◽  
Keiji Furumachi ◽  
Nobuya Osaki ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions ◽  
Test Method ◽  
Heavy Duty

Fuel Economy and Exhaust Emissions of the Honda CVCC Engine

1976 ◽  
Vol 12 (1-3) ◽  
pp. 11-27 ◽  
Author(s):  
KAZUO INOUE ◽  
HARUO UKAWA ◽  
ISAO FUJII
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions

Exhaust emissions and fuel economy improvements through thermal performance control in a novel three-way catalytic converter

2016 ◽  
Vol 94 (5) ◽  
pp. 905-912 ◽  
Author(s):  
Rajab Litto ◽  
Joseph P. Mmbaga ◽  
Robert E. Hayes ◽  
Stefano Plati ◽  
Voislav Blagojevic ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Fuel Economy ◽  
Catalytic Converter ◽  
Exhaust Emissions ◽  
Performance Control

scholarly journals Effects of Air Intake Pressure to the Fuel Economy and Exhaust Emissions on a Small SI Engine

2013 ◽  
Vol 68 ◽  
pp. 278-284 ◽  
Author(s):  
Nik Rosli Abdullah ◽  
Nafis Syabil Shahruddin ◽  
Aman Mohd. Ihsan Mamat ◽  
Salmiah Kasolang ◽  
Aminuddin Zulkifli ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions ◽  
Si Engine ◽  
Air Intake ◽  
Intake Pressure
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