Experimental study of fuel stratification for HCCI high load extension

2011 ◽  
Vol 88 (9) ◽  
pp. 2949-2954 ◽  
Author(s):  
Dong-bo Yang ◽  
Zhi Wang ◽  
Jian-Xin Wang ◽  
Shi-jin Shuai
Keyword(s):  
Experimental Study ◽  
High Load ◽  
Fuel Stratification

Experimental study on the high load extension of PODE/methanol RCCI combustion mode with optimized injection strategy

Fuel ◽  
2021 ◽  
pp. 122726
Author(s):  
Lejian Wang ◽  
Junheng Liu ◽  
Qian Ji ◽  
Ping Sun ◽  
Jie Li ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Load ◽  
Combustion Mode ◽  
Injection Strategy

On the potential of ethanol fuel stratification to extend the high load limit in stratified-charge compression-ignition engines

Fuel ◽  
2012 ◽  
Vol 99 ◽  
pp. 45-54 ◽  
Author(s):  
Alex Krisman ◽  
Evatt R. Hawkes ◽  
Sanghoon Kook ◽  
Magnus Sjöberg ◽  
John E. Dec
Keyword(s):  
High Load ◽  
Compression Ignition ◽  
Ethanol Fuel ◽  
Stratified Charge ◽  
Compression Ignition Engines ◽  
Fuel Stratification ◽  
Load Limit

Experimental Study of EGR on Performance and Emissions of a Turbocharged DME Engine

2014 ◽  
Vol 886 ◽  
pp. 257-261
Author(s):  
Jun Hua Wu ◽  
Fu Shan Zuo ◽  
Yong Hui Zhang
Keyword(s):  
Experimental Study ◽  
Fuel Consumption ◽  
Substantial Reduction ◽  
Load Condition ◽  
High Load ◽  
Reduction Of No ◽  
Low Load ◽  
Emission Behavior ◽  
High Load Condition

This paper presents anexperimental study on reduction of NOx emission of a turbochargedengine fuelled with DME by means of EGR. Effects of EGR rate on engineefficiency and emission behavior was evaluated. The results show that the EGRcould be used as an effective way to reduce NOx emission. NOx isreduced almost linearly with increase of EGR rate. At low load condition, theNOx emission is reduced by 80% with 40% EGR rate without any economypenalty. At high load condition, the same substantial reduction of NOx couldbe achieved with only 20% EGR rate. While the HC and CO emissions are increasedwith increase of EGR rate. However, it is worth noting that EGR had a negativeeffect on fuel consumption at high load. Low EGR ratio should be taken at highengine load condition.

Experimental Study on Diesel Engine Emission with Mixed Fuel of GDE and Diesel

2012 ◽  
Vol 220-223 ◽  
pp. 871-874
Author(s):  
Ke Jiu Lu ◽  
Xi Liang Dai
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Volume Fraction ◽  
Direct Injection ◽  
Diesel Oil ◽  
High Load ◽  
Pollutant Emission ◽  
Diesel Emission ◽  
Engine Emission ◽  
Diesel Engine Emission

An experimental study is made on the emission of a single-cylinder direct injection diesel engine with different proportions of GDE and diesel. The study shows the mechanism when GDE is added to diesel to reduce diesel emission. And an analysis of pollutant emission is made on the regularities of variation with engine load changes. The results show that the addition of diesel oil in the volume fraction of 10% to 20% of GDE can significantly increase the thermal efficiency, shorten the duration of diesel combustion, substantially decrease carbon smoke and CO in emission under the high-load conditions and slightly lessen the NOx emission, but HC emission still remain basically unchanged.

Experimental Study on High-Load Extension of Gasoline/PODE Dual-Fuel RCCI Operation Using Late Intake Valve Closing

2017 ◽  
Vol 10 (4) ◽  
pp. 1482-1490 ◽  
Author(s):  
Hu Wang ◽  
Laihui Tong ◽  
Zunqing Zheng ◽  
Mingfa Yao
Keyword(s):  
Experimental Study ◽  
High Load ◽  
Dual Fuel ◽  
Intake Valve

A New Methodology for the Experimental Study of Scuffing on Gears for Advanced Applications

2014 ◽  
Author(s):  
Ida Bartilotta ◽  
Marco Strambi ◽  
Enrico Ciulli ◽  
Michele Gravina
Keyword(s):  
Experimental Study ◽  
Load Capacity ◽  
High Load ◽  
Experimental Campaign ◽  
High Load Capacity ◽  
Advanced Applications

The paper proposes a brief overview of the commonly adopted approaches for the experimental study of scuffing on gears for advanced applications and suggests a new methodology for the design of an experimental campaign aimed at determining the scuffing resistance of an innovative aerospace gear material. The present study has been carried out by AM Testing srl in collaboration with Avio Aero within the VHLGM (Validation of High Load Capacity Gear Material) project of the Clean Sky Sustainable and Green Engines framework.

Experimental Study on Effect of Hot EGR on Combustion Characteristic of HICE under High Load Conditions

2012 ◽  
Vol 562-564 ◽  
pp. 1024-1027
Author(s):  
Xing Hua Liu ◽  
Dao Jing Wang ◽  
Fu Shui Liu
Keyword(s):  
Experimental Study ◽  
Combustion Engine ◽  
High Load ◽  
Intake Manifold ◽  
Combustion Characteristic ◽  
Test Results ◽  
Hydrogen Flow ◽  
Indicated Mean Effective Pressure ◽  
Quality Regulation ◽  
Load Conditions

In order to study the effect of hot EGR on combustion characteristic of hydrogen internal combustion engine (HICE), experimental study was taken on a 4 cylinder, 2.0L HICE. The speed was 3000rpm, and the throttle was fully open, the load was adjusted through quality regulation. When the hydrogen flow ratio was 2.79kg /h, the ignition advanced angle was optimized as maximum brake torque (MBT) timing, then the EGR valve was opened, and EGR valve was adjusted to control the flow of exhaust gas that back into the intake manifold. The test results show that: as the EGR ratio changing from 0(the EGR valve is fully closed) to 43.8%(the EGR valve is fully opened), the in-cylinder pressure is decreasing with the EGR ratio increasing; the coefficient of variation in indicated mean effective pressure (imepCOV) is not changing significantly at high load conditions, changing range is less than 1%; CA50 is postponed from 11.8oCAto15.2 oCA with EGR ratio increasing.

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