scholarly journals Feasibility Study of a Scroll Expander for Recycling Low-Pressure Exhaust Gas Energy from a Vehicle Gasoline Engine System

Energies ◽  
2016 ◽  
Vol 9 (4) ◽  
pp. 231 ◽  
Author(s):  
Xing Luo ◽  
Jihong Wang ◽  
Christopher Krupke ◽  
Hongming Xu
Keyword(s):  
Feasibility Study ◽  
Gasoline Engine ◽  
Low Pressure ◽  
Exhaust Gas ◽  
Scroll Expander ◽  
Engine System

scholarly journals Experimental study on the effect of high-pressure and low-pressure exhaust gas recirculation on gasoline engine and turbocharger

2018 ◽  
Vol 10 (11) ◽  
pp. 168781401880960 ◽  
Author(s):  
Xianqing Shen ◽  
Kai Shen ◽  
Zhendong Zhang
Keyword(s):  
High Pressure ◽  
Fuel Consumption ◽  
Gasoline Engine ◽  
Exhaust Gas Recirculation ◽  
Low Pressure ◽  
Operating Conditions ◽  
Exhaust Gas ◽  
Partial Load ◽  
Recirculation System ◽  
Gas Recirculation

The effects of high-pressure and low-pressure exhaust gas recirculation on engine and turbocharger performance were investigated in a turbocharged gasoline direct injection engine. Some performances, such as engine combustion, fuel consumption, intake and exhaust, and turbocharger operating conditions, were compared at wide open throttle and partial load with the high-pressure and low-pressure exhaust gas recirculation systems. The reasons for these changes are analyzed. The results showed EGR system of gasoline engine could optimize the cylinder combustion, reduce pumping mean effective pressure and lower fuel consumption. Low-pressure exhaust gas recirculation system has higher thermal efficiency than high-pressure exhaust gas recirculation, especially on partial load condition. The main reasons are as follows: more exhaust energy is used by the turbocharger with low-pressure exhaust gas recirculation system, and the lower exhaust gas temperature of engine would optimize the combustion in cylinder.

Effect of addition of hydrogen and exhaust gas recirculation on characteristics of hydrogen gasoline engine

2017 ◽  
Vol 42 (12) ◽  
pp. 8288-8298 ◽  
Author(s):  
Yaodong Du ◽  
Xiumin Yu ◽  
Lin Liu ◽  
Runzeng Li ◽  
Xiongyinan Zuo ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Gas Recirculation

Feasibility Study of Sublimated Water Vapor Ionization, Electrostatic Transportation, and Deposition on an Engineered Cold Plate in a Low-Pressure Condition

2022 ◽  
Author(s):  
Nathaniel I. Jurado ◽  
Aaron D. Amato ◽  
Priscilla A. Mendoza ◽  
Emmanuel Negron-Ortiz ◽  
Amelia D. Greig ◽  
...  
Keyword(s):  
Water Vapor ◽  
Feasibility Study ◽  
Low Pressure ◽  
Cold Plate ◽  
Pressure Condition ◽  
Vapor Ionization

Influence of Low Ambient Temperatures on the Exhaust Gas and Deposit Composition of Gasoline Engines

2021 ◽  
pp. 1-11
Author(s):  
Dominik Appel ◽  
Fabian P. Hagen ◽  
Uwe Wagner ◽  
Thomas Koch ◽  
Henning Bockhorn ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Gasoline Engine ◽  
Cold Start ◽  
Operating Conditions ◽  
Pollutant Emissions ◽  
Ex Situ ◽  
Exhaust Gas ◽  
Gasoline Engines ◽  
Ambient Temperatures ◽  
Aftertreatment Systems

Abstract To comply with future emission regulations for internal combustion engines, system-related cold-start conditions in short-distance traffic constitute a particular challenge. Under these conditions, pollutant emissions are seriously increased due to internal engine effects and unfavorable operating conditions of the exhaust aftertreatment systems. As a secondary effect, the composition of the exhaust gases has a considerable influence on the deposition of aerosols via different deposition mechanisms and on fouling processes of exhaust gas-carrying components. Also, the performance of exhaust gas aftertreatment systems may be affected disadvantageously. In this study, the exhaust gas and deposit composition of a turbocharged three-cylinder gasoline engine is examined in-situ upstream of the catalytic converter at ambient and engine starting temperatures of -22 °C to 23 °C using a Fourier-transform infrared spectrometer and a particle spectrometer. For the cold start investigation, a modern gasoline engine with series engine periphery is used. In particular, the investigation of the behavior of deposits in the exhaust system of gasoline engines during cold start under dynamic driving conditions represents an extraordinary challenge due to an average lower soot concentration in the exhaust gas compared to diesel engines and so far, has not been examined in this form. A novel sampling method allows ex-situ analysis of formed deposits during a single driving cycle. Both, particle number concentration and the deposition rate are higher in the testing procedure of Real Driving Emissions (RDE) than in the inner-city part of the Worldwide harmonized Light vehicles Test Cycle (WLTC). In addition, reduced ambient temperatures increase the amount of deposits, which consist predominantly of soot and to a minor fraction of volatile compounds. Although the primary particle size distributions of the deposited soot particles do not change when boundary conditions change, the degree of graphitization within the particles increases with increasing exhaust gas temperature.

Effect of addition of hydrogen and TiO2 in gasoline engine in various exhaust gas recirculation ratio

2019 ◽  
Vol 44 (21) ◽  
pp. 11205-11218 ◽  
Author(s):  
S. Manigandan ◽  
P. Gunasekar ◽  
S. Poorchilamban ◽  
S. Nithya ◽  
J. Devipriya ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Gas Recirculation

Study of Gasoline Engine Waste Heat Recovery by Organic Rankine Cycle

2011 ◽  
Vol 383-390 ◽  
pp. 6071-6078
Author(s):  
E. H. Wang ◽  
H. G. Zhang ◽  
B. Y. Fan ◽  
H. Liang ◽  
M. G. Ouyang
Keyword(s):  
Automobile Industry ◽  
Gasoline Engine ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Outlet Temperature ◽  
Exhaust Gas ◽  
Environment Protection ◽  
The Mathematical Model

Energy saving and environment protection are two important issues that today’s automobile industry must emphasize. Lots of heat energy waste with the exhaust gas when the engine is running. If this part of waste heat can be recovered, the energy efficiency will be improved. Thus plenty of energy can be saved and the global warming also can be reduced. In this paper, the organic Rankine cycle whose working fluid was R245fa was studied. It was adopted to recover the gasoline engine waste heat. The mathematical model of the organic Rankine cycle was built up in Matlab to search the optimized working condition. The pinch analysis method was used to analyze the outlet temperature of the exhaust gas. The results indicate that organic Rankine cycle is a good way to recover the gasoline engine waste heat, especially in the high load conditions. The temperature of the exhaust gas can be apparently decreased.

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