Inverted Brayton Cycle as an Option for Waste Energy Recovery in Turbocharged Diesel Engine

2019 ◽  
Author(s):  
Davide Di Battista ◽  
Roberto Cipollone ◽  
Roberto Carapellucci
Keyword(s):  
Diesel Engine ◽  
Energy Recovery ◽  
Brayton Cycle ◽  
Turbocharged Diesel Engine ◽  
Waste Energy

Crank angle-resolved exergy analysis of exhaust flows in a diesel engine from the perspective of exhaust waste energy recovery

2018 ◽  
Vol 216 ◽  
pp. 31-44 ◽  
Author(s):  
Hamidreza Mahabadipour ◽  
Kalyan Kumar Srinivasan ◽  
Sundar Rajan Krishnan ◽  
Swami Nathan Subramanian
Keyword(s):  
Diesel Engine ◽  
Energy Recovery ◽  
Exergy Analysis ◽  
Crank Angle ◽  
Waste Energy

PARAMETRIC STUDY ON AIR BRAYTON CYCLE AS AN EXHAUST ENERGY RECOVERY METHOD

2015 ◽  
Vol 77 (8) ◽  
Author(s):  
Aaron Edward Teo ◽  
Srithar Rajoo ◽  
Meng Soon Chiong ◽  
Kishokanna Paramasivam ◽  
Fengxian Tan
Keyword(s):  
Heat Exchanger ◽  
Diesel Engine ◽  
Parametric Study ◽  
Energy Recovery ◽  
Brayton Cycle ◽  
Brake Specific Fuel Consumption ◽  
Fuel Utilization ◽  
Recovery Method ◽  
Exhaust Energy ◽  
Main Components

Exhaust energy recovery is one of the ways to improve engine’s fuel utilization. Parametric study of Air Brayton Cycle (ABC) as an exhaust energy recovery was done to see its feasibility. Parameters such as the mass flow rate, heat exchanger effectiveness, compressor and turbine efficiencies and heat exchanger pressure drop were analyzed to see their effects. It was found that the ABC can extract up to 3-4 kW of energy from the exhaust of a 5.9 liter diesel engine. This translates to about 3-4% of Brake Specific Fuel Consumption (BSFC) improvement. Careful integration of the main components is crucial to the success of the ABC as an exhaust energy recovery.

scholarly journals Waste energy recovery simplify assessment

2021 ◽  
Vol 1037 (1) ◽  
pp. 012043
Author(s):  
L Knapčíková ◽  
R Hricová ◽  
I Pandová ◽  
J Pitel’
Keyword(s):  
Energy Recovery ◽  
Waste Energy

Stabilizing Excessive EGR With an Oxidation Catalyst on a Modern Diesel Engine

2002 ◽  
Author(s):  
Ming Zheng ◽  
David K. Irick ◽  
Jeffrey Hodgson
Keyword(s):  
Diesel Engine ◽  
Oxidation Catalyst ◽  
Stable Operation ◽  
Exhaust Gas ◽  
Oxides Of Nitrogen ◽  
Engine Operation ◽  
Turbocharged Diesel Engine ◽  
New Approach ◽  
Cyclic Variations ◽  
Gas Recirculation

For diesel engines (CIDI) the excessive use of exhaust gas recirculation (EGR) can reduce in-cylinder oxides of nitrogen (NOx) generation dramatically, but engine operation can also approach zones with high instabilities, usually accompanied with high cycle-to-cycle variations and deteriorated emissions of total hydrocarbon (THC), carbon monoxide (CO), and soot. A new approach has been proposed and tested to eliminate the influences of recycled combustibles on such instabilities, by applying an oxidation catalyst in the high-pressure EGR loop of a turbocharged diesel engine. The testing was directed to identifying the thresholds of stable operation at high rates of EGR without causing cycle-to-cycle variations associated with untreated recycled combustibles. The elimination of recycled combustibles using the oxidation catalyst showed significant influences on stabilizing the cyclic variations, so that the EGR applicable limits are effectively extended. The attainability of low NOx emissions with the catalytically oxidized EGR is also evaluated.

Sign in / Sign up

Export Citation Format

Share Document