scholarly journals Small Cogeneration Unit with Heat and Electricity Storage

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2102
Author(s):  
Josef Stetina ◽  
Michael Bohm ◽  
Michal Brezina
Keyword(s):  
Internal Combustion Engine ◽  
Cooling System ◽  
Combustion Engine ◽  
Catalytic Converter ◽  
Storage System ◽  
Internal Combustion ◽  
Energy Storage System ◽  
Balance Model ◽  
Exhaust Pipe ◽  
Water Storage Tank

A micro cogeneration unit based on a three-cylinder internal combustion engine, Skoda MPI 1.0 L compressed natural gas (CNG), with an output of 25 kW at 3000 RPM is proposed in this paper. It is a relatively simple engine, which is already adopted by the manufacturer to operate on CNG. The engine life and design correspond to the original purpose of use in the vehicle. A detailed dynamic model was created in the GT-SUITE environment and implemented into an energy balance model that includes its internal combustion engine, heat exchangers, generator, battery storage, and water storage tank. The 1D internal combustion engine model provides us with information on engine start-up time, actual effective power, friction power, and the amount of heat going to the cooling system and exhaust pipe. The catalytic converter was removed from the exhaust pipe, and the engine was always operating at full load; thus, engine power control is not considered. An energy storage system for an island operation of the entire power unit for a large, detached house was designed to withstand accumulated energy for a few days in the case of a breakout. To reach a low initial system cost, the possible implementation of worn-out battery packs toward emission reduction in terms of the second life of the battery is proposed. The energy and emission balance are carried out, and the service life of the engine is also discussed.

MODELING, SIMULATION AND MODEL OPTIMIZATION OF INTERNAL COMBUSTION ENGINE FOR PHERB POWERTRAIN

2017 ◽  
Vol 79 (5) ◽  
Author(s):  
J. S. Norbakyah ◽  
H. W. C. Daniel ◽  
W. H. Atiq ◽  
M. Z. Daud ◽  
A. R. Salisa
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Demand Curve ◽  
Storage System ◽  
Internal Combustion ◽  
Energy Storage System ◽  
Pi Controller ◽  
Detailed Model ◽  
Exhaust Gas Emission ◽  
Environmental Pollution Problem

Internal combustion engine (ICE) is the most important part in vehicle. Generally, the combustion of ICE is facilitated by petrol and exhaust gas emission from vehicles is a primary contributor to the environmental pollution problem. In this research, Plug-in hybrid electric recreational boat (PHERB) is introduced and PHERB has a combination of energy storage system, ICE and electric machine. The objective of this work is to derive a detailed model of ICE in MATLAB/SIMULINK environment, develop proportional-integral (PI) controller for ICE and optimize ICE using a Genetic Algorithm (GA) based on PI controller. The efficiency of ICE for PHERB obtained was 40 % at rotational speed 4000 rpm of the engine. Via using the GA, the optimal performance of ICE is found by power demand curve, as a reference for the model with mutation probability used is 0.085. In terms of the performance results, the optimal tuning parameters of ICE for PHERB had a significantly improved performance towards green and clean technology.

scholarly journals Initiation and propagation of shock waves in the exhaust pipe of an internal combustion engine.

1988 ◽  
Vol 54 (498) ◽  
pp. 527-531 ◽  
Author(s):  
Noriaki SEKINE ◽  
Shuji MATSUMURA ◽  
Kazuyoshi TAKAYAMA ◽  
Osamu ONODERA ◽  
Katsuhiro ITO
Keyword(s):  
Shock Waves ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Exhaust Pipe ◽  
Initiation And Propagation

Unified multidisciplinary modeling and simulation analysis of internal power system

2021 ◽  
pp. 1-21
Author(s):  
Guojin Chen ◽  
Chang Chen ◽  
Yiming Yuan ◽  
Yishuai Yue
Keyword(s):  
Internal Combustion Engine ◽  
Modeling And Simulation ◽  
Physical System ◽  
Cooling System ◽  
Combustion Engine ◽  
Control Unit ◽  
Internal Combustion ◽  
Power Equipment ◽  
Supply Rate ◽  
Multidisciplinary Modeling

The internal combustion power equipment is a typical cyber-physical system (CPS). The traditional design method is to separate the information system from the physical system, and then to simulate and optimize separately every system. That can not achieve the best performance. Aiming at the internal combustion power equipment with multi-disciplinary deep integration, this paper establishes the multi-disciplinary model of the whole and key components based on Dymola software. There are mainly mechanical system, combustion system, cooling system, control system and other simulation models, including deceleration and fuel cut-off control unit modeling, start-stop control unit modeling and speed limit control unit modeling. The performance of each model is simulated and analyzed. The mathematical models of engine characteristic curve and fuel supply rate curve are established through experimental study. Finally, taking the simulation model of automobile power system as an example, the simulation calculation and experimental verification are carried out, and the relationship among fuel supply rate, torque, speed and valve of internal combustion engine is obtained, as well as the cooling capacity of the cooling system is studied. The experimental results show that the maximum error between the simulation speed curve and the actual speed curve is within ± 2 km/h. The research results of this paper can provide theoretical basis for multidisciplinary modeling and simulation of internal combustion power equipment, and also provide technical support for performance analysis of internal combustion engine.

scholarly journals The Effect of Using a Modified A/C System on the Cooling System Temperature of an Internal Combustion Engine

2017 ◽  
Vol 07 (05) ◽  
pp. 92-99
Author(s):  
Mukhtar M.A. Morad ◽  
Abdulwahab A. Alnaqi ◽  
Ahmad E. Murad ◽  
Esam A.M. Husain ◽  
Hasan Mulla Ali ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Cooling System ◽  
Combustion Engine ◽  
Internal Combustion ◽  
System Temperature

A Method for Preoptimising the Internal Combustion Engine Air Cooling System

1998 ◽  
Author(s):  
E. Navarro Arévalo ◽  
D. L. Fernández Melcón ◽  
R. Marcos Álvarez ◽  
P. Pérez Illana
Keyword(s):  
Internal Combustion Engine ◽  
Cooling System ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Air Cooling ◽  
Air Cooling System
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